Patent · US Active

Method and arrangement for blind demultiplexing a polarisation diversity multiplex signal

US8707138B2 · kind B2 · utility

0Cited by

7References

11Claims

0Family size

Assignee

XIEON NETWORKS S.a.r.l. · LU

Inventors

Maxim Kuschnerov · Birkenfeld, DE
Berthold Lankl · Egmating, DE
Bernhard Spinnler · Munich, DE

Key dates

Filing date	May 28, 2009
Grant date	Apr 22, 2014
Priority date	—
Expiry date	Nov 17, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/223
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A received optical signal is coherently demodulated and converted into orthogonal x-polarization samples, and y-polarization samples. These samples are converted into signal x-samples and signal y-samples by an FIR butterfly filter. Correction values are calculated in an error calculating circuit of a control unit and added to filter transfer functions derived by a standard algorithm to determine corrected filter coefficients. Degenerate convergences calculating the transfer functions are avoided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.