Optical communication techniques
AssigneeHewlett Packard Enterprise Development LP
InventorDavid A Warren
Life of this patent
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Abstract
Techniques relating to optical communications are illustrated. In an example, a system for optical communications includes a laser emitting device including an emission surface for emission of a laser beam. An optical waveguide may be optically coupled to the laser emitting device to receive the laser beam from the laser emitting device. A fault photo-detector surrounds the emission surface. The fault photo-detector is to detect a portion of the laser beam accidentally back-reflected towards the laser emitting device.
Claims18
A system for optical communication, the system comprising:
- a laser emitting device including an emission surface for emission of a laser beam;
- an optical waveguide optically coupled to the laser emitting device to receive the laser beam from the laser emitting device;
- a fault photo-detector surrounding the emission surface, the fault photo-detector being to detect only that portion of the laser beam accidentally back-reflected towards the laser emitting device;
- and
- a monitoring photo-detector to monitor output of the laser emitting device for purposively coupling thereto a portion of laser light emitted by the laser emitting device, to identify fluctuations of output of the laser.
A system for optical communication, the system comprising:
- a laser emitting device including an emission surface for emission of a laser beam into an optical waveguide;
- a fault photo-detector surrounding the emission surface to generate a signal output in response to only that light accidentally back-reflected towards the laser emitting device;
- and
- a fault detection module communicatively connected to the fault photo-detector to detect a fault condition of the system on the basis of the signal output of the fault photo-detector;
- and
- a monitoring photo-detector to monitor output of the laser emitting device for purposively coupling thereto a portion of laser light emitted by the laser emitting device, to identify fluctuations of output of the laser.
A method of manufacturing a system for optical communication, the method comprising:
- optically coupling a laser emitting assembly to an optical waveguide for coupling a laser beam emitted from the laser emitting device into the optical waveguide, the laser emitting assembly including:
- (i) an emission surface for emitting a laser beam;
- (ii) a fault photo-detector surrounding the emission surface;
- and (iii) a monitoring photo-detector;
- and
- configuring the system such that the fault photo-detector detects only that light accidentally back-reflected from the optical waveguide towards the laser emitting device;
- and
- configuring the system such that the monitoring photo-detector is to monitor output of the laser emitting device for purposively coupling thereto a portion of laser light emitted by the laser emitting device, to identity fluctuations of output of the laser.
Dependencies are inferred from the claim text.