Chromatic dispersion compensating apparatus
AssigneeFujitsu Limited
InventorsHiroki Ooi, Takashi Iwabuchi, Takafumi Terahara, Junichi Kumasako, George Ishikawa, Tomoo Takahara
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Abstract
In order to compensate for chromatic dispersion ad dispersion slope over an entire wavelength band of the optical signal, the wavelength band is split into a plurality of bands, and chromatic dispersion compensation is made to make chromatic dispersion in a central wavelength of each of the bands zero.
Claims12
A chromatic dispersion compensating apparatus for use in a wavelength-division multiplexed optical transmission system, comprising:
- a band splitting unit splitting a wavelength-division multiplexed optical signal into a plurality of wavelength bands;
- and
- a fixed dispersion compensating unit making compensation for residual dispersion for split wavelength-division multiplexed optical signals.
A chromatic dispersion compensating apparatus for use in a wavelength-division multiplexed optical transmission system, comprising:
- a variable dispersion compensating unit making dispersion compensation simultaneously for a whole or part of a wavelength multiplexed optical signal;
- an optical splitting unit splitting the wavelength multiplexed optical signal;
- and
- a fixed dispersion compensating unit making compensation for residual dispersion for an optical signal of each split channel.
The chromatic dispersion compensating apparatus for use in a wavelength multiplexed optical transmission system, comprising:
- a band splitting unit splitting a wave-length division multiplexed optical signal into a plurality of wavelength bands;
- and
- a dispersion compensating unit reducing a residual dispersion difference between bands for respective split wavelength bands,
- wherein said dispersion compensating unit is a fixed dispersion compensator.
Dependencies are inferred from the claim text.