Eye-safety optimized launch for parallel fiber optic data links

A non-traditional laser transmitter launch methodology has been developed which optimizes the available launch power of the cable plant fiber per eye safety criteria instead of optimizing for coupling efficiency. Twelve-channel, 850 nm VCSELs are launched into parallel ribbon multimode optical fiber...

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Published in1999 Proceedings. 49th Electronic Components and Technology Conference (Cat. No.99CH36299) pp. 1122 - 1126
Main Authors Donhowe, M.N., Garber, P.L., Theorin, C.R., Casarino, D.A.
Format Conference Proceeding Journal Article
LanguageEnglish
Published IEEE 1999
Subjects
Costs
Eye protection
Laser modes
Laws and legislation
Measurement standards
Multimode fibers
Optical design
Optical fiber cables
Optical fibers
Optical transmitters
Optimization
Power generation
Power lasers
Radio transmitters
Safety
Semiconductor lasers
Transmitters
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Summary:A non-traditional laser transmitter launch methodology has been developed which optimizes the available launch power of the cable plant fiber per eye safety criteria instead of optimizing for coupling efficiency. Twelve-channel, 850 nm VCSELs are launched into parallel ribbon multimode optical fiber at a 13/spl deg/ angle which disproportionately weights the optical power in the higher order (angle) modes of the optical fiber. The impact of this mode profile change allows higher transmitted powers and relieves the transmitter optical budget for a given class of eye safety by as much as 3 dB.
Bibliography:ObjectType-Article-2
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ISBN:0780352319
9780780352315
ISSN:0569-5503
2377-5726
DOI:10.1109/ECTC.1999.776330