Interlocked high power fiber system using OTDR

Details Interlocked high power fiber system using OTDR Interlocked high power fiber system using OTDR

1996-10-10

1999-10-12

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

G01N 2188

Patent

active

059662069

ABSTRACT:
The in-fiber safety interlock system includes a high power (Class IV) laser interlocked to an OTDR. A plurality of WDM data signals are transmitted over the fiber system, including a terminal portion and an extended portion. A control circuit is connected to the laser and the OTDR. The OTDR monitors the integrity of the fiber system, including both the terminal portion and the extended portion. If the OTDR detects a fault in the optical transmission path, the OTDR and the control circuit operate to automatically disable or shut down the laser.

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patent: 5251001 (1993-10-01), Dave et al.
patent: 5270537 (1993-12-01), Jacobs
Steve Newton, "A New Technique in O.T.D.R.," Electronics & Wireless World, pp. 496-500 and 557-560. (No Date).
J.N. Ross, "Design Note: A Photon Arrival Timer For High-Resolution Optical Time Domain Reflectometry," Meas. Science Technology, Mar. 19, 1990, pp. 828-830.
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International Standard, CFI IEC 825-1, "Part 1: Safety of Laser Products--Equipment Classification, Requirements and User's Guide," First Edition, 1993, pp. 1-207.
International Standard, CFI IEC 825-2, "Part 2: Safety of Laser Products--Safety of Optical Fibre Communication Systems," First Edition, 1993, pp. 1-31.

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