Transmitter Mask Testing for 28 GBaud PM-QPSK
Henrik Eliasson, Mathias Westlund, Magnus Karlsson, Pontus Johannisson, Henrik Sunnerud, Peter A. Andrekson · 2013
We suggest a method for pass/fail testing of PM-QPSK transmitters. The test is based on mask testing with time-resolved EVM and accepts transmitters where individual impairments cause less than 0.5 dB OSNR penalty. The design of the test is performed by computer simulations followed by experimental verification of some key results.