Dispersion measurement apparatus using a wavelet transform to determine a time difference based on indentified peaks

摘要

A dispersion measurement apparatus includes: a pulse generator to output optical pulses including an optical pulse with a first wavelength and an optical pulse with a second wavelength to an optical transmission path, the second wavelength being different from the first wavelength; a reception pulse analyzer including an optical receiver that receives the optical pulses output by the pulse generator, and an analyzer that performs a wavelet transform on an electrical pulse output through the reception performed by the optical receiver; and a calculator to detect, based on a result of the wavelet transform, a time difference between the optical pulse with the first wavelength and the optical pulse with the second wavelength, and to determine dispersion in the optical transmission path.

主权项

1. A dispersion measurement apparatus comprising:
a pulse generator to output optical pulses including an optical pulse with a first wavelength and an optical pulse with a second wavelength to an optical transmission path, the second wavelength being different from the first wavelength; a reception pulse analyzer including an optical receiver that receives the optical pulses output by the pulse generator, and an analyzer that performs a wavelet transform on an electrical pulse output through the reception performed by the optical receiver, the reception pulse analyzer being arranged opposite to the pulse generator by the optical transmission path; and a calculator to identify peaks within data obtained from the wavelet transform and to detect a time difference between the optical pulse with the first wavelength and the optical pulse with the second wavelength based on the identified peaks within the data from the wavelet transform, and to determine dispersion in the optical transmission path from said time difference.