Space qualification of 5 to 8 GHz bandwidth, uncooled, extended InGaAs 2.2-micron wavelength, linear optical receivers

Abhay M. Joshi; Shubhashish Datta; Nilesh Soni; Matthew D'Angiolillo; Jeff Mertz; Michael Sivertz; Adam Rusek; James Jardine; Sachi Babu; Peter Shu

doi:10.1117/12.2529437

9 September 2019 Space qualification of 5 to 8 GHz bandwidth, uncooled, extended InGaAs 2.2-micron wavelength, linear optical receivers

Abhay M. Joshi, Shubhashish Datta, Nilesh Soni, Matthew D'Angiolillo, Jeff Mertz, Michael Sivertz, Adam Rusek, James Jardine, Sachi Babu, Peter Shu

Author Affiliations +

Proceedings Volume 11129, Infrared Sensors, Devices, and Applications IX; 111290L (2019) https://doi.org/10.1117/12.2529437
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

We have successfully tested 5 to 8 GHz bandwidth, uncooled, Extended InGaAs 2.2 μm wavelength, linear optical receivers, coupled with single mode fibers for 30 MeV Protons, Gamma rays, 1 GeV/n Iron ions, and 1 GeV/n Helium ions. These devices find multiple applications in outer-space for coherent rapid Doppler shift LIDAR, long wavelength gravitational wave sensing, as well as inter-planetary and Earth-to-Moon coherent communication links. Nine devices comprising of Extended InGaAs 2.2 μm PIN photodiode (PD) and GaAs transimpedance amplifiers (TIA), coupled with single mode fibers, were tested with 30 MeV protons, three each with fluence levels of 4.9 × 10¹⁰ cm^-2 , 9.8 × 10¹⁰ cm^-2, and 1.6 × 10¹¹ cm^-2 . Three more devices were tested using 1.4 ♦ 10⁸Helium ions/cm² at 1 GeV/n over a six minute exposure for a dose of 20 rad (water). Three additional devices were exposed to 1 GeV/n Fe fluence of 2.8 × 10⁵ ions/cm² for half a minute delivering a dose of 6 rad (water). Another three Extended InGaAs PD and GaAs TIA fibered devices were tested using Cesium-137 gamma rays of 662 keV for 15 krad (water). Pre- and post-radiation results were measured for (1) dark current vs. voltage for the InGaAs photodiodes, (2) responsivity (quantum efficiency) for the photodiodes, (3) optical return loss for the photodiodes, (4) TIA drive current, (5) bandwidth of the PIN + TIA, (6) conversion gain of the PIN-TIA, and (7) Bit Error Ratio (BER) of the PIN-TIA for 10.709 Gbps NRZ-ASK signal. All devices were found to be fully functional at normal operating conditions and at room temperature. All these efforts will advance the Technology Readiness Level (TRL) of these devices by year 2020.

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Abhay M. Joshi, Shubhashish Datta, Nilesh Soni, Matthew D'Angiolillo, Jeff Mertz, Michael Sivertz, Adam Rusek, James Jardine, Sachi Babu, and Peter Shu "Space qualification of 5 to 8 GHz bandwidth, uncooled, extended InGaAs 2.2-micron wavelength, linear optical receivers", Proc. SPIE 11129, Infrared Sensors, Devices, and Applications IX, 111290L (9 September 2019); https://doi.org/10.1117/12.2529437

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KEYWORDS

Indium gallium arsenide

Ions

Gamma radiation

Photodiodes

Iron

Helium

Space operations

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