Invention Grant
- Patent Title: Safe-mode OTDR method
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Application No.: US15050146Application Date: 2016-02-22
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Publication No.: US09641243B2Publication Date: 2017-05-02
- Inventor: Stéphane Perron
- Applicant: EXFO INC.
- Applicant Address: CA Quebec
- Assignee: EXFO INC.
- Current Assignee: EXFO INC.
- Current Assignee Address: CA Quebec
- Agency: Erise IP, P.A.
- Main IPC: H04B10/071
- IPC: H04B10/071

Abstract:
A safe-mode OTDR method for characterizing an optical fiber link is provided, as well as an OTDR apparatus operating under such a safe mode. The method includes performing OTDR acquisitions along the fiber link using an OTDR apparatus connected at a proximal end of the optical fiber link, and operating under OTDR acquisition conditions that have been deemed safe for a communication device at a distal end of the fiber link. The obtained reflectometric trace, representing a proximal portion of the optical fiber link, is used to determine a partial-link loss value associated with the proximal portion of the fiber link. Modified acquisition conditions that are safe for the communication device are determined based on the partial-link loss value and on loss-related maximum rating parameters for the communication device. The process is repeated using the modified OTDR acquisition conditions until the end of the link has been reached.
Public/Granted literature
- US20160248499A1 SAFE-MODE OTDR METHOD Public/Granted day:2016-08-25
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