Integrated optical time domain reflectometer/insertion loss meas

Details Integrated optical time domain reflectometer/insertion loss meas Integrated optical time domain reflectometer/insertion loss meas

1986-01-13

1987-08-11

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2184, G01N 2188

Patent

active

046857990

ABSTRACT:
A combination optical time domain reflectometer (OTDR) and insertion loss measurement system evaluates environmental stress effects on a test fiberoptic cable. A multiport coupler joins the OTDR and insertion loss system to the test fiberoptic cable via a precursor of like type and length with respect to the test cable. Nondestructive analysis, continuously and throughout, measures attenuation between any two points within the equilibrium region of the test cable, the quality of the splice between the precursor and the test cable and the degree of EMD disruption. Attenuation measurements over operating environmental conditions can be made to precisely determine the maximum allowable cable length. Visual readouts and permanent records of the EMD disruption and resultant excess attenuation provide real time analysis so that responsive corrective actions can be made.

REFERENCES:
patent: 4081258 (1978-03-01), Goell et al.
patent: 4360268 (1982-11-01), Zucker et al.
patent: 4391517 (1983-07-01), Zucker et al.
patent: 4397551 (1983-09-01), Bage et al.
patent: 4468117 (1984-08-01), Hartouni et al.
patent: 4497575 (1985-02-01), Philipp
Kashyap et al., "Measurement of Strain Relief in an Experimental Optical re Cable" Electronics Letters, Mar. 18, 1982, vol. 18, #6, pp. 263-265.

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