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Initial evaluation of commercially available InGaAsP DFB laser diodes for use in high-speed digital fiber optic transceiversNASA has been pursuing the development of high-speed fiber-optic transceivers for use in a number of space data system applications. Current efforts are directed toward a high-performance all-integrated-circuit transceiver operating up to the 3-5 Gb/s range. Details of the evaluation and selection of candidate high-speed optical sources to be used in the space-qualified high-performance transceiver are presented. Data on the performance of commercially available DFB (distributed feedback) lasers are presented, and their performance relative to each other and to their structural design with regard to their use in high-performance fiber-optic transceivers is discussed. The DFB lasers were obtained from seven commercial manufacturers. The data taken on each laser included threshold current, differential quantum efficiency, CW side mode suppression radio, wavelength temperature coefficient, threshold temperature coefficient, natural linewidth, and far field pattern. It was found that laser diodes with buried heterostructures and first-order gratings had, in general, the best CW operating characteristics. The modulated characteristics of the DFB laser diodes are emphasized. Modulated linewidth, modulated side mode suppression ratio, and frequency response are discussed.
Document ID
19910069998
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cook, Anthony L.
(NASA Langley Research Center Hampton, VA, United States)
Hendricks, Herbert D.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Lasers And Masers
Meeting Information
Meeting: IEEE/AIAA/NASA Digital Avionics Systems Conference
Location: Virginia Beach, VA
Country: United States
Start Date: October 15, 1990
End Date: October 18, 1990
Accession Number
91A54621
Distribution Limits
Public
Copyright
Other

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