Optical modem enabling broadband datacom links for crewed Cis-Lunar missions
We report on the high-power broadband optical modem supporting NASA’s crewed Artemis-2 mission. The O2O modem will be mounted in the crewed Orion module and provide a broadband bi-directional 505,000 km optical link back to earth while en route to the moon. The full-duplex modem consists of an optical transmitter and receiver optimized for pulse-position modulation. The transmitter outputs up to 1 W and supports bitrates up to 260.95 Mb/s. The optical receiver supports bitrates up to 20.39 Mb/s. The modem has passed environmental testing and has been declared at TRL 6.
James M. Dailey
CACI International Inc. (United States)
Dr. James M. Dailey has been working in the field of optical communications for more than 20 years. He received his BS, MS, and PhD degrees in electrical engineering from Lehigh University in 2001, 2006, and 2009, respectively. After working several years in the area of nonlinear optical signal processing in fiber-based systems, Dr. Dailey joined LGS Innovations in 2016 (now CACI) and is currently a Senior Optical Systems Engineer. In his current position at CACI, he has worked on the design, development, and testing for several airborne and space-flight programs supporting lasercom and LIDAR missions. These include the DSOC high-power laser transmitter and the ILLUMA-T and O2O high-speed optical modems.