Reducing the noise floor in optoelectronic oscillator by optimizing the operation of modulator

Guochuan Tong; Tao Jin; Hao Chi; Junchao Zheng; Xiang Zhu; Tianhao Lai; Xidong Wu; Zhiguo Shi

doi:10.1117/1.OE.55.10.100504

28 October 2016 Reducing the noise floor in optoelectronic oscillator by optimizing the operation of modulator

Guochuan Tong, Tao Jin, Hao Chi, Junchao Zheng, Xiang Zhu, Tianhao Lai, Xidong Wu, Zhiguo Shi

Author Affiliations +

Optical Engineering, Vol. 55, Issue 10, 100504 (October 2016). https://doi.org/10.1117/1.OE.55.10.100504

Abstract

An intensity modulator is a key component in an optoelectronic oscillator (OEO). It is necessary to investigate the effects of some of the operating parameters of the modulator on OEO phase noise. Since the OEO optimized oscillation power is related to the nonlinear effect of the modulator, an extended analysis is made by considering both the saturation effects of the modulator and the radio frequency amplifier. Experimental results show that a 5-dB improvement of phase noise performance is achieved. In addition, a theoretical and experimental study on the DC bias-drifting problem of the modulator and its induced phase noise fluctuations is proposed. It is found that the saturated operation of the amplifier is helpful in reducing the fluctuation range. The presented results can be used to guide the design of high-quality OEOs.

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Guochuan Tong, Tao Jin, Hao Chi, Junchao Zheng, Xiang Zhu, Tianhao Lai, Xidong Wu, and Zhiguo Shi "Reducing the noise floor in optoelectronic oscillator by optimizing the operation of modulator," Optical Engineering 55(10), 100504 (28 October 2016). https://doi.org/10.1117/1.OE.55.10.100504

Published: 28 October 2016

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