Device and method of optical fiber condition monitoring in...

Details Device and method of optical fiber condition monitoring in... Device and method of optical fiber condition monitoring in...

2007-12-18

2007-12-18

Nguyen, Tu T. (Department: 2886)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

11204996

ABSTRACT:
A device and method of optical fiber condition monitoring in optical networks is described. The front end of each branch of the optical network is installed with an optical filter that can filter an optical signal with a different wavelength. Optical signals of different wavelengths enter each of the branches in sequence for analysis, so that the condition of each branch on the optical network can be determined. This solves the problem of interference among the branches when monitoring the optical fiber condition on an optical network.

REFERENCES:
patent: 5187362 (1993-02-01), Keeble
patent: 6614515 (2003-09-01), Fayer et al.
patent: 6771358 (2004-08-01), Shigehara et al.
Kuniaki Tanaka, et al., “In-service Individual Line Monitoring and a Method for compensating for the Temperature-dependent Channel Drift of a WDM-PON Containing an AWGR Using a 1.6 μm Tunable OTDR”, ECOC 97, Sep. 22-25, 1997, Conference Publication No. 448.
The Office Action issued by Japan Patent and Trademark Office on Jul. 18, 2007.

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