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Expired Canadian patentCanada

Method for the optical transmission of polarization multiplex signals

CA 2595628 C · Owner: Xieon Networks S.A.R.L. · Inventors: Hecker, Nancy; Van Den Borne, Dirk; Paetsch, Werner

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Abstract From the Canadian patent

In order to reduce mutual interferences between POLMUX (PMS1) and (PMS2) signals, the inventive method consists in transmitting said signals with differed to each other carrying signals (TS1x TS1y; TS2x, TS2y), thereby , making it possible to obtain the circular polarisation of each resulting POLMUX signal (PMS1, PMS2). Each second POLMUX (PMS2) signal is transmissible with an opposite circular polarisation. In order to reduce also interferences when only one modulated data signal (PS2x PS2y) is transmitted through a , POLMUX channel a polarisation plane of modulated data signals (PS2x PS2y) of , each second POLMUX (K2) channel is turned at 45~. In a variant polarisation , multiplex …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed January 25, 2006 and granted April 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 2006
GrantedApril 16, 2013
Term endedJanuary 25, 2026
Patent numberCA 2595628 C
Classification (IPC)H04J14/06 +1 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJan 25, 2006Patent grantedApril 16, 2013Term endedJan 25, 2026

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