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1. IN2134/MUMNP/2007 - OPTICAL NETWORK RESTORATION TECHNIQUE

Office
India
Application Number 2134/MUMNP/2007
Application Date 17.12.2007
Publication Number 2134/MUMNP/2007
Publication Date 01.02.2008
Publication Kind A
IPC
H04B 10/213
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
12Transmission through light guides, e.g. optical fibres
20Arrangements for networking, e.g. bus or star coupling
213using a T-type coupler
H04B 10/08
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
02Details
08Equipment for monitoring, testing or fault measuring
Applicants ERICSSON AB
Inventors BOGONI ANTONELLA
MAGRI ROBERTO
CECCATELLI RICCARDO
Title
(EN) OPTICAL NETWORK RESTORATION TECHNIQUE
Abstract
(EN) A method and apparatus for restoration of operating conditions of a WDM optical ring network comprising a plurality of amplifiers linked together in a ring after a break or fault has occurred in the network. The method comprises in response to repair of the break or other fault, increasing output power or /and pump power of an amplifier in the network such that the output power or/and pump power increases substantially in accordance with a ramp function.