Novel algorithm for synthesis of fiber gratings

doi:10.1007/s12200-009-0018-8

Front Optoelec Chin

2009, Vol. 2

Issue (3) : 279-284 https://doi.org/10.1007/s12200-009-0018-8

RESEARCH ARTICLE

Novel algorithm for synthesis of fiber gratings

Bo LV^1,2(

), Ming CHEN^1,2, Dan LU^1,2, Taorong GONG^1,2, Tangjun LI^1,2, Shuisheng JIAN^1,2

1. Key Laboratory of All Optical Network and Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China; 2. Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China

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Abstract

A novel algorithm for the synthesis of fiber gratings is presented. For the first time we propose an effective optimal approach to construct a coupling coefficient function by employing 4th-order Runge-Kutta (R-K) analysis method for calculating the reflection spectra of fiber gratings. The numerical results show that with this proposed method, some required optical filters have been yielded with better features compared with other methods such as Gel’Fand-Levitan-Marchenko (GLM) algorithm. In addition, the performance of different interpolation functions particularly utilized in our algorithm, including linear-type, spline-type, and Hermit-type, are discussed in detail.

Keywords gratings inverse problem synthesis algorithm,coupling coefficient function interpolation functions apodization

Corresponding Author(s): LV Bo,Email:fengdieer_13@126.com

Issue Date: 05 September 2009

Cite this article:

Bo LV,Ming CHEN,Dan LU, et al. Novel algorithm for synthesis of fiber gratings[J]. Front Optoelec Chin, 2009, 2(3): 279-284.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-009-0018-8
https://academic.hep.com.cn/foe/EN/Y2009/V2/I3/279

Tab.1 Parameters in synthesis algorithm

Fig.1 Calculated reflection spectra with different interpolation functions and GLM

Fig.2 Corresponding coupling coefficient function () for building bandpass filter

Fig.3 Coupling coefficient function () for building bandpass filter with low dispersion

Fig.4 In-band dispersion for building bandpass filter with low dispersion

Fig.5 Calculated reflection spectra for bandpass filter with low dispersion

Tab.2 Numerical results with different interpolation functions and GLM for low-dispersion bandpass filter

Fig.6 Practical dispersion grating. (a) Manufactured apodization board with synthesis method; (b) measured reflection spectrum and group delay of chirped fiber Bragg grating

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