Experimental and theoretical study of TDM based FWM mitigation in 8 channel 50W high power WDM PPM Tx

Doruk Engin; Jacob Hwang; Patrick Olmstead; David Pachowicz; Ted Wysocki; Mark Storm

doi:10.1117/12.2608752

4 March 2022 Experimental and theoretical study of TDM based FWM mitigation in 8 channel 50W high power WDM PPM Tx

Doruk Engin, Jacob Hwang, Patrick Olmstead, David Pachowicz, Ted Wysocki, Mark Storm

Proceedings Volume 11993, Free-Space Laser Communications XXXIV; 119930C (2022) https://doi.org/10.1117/12.2608752
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

Fibertek is developing a power efficient, space qualifiable Eight WDM Channel PPM Downlink Tx Seed LAser Module (SAM) with Time Division Multiplexing (TDM) based FWM Mitigation Capability. SAM will be compatible with space qualifiable, high TRL, 8 WDM channel, 50W WDM Amplifier prototype that was delivered in early 2021. SAM together with the WDM Amplifier will meet all the requirements of a spaceflight Deep Space Optical Communication (DSOC) WDM Transmitter (Tx) that can support link distances of 2AU and date rates of 2Gbit/sec. TDM based FWM mitigation is experimentally demonstrated using the high TRL WDM Amplifier at 40W operation with PPM(128+32) format. Fibertek has developed a comprehensive multi gain stage 1.5um WDM fiber amplifier numerical model that accurately quantifies the degradation of WDM PPM signals due to FWM. Comparisons of the simulation to the High power WDM PPM experiments are presented. Using the model system level requirements for the WDM PPM SAM are studied.

Conference Presentation

Citation Download Citation

Doruk Engin, Jacob Hwang, Patrick Olmstead, David Pachowicz, Ted Wysocki, and Mark Storm "Experimental and theoretical study of TDM based FWM mitigation in 8 channel 50W high power WDM PPM Tx", Proc. SPIE 11993, Free-Space Laser Communications XXXIV, 119930C (4 March 2022); https://doi.org/10.1117/12.2608752

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