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Amplified feedback DFB laser for 40 Gb/s all-optical clock recovery

Authors:	Cheng Chen Yu Sun Jiaoqing Pan Song Liang Caiyun Lou

Institution:	^a Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Science, P.O. Box 912, Beijing 100083, China ^b Tsinghua National Laboratory for Information and Science Technology and State Key Laboratory of Integrated Optoelectronics, Department of Electronics Engineering, Tsinghua University, Beijing 100084, China

Abstract:	A monolithic integrated amplified feedback semiconductor laser (AFL) was fabricated based on quantum well intermixing (QWI) technique. The AFL works as a self-pulsation laser. It consists of a gain-coupled multiple quantum well distribute feedback (DFB) laser diode (LD) section, a passive phase section and an amplified feedback section. The free-running repetition frequency of the AFL can be tuned from 32 GHz to 51 GHz via controlling the feedback strength. All-optical 40 Gb/s clock recovery was experimentally demonstrated using the AFL with a low timing jitter.

Keywords:	Clock recovery Amplified feedback laser Self-pulsation Quantum well intermixing
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