Chinese Optics Letters, 2018, 16 (1): 010604, Published Online: Jul. 16, 2018
Polarization-maintained coupled optoelectronic oscillator incorporating an unpumped erbium-doped fiber Download: 797次
Abstract
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.
Tianhua Du, Dan Zhu, Shilong Pan. Polarization-maintained coupled optoelectronic oscillator incorporating an unpumped erbium-doped fiber[J]. Chinese Optics Letters, 2018, 16(1): 010604.