Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1995-02-13
1996-10-29
McGraw, Vincent P.
Optics: measuring and testing
For optical fiber or waveguide inspection
G01N 2184
Patent
active
055701760
ABSTRACT:
An apparatus to convert optical power into a voltage includes a wavelength selector switch and can plug itself into any multi-meter. The converter apparatus comprises an annular connector which adapts onto any type of optical fiber connectors which may be of various diameters. A photo-diode at the receiving end is large enough so as not to require that the optical fiber be at a 90.degree. angle to the photo-diode surface at any time, so the surface gets the best possible reading. A switch on the converter housing allows to calibrate instantly the converter at the right wavelength used for the test. The optical power is then converted and sent as a voltage value through a pair of banana plugs that can be affixed to any multi-meter. A battery within the housing provides the power to the converter so no external power source is needed. The converter allows the use of a low price multi-meter rather than needing a converter particularly built for this application.
REFERENCES:
patent: 4799787 (1989-01-01), Mason
patent: 5196899 (1993-03-01), Serwatka
Wendland et al, "A Decibel Measuring Instrument for Fiber Optics", Conference Electro-Optics/Laser International 80UK Brigton England (25-27 Mar. 1980). pp. 31-7.
Fotec Inc., Fiber Optic Converters, data sheets Biccotest Limited, T460, T470, T480, data sheets.
Rifocs Corporation, 550A series, data sheet Hewlett Packard, HP8140A, data sheets.
McGraw Vincent P.
Nortech Fibronic Inc.
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