NDLI: Efficient Optical Couplings for Fiber-Distributed Solar Lighting

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Maxey, L. C. Cates, M. R. Jaiswal, S. L.
Copyright Year	2003
Abstract	Optical couplings in large core optical waveguides have many similarities with those in conventional optical fibers but pose some unconventional challenges as well. The larger geometry, looser manufacturing tolerances and reduced dimensional stability compound the problems associated with making low-loss couplings in large core waveguides. The individual factors contributing to coupling losses are discussed to develop an understanding of the extant loss mechanisms. Individual methods and materials employed to mitigate the impact of each of the dominant loss mechanisms are discussed in detail. A combination of endface geometry control, axial alignment constraint and refractive index matching are employed to produce highly efficient optical couplings in large core waveguides. The combination of these elements has significantly reduced the insertion losses due to connector couplings. Prior to implementing the current methods losses of 15% and greater were common but these have been reduced to 2%–5% with the current methods.
Sponsorship	Solar Energy Division
Starting Page	721
Ending Page	725
Page Count	5
File Format	PDF
ISBN	0791836762
DOI	10.1115/ISEC2003-44244
e-ISBN	0791836649
Volume Number	Solar Energy
Conference Proceedings	ASME 2003 International Solar Energy Conference
Language	English
Publisher Date	2003-03-15
Publisher Place	Kohala Coast, Hawaii, USA
Access Restriction	Subscribed
Subject Keyword	Couplings Geometry Stability Refractive index Solar energy Waveguides Manufacturing Fibers Optical fiber
Content Type	Text
Resource Type	Article

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