3 September 2008 Improved multiplexed infrared single photon detectors
Author Affiliations +
Proceedings Volume 7082, Infrared Spaceborne Remote Sensing and Instrumentation XVI; 70820S (2008); doi: 10.1117/12.797376
Event: Optical Engineering + Applications, 2008, San Diego, California, United States
Abstract
We discuss a scheme for a photon-counting detection system that overcomes the difficulties of photon-counting at high rates at telecom wavelengths. Our method uses an array of N detectors and a 1-by-N optical switch with a control circuit to direct input light to live detectors. We conclude that in addition to detection deadtime reduction, the multiplexed switch also reduces so-called trigger deadtime, common to infrared photon counting detectors. By implementing the new algorithm we obtain an overall deadtime reduction of a factor of 5 when using just N=2 multiplexed detectors. In addition to deadtime reduction, our scheme reduces afterpulsing and background counts (such as dark counts). We present experimental results showing the advantage of our system as compared to passive multi-detector detection systems and our previous active multiplexing system that only reduced detection deadtime.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. V. Polyakov, V. Schettini, I. P. Degiovanni, F. Piacentini, G. Brida, A. Migdall, "Improved multiplexed infrared single photon detectors", Proc. SPIE 7082, Infrared Spaceborne Remote Sensing and Instrumentation XVI, 70820S (3 September 2008); doi: 10.1117/12.797376; https://doi.org/10.1117/12.797376
PROCEEDINGS
7 PAGES


SHARE
KEYWORDS
Sensors

Multiplexing

Photodetectors

Switches

Electronics

Infrared detectors

Infrared radiation

Back to Top