The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

An Automatic Control of Reflective Wavelength of TFBG Using Fabry-Perot Filter

Fabry-Perot 필터를 이용한 가변 광섬유격자의 반사파장 자동조절

  • 반재경 (전북대학교 전기전자컴퓨터공학부) ;
  • 김지도 (전북대학교 전기전자컴퓨터공학부) ;
  • 전금수 (두산전자)
  • Published : 2009.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose and describe our implementation of an automatic control system for the center wavelength of a fiber Bragg grating. The proposed system consists of a Fabry-Perot filter and cantilever structure controlled by a step motor interfacing computer. We consider the change of the center wavelength and the reflective spectrum shape for a given FBG according to the translation distance of the push stick and the cantilever thickness variation. The proposed system can control the center wavelength of a FBG with a resolution of 0.01 nm by applying compression or extension to the FBG. The proposed system has characteristics that keep the desired wavelength of the FBG with a variation of environmental conditions.

본 논문에서는 광섬유격자 반사파장의 중심값을 자동으로 조절하기 위한 시스템을 제안하고 구현한 내용을 기술한다. 제안한 시스템은 Fabry-Perot 필터와 컴퓨터에 연결된 스텝 모터로 제어되는 외팔보 구조로 구성된다. 외팔보의 두께 변화와 밀대의 미는 위치에 따른 주어진 광섬유격자 반사파장의 스펙트럼 모양과 중심값의 변화를 살펴본다. 제안한 시스템은 광섬유격자에 압축 또는 인장을 가함으로서 0.01 nm 분해능으로 광섬유격자 반사파장의 중심값을 제어할 수 있다. 본 시스템은 광섬유격자 주위 환경 조건의 변화에도 원하는 반사파장을 유지하는 특성을 가진다.

Keywords

References

  1. A. Othonos and K. Kalli, Fiber Bragg Gratings : Fundamentals and applications intelecommunications and sensing, Artech House, Inc., 1999
  2. A.D. Kersey, M.A. Davis, 'Fiber Grating Sensors,' J. Lightwave Technol., vol. 15, no. 8, pp. 1442-1462, Aug. 1997 https://doi.org/10.1109/50.618377
  3. R. Kashyap, Fiber Bragg Gratings, Academic Press, 1999
  4. Y. W. Song, D. Starodubov, Z. Pan, Y.Xie, A. E. Willner, and J. Feinberg, "Tunable WDM dispersion compensation with fixed bandwidth and fixed passband center wavelength using a uniform FBG," IEEE Photon. Technol. Lett., vol. 14, no. 8, pp. 1193-1195, Aug. 2002 https://doi.org/10.1109/LPT.2002.1022015
  5. T. Imai, T. Komukai, and M. Nakazawa, "Dispersion tuning of a linearly chirped fiber Bragg grating without a center wavelength shift by applying a strain gradient," IEEE Photon. Technol. Lett., vol. 10, no. 6, pp. 845-847, June 1998 https://doi.org/10.1109/68.681505
  6. N. Mohammad, W. Szyszkowski, W. J. Zhang, E. I. Haddad, W. Jamroz, and R. Kruzelecky, 'Analysis and development of a tunable fiber Bragg grating filter based on axial tension/compression,' J. Lightwave Technol., vol. 22, no. 8, pp. 2001-2013, Aug. 2004 https://doi.org/10.1109/JLT.2004.832439
  7. C. S. Goh, M. R. Mokhtar, S. A. Butler, S. Y. Set, and K. Kikuchi, "Wavelength tuning of fiber Bragg gratings over 90 nm using a simple tuning package," IEEE Photon. Technol. Lett., vol. 15, no. 4, pp. 557-559, Apr. 2003 https://doi.org/10.1109/LPT.2003.809300