Simple homodyne technique for the characterisation of wideband optical detectors

Diaa Abdel-Maguid M. Khalil; Smail Tedjini; Germain H. Chartier

doi:10.1117/12.21962

1 September 1990 Simple homodyne technique for the characterisation of wideband optical detectors

Diaa Abdel-Maguid M. Khalil, Smail Tedjini, Germain H. Chartier

Proceedings Volume 1314, Fibre Optics '90; (1990) https://doi.org/10.1117/12.21962
Event: Fibre Optics '90, 1990, London, United Kingdom

Abstract

In this work we present a simple self-homodyne technique for the characterisation of wideband photodetectors. This technique transforms the frequency modulation of the laser diode into intensity modulation using a 2-beam interferometer. When the laser diode is modulated by a triangular signal, the power is concentrated in one beating frequency component that can be swept by changing the amplitude of the modulating signal. The experimental and theoretical results are in good agreement. As an example, with the frequency of the modulating signal equals only 15 kHz we have measured a detector response of up to 1.5MHz.

Citation Download Citation

Diaa Abdel-Maguid M. Khalil, Smail Tedjini, and Germain H. Chartier "Simple homodyne technique for the characterisation of wideband optical detectors", Proc. SPIE 1314, Fibre Optics '90, (1 September 1990); https://doi.org/10.1117/12.21962

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