Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Optical Clock Recovery from RZ and NRZ data using a Multi-Section Laser Diode with a DFB Reflector

DFB 반사기가 집적된 다중전극 레이저 다이오드를 이용한 RZ 및 NRZ 데이터 신호의 광클럭 재생

  • Jeon, Min-Yong (Department of Physics, Chungnam Notional University) ;
  • Leem, Young-Ahn (Optical Devices Research Department, Electronics and Telecommunications Research Institute) ;
  • Kim, Dong-Churl (Optical Devices Research Department, Electronics and Telecommunications Research Institute) ;
  • Sim, Eun-Deok (Optical Devices Research Department, Electronics and Telecommunications Research Institute) ;
  • Kim, Sung-Bock (Optical Devices Research Department, Electronics and Telecommunications Research Institute) ;
  • Park, Kyung-Hyun (Optical Devices Research Department, Electronics and Telecommunications Research Institute) ;
  • Yee, Dae-Su (Division of Optical Metrology, Korea Research Institute of Standards and Science)
  • 전민용 (충남대학교 물리천문우주과학부 양자제어물성연구소) ;
  • 임영안 (한국전자통신연구원 IT 융합 부품 연구소 광소자연구부 차세대 광전소자팀) ;
  • 김동철 (한국전자통신연구원 IT 융합 부품 연구소 광소자연구부 차세대 광전소자팀) ;
  • 심은덕 (한국전자통신연구원 IT 융합 부품 연구소 광소자연구부 차세대 광전소자팀) ;
  • 김성복 (한국전자통신연구원 IT 융합 부품 연구소 광소자연구부 차세대 광전소자팀) ;
  • 박경현 (한국전자통신연구원 IT 융합 부품 연구소 광소자연구부 차세대 광전소자팀) ;
  • 이대수 (한국표준과학연구원)
  • Published : 2006.02.01
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Abstract

We have extracted an optical clock signal from a return-to-zero(RZ) pseudorandom bit sequence(PRBS) and non-return-to-zero(NRZ) PRBS data in a pulsation multi-section laser diode with DFB reflector. The ms timing jitter achieved less than 1 ps for the input 11.727 Gbit/s RZ PRBS and NRZ PRBS data. The PRE data wasconverted from the NRZ data using an NRZ to pseudo-return to zero(PRZ) converter module. The optical clock was extracted from the PRZ data which contains the clock components. Although the input PRZ data gives a timing jitter of 2 ps, the extracted clock has timing jitter of ${\~}$1 ps.

DFB 반사기가 집적된 다중전극 레이저 다이오드에 Return-to-zero (RZ) pseudorandom bit sequence (PRBS) 데이터와 nonreturn-to-zero (NRZ) PRBS 데이터를 주입하여 이 신호로부터 광 클럭 신호를 추출하였다. 11.727 Gbit/s RZ PRBS 데이터와 NRZ PRBS 데이터로부터 재생된 광 클럭의 root-mean-square (rms) 타이밍 지터 (timing jitter)는 약 1 ps 정도로써 아주 우수한 결과를 얻어냈다. NRZ PRBS 데이터로부터 pseudo return-to-zero (PRZ) 데이터로 포맷변환을 구현하고, 클럭 성분을 갖고 있는 PRZ 신호를 이용하여 광 클럭을 추출하였다. 입력 PRZ데이터 신호의 rms 타이밍 지터는 2ps 이상일지라도 이로부터 추출해 낸 광 클럭의 rms 타이밍 지터는 1ps 정도의 좋은 특성을 얻어냈다.

Keywords

References

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