Device and a method for processing a digital signal in a...

Details Device and a method for processing a digital signal in a... Device and a method for processing a digital signal in a...

2005-07-29

2008-08-05

Leung, Christina Y. (Department: 2613)

Optical communications

Receiver

Heterodyne

C398S065000, C398S152000

Reexamination Certificate

active

07409166

ABSTRACT:
A device for processing a digital signal of an optical transmission system is described. The device comprises: a polarization beam splitter for receiving the signal, a phase shifter for shifting the phase of the signal at the orthogonal output of the polarization beam splitter, and means for combining the signal at the parallel output of the polarization beam splitter and the shifted signal.

REFERENCES:
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patent: 6671437 (2003-12-01), Margalit
patent: 2002/0118422 (2002-08-01), Cao
patent: 2003/0090768 (2003-05-01), Liu et al.
Napasab V et al: “Polarization Recombining: A New Automatic Polarization Control Scheme For Heterodyne or Homodyne Optical Receivers,” Journal of Optical Communications, Fachverlag Schiele & Schon, Berlin, DE, vol. 9, No. 9, Sep. 1, 1988, pp. 102-107, XP000000862.

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