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Bit Error Rate Performance on Passive Alignment in Free Space Optical Links Using Large Core FibersA 20-meter free-space optical link (FSOL) is proposed for data transmission between external ISS payload sites and the main cabin at a target rate of 10 Gbps (gigabits per second). Motion between a payload site and the main cabin is predicted to cause up to 5 cm in lateral misalignment and 0.2 degrees of angular misalignment. Due to the harsh environment of space it is advantageous to locate the optical transceivers inside the spacecraft or in a controlled environment. With the optical components and transceivers in separate locations, a fiber optic cable will be required to carry light between the two. In our past work we found that the use of large-core fibers provide an increased misalignment tolerance for such systems and could eliminate the need for active control of the optics. In that work, it was shown that a 105 m core diameter fiber optic cable offered a viable low SWaP (size, weight, and power) solution for the ISS application; however, the effects of modal dispersion were not investigated. This paper will present bit error rate performance of the FSOL using these large-core fibers.
Document ID
Document Type
Conference Paper
Schoenholz, Bryan
(NASA Glenn Research Center Cleveland, OH, United States)
Tedder, Sarah
(NASA Glenn Research Center Cleveland, OH, United States)
Millican, Patrick
(Notre Dame Univ. Notre Dame, IN, United States)
Berkson, Joel
(Arizona Univ. Tucson, AZ, United States)
Date Acquired
August 23, 2018
Publication Date
January 27, 2018
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Report/Patent Number
Meeting Information
SPIE Photonics West(San Francisco, CA)
Funding Number(s)
WBS: WBS 405034.
Distribution Limits
Public Use Permitted.
Optical Bit Error Rate Testing
Modal Dispersion in Large Core Fibers
Free Space Optical Link
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