Penalties from In-Band Crosstalk for Advanced Optical Modulation Formats

Abstract

We quantify, through simulations and experiments at 21.4 GBaud, the effect of in-band crosstalk on several advanced optical modulation formats, showing a 1-dB penalty at a bit-error ratio of 1×10−3 from a crosstalk of −18 dB, −24 dB, and −32 dB for QPSK, 16-QAM, and 64-QAM, respectively.