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1. (WO2018219421) WAVELENGTH DIVISION MULTIPLEXING DEVICE AND METHOD

Pub. No.:    WO/2018/219421    International Application No.:    PCT/EP2017/062884
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Tue May 30 01:59:59 CEST 2017
IPC: H04J 14/02
H04J 14/06
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
DHARANIPATHY, Ulagalandha Perumal
Inventors: DHARANIPATHY, Ulagalandha Perumal
TASSAERT, Martijn
LAMPONI, Marco
TAILLAERT, Dirk
Title: WAVELENGTH DIVISION MULTIPLEXING DEVICE AND METHOD
Abstract:
The present invention provides a WDM, device (100) for demultiplexing an optical signal (101) including a plurality of N wavelength channels. The device (100) comprises at least one demultiplexer block (102) configured to split the optical signal into two half-channel signals (103) for each wavelength channel. The device (100) further comprises a mode mapping block (104) configured to map one half-channel signal (103) related to a split wavelength channel into a first polarization mode, and the other half-channel signal (103) related to the same split wavelength channel into a second polarization mode. The device (100) also comprises an output block (105) for each wavelength channel, which is configured to combine all polarized half-channel signals related to the same wavelength channel.