IEEE PHOTONICS TECHNOLOGY LETTERS, vol.23, no.4, pp.263-265, 2011 (SCI-Expanded)
A novel method of measuring the optical frequency stability of a continuous-wave (CW) laser by using an etalon-based optoelectronic oscillator is demonstrated. A 1000 finesse Fabry-Perot etalon is used as a reference which eliminates the need of using an independent optical source as a frequency reference. Using this technique, the optical frequency stability of a CW laser is measured with similar to 3.5-kHz optical frequency resolution at update rates of 90 Hz.