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US 7,689,126 B2Granted
Wavelength dispersion compensation control method and wavelength dispersion compensation control device
AssigneeFujitsu Limited
InventorNobuyuki Nemoto
Life of this patent
Estimating the term…
Abstract
A wavelength dispersion compensation control method determining whether a clock component is contained in an optical signal received from an optical transmission path and, if a clock component if contained in the optical signal, extracting the clock component, and stopping control of a variable wavelength dispersion compensator when no clock component is extracted.
Claims6
A wavelength dispersion compensation control method comprising:
- determining whether a clock component is contained in an optical signal received from an optical transmission path and, if a clock component if contained in the optical signal, extracting the clock component;
- and
- stopping control of a variable wavelength dispersion compensator when no clock component is extracted.
A wavelength dispersion compensation control device comprising:
- a clock extracting unit configured to extract a clock component from a received optical signal;
- a variable wavelength dispersion compensator to which the received optical signal is input;
- and
- a control stop unit configured to stop control of the variable wavelength dispersion compensator when no clock component is extracted by the clock extracting unit.
1 more element
A wavelength dispersion compensation control device comprising:
- a variable wavelength dispersion compensator to which a received optical signal is input;
- a spectral analyzer configured to measure a spectrum of the received optical signal;
- an analyzing and comparing unit configured to analyze and compare a peak value of a particular wavelength and a base value of noise light that are obtained by executing spectral analysis on a signal measured by the spectral analyzer;
- and
- a control stop unit configured to stop control of the variable wavelength dispersion compensator when the peak value of the particular wavelength is not greater than the base value of the noise light.
2 more elements
Dependencies are inferred from the claim text.