Reconstruction of chirped fiber Bragg grating parameters and phase spectrum using two thermally modulated intensity spectra and a genetic algorithm

Jen-Fa Huan, Yu-Lung Lo, Hsu Chih Cheng, Song Huei Huang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study presents a synthesis method for reconstructing the multiple parameters such as grating position, length, period profile, refractive index modulation, and phase response of a chirped fiber Bragg grating (FBG) and its phase spectrum using two thermally modulated reflection intensity spectra and a genetic algorithm. In the proposed approach, the FBG parameters are determined using the genetic algorithm and are then used to reconstruct the phase response. The advantages of the proposed method include its simplicity, low cost, and nondestructive nature. Furthermore, the proposed method does not require a prior knowledge of the sign of the chirp of the grating period distribution of FBGs.

Original languageEnglish
Pages (from-to)346-348
Number of pages3
JournalIEEE Photonics Technology Letters
Volume18
Issue number2
DOIs
Publication statusPublished - 2006 Jan 15

Fingerprint

phase response
Fiber Bragg gratings
genetic algorithms
Bragg gratings
Genetic algorithms
gratings
fibers
chirp
Refractive index
Modulation
refractivity
modulation
synthesis
profiles
Costs

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

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T1 - Reconstruction of chirped fiber Bragg grating parameters and phase spectrum using two thermally modulated intensity spectra and a genetic algorithm

AU - Huan, Jen-Fa

AU - Lo, Yu-Lung

AU - Cheng, Hsu Chih

AU - Huang, Song Huei

PY - 2006/1/15

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N2 - This study presents a synthesis method for reconstructing the multiple parameters such as grating position, length, period profile, refractive index modulation, and phase response of a chirped fiber Bragg grating (FBG) and its phase spectrum using two thermally modulated reflection intensity spectra and a genetic algorithm. In the proposed approach, the FBG parameters are determined using the genetic algorithm and are then used to reconstruct the phase response. The advantages of the proposed method include its simplicity, low cost, and nondestructive nature. Furthermore, the proposed method does not require a prior knowledge of the sign of the chirp of the grating period distribution of FBGs.

AB - This study presents a synthesis method for reconstructing the multiple parameters such as grating position, length, period profile, refractive index modulation, and phase response of a chirped fiber Bragg grating (FBG) and its phase spectrum using two thermally modulated reflection intensity spectra and a genetic algorithm. In the proposed approach, the FBG parameters are determined using the genetic algorithm and are then used to reconstruct the phase response. The advantages of the proposed method include its simplicity, low cost, and nondestructive nature. Furthermore, the proposed method does not require a prior knowledge of the sign of the chirp of the grating period distribution of FBGs.

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