title: Implementation of wavelength reusing upstream service based on distributed intensity conversion in ultrawideband-over-fiber system.
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 1.25 Gbit/s over 10 km fiber is achieved. The power penalty resulting from the interference of downstream signals is less than 0.3 dB.
authors.affiliation: The State Key Laboratory on Integrated Optoelectronics, Institution of Semiconductors, Chinese Academy of Sciences, Beijing, China.
authors.forename: Jianyu
authors.initials: J
authors.lastname: Zheng
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Lixian
authors.initials: L
authors.lastname: Wang
authors.forename: Ninghua
authors.initials: N
authors.lastname: Zhu
authors.forename: Jianguo
authors.initials: J
authors.lastname: Liu
authors.forename: Sunlong
authors.initials: S
authors.lastname: Wang