Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1986-07-09
1988-05-24
Lee, John
Optics: measuring and testing
Range or remote distance finding
With photodetection
350 9619, 356 731, G02B 626, G01N 2100
Patent
active
047461845
ABSTRACT:
A light coupler for use in optical reflectometry on both single mode and multimode optical fibers. The single mode embodiment contains a polarized beam splitter, a depolarizer and a socket to hold an optical fiber. The beam splitter is oriented to transmit substantially all of the light in an incident beam of light, through the depolarizer to the optical fiber. Reflections from the optical fiber pass through the depolarizer to the beam splitter where 50% of the light is directed to a measuring output.
REFERENCES:
patent: 4199226 (1980-04-01), Weber et al.
patent: 4212537 (1980-07-01), Golob et al.
"Electronics Letters" vol. 18, No. 20.
"Electronics Letters" vol. 17, No. 5.
Frazzini John A.
Hewlett--Packard Company
Lee John
Ngo John
LandOfFree
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