Dividing optical power for maximum signal-to-noise ratio in a self-mixing FMCW system

Daniel Nordin; Kalevi Hyyppae

doi:10.1117/12.413838

31 January 2001 Dividing optical power for maximum signal-to-noise ratio in a self-mixing FMCW system

Daniel Nordin, Kalevi Hyyppae

Proceedings Volume 4167, Atmospheric Propagation, Adaptive Systems, and Laser Radar Technology for Remote Sensing; (2001) https://doi.org/10.1117/12.413838
Event: Europto Remote Sensing, 2000, Barcelona, Spain

Abstract

An examination on how to divide the optical power between the local oscillator radiation and radiation sent towards the target for maximized signal-to-noise ratio, has been carried out. From the self-mixing equations, by substituting electrical fields with optical power and including relevant noise sources, an expression for the signal-to-noise ratio (SNR) for the photodiode has been obtained. From this equation the conditions for maximum SNR has been derived.

Citation Download Citation

Daniel Nordin and Kalevi Hyyppae "Dividing optical power for maximum signal-to-noise ratio in a self-mixing FMCW system", Proc. SPIE 4167, Atmospheric Propagation, Adaptive Systems, and Laser Radar Technology for Remote Sensing, (31 January 2001); https://doi.org/10.1117/12.413838

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