| 摘要 |
PROBLEM TO BE SOLVED: To provide a wavelength dispersion measuring device capable of accuracy improvement and speed heightening of dispersion measurement. SOLUTION: This wavelength dispersion measuring device is equipped with a wavelength dispersion measuring means 10 wherein a wavelength dispersion slope is provided on the transmission end side of a known optical fiber transmission path 17, and a wavelength conversion means 11 provided on the reception end side. The wavelength conversion means 11 receives the first and second light modulation signals for wavelength dispersion measurement, generates the third and fourth light modulation signals having each wavelength different from those of both modulation signals and not sandwiching a zero dispersion wavelength of the optical fiber transmission path 17, and transmits them toward the wavelength dispersion measuring means 10. The wavelength dispersion measuring means 10 generates the first and second light modulation signals and transmits them toward the wavelength conversion means 11, receives the third and fourth light modulation signals transmitted from the wavelength conversion means 11, detects the mean value of wavelength dispersion of the optical fiber transmission path 17 from each wavelength of both light modulation signals and correlation between both light modulation signals, and measures the wavelength dispersion. COPYRIGHT: (C)2007,JPO&INPIT
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