Добірка наукової літератури з теми "Integrated Bragg Gratings"
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Статті в журналах з теми "Integrated Bragg Gratings"
Bartelt, Hartmut. "Trends in Bragg Grating Technology for Optical Fiber Sensor Applications." Key Engineering Materials 437 (May 2010): 304–8. http://dx.doi.org/10.4028/www.scientific.net/kem.437.304.
Повний текст джерелаSimard, Alexandre D., Yves Painchaud, and Sophie LaRochelle. "Integrated Bragg gratings in spiral waveguides." Optics Express 21, no. 7 (April 4, 2013): 8953. http://dx.doi.org/10.1364/oe.21.008953.
Повний текст джерелаMunster, Petr, and Tomas Horvath. "Intelligent Technical Textiles Based on Fiber Bragg Gratings for Strain Monitoring." Sensors 20, no. 10 (May 22, 2020): 2951. http://dx.doi.org/10.3390/s20102951.
Повний текст джерелаDhavamani, Vigneshwar, Srijani Chakraborty, S. Ramya, and Somesh Nandi. "Design and Simulation of Waveguide Bragg Grating based Temperature Sensor in COMSOL." Journal of Physics: Conference Series 2161, no. 1 (January 1, 2022): 012047. http://dx.doi.org/10.1088/1742-6596/2161/1/012047.
Повний текст джерелаZhong, Huajian, Xueya Liu, Cailing Fu, Baijie Xu, Jun He, Pengfei Li, Yanjie Meng, et al. "Quasi-Distributed Temperature and Strain Sensors Based on Series-Integrated Fiber Bragg Gratings." Nanomaterials 12, no. 9 (May 2, 2022): 1540. http://dx.doi.org/10.3390/nano12091540.
Повний текст джерелаField, James W., Sam A. Berry, Rex H. S. Bannerman, Devin H. Smith, Corin B. E. Gawith, Peter G. R. Smith, and James C. Gates. "Highly-chirped Bragg gratings for integrated silica spectrometers." Optics Express 28, no. 14 (July 2, 2020): 21247. http://dx.doi.org/10.1364/oe.389211.
Повний текст джерелаSimard, A. D., N. Ayotte, Y. Painchaud, S. Bedard, and S. LaRochelle. "Impact of Sidewall Roughness on Integrated Bragg Gratings." Journal of Lightwave Technology 29, no. 24 (December 2011): 3693–704. http://dx.doi.org/10.1109/jlt.2011.2173556.
Повний текст джерелаAyotte, Nicolas, Alexandre D. Simard, and Sophie LaRochelle. "Long Integrated Bragg Gratings for SoI Wafer Metrology." IEEE Photonics Technology Letters 27, no. 7 (April 1, 2015): 755–58. http://dx.doi.org/10.1109/lpt.2015.2391174.
Повний текст джерелаKaur, Manjinder, and Sanjeev Dewra. "Investigation of Photonic Integrated Circuits with Low-Loss Bragg Gratings." Journal of Optical Communications 41, no. 3 (April 28, 2020): 229–33. http://dx.doi.org/10.1515/joc-2017-0177.
Повний текст джерелаTu, Donghe, Xingrui Huang, Yuxiang Yin, Hang Yu, Zhiguo Yu, Huan Guan, and Zhiyong Li. "Mode-Conversion-Based Chirped Bragg Gratings on Thin-Film Lithium Niobate." Photonics 9, no. 11 (November 4, 2022): 828. http://dx.doi.org/10.3390/photonics9110828.
Повний текст джерелаДисертації з теми "Integrated Bragg Gratings"
Strain, Michael. "Integrated chirped Bragg gratings for dispersion control." Thesis, University of Glasgow, 2007. http://theses.gla.ac.uk/440/.
Повний текст джерелаDelisle, Simard Alexandre. "Integrated bragg gratings in silicon-on-insulator." Thesis, Université Laval, 2014. http://www.theses.ulaval.ca/2014/30629/30629.pdf.
Повний текст джерелаIn the literature, integrated Bragg gratings in Silicon-on-Insulator are relatively simple compared to their fibre Bragg grating counterpart. However, elaborate gratings could improve the signal processing capability of the silicon platform. Thus, this thesis addresses the issues that prevent the design, the fabrication and the characterization of Bragg gratings having elaborate spectral response in the silicon platform. Firstly, in order to precisely characterize Bragg gratings complex spectral response, we proposed to suppress parasitic reflections using temporal filtering. The results obtained with measurement technique, when used with an integral layer peeling algorithm, allowed us to retrieve the amplitude and phase profiles of the grating thus providing a complete characterization of the structure. Moreover, the addition of a low-pass spatial filter allowed improving the characterization process by reducing the measurement noise. Secondly, the main sources of distortion of Bragg gratings spectral response have been identified to be the sidewall roughness and the wafer height fluctuation. An exhaustive study of the impact of these phenomena has been done both numerically and analytically. Furthermore, for the first time, the autocorrelation of these noise sources has been characterized experimentally on a sufficient length. Finally, improvements in the waveguide designs have reduced significantly these effects which allowed the fabrication of Bragg gratings in silicon with the smallest bandwidth published to date. Thirdly, the first demonstration of apodized Bragg gratings using only phase modulation of the structure has been done (i.e. phase apodisation and superposition apodisation). Unlike already published techniques, the later ones have the advantage to be robust to deep-UV lithography and fabrication errors. Furthermore, they do no introduce distortions into the grating phase profile and they are compatible with gratings having small recesses. Finally, in order to increase the grating length while keeping their dimension compatible with the silicon chip size, we proposed to bend them in a compact spiral shape. To do this properly, the curvature impact on the effective index has been modeled and compensated successfully by modifying the grating period. Thus, we have shown that 2 mm long gratings can be integrated on a surface of 200 µm x 190 µm without the addition of spectral degradation and without restrictions on the design structure. These results are of importance because longer grating structures with weaker coupling coefficients and a precise control both on its phase and amplitude are required in order to achieve integrated optical filters with elaborate spectral responses. Thus, we believe that the work presented in this thesis open the door to many new grating-based optical filter designs compatible with integrated optics technologies.
Simard, Alexandre D. "Integrated Bragg gratings in silicon-on-insulator." Doctoral thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25032.
Повний текст джерелаIn the literature, integrated Bragg gratings in Silicon-on-Insulator are relatively simple compared to their fibre Bragg grating counterpart. However, elaborate gratings could improve the signal processing capability of the silicon platform. Thus, this thesis addresses the issues that prevent the design, the fabrication and the characterization of Bragg gratings having elaborate spectral response in the silicon platform. Firstly, in order to precisely characterize Bragg gratings complex spectral response, we proposed to suppress parasitic reflections using temporal filtering. The results obtained with measurement technique, when used with an integral layer peeling algorithm, allowed us to retrieve the amplitude and phase profiles of the grating thus providing a complete characterization of the structure. Moreover, the addition of a low-pass spatial filter allowed improving the characterization process by reducing the measurement noise. Secondly, the main sources of distortion of Bragg gratings spectral response have been identified to be the sidewall roughness and the wafer height fluctuation. An exhaustive study of the impact of these phenomena has been done both numerically and analytically. Furthermore, for the first time, the autocorrelation of these noise sources has been characterized experimentally on a sufficient length. Finally, improvements in the waveguide designs have reduced significantly these effects which allowed the fabrication of Bragg gratings in silicon with the smallest bandwidth published to date. Thirdly, the first demonstration of apodized Bragg gratings using only phase modulation of the structure has been done (i.e. phase apodisation and superposition apodisation). Unlike already published techniques, the later ones have the advantage to be robust to deep-UV lithography and fabrication errors. Furthermore, they do no introduce distortions into the grating phase profile and they are compatible with gratings having small recesses. Finally, in order to increase the grating length while keeping their dimension compatible with the silicon chip size, we proposed to bend them in a compact spiral shape. To do this properly, the curvature impact on the effective index has been modeled and compensated successfully by modifying the grating period. Thus, we have shown that 2 mm long gratings can be integrated on a surface of 200 µm x 190 µm without the addition of spectral degradation and without restrictions on the design structure. These results are of importance because longer grating structures with weaker coupling coefficients and a precise control both on its phase and amplitude are required in order to achieve integrated optical filters with elaborate spectral responses. Thus, we believe that the work presented in this thesis open the door to many new grating-based optical filter designs compatible with integrated optics technologies.
Khan, Mohammad Jalal. "Integrated optical filters using Bragg gratings and resonators." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8340.
Повний текст джерелаIncludes bibliographical references (p. [207]-213).
This thesis provides an in-depth study of optical filters made using integrated Bragg gratings and Bragg resonators. Various topologies for making add/drop filters using integrated gratings are outlined. Each class of devices is studied in detail and the theoretical tools needed for designing the add/drop are developed. First-order filters using Bragg resonators do not meet WDM add/drop filter specifications. Consequently, schemes to design higher-order filters are derived. The relative advantages and disadvantages of the various possiblities are outlined. Preliminary integrated Bragg grating devices, in InP, were designed using the tools developed. The fabricated devices were measured. The measurements revealed low-loss structures with a < 0.1 cm-l and high-Q Bragg resonators with Q > 40, 000. Measurements on higher-order inline coupled Bragg resonator filters showed flat-top and fast roll-offs. The results of the measurements and comparison with the theory are presented for the various devices. The results reveal that Bragg grating based devices offer tremendous potential for use as add/drop filters in WDM systems.
by Mohammad Jalal Khan.
Ph.D.
Tashtush, Aktham Atallah Mofleh. "Characterization of integrated Bragg gratings in silicon-on-insulator." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/7670/.
Повний текст джерелаDas, Bijoy Krishna. "Integrated optical distributed Bragg reflector and distributed feedback lasers in Er:LiNbO3 waveguides with photorefractive gratings." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969348541.
Повний текст джерелаDas, Bijoy Krishna [Verfasser]. "Integrated Optical Distributed Bragg Reflector and Distributed Feedback Lasers in Er:LiNbO3 Waveguides with Photorefractive Gratings / Bijoy Krishna Das." Aachen : Shaker, 2003. http://d-nb.info/1179039815/34.
Повний текст джерелаGiuntoni, Ivano [Verfasser], and Klaus [Akademischer Betreuer] Petermann. "Tunable integrated module for the optical dispersion compensation based on Bragg gratings in silicon / Ivano Giuntoni. Betreuer: Klaus Petermann." Berlin : Universitätsverlag der TU Berlin, 2013. http://d-nb.info/1066546320/34.
Повний текст джерелаMengin, Fondragon Mikhael de. "Etude d'un spéctromètre intégré SWIFTS pour réaliser des capteurs optiques fibrés pour les sciences de l'observation." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT085/document.
Повний текст джерелаSWIFTS, or Stationary-Wave Integrated Fourier-Transform Spectrometer, is an extremely integrated very high resolution spectrometer. This spectroscopy technology represents a major advance in the field and will be used here as a Fiber Bragg Gratings interrogator. Combining such a spectrometer with very sensitive Bragg sensors, like grating Fabry-Perot cavity (GFPC) as long as 20 mm, will allow to measure high precision temperature or strain variation. Applications of Bragg sensors are numerous, especially in structure monitoring and nuclear power plants safety. Despite promising capabilities, Bragg sensors never reached the desired sensibility for earth-science observation purposes. Present applications are restricted to civil-engineering strain-gauge sensors with microstrain sensitivity. However, the ability to detect and record signals of the order of a few tens of nanostrain is of great interest to monitor and model the volcanic and seismological processes. I demonstrate in this thesis the first use of a Fourier-Transform spectrometer combined with Fiber Bragg Sensors in a field configuration to achieve extremely high precision measurement on earth's crustal deformation. Precisions of thirty nanostrains on a very short base were achieved in the Low-Noise Underground Laboratory (LSBB) at Rustrel. Crustal monitoring opens the way for numerous applications especially in geophysics. A second study presented in this thesis aims at benchmarking several strain sensors based on optical fiber Bragg grating. For this purpose, two reinforced concrete beams have been tested in three points bending up to ultimate limit state
Wosinski, Lech. "Technology for photonic components in silica/silicon material structure." Doctoral thesis, KTH, Microelectronics and Information Technology, IMIT, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3556.
Повний текст джерелаThe main objectives of this thesis were to develop a lowtemperature PECVD process suitable for optoelectronicintegration, and to optimize silica glass composition forUV-induced modifications of a refractive index in PECVDfabricated planar devices. The most important achievement isthe successful development of a low temperature silicadeposition, which for the first time makes it is possible tofabricate good quality low loss integrated components whilekeeping the temperature below 250oC during the entirefabrication process. Two strong absorption peaks thatappear at1.5 mm communication window due to N-H and Si-H bonds have beencompletely eliminated by process optimization. This openspossibilities for monolithic integration with other,temperature sensitive devices, such as semiconductor lasers anddetectors, or polymer-based structures on the common siliconplatform. PECVD technology for low loss amorphous silicon inapplication to SiO2/Si based photonic crystal structures hasbeen also optimized to remove hydrogen incorporated during thedeposition process, responsible for the porosity of thedeposited material and creation of similar to silica absorptionbands.
Change of the refractive index of germanium doped silicaunder UV irradiation is commonly used for fabrication of UVinduced fiber Bragg gratings. Here we describe our achievementsin fabrication of fiber Bragg gratings and their application todistributed sensor systems. Recently we have built up a laserlab for UV treatment in application to planar technology. Wehave demonstrated the high photosensitivity of PECVD depositedGe-doped glasses (not thermally annealed) even without hydrogenloading, leading to a record transmission suppression of 47dBin a Bragg grating photoinduced in a straight buried channelwaveguide. We have also used a UV induced refractive indexchange to introduce other device modifications or functions,such as phase shift, wavelength trimming and control ofpolarization birefringence.The developed low temperature technology and the UVprocessing form a unique technology platform for development ofnovel integrated functional devices for optical communicationsystems.
A substantial part of the thesis has been devoted tostudying different plasma deposition parameters and theirinfluence on the optical characteristics of fabricatedwaveguides to find the processing window giving the besttrade-off between the deposition rate,chamber temperatureduring the process, optical losses and presence of absorptionbands within the interesting wavelength range. The optimalconditions identified in this study are low pressure (300-400mTorr), high dilution of silane in nitrous oxide and high totalflow (2000 sccm), low frequency (380 KHz) RF source and high RFpower levels (800-1000 W).
The thesis provides better understanding of the plasmareactions during the deposition process. RF Power is the keyparameter for increasing the rate of surface processes so as toaccommodate each atomic layer in the lowest energy statepossible. All the process conditions which favor a moreenergetic ion bombardment (i.e. low pressure, low frequency andhigh power) improve the quality of the material, making it moredense and similar to thermal oxide, but after a certain pointthe positive trend with increasing power saturates. As theenergy of the incoming ion increases, a competing effect setsin at the surface: ion induced damage and resputtering.
Finally, the developed technologies were applied for thefabrication of some test and new concept devices for opticalcommunication systems including multimode interference (MMI)-based couplers/splitters, state-of-the-art arrayed waveguidegrating-based multi/ demultiplexers, the first Bragg gratingassisted MMI-based add-drop multiplexer, as well as moreresearch oriented devices such as a Mach-Zehnder switch basedon silica poling and a Photonic Crystal-based coupler.
Keywords:silica-on-silicon technology, PECVD, plasmadeposition, photonic integrated circuits, planar waveguidedevices, UV Bragg gratings, photosensitivity, arrayed waveguidegratings, multimode interference couplers, add-dropmultiplexers.
Частини книг з теми "Integrated Bragg Gratings"
Voet, Eli, Geert Luyckx, Ives De Baere, Joris Degrieck, J. Vlekken, E. Jacobs, and Hartmut Bartelt. "High Strain Monitoring during Fatigue Loading of Thermoplastic Composites Using Imbedded Draw Tower Fibre Bragg Grating Sensors." In Emboding Intelligence in Structures and Integrated Systems, 441–46. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908158-13-3.441.
Повний текст джерела"Fibre Bragg gratings/microelectromechanical system-integrated optical devices." In Fibre Bragg Gratings in Harsh and Space Environments: Principles and applications, 173–89. Institution of Engineering and Technology, 2019. http://dx.doi.org/10.1049/pbcs069e_ch8.
Повний текст джерелаKikuchi, Kazaro. "Fiber Bragg Grating (FBG)." In Encyclopedic Handbook of Integrated Optics, 64–73. CRC Press, 2018. http://dx.doi.org/10.1201/9781315220949-10.
Повний текст джерелаBraunfelds, Janis, Sandis Spolitis, Jurgis Porins, and Vjaceslavs Bobrovs. "Fiber Bragg Grating Sensors Integration in Fiber Optical Systems." In Optical Fiber [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94289.
Повний текст джерелаWang, Z. F., J. Wang*, J. Q. Zhang, C. B. Tian, Q. M. Sui, Y. N. Dong, L. Jia, and X. M. Liang. "Deformation classifying and reconstructing method for smart Geogrid integrated with fiber Bragg grating sensors." In Life-Cycle Civil Engineering: Innovation, Theory and Practice, 1007–13. CRC Press, 2021. http://dx.doi.org/10.1201/9780429343292-133.
Повний текст джерелаТези доповідей конференцій з теми "Integrated Bragg Gratings"
Lin, C., E. W. Jacobs, and J. S. Rodgers. "Spiral planar-waveguide Bragg gratings." In SPIE OPTO: Integrated Optoelectronic Devices, edited by Jean-Emmanuel Broquin and Christoph M. Greiner. SPIE, 2009. http://dx.doi.org/10.1117/12.808341.
Повний текст джерелаJantzen, A., C. Holmes, S. G. Lynch, M. T. Posner, R. H. S. Bannerman, and P. G. R. Smith. "Tilted Bragg Gratings in Integrated Optical Fiber." In Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/bgpp.2016.bt2b.2.
Повний текст джерелаMeltz, Gerald. "Fiber Bragg grating devices and applications." In Integrated Photonics Research. Washington, D.C.: Optica Publishing Group, 1991. http://dx.doi.org/10.1364/ipr.1991.mc1.
Повний текст джерелаSun, Hao, and Lawrence R. Chen. "Phase-shifted waveguide Bragg gratings enabled by subwavelength grating structures." In Integrated Photonics Research, Silicon and Nanophotonics. Washington, D.C.: OSA, 2021. http://dx.doi.org/10.1364/iprsn.2021.im2a.4.
Повний текст джерелаSimard, Alexandre D., Yves Painchaud, and Sophie LaRochelle. "Characterization of Integrated Bragg Grating Profiles." In Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/bgpp.2012.bm3d.7.
Повний текст джерелаSimard, Alexandre D., Yves Painchaud, and Sophie LaRochelle. "Integrated Bragg gratings in curved waveguides." In 2010 23rd Annual Meeting of the IEEE Photonics Society (Formerly LEOS Annual Meeting). IEEE, 2010. http://dx.doi.org/10.1109/photonics.2010.5699094.
Повний текст джерелаWang, Xu, Han Yun, and Lukas Chrostowski. "Integrated Bragg Gratings in Spiral Waveguides." In CLEO: Science and Innovations. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/cleo_si.2013.cth4f.8.
Повний текст джерелаMatsumoto, Masayuki. "Analysis of the blazing effect in second-order gratings." In Integrated Photonics Research. Washington, D.C.: Optica Publishing Group, 1990. http://dx.doi.org/10.1364/ipr.1990.wc2.
Повний текст джерелаPoga, Constantina, Robert Blomquist, Louay A. Eldada, and Robert A. Norwood. "Polymer Bragg gratings for wavelength division multiplexers." In Optoelectronics '99 - Integrated Optoelectronic Devices, edited by Ivan Cindrich, Sing H. Lee, and Richard L. Sutherland. SPIE, 1999. http://dx.doi.org/10.1117/12.349313.
Повний текст джерелаGuyot, Clément, Gwenn Ulliac, Arnaud Gerthoffer, Jean Dahdah, Benattou Sadani, Blandine Guichardaz, Roland Salut, Maria-Pilar Bernal, Fadi Baida, and Nadège Courjal. "Characterization of extremely short LiNbO3 Bragg gratings." In Integrated Photonics Research, Silicon and Nanophotonics. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/iprsn.2013.jt3a.13.
Повний текст джерела