Optical communication apparatus and correcting method
AssigneeFujitsu Optical Components Limited
InventorTOSHIO ISHII
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Abstract
An optical communication apparatus includes a level detector, an FIR filter, and a adjustor. The level detector detects level information that discriminates a change in a multi-value level based on an input signal used in a multi-value amplitude modulation system. The FIR filter compensates a signal band of the input signal in accordance with tap coefficients of a plurality of multipliers. The adjustor corrects the tap coefficient of each of the multipliers included in the FIR filter based on the level information detected in the level detector.
Claims8
An optical communication apparatus comprising:
- a level detector that detects level information that discriminates a change in a multi-value level based on an input signal used in a multi-value amplitude modulation system;
- an FIR filter that compensates a signal band of the input signal in accordance with tap coefficients of a plurality of multipliers;
- and
- an adjustor that corrects, based on the level information detected in the level detector, the tap coefficient of each of the multipliers included in the FIR filter.
A correcting method performed by an optical communication apparatus, the correcting method comprising:
- detecting level information that discriminates a change in a multi-value level based on an input signal used in a multi-value amplitude modulation system;
- compensating a signal band of the input signal in accordance with tap coefficients of a plurality of multipliers included in an FIR filter;
- and
- correcting the tap coefficient of each of the multipliers included in the FIR filter based on the detected level information.
Dependencies are inferred from the claim text.