Acta Photonica Sinica, Volume. 44, Issue 10, 1023003(2015)
Long-term Stability Improvement in an Optoelectronic Oscillator Based on a Feedback Control Loop
A method for the long-term stability improvement of an optoelectronic oscillator was proposed,which is based on a feedback control loop. To achieve the long-term stability,the frequency of optoelectronic oscillator is measured with a field programmable gate array and a frequency dividing circuit. Then the length of optoelectronic oscillator loop is adjusted with a fiber delay line. The accuracy of dividing method to measure the frequency of optoelectronic oscillator is discussed in theory. An experiment based on a single loop structure shows that the phase noise performance does not deteriorate while the long-term stability of optoelectronic oscillator is effectively improved,and the frequency stability of optoelectronic oscillator with feedback control loop is ±0.8 ppm over 7 hours.
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REN Feng-xin, JIN Tao, CHI Hao, TONG Guo-chuan, ZHENG Jun-chao. Long-term Stability Improvement in an Optoelectronic Oscillator Based on a Feedback Control Loop[J]. Acta Photonica Sinica, 2015, 44(10): 1023003
Received: May. 13, 2015
Accepted: --
Published Online: Nov. 30, 2015
The Author Email: Feng-xin REN (3090100961@zju.edu.cn)