Abstract

We propose and demonstrate a simple scheme for generating the ultrawideband (UWB) signals and reusing the wavelength for upstream service simultaneously by using a distributed polarization modulation-to-intensity modulation convertor. Through adjusting the static phase difference between transverse electric and transverse magnetic modes of the optical carrier (OC) and the angle between the polarization direction of the OC and the principal axis of the polarizers, the UWB doublet-like signals were generated. Meanwhile, the error-free transmission of the upstream signals with bit rate of 1.25Gbit/s over 10 km fiber is achieved. The power penalty resulting from the interference of downstream signals is less than 0.3 dB.

© 2013 Optical Society of America

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