Patent ID: 6614512
Filing Date: 2003-09-02
Classification: G01M

Abstract:
An apparatus for measuring wavelength dispersion for each of a plurality of optical fibers that are connected in series by at least one connecting point and form a to-be-measured optical fiber, said apparatus comprising:a light source for emitting optical pulses of a plurality of wavelengths; branching means for transmitting the optical pulses emitted from the light source to one end of the to-be-measured optical fiber and extracting reflected light from the optical fiber; light receiving means for detecting the reflected light from the branching means and outputting the reflected light as measurement data; and processing means for calculating a wavelength dispersion value of the optical fiber to be measured, by detecting a time of emitting the optical pulse of each of said plurality of wavelengths from the light source and a time of receiving the reflected light of the wavelength by the light receiving means, wherein the processing means calculates wavelength dispersion values of the respective optical fibers by detecting the time of emitting the optical pulse, the time of receiving the corresponding reflected light from the connecting point and a time of receiving the corresponding reflected light from another end of the optical fiber.