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Artykuły w czasopismach na temat „TM POLARIZATION”

Autor: Grafiati

Data publikacji: 11 września 2023

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1

Gao, Chenhao, Bo Wang, Hongtao Li, et al. "Modes simulation and numerical optimization of encapsulated connecting-layer grating for high efficiency." Modern Physics Letters B 32, no. 31 (2018): 1850386. http://dx.doi.org/10.1142/s0217984918503864.

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We propose and investigate a polarization-independent high-efficiency encapsulated subwavelength grating with a connecting layer in this paper. Numerical simulated method of rigorous coupled-wave analysis is adopted for optimization. Based on the simulated precise results, a simplified modal method is used to give perspicuous physical propagating fundamentals and explain wideband performance in the grating, where the coupled efficiencies by means of the simplified modal method are to be in conformity with the calculated values of the rigorous coupled-wave analysis for TE and TM polarizations.

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2

Cammarata, Simone, Andrea Fontana, Ali Emre Kaplan, et al. "Polarization Control in Integrated Graphene-Silicon Quantum Photonics Waveguides." Materials 15, no. 24 (2022): 8739. http://dx.doi.org/10.3390/ma15248739.

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We numerically investigated the use of graphene nanoribbons placed on top of silicon-on-insulator (SOI) strip waveguides for light polarization control in silicon photonic-integrated waveguides. We found that two factors mainly affected the polarization control: the graphene chemical potential and the geometrical parameters of the waveguide, such as the waveguide and nanoribbon widths and distance. We show that the graphene chemical potential influences both TE and TM polarizations almost in the same way, while the waveguide width tapering enables both TE-pass and TM-pass polarizing functional

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3

Patsamanis, Georgios, Dimitra Ketzaki, Dimitrios Chatzitheocharis, and Konstantinos Vyrsokinos. "Design and Optimization of a Compact Ultra-Broadband Polarization Beam Splitter for the SCL-Band Based on a Thick Silicon Nitride Platform." Photonics 9, no. 8 (2022): 552. http://dx.doi.org/10.3390/photonics9080552.

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The polarization beam splitter is an essential photonic integrated circuit in applications where a high-performing on-chip polarization diversity scheme is required. The lower refractive index contrast of the silicon nitride material platform compared to silicon-on-insulator constitutes the separation of polarized light states a challenging task since for this purpose a large difference between the effective refractive indices of the fundamental TE and TM modes is highly desirable. In this paper, we present the design and optimization analysis of an ultra-broadband polarization beam splitter b

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4

Lee, Chee-Wei. "A Review of Polarization Dependence Applications for Asymmetric Waveguides Vertical Couplers in Compound Semiconductor Indium Phosphide." International Journal of Optics 2011 (2011): 1–11. http://dx.doi.org/10.1155/2011/164023.

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This paper reviews and presents a coherent approach to the design of compact vertical coupler (VC) in InP-based compound semiconductor with variable polarization dependence. As a polarization-independent (PI) coupler, the VC is shown to transfer light with more than 90% efficiency for both transverse-electric (TE) and transverse-magnetic (TM) polarizations. As a polarization-mode splitter (PMS), the VC is shown to preferentially couple TE or TM modes with a contrast ratio of up to 20 dB. We further demonstrate the single-mesa VC, which simplifies the fabrication process and potentially could i

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5

Dai, Zijie, Eryi Pan, Xuefeng Chen, Xiaoxian Song, Haiting Zhang, and Ying Liang. "Compact Design for Bi-Polarization Quantum Routers on SOI Platform." Photonics 10, no. 8 (2023): 897. http://dx.doi.org/10.3390/photonics10080897.

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An ultra-compact optical quantum router (QR) consisting of a Mach–Zehnder interferometer (MZI) and waveguide tapers is proposed and numerically simulated, using silicon-on-insulator (SOI). The interferometer is designed to work at the center wavelength of 1550 nm with visibilities of 99.65% and 98.80% for TE and TM polarizations, respectively. Using the principle of phase compensation and self-image, the length of the waveguide tapers is shortened by an order of magnitude with the transmission above 95% for both TE and TM polarizations. Furthermore, polarization beam splitters (PBS) with an ul

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6

Lee, Chee-Wei. "Design of Polarization-Independent Coarse Wavelength Splitters Based on Ridge-Waveguide Directional Couplers." International Journal of Optics 2011 (2011): 1–9. http://dx.doi.org/10.1155/2011/263182.

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We present the first unique design of a polarization-independent dual-wavelength splitter for wavelengths around 1.3 μm and 1.55 μm that is potentially of great interest to passive optical network (PON) applications. The filter design is simple compared with the other architectures and is based on ridge-type lateral directional couplers that can be readily integrated with other planar waveguide devices. Two design examples, based on InP/InGaAsP and Si/SiGe waveguides, are given. This polarization-independent wavelength splitting is achieved by exploiting the polarization dependence of the wave

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7

Zhang, Jingjing, Zhaojian Zhang, Chao Ma, et al. "Ultra-Compact and Ultra-Broadband Polarization-Insensitive Mach–Zehnder Interferometer in Silicon-on-Insulator Platform for Quantum Internet Application." Photonics 8, no. 10 (2021): 455. http://dx.doi.org/10.3390/photonics8100455.

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Polarization dependence in integrated silicon photonics has a detrimental effect on the manipulation of quantum state with different polarizations in the quantum technology. Those limits have profound implications for further technological developments, especially in quantum photonic internet. Here, we propose a polarization-independent Mach–Zehnder interferometer (MZI) structure based on a 340 nm-thick silicon-on-insulator (SOI) platform. The MZI facilitates low loss, broad operating bandwidth, and large tolerance of the fabrication imperfection. We achieve an excess loss of <10% and an ex

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8

Shu, Wenhao, Bo Wang, Hao Pei, et al. "Investigation on multilayer microstructure grating for three-port splitting." Modern Physics Letters B 30, no. 16 (2016): 1650195. http://dx.doi.org/10.1142/s0217984916501955.

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A new structure of microstructure reflection three-port beam splitter grating is described in this paper. The grating includes two dielectric layers and a metal slab on the substrate, where incident waves are reflected into the zeroth-order and the ± first-order with polarization-independent property. With the optimized grating profile, reflection efficiencies’ ratios between the first-order and the zeroth-order can reach 0.998 and 1.001 for TE and TM polarizations, respectively. Especially, the reflection grating can diffract efficiencies more than 30% into the ± first-order and the zeroth-or

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9

Calò, Giovanna, Gaetano Bellanca, Franco Fuschini, Marina Barbiroli, Velio Tralli, and Vincenzo Petruzzelli. "Polarization Effect on the Performance of On-Chip Wireless Optical Point-to-Point Links." Applied Sciences 13, no. 5 (2023): 3062. http://dx.doi.org/10.3390/app13053062.

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Optical on-chip wireless interconnection is an emerging technology that aims to overcome the communication bottleneck in computing architectures and in which multiple processing units are exploited for data-intensive applications. In this work, we propose an integrated dielectric Vivaldi antenna, which exhibits the same gain performances for both TE and TM input polarizations. Point-to-point on-chip communication links between two Vivaldi antennas are analyzed. Moreover, the effect of wave polarization on the link performances is numerically studied in on-chip multilayer structures in connecti

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10

Tang, Geyu, Huamao Huang, Yuqi Liu, and Hong Wang. "Compact Photonic Crystal Polarization Beam Splitter Based on the Self-Collimation Effect." Photonics 8, no. 6 (2021): 198. http://dx.doi.org/10.3390/photonics8060198.

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We propose a new compact polarization beam splitter based on the self-collimation effect of two-dimensional photonic crystals and photonic bandgap characteristics. The device is composed of a rectangular air holes-based polarization beam splitting structure and circular air holes-based self-collimating structure. By inserting the polarization beam splitting structure into the self-collimating structure, the TE and TM polarized lights are orthogonally separated at their junction. When the number of rows in the hypotenuse of the inserted rectangular holes is 5, the transmittance of TE polarized

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11

Lin, Zefan, Bo Wang, and Chen Fu. "Stack-based grating for wideband polarization splitter in terahertz." Physica Scripta 96, no. 12 (2021): 125540. http://dx.doi.org/10.1088/1402-4896/ac4549.

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Abstract A novel wideband terahertz polarization beam splitter with special diffraction orders working at terahertz band is described in this paper. The polarizer can achieve high diffraction efficiency and uniformity in the 2.50–2.56 THz band. Based on rigorous coupled-wave analysis (RCWA) and simulated annealing algorithm, we proposed an efficient algorithm to optimize the polarizer. After calculations, 98.45% single-port high-efficiency reflection for transverse electric (TE) polarization and 42.33%/42.57% highly uniform dual-port beam splitting for transverse magnetic (TM) polarization wer

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12

Wang, Xiaofeng, Bo Wang, and Liqun Liu. "High uniformity splitter with great inhibition of ±1st orders." Laser Physics 33, no. 10 (2023): 106201. http://dx.doi.org/10.1088/1555-6611/acf4e6.

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Abstract A transmissive double-groove grating under vertical incidence is proposed in this paper. The grating has a total of five diffraction orders, and the effect of a three-channel beam splitter is achieved by inhibiting the diffraction efficiency of ±1st orders. This is a polarization-independent micro-nano structure that achieves triple beam splitting under both TE and TM polarization. The diffraction efficiency of the 0th order and ±2nd orders for TE polarization orders can reach 32.55% and 32.72%, respectively. And the diffraction efficiency of 0th order and ±2nd orders for TM polarizat

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13

Wei, Huihui, Jiatian Guo, Xiaobo Yuan, and Junfeng Ren. "Spin Polarization Properties of Two Dimensional GaP3 Induced by 3d Transition-Metal Doping." Micromachines 12, no. 7 (2021): 743. http://dx.doi.org/10.3390/mi12070743.

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The electronic structure and spin polarization properties of monolayer GaP3 induced by transition metal (TM) doping were investigated through a first-principles calculation based on density functional theory. The calculation results show that all the doped systems perform spin polarization properties, and the Fe–doped system shows the greatest spin polarization property with the biggest magnetic moment. Based on the analysis from the projected density of states, it was found that the new spin electronic states originated from the p–d orbital couplings between TM atoms and GaP3 lead to spin pol

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14

Janaszek, Bartosz, and Paweł Szczepański. "Spatial Dispersion in Hypercrystal Distributed Feedback Lasing." Materials 15, no. 10 (2022): 3482. http://dx.doi.org/10.3390/ma15103482.

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This work is a first approach to investigate the role of spatial dispersion in photonic hypercrystals (PHCs). The scope of the presented analysis is focused on exploiting nonlocality, which can be controlled by appropriate design of the structure, to obtain new light generation effects in a distributed feedback (DFB) laser based on PHC, which are not observable under weak spatial dispersion. Here, we use effective medium approximation and our original model of threshold laser generation based on anisotropic transfer matrix method. To unequivocally identify nonlocal generation phenomena, the sc

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15

Teranishi, Takashi, Takuya Hoshina, Hiroaki Takeda, and Takaaki Tsurumi. "Wide Range Dielectric Spectroscopy of Barium Strontium Titanate Ceramics." Key Engineering Materials 421-422 (December 2009): 273–76. http://dx.doi.org/10.4028/www.scientific.net/kem.421-422.273.

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Wide band dielectric spectroscopy was applied from kHz to THz region for the analysis of both the ionic and the dipole polarization in Ba0.6Sr0.4TiO3 ceramics. The dielectric permittivity above the dielectric maximum temperature (Tm) is mostly dominated by the ionic polarization, while that below Tm is governed by the dipole polarization. Dielectric permittivity given by the dipole polarization increased and the relaxation frequency decreased with decreasing temperature. These phenomena are related to a increase of the size of polar nanoregions (PNRs).

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16

Wu, Feng, Zijin Wang, Jiaqi He, Zhenzhe Li, Lijuan Meng, and Xiuyun Zhang. "Effect of 3d Transition Metal Atom Intercalation Concentration on the Electronic and Magnetic Properties of Graphene/MoS2 Heterostructure: A First-Principles Study." Molecules 28, no. 2 (2023): 509. http://dx.doi.org/10.3390/molecules28020509.

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The electronic and magnetic properties of graphene/MoS2 heterostructures intercalated with 3d transition metal (TM) atoms at different concentrations have been systematically investigated by first principles calculations. The results showed that all the studied systems are thermodynamically stable with large binding energies of about 3.72 eV–6.86 eV. Interestingly, all the TM-intercalated graphene/MoS2 heterostructures are ferromagnetic and their total magnetic moments increase with TM concentration. Furthermore, TM concentration-dependent spin polarization is obtained for the graphene layer a

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17

Kuzubov, Alexander A., Evgenia A. Kovaleva, Paul Avramov, et al. "Contact-induced spin polarization in BNNT(CNT)/TM (TM=Co, Ni) nanocomposites." Journal of Applied Physics 116, no. 8 (2014): 084309. http://dx.doi.org/10.1063/1.4894157.

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18

Li, Lei, Bin Zhang, Ke Yin, and Jing Hou. "Multiwavelength Tm-doped fiber laser based on nonlinear polarization rotation." Chinese Optics Letters 13, Suppl. (2015): S20602. http://dx.doi.org/10.3788/col201513.s20602.

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19

Zlobinskiy, Arkadiy, and Vladimir Mogilatov. "MODERN CONDITION OF TM-POLARIZATION ELECTRICAL PROSPECTING." Interexpo GEO-Siberia 2, no. 2 (2019): 154–57. http://dx.doi.org/10.33764/2618-981x-2019-2-2-154-157.

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20

Dong, Chengkun, Sijie Dai, Jun Xia, et al. "Ultracompact Polarization Splitter–Rotator Based on Shallowly Etched Subwavelength Gratings and Anisotropic Metasurfaces." Nanomaterials 12, no. 19 (2022): 3506. http://dx.doi.org/10.3390/nano12193506.

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Polarization splitter–rotators (PSRs) are an essential component in on-chip polarization-sensitive and polarization–division multiplexing systems. In this work, we propose an ultracompact and high-performance silicon-based polarization splitter–rotator utilizing anisotropic metasurfaces, which is the first to combine the two, to our knowledge. The tilted periodic metasurface structure has different modulation effects on different polarized light fields, such as the transverse–electric (TE) mode and the transverse–magnetic (TM) mode, which are beneficial for designing polarization management de

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21

Bordag, M., and I. G. Pirozhenko. "Surface plasmon on graphene at finite T." International Journal of Modern Physics B 30, no. 19 (2016): 1650120. http://dx.doi.org/10.1142/s0217979216501204.

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Using the recently developed polarization tensor in [Formula: see text] dimensions for the electronic excitations of graphene, we investigate the influence of temperature on the surface plasmons on graphene. We consider nonzero mass gap, but zero chemical potential. Plasmons may exist for both polarizations, transverse electric (TE) and transverse magnetic (TM), of the electromagnetic field. For TE, the momentum region, where the dispersion function is real, appears bounded from below, whereas for TM it is bounded from above. We discuss the similarities of these features with those found previ

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22

Lin, Mi, Lixin Fu, Shakeel Ahmed, et al. "Polarization-Independent Circulator Based on Composite Rod of Ferrite and Plasma in Photonic Crystal Structure." Nanomaterials 11, no. 2 (2021): 381. http://dx.doi.org/10.3390/nano11020381.

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We propose a type of polarization-independent circulator based on a composite rod of ferrite and plasma materials in a two-dimensional photonic crystal (PhC) slab. Only one composite rod was set at the center of the structure to provide circulation for both TE- and TM-polarized waves. Additionally, to improve the performance of the circulator, three additional rods were inserted to improve the coupling condition between the center magneto-optical microcavity and the corresponding waveguides. Finite element method was used to calculate the characteristics of the structure and the Nelder–Mead op

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23

Chuang, Kuei-Ya, Te-En Tzeng, and Tsong-Sheng Lay. "Coupled InGaAs Quantum Dots for Electro-Optic Modulation." Crystals 11, no. 10 (2021): 1159. http://dx.doi.org/10.3390/cryst11101159.

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We investigated the growth of vertically coupled In0.75Ga0.25As quantum dots (QDs) by varying the GaAs spacer thickness (d). Vertically-aligned triple-layer QDs of uniform size and highest accumulated strain are formed with d = 5 nm. The electroluminescence (EL) characteristics for In0.75Ga0.25As QDs show an emission spectrum at optical wavelength (λ) of 1100−1300 nm. The EL spectra exhibit the highest optical gain at λ ~ 1200 nm, and the narrowest FWHM = 151 nm of the sample with d = 5 nm at injection current = 20 mA. Fabry–Perot measurements at λ = 1515 nm of TE and TM polarizations were car

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24

Jeong, Seok-Hwan, Heuk Park, and Joon Ki Lee. "Silicon-Nanowire-Type Polarization-Diversified CWDM Demultiplexer for Low Polarization Crosstalk." Nanomaterials 13, no. 16 (2023): 2382. http://dx.doi.org/10.3390/nano13162382.

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Coarse wavelength division multiplexing (CWDM)-targeted novel silicon (Si)-nanowire-type polarization-diversified optical demultiplexers were numerically analyzed and experimentally verified. The optical demultiplexer comprised a hybrid mode conversion-type polarization splitter rotator (PSR) and a delayed Mach–Zehnder interferometric demultiplexer. Si-nanowire-based devices were fabricated using a commercially available Si photonics foundry process, exhibiting nearly identical spectral responses regardless of the polarization states of the input signals under the PSR. The experiment demonstra

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25

Gong, Bowen, and Huiying Wen. "Enhanced polarization-independent two-layer five-port grating with covering layer." Modern Physics Letters B 35, no. 25 (2021): 2150348. http://dx.doi.org/10.1142/s0217984921503486.

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In this paper, an enhanced polarization-independent two-layer five-port grating with covering layer is proposed. The rigorous coupled-wave analysis (RCWA) is used to predict grating parameters. In addition, the total efficiency of the polarization-independent five-port grating with covering layer can exceed 80% with the good uniformity of 1.97% for TE and TM polarization. The inherent coupling mechanism and the electric field energy distribution of the gratings are explained well under TE and TM polarization by the simplified mode method (SMM) and the finite element method (FEM). According to

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26

Bhowmik, Tanmay, and Debabrata Sikdar. "Parallel directional coupler based dual-polarization electro-absorption modulator using epsilon near-zero material." Journal of Physics D: Applied Physics 55, no. 13 (2021): 135107. http://dx.doi.org/10.1088/1361-6463/ac4455.

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Abstract Electro-optical modulation, where a radio frequency signal can be encoded in an optical field, is crucial to decide the overall performance of an integrated photonics system. Due to the growing internet penetration rate worldwide, polarization-division-multiplexing (PDM) technique has emerged to increase the link capacity, where polarization-independent modulators are desirable to reduce system complexity. In this study, we propose a novel parallel directional coupler based dual-polarization electro-absorption modulator based on epsilon-near-zero (ENZ) material. The proposed design is

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27

Nia, B. Arghavani, R. Moradian, and M. Shahrokhi. "Structural, electronic and magnetic properties of Fe, Co, Ni monatomic nanochains encapsulated in armchair LiF nanotubes." Materials Science-Poland 35, no. 2 (2017): 283–90. http://dx.doi.org/10.1515/msp-2017-0045.

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Abstract Structural, electronic and magnetic properties of transition metal TM (TM = Fe, Co and Ni) atomic chains wrapped in single walled LiF armchair nanotubes have been investigated by the first-principles calculations in the framework of the density functional theory. The generalized gradient approximation (GGA) with Hubbard repulsion potential and without Hubbard repulsion was employed to describe the exchange-correlation potential. It is found that all these TM chains @LiFNTs systems have negative formation energy so they are stable and exothermic. Total density of states and partial den

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28

Jafari, A., and A. Rahmat. "Band structure of one-dimensional photonic crystal with graphene layers using the Fresnel coefficients method." International Journal of Modern Physics B 32, no. 11 (2018): 1850132. http://dx.doi.org/10.1142/s0217979218501321.

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In this paper, we have calculated the band structure of an instance of one-dimensional photonic crystal (1DPC) composed of double-layered dielectrics via the Fresnel coefficients method. Then, we supposed the addition of a thin layer of graphene to each dielectric layer and the given photonic crystal (PC) composed of dielectric–graphene composites. The effects of graphene layers on the PC band structure were evaluated. We found out that according to the effective medium theory unlike the TE polarization, the electric permittivity of the dielectric layers changed at TM polarization. As such, th

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29

Fang, Yuxi, Changjing Bao, Zhonghan Wang, et al. "Polarization Beam Splitter Based on Si3N4/SiO2 Horizontal Slot Waveguides for On-Chip High-Power Applications." Sensors 20, no. 10 (2020): 2862. http://dx.doi.org/10.3390/s20102862.

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In this paper, we propose an Si3N4/SiO2 horizontal-slot-waveguide-based polarization beam splitter (PBS) with low nonlinearity for on-chip high-power systems. The coupling length ratio between the quasi-TE and quasi-TM modes (LTE/LTM) was optimized to 2 for an efficient polarization splitting. For the single-slot design, the coupling length of the PBS was 281.5 μm, while the extinction ratios (ER) of the quasi-TM and quasi-TE modes were 23.9 dB and 20.8 dB, respectively. Compared to PBS based on the Si3N4 strip waveguide, the coupling length became 22.6% shorter. The proposed PBSs also had a r

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30

Ataei, Elahe, Mehdi Sharifian, and Najmeh Zare Bidoki. "Magnetized plasma photonic crystals band gap." Journal of Plasma Physics 80, no. 4 (2014): 581–92. http://dx.doi.org/10.1017/s0022377814000105.

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In this paper, the effect of the magnetic field on one-dimensional plasma photonic crystal band gaps is studied. The one-dimensional fourfold plasma photonic crystal is applied that contains four periodic layers of different materials, namely plasma1–MgF2–plasma2–glass in one unit cell. Based on the principle of Kronig–Penney's model, dispersion relation for such a structure is obtained. The equations for effective dielectric functions of these two modes are theoretically deduced, and dispersion relations for transverse electric (TE) and transverse magnetic (TM) waves are calculated. At first,

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31

Brand, Omer, Benjamin Wolftson, and Dror Malka. "A Compact Polarization MMI Combiner Using Silicon Slot-Waveguide Structures." Micromachines 14, no. 6 (2023): 1203. http://dx.doi.org/10.3390/mi14061203.

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The study of designing a compact transverse electric (TE)/transverse magnetic (TM) polarization multimode interference (MMI) combiner based on silicon slot-waveguide technology is proposed for solving the high demands for high-speed ability alongside more energy power and minimizing the environmental impact of power consumption, achieving a balance between high-speed performance and energy efficiency has become an important consideration in an optical communication system. The MMI coupler has a significant difference in light coupling (beat-length) for TM and TE at 1550 nm wavelength. By contr

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32

Liao, Yan-Lin, and Yan Zhao. "Near-infrared TM-polarization ultra-narrowband absorber with dielectric metamaterials." Modern Physics Letters B 33, no. 18 (2019): 1950201. http://dx.doi.org/10.1142/s0217984919502014.

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Ultra-narrowband light absorption is desired for many applications. A near-infrared TM-polarization (magnetic field is parallel to grating grooves) ultra-narrowband absorber with dielectric metamaterials has been reported theoretically in this paper. The simulation results show that we can achieve an ultra-narrowband absorption at the incident wavelength of [Formula: see text] with the absorption bandwidth less than 0.9 nm and the absorption rate more than 0.99 for TM polarization. At the same time, we find that the high absorption rate can only remain up to [Formula: see text], which means ou

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33

Saad, Yasmeen, and Amin Habbeb AL-Khursan. "Deep Ultraviolet BGaN Quantum Dot structures." University of Thi-Qar Journal of Science 8, no. 2 (2022): 104–15. http://dx.doi.org/10.32792/utq/utjsci.v8i2.871.

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This research studies boron-containing quantum dot (QD) structures that emit the ultraviolet. Ternary and quaternary lattice-matched structure:, , , , ,, , and and their TE and TM gain spectra, spontaneous emission, spontaneous polarization, and piezoelectric polarization have been examined in these structures. They have high TE and TM spectra under reducing boron content in the QD or barrier layer. The total polarization decreases for the Al-containing systems, which is preferred. Binary systems emit at 199nm, while the quaternary can have a peak wavelength near 235nm. Elongating of the wavel

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34

Lei, Danqi, Dae-Hyun Kim, Nasser Babazadeh, David T. D. Childs, and Richard A. Hogg. "Polarization-pinning in substrate emission multi-mode vertical-cavity surface-emitting lasers using deep trenches." Applied Physics Letters 120, no. 21 (2022): 211102. http://dx.doi.org/10.1063/5.0087166.

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We investigated the stable polarization-pinning properties of substrate emission InGaAs-based 980 nm multi-mode vertical-cavity surface-emitting lasers (VCSELs). For the multi-mode 40 um diameter aperture VCSELs, we introduced 30 μm wide, 9 μm depth deep trenches that are 15 μm away from the cavity aperture. The VCSELs with trench structure produced higher transverse-electric (TE) polarized light output power, as compared with transverse-magnetic (TM) polarized light output power, namely, the effective TM polarization suppression was realized. These trench-etched VCSELs exhibited a 7.5 dB orth

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Zheng, Xinzhi, Yujie Ma, Chenxi Zhao, et al. "Polarization Splitting at Visible Wavelengths with the Rutile TiO2 Ridge Waveguide." Nanomaterials 13, no. 12 (2023): 1891. http://dx.doi.org/10.3390/nano13121891.

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On-chip polarization control is in high demand for novel integrated photonic applications such as polarization division multiplexing and quantum communications. However, due to the sensitive scaling of the device dimension with wavelength and the visible-light absorption properties, traditional passive silicon photonic devices with asymmetric waveguide structures cannot achieve polarization control at visible wavelengths. In this paper, a new polarization-splitting mechanism based on energy distributions of the fundamental polarized modes in the r-TiO2 ridge waveguide is investigated. The bend

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36

Chen, Ming, and Chen Chen. "TE/TM polarization splitters in LiNbO3 photonic wires." Optik 126, no. 2 (2015): 184–86. http://dx.doi.org/10.1016/j.ijleo.2014.08.149.

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Massaro, A., A. F. Cavallari, and T. Rozzi. "Polarization Switching by TM Passing of Laminated Cover." Journal of Lightwave Technology 22, no. 2 (2004): 558–66. http://dx.doi.org/10.1109/jlt.2004.824395.

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Ho, Pui Lin, and Ya Yan Lu. "Improving the beam propagation method for TM polarization." Optical and Quantum Electronics 35, no. 4/5 (2003): 507–19. http://dx.doi.org/10.1023/a:1022925907084.

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Wang, Guan Jun, Zhi Bin Wang, You Hua Chen, et al. "Polarization-Insensitive Holey Fiber with Ultra-Small Mode Areas Using a Cross-Slot-Structure Core." Key Engineering Materials 609-610 (April 2014): 775–78. http://dx.doi.org/10.4028/www.scientific.net/kem.609-610.775.

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A high nonlinear, dispersion flattened hybrid nanofiber with a silicon/silica cross-slot-structure nanocore is firstly proposed and analyzed, which is insensitive to polarization for implementing quasi-TE and quasi-TM fundamental modes transmission due to cross slot effect. Simulation results show that fundamental mode of ultra-small mode effective areas and high nonlinearity at TE and TM polarizations, which are confined in the narrow cross slot by four silicon ribs, can be achieved via this cross sot structure core. Moreover, the cladding of four large-air-holes promotes tailoring the group

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40

Kozlov, D., and V. Kotlyar. "Focusing of laser light using a dielectric cylinder carrying higher-order whispering gallery modes." Computer Optics 39, no. 3 (2015): 324–31. http://dx.doi.org/10.18287/0134-2452-2015-39-3-324-331.

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We demonstrated that plane wave diffraction on a dielectric cylinder with resonant radius produces a broader focal spot in case of TM-polarization, and resonant radiuses of whispering gallery modes (WGM) for TM-polarized illumination are significantly greater than corresponding radiuses for TE-polarization. We also showed that high order WGM are exited in cylinders with radiuses close to extreme value conditions of Bessel functions, and that increasing WGM order not necessary leads to stronger light confinement in the focal spot.

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41

Abdullahi, M. B., and M. H. Ali. "DESIGN AND PERFORMANCE SIMULATION OF STRUCTURED MICROWAVE ABSORBER BASED ON CONDUCTIVE ABS 3D PRINTING FILAMENT." FUDMA JOURNAL OF SCIENCES 4, no. 4 (2021): 425–31. http://dx.doi.org/10.33003/fjs-2020-0404-499.

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Electromagnetic absorbing materials with broadband, lightweight, wide-angle, and polarization-insensitive characteristics attracts extensive research interest recently, due to rapid advancement in radar detection techniques and communication devices. Three-dimensional printing is being employed to realize cost-effective structured electromagnetic absorbers that has lately become a common practice of improving radar stealth performance and shielding effectiveness. Structured absorbers permit realization of desired absorption characteristics by careful design of their geometrical structures. In

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42

Jiao, Xiao-Fei, Zi-Heng Zhang, Yun Xu, and Guo-Feng Song. "Resonant cavity enhanced waveguide transmission for high-efficiency Terahertz polarization beam splitter." Modern Physics Letters B 35, no. 05 (2021): 2150089. http://dx.doi.org/10.1142/s0217984921500895.

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In this study, a design for the high-efficiency transmissive terahertz polarization beam splitter is proposed. Based on the metal–insulator–metal waveguide array structure, it is found that the phase change between the transverse-electric (TE) and transverse-magnetic (TM) modes of terahertz wave transmission depends greatly on the medium width. According to this phenomenon, our designed devices can achieve polarization splitting of TE and TM modes in the frequency range 0.8–2.4 THz, and the transmittance can be maintained above 85%. In addition, through judicious design, polarization splitting

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43

Wang, Zhibin, Mengxiong Zhao, Shaojie Yin, Mengfei Jia, and Xuwei Hou. "Silicon-based subwavelength grating polarization beam splitter with asymmetric directional coupler." Laser Physics 33, no. 8 (2023): 086204. http://dx.doi.org/10.1088/1555-6611/acdbc4.

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Abstract In this paper, a novel polarization beam splitter (PBS) is proposed. The silicon-based subwavelength grating (SWG) is successfully applied to the asymmetric directional coupled PBS, and the research shows that its performance has improved in many aspects. By carefully optimizing structural parameters, the transverse electric (TE) polarization is in a reflected state in the SWG, which effectively weakens the coupling strength, while the transverse magnetic (TM) polarization is almost unaffected. Simulation results show that the bandwidths of TE polarization and TM polarization are 200

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44

Yu, Fan, Guo-Qiang He, Xue-Xia Yang, Jinxin Du, and Steven Gao. "Polarization-Insensitive Metasurface for Harvesting Electromagnetic Energy with High Efficiency and Frequency Stability over Wide Range of Incidence Angles." Applied Sciences 10, no. 22 (2020): 8047. http://dx.doi.org/10.3390/app10228047.

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In this paper, a polarization-insensitive metasurface, harvesting electromagnetic (EM) energy with high efficiency and frequency stability over a wide range of incidence angles, is proposed. The previously reported metasurfaces suffer from their maximum efficiencies shifting with the frequency when the incidence angle increases. By introducing a square-shaped metal via ring around the elements, the mutual coupling among adjacent cells is reduced so that the proposed metasurface can maintain maximum efficiency at the fixed operation frequency over a wide range of incidence angles. Furthermore,

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Li, Songquan, Laixu Gao, Changwei Zou, et al. "A Polarization-Independent Fiber-Optic SPR Sensor." Sensors 18, no. 10 (2018): 3204. http://dx.doi.org/10.3390/s18103204.

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Fiber-optic surface plasmon resonance (SPR) sensors possess the advantages of small size, flexible, allowing for a smaller sample volume, easy to be integrated, and high sensitivity. They have been intensively developed in recent decades. However, the polarizing nature of the surface plasmon waves (SPWs) always hinders the acquisition of SPR spectrum with high signal-noise ratio in wavelength modulation unless a polarizer is employed. The addition of polarizer complicates the system and reduces the degree of compactness. In this work, we propose and demonstrate a novel, polarization-independen

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46

Jiang, Kai Wei, Yu Tian Pan, Guan Jun Wang, and Jing Xiao. "Dispersion Management and Nonlinearity Enhancement in a Hybrid Nanofiber with a High Index, Cross-Slot-Structure Nanocore." Applied Mechanics and Materials 668-669 (October 2014): 17–21. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.17.

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A highly nonlinear, dispersion flattened hybrid nanofiber with a silicon/silica cross-slot-structure nanocore is proposed and analyzed, which is insensitive to polarization for implementing quasi-TE and quasi-TM fundamental modes transmission due to the cross slot effect. Simulation results show that fundamental mode with ultra-small mode effective areas and high nonlinearity at TE and TM polarizations, which are confined in the narrow cross slot by four silicon ribs, can be achieved via this cross-slot-structure core. Moreover, the cladding of four large-air-holes contributes to the tailoring

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47

Kaewrawang, Arkom, and Naruemon Wannawong. "Design of Multilayer Polarization Beam Splitters Using Multiobjective Evolutionary and Genetic Algorithms." Advanced Materials Research 931-932 (May 2014): 973–78. http://dx.doi.org/10.4028/www.scientific.net/amr.931-932.973.

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Multilayer polarization beam splitters (MPBSs) are important optical components in optical communication systems and optical devices. The components of transverse electric (TE) and transverse magnetic (TM) light plane wave in MPBSs are separated in different ways. In this paper, the Pareto optimization (multiobjective evolutionary and genetic algorithms) is used to design MPBSs on C-band frequency. The reflectances of TM light plane wave for Pareto optimization are the lowest and zero at the wavelength of 1.535 μm. The degree of polarization for Pareto optimization is the highest at wavelength

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Li, Qian, Junjie Tu, Yang Tian, and Yanli Zhao. "Polarization-Insensitive Waveguide Schottky Photodetectors Based on Mode Hybridization Effects in Asymmetric Plasmonic Waveguides." Sensors 20, no. 23 (2020): 6885. http://dx.doi.org/10.3390/s20236885.

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Two types of configurations are theoretically proposed to achieve high responsivity polarization-insensitive waveguide Schottky photodetectors, i.e., a dual-layer structure for 1.55 µm and a single-layer structure for 2 µm wavelength band. Mode hybridization effects between quasi-TM modes and sab1 modes in plasmonic waveguides are first presented and further investigated under diverse metal types with different thicknesses in this work. By utilizing the mode hybridization effects between quasi-TE mode and aab0 mode, and also quasi-TM and sab1 mode in our proposed hybrid plasmonic waveguide, li

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49

Zhou, Nan-Nan, Lei Kangxin, Guoqiang Xue, and Wen Chen. "Induced polarization effect on grounded-wire transient electromagnetic data from transverse electric and magnetic fields." GEOPHYSICS 85, no. 4 (2020): E111—E120. http://dx.doi.org/10.1190/geo2019-0322.1.

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Transient electromagnetic (TEM) data can be seriously distorted by induced polarization (IP) phenomena when a polarizable body is present. The TEM field generated by a grounded-wire source contains transverse electric (TE) and transverse magnetic (TM) modes. The IP effect is most commonly studied with the TEM total field, rather than considering the difference between TE and TM fields. To investigate the effect of IP phenomena on the TE and TM fields, we have performed a detailed analysis on IP-distorted TEM data based on numerical and field examples. We first compare the IP effect on the TE a

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50

Jafari, A., A. Rahmat, and S. Bakkeshizadeh. "Band structure of one-dimensional doped photonic crystal with three level atoms using the Fresnel coefficients method." International Journal of Modern Physics B 32, no. 01 (2018): 1750277. http://dx.doi.org/10.1142/s0217979217502770.

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We consider a one-dimensional photonic crystal (1DPC) composed of double-layered dielectrics. Electric permittivity and magnetic permeability of this crystal depends on the incident electromagnetic wave frequency. We suppose that three level atoms have been added to the second layer of each dielectric and this photonic crystal (PC) has been doped. These atoms can be added to the layer with different rates. In this paper, we have calculated and compared the band structure of the mentioned PC considering the effect of added atoms to the second layer with different rates through the Fresnel coeff

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