Precise operation-frequency control of monolithic mode-locked laser diodes for high-speed optical communication and all-optical signal processing

I. Ogura, H. Kurita, T. Sasaki, H. Yokoyama

研究成果: Article査読

49 被引用数 (Scopus)

抄録

We describe a method for pulse-repetition-frequency tuning of mode-locked laser diodes (MLLDs) monolithically integrated with a distributed Bragg reflector (DBR). The pulse-repetition frequency, i.e., the cavity-roundtrip time, is tuned through loss-induced change in the effective length of the DBR. The frequency-tuning range as large as the chip-to-chip frequency deviation caused by cavity-length fabrication variation of 10 μm has been confirmed experimentally, and the MLLDs operate at SDH (synchronous digital hierarchy) frequencies of 9.953, 19.906 and 39.813 GHz. Synchronization with an external system-clock through the hybrid mode-locking operation reduces the timing jitter of the optical pulses to less than 0.3 ps. As an optical pulse source for optical communication, error-free 20-Gbps transmission over 3000 km has been demonstrated, confirming that the MLLD properties satisfy the requirements for use in real systems. The novel application of MLLDs to all-optical clock extraction, one of the ess ential functions required in all-optical signal processing, has been demonstrated at the 40-GHz SDH frequency.

本文言語English
ページ(範囲)709-725
ページ数17
ジャーナルOptical and Quantum Electronics
33
7-10
DOI
出版ステータスPublished - 2001 7月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 電子工学および電気工学

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