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Proceedings Paper

Effect of the cladding-mode coupling losses on the spectrum of a multi-channel fiber Bragg grating
Author(s): Hongpu Li; Yuusaka Nakamura; Kazuhiko Ogusu; Yunlong Sheng
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Paper Abstract

Effect of the cladding-mode coupling losses on the spectrum of multi-channel fiber Bragg grating (FBG) has been numerically investigated on the basis of the extended coupled-mode equations. It has been shown that there exists a reflection slope in the spectrum of both the intra- and inter-channels due to the existences of the cladding-modes. This slope could be larger than 1 dB when the induced index change is about 3x10-3, which makes the channels especially the one at the shortest wavelength considerably asymmetric. For comparison, a 39-channel linearly chirped FBG with a channel spacing of 0.8 nm and a chromatic dispersion of -850 ps/nm has been designed and fabricated. The experimental results show good agreement with the numerical ones.

Paper Details

Date Published: 28 January 2006
PDF: 7 pages
Proc. SPIE 6025, ICO20: Optical Communication, 60251V (28 January 2006); doi: 10.1117/12.667082
Show Author Affiliations
Hongpu Li, Shizuoka Univ. (Japan)
Yuusaka Nakamura, Shizuoka Univ. (Japan)
Kazuhiko Ogusu, Shizuoka Univ. (Japan)
Yunlong Sheng, Laval Univ. (Canada)


Published in SPIE Proceedings Vol. 6025:
ICO20: Optical Communication
Yun-Chur Chung; Shizhong Xie, Editor(s)

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