Compensation system for adaptive equalization of an optical...

Optical waveguides – With optical coupler – Particular coupling function

Reexamination Certificate

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C398S081000, C398S149000, C385S039000

Reexamination Certificate

active

06856724

ABSTRACT:
A compensation system for adaptive equalization of an optical signal, wherein an optical filter, whose complex coefficients are adjustable, is used for signal equalization. The quality of the optical signal is used, after conversion to an electrical data signal, as a control criterion. The compensation device can largely compensate for distortion produced by dispersion, polarization mode dispersion or self phase modulation. An optical compensation filter with a wide free spectral range is used to compensate for the wavelength-dependent dispersion in a wavelength-division multiplexed system. The setting of the filter may be fixed, or may be adjusted adaptively in a closed control loop.

REFERENCES:
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patent: WO 0050944 (2000-08-01), None
patent: WO 0161889 (2001-08-01), None
Bulow et al., “Adaptive PMD Mitigation at 10 Gbit/s using an Electronic SiGe Equalizer IC”, pp. 138-139.
Merker et al., “Comparison of PMD-compensation techniques at 10 Gbit/s using an optical first order compensator and electrical transversal filter”, pp. 135-141.

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