FWM-PEV statistics measurements in 8 channel 50W high-power WDM PPM Tx with and without TDM-based FWM mitigation

Doruk Engin; Jacob Hwang; Xung Dang; Patrick Olmstead; Ted Wysocki; Mark Storm

doi:10.1117/12.3001478

12 March 2024 FWM-PEV statistics measurements in 8 channel 50W high-power WDM PPM Tx with and without TDM-based FWM mitigation

Doruk Engin, Jacob Hwang, Xung Dang, Patrick Olmstead, Ted Wysocki, Mark Storm

Author Affiliations +

Proceedings Volume 12877, Free-Space Laser Communications XXXVI; 128770L (2024) https://doi.org/10.1117/12.3001478
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Fibertek is developing a power efficient, space qualifiable Eight WDM Channel PPM Downlink Seed Laser Module (SAM) with TDM based FWM Mitigation Capability. SAM will be compatible with the space qualifiable, high TRL, 8 WDM channel, 50W WDM Amplifier prototype that was delivered in early 2021. Together the two modules make up a complete High TRL spaceflight high power DSOC WDM Transmitter. Measurements of FWM-PEV statistics using realistic PPM patterns are presented. Measurements show that FWM mitigation is not needed for PPM orders 16 and 32. TDM based FWM mitigation algorithm using two wavelength subslots is implemented on the realistic PPM patterns for five out of the six PPM64 and PPM128 formats successfully. Mitigation in all cases results in significant improvement in PEV statistics. Achieved statistics for all PPM formats are considered manageable using FEC.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Doruk Engin, Jacob Hwang, Xung Dang, Patrick Olmstead, Ted Wysocki, and Mark Storm "FWM-PEV statistics measurements in 8 channel 50W high-power WDM PPM Tx with and without TDM-based FWM mitigation", Proc. SPIE 12877, Free-Space Laser Communications XXXVI, 128770L (12 March 2024); https://doi.org/10.1117/12.3001478

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