Coherent receiver based virtual optical spectrum analyzer
AssigneeCiena Corporation
InventorsAndrew Sinclair, Eric Maniloff
Life of this patent
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Abstract
A coherent receiver adapted to operate as an Optical Spectrum Analyzer (OSA) includes an optical front end adapted to receive an optical signal and to mix the optical signal with a local laser; a photodetector block coupled to the optical front end and adapted to receive an output of the optical front end and provide an output corresponding to spectral components of the optical signal; and a controller coupled to the optical front end and the photodetector block, wherein the controller is adapted to operate in an OSA mode to sweep the local laser across a portion of optical spectrum to perform an OSA measurement while not performing data demodulation.
Claims17
A coherent receiver adapted to operate as an Optical Spectrum Analyzer (OSA), the coherent receiver comprising:
- an optical front end adapted to receive an optical signal and to mix the optical signal with a local laser signal;
- a photodetector block coupled to the optical front end and adapted to receive an output of the optical front end and provide an output corresponding to spectral components of the optical signal;
- and
- a controller coupled to the optical front end and the photodetector block, wherein the controller is adapted to operate in an OSA mode to sweep the local laser signal across a portion of optical spectrum to perform an OSA measurement while not performing data demodulation, wherein the controller is adapted to provide the OSA measurement to one or more of a control plane and an external server comprising any of a Software Defined Networking (SDN) controller, a Network Management System (NMS), and an Element Management System (EMS).
A coherent receiver operation method to perform Optical Spectrum Analysis (OSA), the coherent receiver operation method comprising:
- receiving an optical signal;
- mixing the optical signal with a local laser signal, the local laser signal being swept across a portion of optical spectrum to perform an OSA measurement while not performing data demodulation;
- detecting via a photodetector block an output of the mixing corresponding to spectral components of the optical signal;
- and
- providing the OSA measurement to one or more of a control plane and an external server comprising any of a Software Defined Networking (SDN) controller, a Network Management System (NMS), and an Element Management System (EMS).
A controller in a coherent receiver adapted to operate the coherent receiver as an Optical Spectrum Analyzer (OSA), the controller comprising:
- a processor;
- and
- memory storing instructions that, when executed, cause the processor to
- cause a local laser signal in the coherent receiver to sweep across a portion of optical spectrum to perform an OSA measurement while the coherent receiver is not performing data demodulation,
- receive an output from photodetector block in the coherent receiver and determine spectral components of an optical signal mixed with the local laser signal, and
- provide the OSA measurement to an external server comprising any of a Software Defined Networking (SDN) controller, a Network Management System (NMS), and an Element Management System (EMS).
Dependencies are inferred from the claim text.