Noise Investigation of a Large Free Spectral Range High-Resolution Microwave Photonic Signal Processor

IEEE Photonics Journal

Erwin H. W. Chan¹ 

[1] School of Electrical and Information Engineering, Institute of Photonics and Optical Science, The University of Sydney, Sydney, Australia;

关键词: Fiber optics systems;    electrooptical systems;    coherent effects;   

DOI  :  10.1109/JPHOT.2013.2289959

来源: DOAJ

【 摘 要 】

The noise components in a new microwave photonic signal processor that has the ability of simultaneously realizing a large free spectral range (FSR) and high-resolution bandpass filter response are investigated. The filter is implemented using the Vernier effect and the frequency-shifting technique in an optical delay line structure. The power spectrum of the signal-spontaneous beat noise, which is the dominant noise source in the system, is theoretically analyzed and experimentally measured. Experimental results are presented, which show that the new large FSR microwave photonic signal processor has a low-noise performance and demonstrate 31-fold increase in the FSR of a bandpass filter response while having a sharp passband and 30-dB stopband rejection level.

【 授权许可】

Unknown