The Apparatus and Method for Measuring the Zero-Dispersion Wavelength in Dispersion-Shifted Fiber using Spectrum-Siced Light Source

摘要

1. TECHNICAL FIELD OF THE INVENTION;The present invention relates to an apparatus and a method for measuring a zero dispersion wavelength of a dispersion transition optical fiber using a spectral split light source.;2. The technical problem to be solved by the invention;An object of the present invention is to provide a zero-dispersion wavelength measuring apparatus and method for dispersing transition optical fibers, which can easily measure zero-dispersion wavelengths by a four-wave mixing effect by using one spectral split light source having a wide bandwidth.;3. Summary of Solution to Invention;The present invention relates to a zero-dispersion wavelength measurement apparatus for a distributed transition optical fiber using a spectral split light source, in which a pump light source is applied to an erbium-doped optical fiber (hereinafter referred to as "EDF") in a reverse direction to provide a wide bandwidth optical signal. Light source generating means for generating; Advertising means for transmitting the optical signal generated by the light source generating means while preventing reverse scattering; First filtering means for spectrally dividing the optical signal received by the adsorbing means; Optical amplification means for amplifying the optical signal spectrum-divided by the first filtering means; Second filtering means for removing noise generated in the signal amplification process by the optical amplifier; Optical distribution means for dividing and outputting an optical signal from which the noise is removed by the second filtering means; And optical spectrum analysis means for analyzing the spectrum of the optical signal by comparing the signals divided by the optical distribution means.;4. Important uses of the invention;The present invention is used for the measurement of the zero dispersion wavelength of a dispersion transition optical fiber.