Abstract
Optoelectronic oscillators (OEOs) are used to generate low phase noise microwave signals. A high performance OEO may act as a local oscillator that could lock the output of the absolute reference frequency, provided by the atomic transition. This study investigates the relationship between the phase shifts of a reference injection locked OEO and its fiber delay fluctuation. The impact of fiber delay fluctuation and the method to realize a good injection-locked OEO are discussed. © 2012 IEEE.