Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Wide Tuning and Modulation Characteristics Analysis of Coupled-Ring Reflector Laser Diode

결합 링 반사기 레이저 다이오드의 광대역 파장 가변 및 변조 특성 해석

  • Yoon, Pil-Hwan (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Kim, Su-Hyun (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Chung, Young-Chul (Department of Electronics and Communications Engineering, Kwangwoon University)
  • 윤필환 (광운대학교 전자통신공학과) ;
  • 김수현 (광운대학교 전자통신공학과) ;
  • 정영철 (광운대학교 전자통신공학과)
  • Published : 2006.12.25

Abstract

A time-domain modeling approach is used to study characteristics of a widely tunable coupled-ring reflector (CRR) laser diode(LD). The CRR consists of a bus waveguide and two coupled ring resonators coupled to the bus without resorting to distributed Bragg grating structure. The tuning range can be a few tens of nanometers with a side mode suppression ratio exceeding 35dB through the adjustment of currents into the phase control sections in the rings. The CRR laser diode has long effective cavity length compared to conventional laser diodes. Accordingly, a broad additional resonance peak in the amplitude modulation characteristics is observed between 20 to 30 GHz, implying the extension of amplitude modulation bandwidth.

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