An analytic model for an injection-locked dual-loop optoelectronic oscillator (OEO) is proposed and verified by experiments in this paper. Based on this theoretical model, the effect of injection power on the single-sideband phase noise of the OEO is analyzed, and results suggest that moderate injection is one key factor for a balance between phase noise and spur for OEO. In order to measure superlow phase noise of OEOs, a cross-correlation measurement system based on the fiber delay line is built, in which high linear photodetector and low-phase-noise amplifier are used to improve systematic sensitivity. The cross-correlation measurement system is validated by experiments, and its noise floor for the X band is about at 1 kHz and at 10 kHz after a cross correlation of 200 times.
© 2013 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
Jun Hong, An Liu, Xiao-hu Wang, Sheng-xing Yao, and Zu-ling Li
Appl. Opt. 54(27) 8187-8191 (2015)
William Loh, Siva Yegnanarayanan, Jonathan Klamkin, Shannon M. Duff, Jason J. Plant, Frederick J. O’Donnell, and Paul W. Juodawlkis
Opt. Express 20(17) 19589-19598 (2012)
Appl. Opt. 55(28) 7900-7910 (2016)