High speed bidirectional optical time-domain reflectometer (OTDR)-based testing of device under test
AssigneeViavi Solutions Inc.
InventorsCharlène Roux, Julien Barrier
Life of this patent
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Abstract
In some examples, high speed bidirectional OTDR-based testing may include transmitting data from a first end of a device under test (DUT) towards an optical time-domain reflectometer (OTDR) that is operatively connected to a second opposite end of the DUT. Further data that is transmitted by the OTDR may be received from the second opposite end of the DUT towards the first end of the DUT. Based on an amplitude of the further data, a direction of receiving of the further data may be adjusted towards a first receiver or towards a second receiver.
Claims20
A non-transitory computer readable medium having stored thereon machine readable instructions, the machine readable instructions, when executed by at least one hardware processor, cause the at least one hardware processor to:
- transmit optical data for bidirectional testing of a fiber optic link from a first end of a device under test (DUT) towards an optical time-domain reflectometer (OTDR) that is operatively connected to a second opposite end of the DUT;
- receive further optical data for the bidirectional testing of the fiber optic link that is transmitted by the OTDR from the second opposite end of the DUT towards the first end of the DUT;
- receive, by an avalanche photodiode, the further optical data that is transmitted by the OTDR from the second opposite end of the DUT towards the first end of the DUT;
- and
- adjust, by a laser current controller, an output optical power of an optical source that is used to transmit the optical data.
A method comprising:
- transmitting, by at least one hardware processor, data from a first end of a device under test (DUT) towards an optical time-domain reflectometer (OTDR) that is operatively connected to a second opposite end of the DUT;
- receiving, by the at least one hardware processor, further data that is transmitted by the OTDR from the second opposite end of the DUT towards the first end of the DUT;
- and
- receiving, by an avalanche photodiode, the further data that is transmitted by the OTDR from the second opposite end of the DUT towards the first end of the DUT.
An apparatus comprising:
- a data transmitter, executed by at least one hardware processor, to transmit data from a first end of a device under test (DUT) towards an optical time-domain reflectometer (OTDR) that is operatively connected to a second opposite end of the DUT;
- a data receiver, executed by the at least one hardware processor, to receive further data that is transmitted by the OTDR from the second opposite end of the DUT towards the first end of the DUT;
- and
- a laser current controller to adjust an output optical power of an optical source that is used to transmit the data.
Dependencies are inferred from the claim text.