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Optical Engineering

Design of fiber Bragg gratings with arbitrary reflective spectrum
Author(s): Kunhua Wen; Lianshan Yan; Wei Pan; Bin Luo
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Paper Abstract

The reflective spectrum of fiber Bragg gratings (FBGs) might be regarded as the spatial Fourier transform (FT) of the refractive index modulation when the reflection is low. Therefore, the normalized amplitude and the phase which are obtained from the inverse FT of the expected reflection shape are the significant factors for designing the intensity and phase modulation of the index change, respectively. By carefully incorporating and designing the intensity and the phase modulations, we obtain FBGs with arbitrary reflective spectra including cosine/sine, triangle, sawtooth, trapezia and upside-down triangle shapes. Simulation results based on the piecewise uniform method further confirm the proposed method. Such FBGs can easily find their applications in signal generation, parameter demodulation, and so on.

Paper Details

Date Published: 1 May 2011
PDF: 5 pages
Opt. Eng. 50(5) 054003 doi: 10.1117/1.3582173
Published in: Optical Engineering Volume 50, Issue 5
Show Author Affiliations
Kunhua Wen, Southwest Jiaotong Univ. (China)
Lianshan Yan, Southwest Jiaotong Univ. (China)
Wei Pan, Southwest Jiaotong Univ. (China)
Bin Luo, Southwest Jiaotong Univ. (China)

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