50W, 1.5um, 8 WDM (25nm) channels PPM downlink Tx for deep space lasercom

Doruk Engin; Slava Litvinovitch; David Pachowics; Jacob Hwang; Chad Gilman; He Cao; Keith G. Petrillo; Mark Storm; Malcolm W. Wright

doi:10.1117/12.2543905

2 March 2020 50W, 1.5μm, 8 WDM (25nm) channels PPM downlink Tx for deep space lasercom

Doruk Engin, Slava Litvinovitch, David Pachowics, Jacob Hwang, Chad Gilman, He Cao, Keith G. Petrillo, Mark Storm, Malcolm W. Wright

Author Affiliations +

Proceedings Volume 11272, Free-Space Laser Communications XXXII; 112720V (2020) https://doi.org/10.1117/12.2543905
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

51W average power, 7 Channel WDM Fiber Laser Transmitter with 25nm flat gain has been demonstrated for optical space communication applications. Power Amplifier supports >10kW/channel SBS limited peak power and achieves o-o efficiency 44%. Pulse energy variation (PEV) due to gain dynamics and four wave mixing of the PPM tx output is characterized. Significant improvement in PEV with wavelength dependent pre-pulse shaping is demonstrated. A high reliability 50W 8 WDM channel amplifier design is described. The amplifier will be housed in a high TRL small SWAP space laser package with dimensions 10.6x13.8x 5.3” and weighs 28.7 lbs

Citation Download Citation

Doruk Engin, Slava Litvinovitch, David Pachowics, Jacob Hwang, Chad Gilman, He Cao, Keith G. Petrillo, Mark Storm, and Malcolm W. Wright "50W, 1.5μm, 8 WDM (25nm) channels PPM downlink Tx for deep space lasercom", Proc. SPIE 11272, Free-Space Laser Communications XXXII, 112720V (2 March 2020); https://doi.org/10.1117/12.2543905

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