Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Tunable dispersion compensator based on chirped fiber bragg gratings with a mechanical rotator

회전기와 첩 광섬유 격자를 이용한 가변 분산 보상기

  • 김준희 (한국과학기술연구원 광기술연구센터) ;
  • 배준기 (한국과학기술연구원 광기술연구센터) ;
  • 한영근 (한국과학기술연구원 광기술연구센터) ;
  • 김상혁 (한국과학기술연구원 광기술연구센터) ;
  • 이상배 (한국과학기술연구원 광기술연구센터) ;
  • 정제명 (한양대학교 전자통신전파공학과)
  • Published : 2004.04.01
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Abstract

A systematic method for tunable dispersion compensation based on chirped fiber Bragg gratings without a center wavelength shift is proposed. The specially designed mechanical rotator can flexibly control the chirping ratio along the fiber grating and the corresponding dispersion value. The group delay can be linearly controllable since the proposed method can induce a linear strain gradient with the rotation angle change. The dispersion value could be controlled from 228.04 ㎰/nm to 1430.7 ㎰/nm with small center wavelength shift, which was less than 0.03 nm.

본 논문에서는 첩 광섬유 격자를 이용한 가변 분산 보상기를 소개한다. 개발된 가변 분산 보상기는 금속판의 벤딩에 의해 유도되는 인장력과 수축력에 대한 분석을 기반으로 첩광섬유 격자의 분산 값을 제어할 수 있도록 설계되었으며, 제작된 분산 보상기는 단순히 금속 원판의 회전만으로 광섬유 격자에 선형적인 인장력과 수축력을 유도하곤 중심파장의 이동이 없이 분산 값을 변화시킬 수 있었다. 분산 값은 회전각의 변화에 따라 228.04 ㎰/nm∼1430.7 ㎰/nm의 범위에서 분산 값을 제어할 수 있었다. 그리고 중심 파장의 이동은 0.03 nm미만이었다.

Keywords

References

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