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19 October 2001 Analysis of long-period fiber grating with fast-varying parameters and its optimization by genetic algorithm
Hong Ke, Jihu M. Peng, Chongcheng Fan
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Proceedings Volume 4579, Optical Fiber and Planar Waveguide Technology; (2001) https://doi.org/10.1117/12.444905
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China
Abstract
A transfer matrix of an arbitrary period in a long-period fiber grating (LPFG) is derived. Cascade of such matrices can be used easily to calculate the overall performance of LPFG with fast variation in parameters (which is common practice in LPFGs) such as period length, strength, etc. more precisely. Results show that the difference in transmittivity between our work and traditional coupled-mode theory becomes obvious when abrupt change such as (pi) phase-shift occurs. This method can be used in the mask design aiming at overall performance optimization through period-by-period pattern adjustment. Finally, a genetic algorithm is used to optimize the LPFG period by period.
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Hong Ke, Jihu M. Peng, and Chongcheng Fan "Analysis of long-period fiber grating with fast-varying parameters and its optimization by genetic algorithm", Proc. SPIE 4579, Optical Fiber and Planar Waveguide Technology, (19 October 2001); https://doi.org/10.1117/12.444905
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KEYWORDS
Genetic algorithms
Optimization (mathematics)
Current controlled current source
Matrices
Optical fibers
Planar waveguides
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