Polarization-maintained coupled optoelectronic oscillator incorporating an unpumped erbium-doped fiber

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2018,（1）
• 页码范围: 21-24
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201816.010604

摘要

A polarization-maintained coupled optoelectronic oscillator (COEO) with its performance significantly improved by a short-length unpumped erbium-doped fiber (EDF) is reported and experimentally investigated.A 10 GHz optical pulse train with a supermode suppression ratio of 61.8 dB and a 10 GHz radio frequency signal with a sidemode suppression ratio of 94 dB and a phase noise of-121.9 dBc/Hz at 10 kHz offset are simultaneously generated.Thanks to saturable absorption of the 1 m unpumped EDF,which introduces relatively large cavity loss to the undesired modes and noise,the supermode suppression ratio and the phase noise are improved by 9.4 and 7.9 dB,respectively.