Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Analysis of Fiber-grating External-cavity Laser Diode Using Large-signal Time-domain Model

대신호 시영역 모델을 이용한 광섬유 격자 외부 공진 레이저 다이오드의 해석

  • Kim, Jae-Seong (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Chung, Youngchul (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Cho, Ho Sung (ELDIS, Inc.)
  • Received : 2012.10.04
  • Accepted : 2012.10.11
  • Published : 2012.10.25
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Abstract

A large-signal time-domain model is implemented to analyze an FG-LD (Fiber Grating Laser Diode) in which a reflective laser diode is hybrid-integrated with a fiber Bragg grating (FBG). When the length of the externally integrated resonator is 8 mm, in which the effective FBG length of 2.1 mm is included, a static frequency chirp of 0.44 GHz and a dynamic frequency chirp of 6.4 GHz are observed. In addition, it is also observed that the eye of the 10Gbps NRZ signal is well open. The FG-LD is expected to be a cost-effective solution for a 10Gbps-class single wavelength laser covering a span of 50 km range.

본 논문에서는 RLD (Reflective Laser Diode)와 FBG (Fiber Bragg Grating)가 하이브리드 집적된 LD (이하 FG-LD)의 정적 및 동적 특성을 해석하기 위하여 대신호 시영역 모델링 방법을 구현하였다. FBG의 유효길이 2.1 mm를 포함한 외부 집적 공진기의 길이가 8 m인 경우에 0.44GHz의 동적 주파수 요동과 6.4 GHz 정도의 동적 주파수 요동 결과를 나타내었다. 또한 10 Gbps NRZ 신호의 아이가 크게 오픈된 상태를 잘 유지함을 확인하였다. FG-LD는 50 km 정도의 길이를 커버하는 10 Gbps 급 단일파장 레이저로서의 효용성이 있을 것으로 기대된다.

Keywords

Acknowledgement

Supported by : 광운대학교

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