A high sensitivity detector for underwater communication systems

J. S. Cheong; A. Auckloo; J. S. Ng; A. B. Krysa; J. P. R. David

doi:10.1117/12.2194996

29 October 2015 A high sensitivity detector for underwater communication systems

J. S. Cheong, A. Auckloo, J. S. Ng, A. B. Krysa, J. P. R. David

Proceedings Volume 9647, Unmanned/Unattended Sensors and Sensor Networks XI; and Advanced Free-Space Optical Communication Techniques and Applications; 96470O (2015) https://doi.org/10.1117/12.2194996
Event: SPIE Security + Defence, 2015, Toulouse, France

Abstract

We demonstrate an AlInP detector grown on lattice-matched GaAs substrate for underwater communication applications. This detector has a narrow inherent spectral response of 22 nm with central wavelength at ~ 480 nm and is capable of having avalanche gain of ~ 20 which gives peak responsivity of ~ 2 A/W. A much higher multiplication of ~167 was shown in the previous work. The full-width-half-maximum (FWHM) and responsivity of this detector is fairly insensitive to the angle of the incident light. These properties enable it to detect an optical signal at 480 nm even in the presence of high background illumination.

Citation Download Citation

J. S. Cheong, A. Auckloo, J. S. Ng, A. B. Krysa, and J. P. R. David "A high sensitivity detector for underwater communication systems", Proc. SPIE 9647, Unmanned/Unattended Sensors and Sensor Networks XI; and Advanced Free-Space Optical Communication Techniques and Applications, 96470O (29 October 2015); https://doi.org/10.1117/12.2194996

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