High gain, low noise InGaAs APD receiver with fast overload recovery and stable performance through wide temperature range

Patrick Lepage; Jean-François Rioux; Paul Verville; Edith Talbot; Nicolas Bélanger; Bernicy Fong

doi:10.1117/12.2603212

14 March 2022 High gain, low noise InGaAs APD receiver with fast overload recovery and stable performance through wide temperature range

Patrick Lepage, Jean-François Rioux, Paul Verville, Edith Talbot, Nicolas Bélanger, Bernicy Fong

Author Affiliations +

Proceedings Volume 12008, Photonic Instrumentation Engineering IX; 120080L (2022) https://doi.org/10.1117/12.2603212
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Optical LIDARs and laser range finders (LRF) require high sensitivity near 1nW while also having fast recovery to overloads as high as 100W peak optical power. Fast overload recovery is required in order to detect subsequent signals after sensing bright targets. In the current work, CMC have created a new family of InGaAs APD LIDAR/LRF receivers, 264-339822-VAR [6] , having a higher dynamic range than most commercially available receivers. While maintaining the existing family of receivers’ bandwidth and APD gain, a 1.8 x increase in responsivity can now be achieved, while reducing the NEP by 12%. In addition, new improvement to the receiver include reducing overload recovery time to 331ns from a laser pulse of 6W peak optical power allowing close secondary target detection, and achieving NEP as low as 184fW/√Hz at +85°C.

Conference Presentation

Citation Download Citation

Patrick Lepage, Jean-François Rioux, Paul Verville, Edith Talbot, Nicolas Bélanger, and Bernicy Fong "High gain, low noise InGaAs APD receiver with fast overload recovery and stable performance through wide temperature range", Proc. SPIE 12008, Photonic Instrumentation Engineering IX, 120080L (14 March 2022); https://doi.org/10.1117/12.2603212

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