Importance

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Abstract

A method and apparatus are described for allowing diagnostics of a Passive Optical Network without significant loss of service to active customer sites. A plurality of primary transmitters operating at a first wavelength band are coupled to an optical switch of an optical network operating at a first wavelength band. A backup transmitter operating at the first wavelength band is coupled to a first input of a wavelength division multiplexer. An optical device operating at a second wavelength band is coupled to a second input of the wavelength division multiplexer. An output of the wavelength division multiplexer is coupled to an input of the optical switch. Outputs of the optical switch are coupled to a plurality of optical splitters. Each splitter has a plurality of optical outputs. The optical switch is reconfigured such that one of the optical switch outputs that was carrying traffic from one of the primary transmitters carries traffic from the backup transmitter after reconfiguring the optical switch.

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First Claim