Homodyne crosstalk in optical cross-connects

Abstract

Homodyne crosstalk in multiwavelength optical cross-connects (OXC) is studied. The bit error rate (BER) and power penalty due to the incoherent and coherent crosstalk are derived for IM-DD transmission. The impact of the WDM wavelength number, same-source crosstalk number, the cross-connecting state of the OXC, the polarization angle difference between the crosstalk contribution and the signal on the crosstalk performance is discussed.