Patent ID: 6714290
Filing Date: 2004-03-30
Classification: G01M

Abstract:
A method for measuring a far-end reflectance of a fiber-optic cable, comprising the steps of:connecting an end face of the fiber-optic cable to a transceiver comprising a transmitter for transmitting an optical signal and a receiver for receiving an optical signal; transmitting an optical signal from the transmitter of the transceiver and receiving the optical signal reflected by the other end face of the fiber-optic cable, and measuring a first amount of light of the reflected optical signal, wherein the other end face of the fiber-optic cable is open to air; transmitting an optical signal from the transmitter of the transceiver and receiving the optical signal reflected by the other end face of the fiber-optic cable, and measuring a second amount of light of the reflected optical signal, wherein the other end face of the fiber-optic cable is made to contact a solid having the same or substantially the same refractive index as that of the fiber-optic cable; and measuring the far-end reflectance of the fiber-optic cable based on the first and second amounts of light.