Frequency transposition of optical signals

Frequency transposition of optical signals

A device for the frequency transposition of optical signals receiving data elements liable to be at different wavelengths ( lambda 0, lambda 1 . . . lambda n) and capable of delivering, at output, these data elements at one of the reception wavelengths. The device comprises a circulator (30); at lea...

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Hauptverfasser: FRANCOIS TILLEROT, MOUHAMMAD JAMIL CHAWKI, GEORGES CLAVEAU
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
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creator FRANCOIS TILLEROT
MOUHAMMAD JAMIL CHAWKI
GEORGES CLAVEAU
description A device for the frequency transposition of optical signals receiving data elements liable to be at different wavelengths ( lambda 0, lambda 1 . . . lambda n) and capable of delivering, at output, these data elements at one of the reception wavelengths. The device comprises a circulator (30); at least one optical arm comprising a rejection filter (31) followed by a wavelength converter (32); the circulator comprising a port for the reception of the data packets at the different wavelengths ( lambda 0, lambda 1 . . . lambda n), a port for the transmission of data packets without changing their wavelength and at least one other port for each optical arm, so that each of these ports is connected to a rejection filter (31) to receive the data packets at the different wavelengths and reintroduce the data packets reflected by this filter into the circulator; the converter (32) at output of each rejection filter enabling the conversion into a desired wavelength of the data packets not reflected by the filter. The invention can be applied to asynchronous packet or synchronous frame transmission packets.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
title Frequency transposition of optical signals
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