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Registered APPARATUS FOR MEASURING PERFORMANCE OF COHERENT OPTICAL RECEIVER
- Inventors
- Youn Chun Ju, Kim Duk Jun, Kwon Yong-Hwan, Choe Joong-Seon, Eun Soo Nam, Jong-Hoi Kim
- Application No.
- 13687741 (2012.11.28)
- Publication No.
- 20130156424 (2013.06.20)
- Registration No.
- 8929731 (2015.01.06)
- Country
- UNITED STATES
- Project Code
- 10MB7400, Coherenr optical OFDM technologies for next generation optical transport networks, Eun Soo Nam
- Abstract
- An apparatus for measuring performance of a coherent optical receiver includes a beam splitter splitting light into first and second paths, a first optical modulator modulating the first path light, a variable optical attenuator controlling an optical power of the first optical modulator, a first polarization controller transmitting a signal controlling polarization of an output of the variable optical attenuator to the coherent optical receiver, a second optical modulator modulating the second path light, a variable optical delay line delaying time of an output of the second optical modulator, a second polarization controller transmitting a signal controlling polarization of an output of the variable optical delay line to the coherent optical receiver, a network analyzer measuring performance of the coherent optical receiver and controlling the optical modulators, and a controller transmitting a control signal to the optical modulators.