公开(公告)号：US20230228649A1

公开(公告)日：2023-07-20

申请号：US18096456

申请日：2023-01-12

Applicant: EXFO Inc.

Inventor： Michel LECLERC ,  Nicholas COLE

IPC: G01M11/00

CPC classification number: G01M11/33

Abstract: There is provided herein a solution for measuring the optical power loss of duplex optical-fiber devices under test, and particularly those terminated with a duplex connector interface, which allows for a one-cord or one-cord equivalent testing method whichever the format of the duplex connector interface of the optical-fiber device under test, and this without disconnecting the optical fibers of the device under test from their duplex native connector interface. There is provided an optical-fiber expansion device to be used to interconnect and adapt a power meter instrument to a variety of duplex connectors. The proposed optical-fiber expansion device comprises a pair of optical fibers having a core diameter and a numerical aperture that are greater than those of the optical fiber in the DUT connector interface, so as to make it compatible with the one-cord testing method. Interchangeable optical-fiber expansion devices can be used to match the power meter interface on one side, to various duplex connector interfaces under test on the other side.