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Optical Engineering

Reducing the noise floor in optoelectronic oscillator by optimizing the operation of modulator
Author(s): Guochuan Tong; Tao Jin; Hao Chi; Junchao Zheng; Xiang Zhu; Tianhao Lai; Xidong Wu; Zhiguo Shi
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Paper 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.

Paper Details

Date Published: 28 October 2016
PDF: 4 pages
Opt. Eng. 55(10) 100504 doi: 10.1117/1.OE.55.10.100504
Published in: Optical Engineering Volume 55, Issue 10
Show Author Affiliations
Guochuan Tong, Zhejiang Univ. (China)
Tao Jin, Zhejiang Univ. (China)
Hao Chi, Zhejiang Univ. (China)
Junchao Zheng, Zhejiang Univ. (China)
Xiang Zhu, Zhejiang Univ. (China)
Tianhao Lai, Zhejiang Univ. (China)
Xidong Wu, Zhejiang Univ. (China)
Zhiguo Shi, Zhejiang Univ. (China)

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