Transmission spectra of coated phase shifted long-period fiber gratings

被引：0
作者：
Gu Z.-T. [1 ]
Zhao X.-Y. [2 ]
Zhang J.-T. [1 ]
机构：
[1] Laboratory of Photo-electric Functional Films, College of Science, Shanghai University for Science and Technology
[2] Key Laboratory of Modern Optics, College of Optoelectric and Electric Information Engineering, Shanghai University for Science and Technology
来源：
Optoelectronics Letters | 2009年 / 5卷 / 4期
基金：
中国国家自然科学基金;
关键词：
Phase Shift; Transmission Spectrum; Fiber Bragg Grating; Core Mode; Transfer Matrix Method;
D O I：
10.1007/s11801-009-8196-6
中图分类号：
学科分类号：
摘要：
The transmission spectrum of the coated phase-shifted long-period fiber gratings (LPFGs) with single and multiple phase shifts is analyzed by the coupled-mode theory and the transfer matrix method, and the influences of the film parameters on the spectral characteristics are also studied. It is shown that these parameters will affect the LPFG filtering characteristics. The loss peak of transmission spectrum decreases with the increase of film thickness, and the peak position shifts with the film refractive index. Compared with the non-coated phase-shifted LPFG, the coated one has the similar desirable filtering characteristics, and it has a flexible ability to adjust the transmission properties. © Tianjin University of Technology and Springer-Verlag 2009.
引用
收藏
页码：244 / 247
页数：3
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