Calient Networks, Inc.

Kaushal K Agrawal

Kevin J White

Peter Hunt

David N K Wong

Rob Lofland

A technique is disclosed for performing testing of an optical device under test (DUT). According to a specific embodiment, the DUT includes a plurality of DUT optical input ports and a plurality of DUT optical output ports. The testing may be performed by an optical switching testing system (OSTS) which includes a plurality of OSTS output ports optically connected to a plurality of DUT input ports, and a plurality of OSTS input ports optically connected to a plurality of DUT output ports. Components of the OSTS are configured in order to perform a specific test on the DUT. A first test scenario is configured at the DUT. At least one optical test signal is transmitted to at least one DUT input port. Test results may then be obtained by monitoring at least one DUT output port for the presence or absence of light. The test results are then analyzed for specific characteristics. According to a specific embodiment, the OSTS of the present invention may be adapted to automatically perform a plurality of testing operations on a selected plurality of different optical paths associated with the DUT. Such testing operations may include, for example, transmitting a plurality of optical test signals to a plurality of DUT input ports during a given test scenario, and/or monitoring a plurality of DUT output ports for test results during a given test scenario. According to a specific embodiment, the optical switch testing system of the present invention may be used to measure and verify selected characteristics associated with a device under test (DUT) or a system under test (SUT). Such characteristics may include, for example, optical cross talk, insertion loss, polarization dependent loss, path switching time, data integrity, optical path verification, optical path stability, etc.

Multipurpose testing system for optical cross connect devices

A TL1 usage model generator arranged to provide a statistically accurate usage model based upon a particular user profile is described. The TL1 usage model generator is connected to a translator arranged to expand the usage model provided the by TL1 usage model generator into a fully meshed file. Coupled to the translator, a TL1 sequence generator uses the fully meshed file to automatically generate a random sequence of TL1 commands that is provided to an execution engine configured to read the random sequence of TL1 commands. The execution engine, in turn, sends the random sequence of TL1 commands to the system under test (SUT) the results of which are forwarded to and written in a result data base used by a post processor to verify the validity of the system response.

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San Jose, CA, United States of America

Kaushal K Agrawal