Optical signal processing device
AssigneeFujitsu Limited
InventorShigeki WATANABE
Life of this patent
Estimating the term…
Abstract
An optical signal processing device includes a waveform width widening unit configured to widen a waveform width of an optical signal; and an optical limiter circuit, to which the optical signal the waveform width of which is widened is input, configured to suppress an intensity of the optical signal in a region where an input intensity and an output intensity are not proportional.
Claims18
An optical signal processing device, comprising:
- a waveform width widening unit configured to widen a waveform width of an optical signal;
- and
- an optical limiter circuit, to which the optical signal the waveform width of which is widened is input, configured to suppress an intensity of the optical signal in a region where an input intensity and an output intensity are not proportional.
An optical signal processing device which processes an optical signal to carry information using a first state corresponding to an optical intensity higher than a certain threshold level, and a second state corresponding to an optical intensity lower than the threshold level, comprising:
- a waveform transforming unit configured to transform a waveform of the optical signal so that an existence ratio of the first state increases;
- and
- an optical limiter circuit configured to suppress an intensity of the optical signal in a time domain where the optical signal output from the waveform transforming unit is in the first state.
An optical transmission system having a repeater station on an optical transmission line between a transmitting station and a receiving station, wherein:
- the repeater station comprises an optical signal processing device;
- the optical signal processing device comprises
- a waveform width widening unit configured to widen a waveform width of an optical signal, and
- an optical limiter circuit, to which the optical signal the waveform width of which is widened is input, configured to suppress an intensity of the optical signal in a region where an input intensity and an output intensity are not proportional;
- and
- the receiving station comprises a dispersion compensation unit to compensate for dispersion occurring in the optical transmission line and the repeater station.
An optical transmission system having a transmitting station, a receiving station, and an optical transmission line between the transmitting station and the receiving station, wherein:
- the receiving station comprises an optical signal processing device;
- the optical signal processing device comprises
- a waveform width widening unit configured to widen a waveform width of an optical signal, and
- an optical limiter circuit, to which the optical signal the waveform width of which is widened is input, configured to suppress an intensity of the optical signal in a region where an input intensity and an output intensity are not proportional;
- and
- the receiving station comprises a dispersion compensation unit to compensate for dispersion occurring in the optical transmission line.
Dependencies are inferred from the claim text.