Literatura académica sobre el tema "Fiber Bragg Grating Pulse Recorder"
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Artículos de revistas sobre el tema "Fiber Bragg Grating Pulse Recorder"
Umesh, Sharath, Srivani Padma, Shikha Ambastha, Anand Kalegowda y Sundarrajan Asokan. "Pulse transit time differential measurement by fiber Bragg grating pulse recorder". Journal of Biomedical Optics 20, n.º 5 (28 de mayo de 2015): 057005. http://dx.doi.org/10.1117/1.jbo.20.5.057005.
Texto completoSharath, U., C. Shwetha, K. Anand y S. Asokan. "Radial arterial compliance measurement by fiber Bragg grating pulse recorder". Journal of Human Hypertension 28, n.º 12 (19 de junio de 2014): 736–42. http://dx.doi.org/10.1038/jhh.2014.45.
Texto completoRadzi, Nurnazifah M., Amirah A. Latif, Mohammad F. Ismail, Josephine Y. C. Liew, Noor A. Awang, Han K. Lee, Fauzan Ahmad, Siti F. Norizan y Harith Ahmad. "Tunable Spacing Dual-Wavelength Q-Switched Fiber Laser Based on Tunable FBG Device". Photonics 8, n.º 12 (23 de noviembre de 2021): 524. http://dx.doi.org/10.3390/photonics8120524.
Texto completoKulchin, Yuriy N., Anatoly M. Shalagin, Oleg B. Vitrik, Sergey A. Babin, Anton V. Dyshlyuk y Alexander A. Vlasov. "Differential Reflectometry of Fiber Bragg Gratings". Key Engineering Materials 437 (mayo de 2010): 324–28. http://dx.doi.org/10.4028/www.scientific.net/kem.437.324.
Texto completoAcharya, Anirudh R., Bram Vandekerckhove, Lars Emil Larsen, Jean Delbeke, Wytse J. Wadman, Kristl Vonck, Evelien Carette et al. "In vivo blue light illumination for optogenetic inhibition: effect on local temperature and excitability of the rat hippocampus". Journal of Neural Engineering 18, n.º 6 (1 de diciembre de 2021): 066038. http://dx.doi.org/10.1088/1741-2552/ac3ef4.
Texto completoPadma, Srivani, Sharath Umesh, Talabattula Srinivas y Sundarrajan Asokan. "Carotid Arterial Pulse Waveform Measurements Using Fiber Bragg Grating Pulse Probe". IEEE Journal of Biomedical and Health Informatics 22, n.º 5 (septiembre de 2018): 1415–20. http://dx.doi.org/10.1109/jbhi.2017.2765701.
Texto completoWang, Ming-Xiao, Ping-Xue Li, Yang-Tao Xu, Yun-Chen Zhu, Shun Li y Chuan-Fei Yao. "An All-Fiberized Chirped Pulse Amplification System Based on Chirped Fiber Bragg Grating Stretcher and Compressor". Chinese Physics Letters 39, n.º 2 (1 de febrero de 2022): 024201. http://dx.doi.org/10.1088/0256-307x/39/2/024201.
Texto completoLonghi, Stefano. "Klein Tunneling of Light in Fiber Bragg Gratings". Physics Research International 2010 (31 de agosto de 2010): 1–5. http://dx.doi.org/10.1155/2010/645106.
Texto completoChen, Xinxin, Enbo Wang, Yali Jiang, Hui Zhan, Hongwei Li, Guohui Lyu y Shuli Sun. "Generalized Resonance Sensor Based on Fiber Bragg Grating". Photonics 8, n.º 5 (6 de mayo de 2021): 156. http://dx.doi.org/10.3390/photonics8050156.
Texto completoXu, Qinfeng, Qiong Liu, Qing Ye, Zhengqing Pan, Haiwen Cai, Ronghui Qu y Zujie Fang. "Millimeter-wave pulse generation based on pulse reshaping using superstructure fiber Bragg grating". Optik 121, n.º 20 (octubre de 2010): 1853–58. http://dx.doi.org/10.1016/j.ijleo.2009.05.004.
Texto completoTesis sobre el tema "Fiber Bragg Grating Pulse Recorder"
Liu, Weilin. "Real-time Interrogation of Fiber Bragg Grating Sensors Based on Chirped Pulse Compression". Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20289.
Texto completoKim, Kyungbum. "ALL-SEMICONDUCTOR HIGH POWER MODE-LOCKED LASER SYSTEM". Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2482.
Texto completoPh.D.
Optics and Photonics
Optics
Rocha, HÃlio Henrique Barbosa. "Ressoadores e guias dielÃtricos cilÃndricos operando em micro-ondas e Ãptica: antenas dielÃtricas e acopladores refletores de Bragg a fibra". Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7068.
Texto completoCoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior
Duas contribuiÃÃes caracteristicamente distintas, nÃo obstante correlacionÃveis num mesmo sistema de telecomunicaÃÃo, sÃo apresentadas. A primeira versa sobre antenas ressoadoras constituÃdas por novas cerÃmicas dielÃtricas à base de Fe2O3. Os materiais desenvolvidos foram caracterizados na faixa de micro-ondas. Tratam-se de dielÃtricos com baixa permissividade relativa, baixa tangente de perda, e, no caso das amostras monofÃsicas, com coeficiente de temperatura na frequÃncia de ressonÃncia negativo. Posteriormente, as antenas ressoadoras dielÃtricas de geometria cilÃndrica (CDRAs) suportadas em plano de terra retangular e alimentadas por sonda monopolar sÃo analisadas segundo critÃrios de desempenho de irradiaÃÃo, quais sejam: frequÃncia de ressonÃncia, impedÃncia de entrada, largura de banda e padrÃes de irradiaÃÃo. AlÃm de experimentaÃÃo, o seu estudo envolveu procedimento computacional, no que foi promovida a comparaÃÃo de resultados. O mÃtodo dos elementos finitos, no qual està baseado o programa comercial empregado, foi utilizado para anÃlise destas antenas. Resulta que para maiores valores de permissividade relativa de uma amostra, menores sÃo a frequÃncia em que a mesma ressoa e a sua largura de banda. Ainda, foi observado satisfatÃrio casamento de impedÃncia e padrÃes de irradiaÃÃo "broadside", o que candidata os novos materiais desenvolvidos a esta importante aplicaÃÃo. Adicionalmente, mediante empilhamento dos protÃtipos monofÃsicos examinados, foi verificada a remodelagem da largura de banda em relaÃÃo Ãs contrapartidas individuais, provavelmente devido à excitaÃÃo de modos de ordem elevada das CDRAs. A segunda contribuiÃÃo està enfocada no contexto dos guias de ondas dielÃtricos operando em frequÃncias Ãpticas. Neste cenÃrio, sÃo investigados acopladores refletores de Bragg a fibra (FBGCs), estruturas resultantes da combinaÃÃo de dois dispositivos reconhecidamente versÃteis e de ampla aplicaÃÃo: redes de Bragg e acopladores direcionais. Foram apreciados dois estudos de caso numÃricos nos quais se fez promover a interaÃÃo de sinais Ãpticos com as estruturas propostas. Na medida em que descreve com satisfatÃria precisÃo as propriedades Ãpticas dos dispositivos de interesse, o modelo matemÃtico empregado à baseado na teoria dos modos acoplados. O tratamento numÃrico à realizado mediante codificaÃÃo, em linguagem de programaÃÃo FORTRAN, de um algoritmo preditivo-corretor. Considerando regimes pulsados em termos da potÃncia operacional, o problema foi analisado no domÃnio da frequÃncia e, sobretudo, no domÃnio do tempo. Em condiÃÃes especÃficas, a possibilidade de realizaÃÃo da extraÃÃo, reconfiguraÃÃo e comutaÃÃo de pulsos, exemplos de funÃÃes essenciais ao processamento totalmente Ãptico, reforÃam a importÃncia de tais estruturas hÃbridas.
Two heterogeneous contributions to modern communication systems â although fully possible to be correlated â are presented. The first one deals with resonant antennas consisting of new dielectric ceramics based on Fe2O3. These materials characterized at microwave frequency range possess low relative permittivity, low loss tangent and, concerned with the monophasic samples, negative temperature coefficient of resonant frequency. Subsequently, the cylindrical dielectric resonator antennas (CDRAs) supported on rectangular ground plane and fed by monopole are analyzed according to the following radiation performance criteria: resonant frequency, input impedance, bandwidth and radiation patterns. Besides experimentation, the study involved computational procedure, so that the results of both can be compared. A commercial software based on the finite element method was employed to examine the CDRAs. It follows that as higher is the permittivity of a material, the lower are the frequency at which it resonates as well as its bandwidth. Satisfactory impedance matching and broadside radiation patterns are observed, what enables the materials investigated to this relevant application. Additionally, the stacking of the monophasic CDRAs prototypes resulted in bandwidth enhancement, presumably due to their excited high order modes. The second contribution focuses on dielectric waveguides operating at optical frequencies, being fiber Bragg grating couplers (FBGCs) investigated in this scenario. Indeed, they result from a combination of two versatile and widely applied devices: fiber Bragg gratings and directional couplers. Two numerical case studies related to the interaction between optical signals and structures were performed. The theoretical model observed is based on the coupled mode theory since it provides a satisfactorily accurate description of the devices optical properties. By the way, the theoretical model is coded in FORTRAN programming language according to a predictor-corrector algorithm. In terms of operational power levels, analyses are carried out in frequency and (mainly) time domains. Under specific conditions, the capability of the extraction, reshaping and switching of pulses â examples of essential functions for all-optical processing â reinforces the importance of such hybrid structures.
Sharath, U. "Fiber Bragg Grating Based Sensing Devices for Novel Applications in Bio-medical and Engineering Fields". Thesis, 2015. https://etd.iisc.ac.in/handle/2005/4556.
Texto completoPadma, G. Srivani. "Fiber Bragg Grating Sensor Based Devices for Novel Biomedical Applications". Thesis, 2017. https://etd.iisc.ac.in/handle/2005/4316.
Texto completoLee, Hao-Xiang y 李浩祥. "Development of Non-invasive Optical Metrologies for Profiling Wrist Pulse-Applications of Laser Doppler Interferometer and Fiber Bragg Grating Sensor". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/93514828698371479892.
Texto completo國立臺灣大學
工程科學及海洋工程學研究所
105
Cardiovascular diseases have been the leading cause of death in recent years. Therefore, regular monitoring of blood pressure has become current trend of personalized health management. The most common and commercialized blood pressure portable device is the electronic sphygmomanometer. It is based on the principle of Oscillometry with a pressurized cuff to measure the systolic and diastolic blood pressure. However, it cannot measure the complete profile of blood pressure, and it is not a comfortable process. To overcome these limitations, current studies have turned to the direction of cuffless and continuous Sphygmomanometer. In this study, we use laser Doppler interferometer to measure the pulse amplitude of the wrist skin. The advantage of this system is it has a resolution as high as 0.08 nm, and the directional ambiguity can be removed by the quadrature interferometer. To increase the stability, we use a wristband to fix a corner cube on wrist and identify the suitable pressure in the range between 70~114 mmHg testing by using a film pressure sensor. We compared our system with Arteriovenous Ultrasound Scanner system and ECG monitor to verify its. Different pulse amplitudes were obtained from different objects, the measurement result was in the range between 25 to 56 μm. The correlation coefficient between pulse amplitude and blood flow velocity was between 0.4 and 0.7. The mean value of heart beating cycle and the result of electrocardiogram have a 73.3% similarity with a less than 0.05 second difference. The correlations among pulse amplitude, blood flow velocity and the accuracy of heart rate measurement were evident. To develop personalized blood pressure sensor, we further develop the fiber Bragg grating to measure the surface strain induced by wrist pulse vibrations. The Bragg wavelength offset of the fiber grating has a nearly linear relationship with surface strain. Using the four point bending test, we found that 1 micro strain could induce 0.1 pm wavelength shift with the correlation coefficient of 0.995. By adjusting the Bragg wavelength, this strain sensor can be applied to measure the profile of wrist pulse. This sensor could potentially combine with wearable device to achieve long time continuous monitoring of blood pressure.
Raghuwanshi, Sanjeev Kumar. "Analytical And Numerical Study Of Propagation In Optical Waveguides And Devices In Linear And Nonlinear Domains". Thesis, 2008. https://etd.iisc.ac.in/handle/2005/782.
Texto completoRaghuwanshi, Sanjeev Kumar. "Analytical And Numerical Study Of Propagation In Optical Waveguides And Devices In Linear And Nonlinear Domains". Thesis, 2008. http://hdl.handle.net/2005/782.
Texto completoActas de conferencias sobre el tema "Fiber Bragg Grating Pulse Recorder"
Kaczmarek, Tomasz y Zdzisław Kaczmarek. "Modified fiber Bragg grating pulse pressure sensor". En SPIE Proceedings, editado por Jan Wójcik y Waldemar Wójcik. SPIE, 2007. http://dx.doi.org/10.1117/12.739737.
Texto completoKrishna, VS Rakesh y E. S. Shivaleela. "Asymmetric-Pulse Shaping Technique Using Fiber Bragg Grating". En 2017 IEEE Workshop on Recent Advances in Photonics (WRAP). IEEE, 2017. http://dx.doi.org/10.1109/wrap.2017.8468587.
Texto completoFerchichi, Moez, Monia Najjar y Houria Rezig. "Pulse reflection of tunable Fiber Bragg Grating WDM filter". En 2010 17th International Conference on Telecommunications. IEEE, 2010. http://dx.doi.org/10.1109/ictel.2010.5478853.
Texto completoLi, Ming, Liyang Shao, Jacques Albert y Jianping Yao. "Chirped microwave pulse generation using a tilted fiber Bragg grating". En 2010 23rd Annual Meeting of the IEEE Photonics Society (Formerly LEOS Annual Meeting). IEEE, 2010. http://dx.doi.org/10.1109/photonics.2010.5699027.
Texto completoZhang, Chengtao, Xiaochao Wang, Wei Fan, Daxing Rao y Zunqi Lin. "Pulse multi-pass stretcher using linear chirped fiber Bragg grating". En ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, editado por Andreas Tünnermann, Zejin Liu, Pu Wang y Chun Tang. SPIE, 2013. http://dx.doi.org/10.1117/12.2035015.
Texto completoNishimura, Aikihko, Yukihiro Shimada, Yukihiro Yonemoto, Hirokazu Suzuki y Hisayoshi Ishibashi. "Development of pulse laser processing for mounting fiber Bragg grating". En LASER-DRIVEN RELATIVISTIC PLASMAS APPLIED TO SCIENCE, ENERGY, INDUSTRY, AND MEDICINE: The 3rd International Symposium. AIP, 2012. http://dx.doi.org/10.1063/1.4737569.
Texto completoEggleton, B. J., R. E. Slusher, T. A. Strasser y C. M. de Sterke. "High intensity pulse propagation in fiber Bragg gratings". En Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides. Washington, D.C.: Optica Publishing Group, 1997. http://dx.doi.org/10.1364/bgppf.1997.bmb.1.
Texto completoCuratu, George, Sophie LaRochelle, Claude Pare y Pierre-Andre Belanger. "Pulse shaping with a phase-shifted fiber Bragg grating for antisymmetric pulse generation". En Photonics West 2001 - LASE, editado por Yehuda B. Band. SPIE, 2001. http://dx.doi.org/10.1117/12.424698.
Texto completoKomukai, T., T. Yamamoto y S. Kawanishi. "Optical pulse generator using phase modulator and chirped fiber Bragg grating". En 2005 Optical Fiber Communications Conference Technical Digest. IEEE, 2005. http://dx.doi.org/10.1109/ofc.2005.193000.
Texto completoWang, Chao y Jianping Yao. "Fourier-transform pulse shaping using a single chirped fiber Bragg grating". En Multimedia Technology (IC-BNMT). IEEE, 2009. http://dx.doi.org/10.1109/icbnmt.2009.5347815.
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