Method and apparatus for generating and transferring high speed data for high speed testing applications
AssigneeWestinghouse Electric Corp.
InventorsAnastasios P. Goutzoulis, Peter J. Chantry, Tom Henningsen
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Abstract
An optical architecture is provided that can be used for generating high-speed input test vectors from low speed digital data and transferrring those test vectors to a device under test. The optical architecture employs gain-switched laser diodes or optical mixers to produce high-speed optical pulses from the low speed digital data. Optical multiplexing and variable delay devices process the high speed optical pulses to form a high-speed test vector. The architecture can generate test data with psec-type accuracy.
Claims35
An apparatus for generating high speed digital test vectors comprising:
- means for generating a plurality of parallel slow speed signals;
- a plurality of non-linear optical devices, each of said non-linear optical devices adapted to receive one of said plurality of parallel slow speed signals and transmit a high speed optical pulse signal;
- means for optically combining said plurality of parallel high speed optical pulses to form a serial high-speed input test vector;
- and
- means for expanding said high speed optical pulse signal.
An apparatus for generating high speed digital test vectors comprising:
- means for generating a plurality of parallel slow speed signals;
- a plurality of non-linear optical devices, each of said non-linear optical devices adapted to receive one of said plurality of parallel slow speed signals and transmit a high speed optical pulse signal;
- means for optically combining said plurality of parallel high speed optical pulses to form a serial high-speed input test vector;
- and
- said plurality of non-linear optical devices further comprising a plurality of laser diodes, each of said laser diodes adapted to convert one of said slow-speed signals to a high-speed optical signal.
A method for generating high speed digital test vectors comprising the steps of:
- generating a plurality of parallel slow speed signals;
- receiving said plurality of parallel slow speed signals in a plurality of non-linear optical devices and transmitting a plurality of high-speed optical pulses;
- expanding said high-speed optical pulses, and
- optically combining said plurality of parallel high speed optical pulses to form a serial high-speed input test vector.
A method for generating high speed digital test vectors comprising the steps of:
- generating a plurality of parallel slow-speed signals;
- receiving said plurality of parallel slow-speed signals in a plurality of non-linear optical devices and transmitting a plurality of high-speed optical pulses;
- and
- optically combining said plurality of parallel high-speed optical pulses to form a serial high-speed input test vector;
- wherein a plurality of laser diodes receives said plurality of parallel slow-speed signals and converts said plurality of parallel slow-speed signals to a plurality of high-speed optical signals.
Dependencies are inferred from the claim text.