Tunable single-mode injection-locked optoelectronic oscillator with low phase-noise
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- 作者：Yichao Teng ; Yiwang Chen ; Baofu Zhang ; zhangbaofu@163.com" class="auth_mail" title="E-mail the corresponding author ; Jianhua Li ; Lin Lu ; Pin Zhang
- 关键词：Microwave generation ; Optoelectronic oscillator ; Tunable ; Stability ; Phase-noise
- 刊名：Optik - International Journal for Light and Electron Optics
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：127
- 期：10
- 页码：4312-4314
- 全文大小：1008 K
文摘
Tunable single-mode injection-locked optoelectronic oscillator (OEO) with low phase-noise is presented in this article. A master oscillator contributed by amplifier and tunable band-pass filter (TBPF) is embedded in the general single loop OEO. The oscillation frequency is determined by the center frequency of the TBPF. A portion of master oscillation signal is injected into the slave OEO loop, then it is locked by OEO signal after it passes through a long optical delay line with high Q value. With the RF isolator, the master oscillation signal with poor phase-noise is avoided directly mixing in the OEO signal. With the configuration a tunable range from 1.93 to 17.69 GHz with 68 dB suppression of the nearest-neighbor spur is realized. The single-sideband phase noise is below −112 dBc/Hz at an offset of 10 kHz within the whole tunable range. The frequency drift of the OEO system is < ± 2 kHz within 1 h. With low cost and simple system, tunable single-mode RF signal with low phase-noise and high frequency-stability is generated.