Comparison of calculated phase-sensitive recoverable signals using a Fabry–Perot cavity in reflection and transmission

This work is concerned with the analysis of the signals which can be recovered in a phase-sensitive detector after either transmission through or reflection from a Fabry–Perot interferometer of a phase-modulated light. The frequency responses are obtained and compared, the effects of amplitude modulation which result in offsets and line shape distortions are analyzed, the conditions to reduce the in-loop frequency noise are examined taking into account the electronic noise, when the source is locked to the cavity by means of a high gain control system.