US 12,442,719 B2
Duplex optical power loss measurement using an adaptor device
Michel Leclerc, Quebec (CA); and Nicholas Cole, Milton Keynes (GB)
Assigned to EXFO Inc., Quebec (CA)
Filed by EXFO Inc., Québec (CA)
Filed on Jan. 12, 2023, as Appl. No. 18/096,456.
Claims priority of provisional application 63/356,512, filed on Jun. 29, 2022.
Claims priority of provisional application 63/266,924, filed on Jan. 19, 2022.
Prior Publication US 2023/0228649 A1, Jul. 20, 2023
Int. Cl. G01M 11/00 (2006.01)
CPC G01M 11/33 (2013.01) 16 Claims
OG exemplary drawing
 
1. An optical-fiber expansion device, for use in combination with a power meter device and a light source device for measuring an optical power loss of a duplex device under test (DUT), the optical-fiber expansion device comprising:
a first duplex connector interface for interfacing with an input connector interface of the power meter device, the first duplex connector interface defining a fixed first spacing between two optical-fiber ferrules that is compatible with the input connector interface of the power meter device;
a second duplex connector interface for interfacing with a duplex connector interface of the DUT, the second duplex connector interface defining a fixed second spacing between two optical-fiber ferrules that is compatible with the duplex connector interface of the DUT, said second spacing being different from said first spacing; and
two optical fibers each extending between one ferrule of the first duplex connector interface and one ferrule of the second duplex connector interface and adapting an optical fiber spacing between the first spacing on a first end and the second spacing on a second end, wherein the two optical fibers have a core diameter and a numerical aperture that are greater than those of an optical fiber in the duplex connector interface of the DUT.