| 滕义超,张宝富,吴传信,庞中晓.精细调谐电增益环腔光电振荡器[J].光电子激光,2014,(11):2074~2078 |
| 精细调谐电增益环腔光电振荡器 |
| Precise tunable optoelectronic oscillator based on electrical gain ring resonator cavity |
| 投稿时间：2014-07-14 |
| DOI： |
| 中文关键词: 光电振荡器(OEO) 电增益环腔(EGRR) 可调谐 模式选择 |
| 英文关键词:optoelectronic oscillator (OEO) electrical gain ring resonator (EGRR) tunable mode selection |
| 基金项目:国家自然科学基金(61371121)资助项目 (解放军理工大学通信工程学院,江苏 南京 210007) |
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| 中文摘要: |
| 为了有效实现光电振荡器(OEO)输出频率精细调谐 ,提出了一种基于电增益环腔(EGRR)的OEO。利用放大器、 滤波器和移相器构成可调谐EGRR,通过改变EGRR内信号的相位等效实现 环腔长度的改变,得到不同 频率的射频(RF)信号,RF信号与OEO产生的自由振荡信号电注入锁定,输出信号 的频率由锁定EGRR输出频 率的OEO模式决定,相位噪声由OEO决定。在简单结构实验的条件下,有 效实现了OEO输出频率精细调谐。实验结果表明,当光纤长为2km、EGRR长为0.5m时,得到 了频率为11.3GHz、边模抑制比(SMSR)为 48dB、可调谐范围为239MHz、调谐最小步长 为100kHz和相位噪声为－99dBc/Hz@10kHz的RF信号。 |
| 英文摘要: |
| A kind of electrical gain ring resonator (EGRR) optoelectronic oscilla tor (OEO) is demonstrated,whose frequency can be precisely tuned by a little cha nge.The electrical gain ring resonator is composed of electrical amplifier,filter and electrical p hase shifter which generates tunable output RF signal by equally controlling the length of ring resonator.The injection locked scheme injects the single loop OEO signal into the electrical gain ring resonator cavity.The frequency of electrical gain ring resonator is pulled by the injected signal,the frequency of the output signal is controlled by the OEO mode which locks electr ical gain ring resonator frequency,and the phase noise is determined by the OEO loop.The setup of this experiment is simple and it realize precise tunable output signal.In the experiment,the length of fiber is 2km and the length of electrica l loop is 0.5m.The structure achieves 11.3GHz fundamental oscillation with 48dB side mode suppression ratio (SMSR ),the tunable range is 239MHz,the tunable step is 100kHz,and the phase noise of the signal is －99dBc/Hz at 10kHz. |
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