Coherent Differential Demodulation (CDD) For Time-Integrating Optical Correlators

Ted David

doi:10.1117/12.964346

24 September 1986 Coherent Differential Demodulation (CDD) For Time-Integrating Optical Correlators

Ted David

Proceedings Volume 0639, Optical Information Processing II; (1986) https://doi.org/10.1117/12.964346
Event: 1986 Technical Symposium Southeast, 1986, Orlando, United States

Abstract

Coherent time-integrating optical correlators retain phase information. Due to slowly shifting laser phase and mechanical vibration, long-term phase reliability is not easily achieved. Coherent differential phase-shift keying can overcome these problems. An implementation of coherent differential demodulation suitable for use with optical correlators is described. The stochastic nature of the output of the CDD processor is investigated. Experimental results are summarized, and compared with a simulation of the CDD processor to validate the theoretical processor model.

Citation Download Citation

Ted David "Coherent Differential Demodulation (CDD) For Time-Integrating Optical Correlators", Proc. SPIE 0639, Optical Information Processing II, (24 September 1986); https://doi.org/10.1117/12.964346

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