Optical waveguides – With optical coupler – Particular coupling structure
Patent
1997-05-09
1998-07-14
Palmer, Phan T. H.
Optical waveguides
With optical coupler
Particular coupling structure
385 43, 385 41, 385123, G02B 626
Patent
active
057816794
ABSTRACT:
A method and apparatus for tapping and distributing light propagating through a polymer optical fiber (POF). Within the polymer optical fiber, one or more mirrors are constructed. At a point in the POF where an internal mirror is constructed, light traversing the POF is efficiently diverted out of the polymer optical fiber upon striking the mirror. The light so diverted passes through a dispersing region such that only diffuse light is emitted and may be put to an advantageous use. Alternatively, a controllable shutter is placed within the polymer optical fiber such that light traversing the POF is diverted out of the polymer optical fiber upon striking the mirror when the controllable shutter so permits. The controllable shutter is variable so that variable amounts of light may be selectively emitted from the POF.
REFERENCES:
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F. Suzuki, "Novel Plastic Image-Transmitting Fiber", SPIE vol. 1592, Plastic Optical Fibers, 1991, No Month.
G. Brun et al, "Plastic Optical Fiber For Lateral Illumination: Chemical Studies and Optical Measurements", The European Institute for Communications and Networks, Geneva, 1995, No Month.
J. Farenc, et al, "Illumination, Signalisation and Decoration Using Plastic Optical Fibers", The European Institute for Communciations and Networks, Geneva, 1995.
S. Sottini et al, "Optical Fiber-Polymer Guide Coupling by a Tapered Graded Index Glass Guide", IEEE Journal of Quantum Electronics, vol. 31, No. 6, Jun. 1995.
Y. Li et al, "Distribution of Light Power and Optical Signals Using Embedded Mirrors Inside Polymer Optical Fibers", IEEE Photonics Technology Letters, vol. 8, No. 10, Oct. 1996.
Li Yao
Wang Ting
Brosermer Jeffrey J.
NEC Research Institute Inc.
Palmer Phan T. H.
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