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Holograms for laser diode: Single mode optical fiber couplingThe low coupling efficiency of semiconductor laser emissions into a single mode optical fibers place a severe restriction on their use. Associated with these conventional optical coupling techniques are stringent alignment sensitivities. Using holographic elements, the coupling efficiency may be increased and the alignment sensitivity greatly reduced. Both conventional and computer methods used in the generation of the holographic couplers are described and diagrammed. The reconstruction geometries used are shown to be somewhat restrictive but substantially less rigid than their conventional optical counterparts. Single and double hologram techniques are examined concerning their respective ease of fabrication and relative merits.
Document ID
19830010802
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Fuhr, P. L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 4, 2013
Publication Date
April 1, 1982
Subject Category
Instrumentation And Photography
Report/Patent Number
NAS 1.15:83973
NASA-TM-83973
Accession Number
83N19073
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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