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.
Claims8
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, each wavelength band of the plurality of wavelength bands having a continuous wavelength band;
- a variable dispersion compensating unit making compensation simultaneously for split wavelength multiplexed optical signals;
- and
- an interleaving unit, which is arranged at a stage before said band splitting unit, separating the wavelength-division multiplexed optical signal, and converting the wavelength-division multiplexed optical signal into a plurality of optical signals whose channel intervals are widened.
A chromatic dispersion compensating apparatus for use in a wavelength-division multiplexed optical transmission system, comprising:
- an interleaving unit separating the wavelength-division multiplexed optical signal, and converting the wavelength-division multiplexed optical signal into a plurality of optical signals whose channel spacing is enlarged;
- a plurality of band splitting units splitting a plurality of optical signals whose channel spacing is enlarged into a plurality of wavelength bands, each wavelength band of the plurality of wavelength bands has a continuous wavelength band;
- a plurality of combining interleaver units combining the wavelength bands of the plurality of wavelengths bands;
- and
- a plurality of variable dispersion compensating units making compensation simultaneously for split wavelength multiplexed optical signals.
A chromatic dispersion compensating apparatus for use in a wavelength-division multiplexed optical transmission system, comprising:
- a plurality of band splitting units splitting a plurality of optical signals whose channel spacing is enlarged and outputting a plurality of wavelength bands, each wavelength band of the plurality of wavelength bands having a continuous wavelength band;
- a plurality of combining interleaver units combining the wavelength bands of the plurality of wavelengths, the wavelength bands being of the same band;
- and
- a plurality of variable dispersion compensating units making compensation simultaneously for split wavelength multiplexed optical signals.
Dependencies are inferred from the claim text.