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Bit Error Rate Performance of a Free Space Optical Link Using Double Clad FibersMobile and embedded applications are emerging in the growing field of free space optical links (FSOL). Some mobile applications for FSOL include spacecraft, aircraft, and automotive. These applications by nature require low size weight and power (SWaP) solutions. The main challenge with any FSOL system is the strict pointing requirements. Common solutions to pointing and alignment of FSOL include gimbals, fast steering mirrors, and adaptive optics. All of which provide viable solutions at the cost of increased SWaP. Previously, we presented the use of both large core fibers and double clad fibers (DCF) to interface FSOL transmit and receive optics with small form factor pluggable optical transceivers (SFP). Double clad fibers have been shown to enable a common optical path by transmitting through a single mode core and receiving through a large inner cladding. This enables a single set of symmetric transmit and receive optics, which decreases the SWaP. In addition, using DCF increases the received power stability of the link relative to a multi-mode fiber (MMF) transmitting. To determine the viability of the system, bit error rate performance needs to be investigated. The results of this paper show that at a bit rate of 10 Gbps, double clad fibers offer similar bit error rate performance to single mode fibers when transmitting and multi-mode fibers when receiving enabling a symmetric duplex FSOL reducing SWaP.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Sullivan, Joseph
(University of Oklahoma Norman, OK, United States)
Schoenholz, Bryan
(NASA Glenn Research Center Cleveland, OH, United States)
Tedder, Sarah
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
May 20, 2019
Publication Date
February 2, 2019
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Report/Patent Number
Meeting Information
Meeting: SPIE Photonics West 2019
Location: San Francisco, California
Country: United States
Start Date: February 2, 2019
End Date: February 7, 2019
Sponsors: International Society for Optical Engineering
Funding Number(s)
WBS: 277985.
Distribution Limits
Public Use Permitted.
Technical Review
Single Expert
Double Clad Fiber
Free Space Optical Communications
Small Form-Factor Pluggable Optical Transceiver
Optical Bit Error Rate Testing
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