16 channel GHz low noise SWIR photoreceivers

Xiaogang Bai; Ping Yuan; Paul McDonald; Joseph Boisvert; James Chang; Robyn Woo; Eduaro Labios; Rengarajan Sudharsanan; Michael Krainak; Guangning Yang; Xiaoli Sun; Wei Lu; Dion McIntosh; Qiugui Zhou; Joe Campbell

doi:10.1117/12.919434

31 May 2012 16 channel GHz low noise SWIR photoreceivers

Xiaogang Bai, Ping Yuan, Paul McDonald, Joseph Boisvert, James Chang, Robyn Woo, Eduaro Labios, Rengarajan Sudharsanan, Michael Krainak, Guangning Yang, Xiaoli Sun, Wei Lu, Dion McIntosh, Qiugui Zhou, Joe Campbell

Author Affiliations +

Proceedings Volume 8353, Infrared Technology and Applications XXXVIII; 83532E (2012) https://doi.org/10.1117/12.919434
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

Future NASA light detection and ranging (LIDAR) mapping systems require multi-channel receivers with high sensitivity and bandwidth operating at 1-1.5 μm wavelengths. One of the ways to improve the system performance is to improve the sensitivity of photoreceiver. InGaAs avalanche photodiode (APD) sensor technology is considered for this wavelength region because of high reliability. However, commercially available InGaAs APDs have low sensitivity due to the high excess-noise of InP material. Spectrolab has been developing low excess noise InGaAs avalanche photodiodes (APDs) with impact ionization engineering (I²E) structures and recently, APDs with excess noise factor of 0.15 have been demonstrated using an I²E design. Single channel photoreceivers built using low noise I²E APDs show a noise equivalent power (NEP) of 150 fW/rt(Hz) over a bandwidth of 1 GHz, a record for InGaAs based APDs. A 16 channel GHz SWIR photoreceiver was designed and built at Spectrolab. The photoreceiver was designed to work with a custom fiber bundle which couples the light from telescope to detectors. The photoreceiver shows a system level NEP less than 300 fW/rt(Hz) with 1 GHz bandwidth.

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Xiaogang Bai, Ping Yuan, Paul McDonald, Joseph Boisvert, James Chang, Robyn Woo, Eduaro Labios, Rengarajan Sudharsanan, Michael Krainak, Guangning Yang, Xiaoli Sun, Wei Lu, Dion McIntosh, Qiugui Zhou, and Joe Campbell "16 channel GHz low noise SWIR photoreceivers", Proc. SPIE 8353, Infrared Technology and Applications XXXVIII, 83532E (31 May 2012); https://doi.org/10.1117/12.919434

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