Title :
High-Speed Photonic Power-Efficient Ultra-Wideband Transceiver Based on Multiple PM-IM Conversions
Author :
Zhou, Enbo ; Xu, Xing ; Lui, King-Shan ; Wong, Kenneth Kin-Yip
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
We experimentally demonstrate a novel photonic ultra-wideband (UWB) transceiver with pulse spectral efficiency of 50.97% and transmission speed up to 3.125 Gb/s. The UWB generator only consists of a highly nonlinear fiber (HNLF) and a commercial arrayed-waveguide grating (AWG). By using the concept of multiple cross-phase modulation in the HNLF and multiple phase modulation to intensity modulation conversions in the AWG, a power-efficient UWB pulse is combined with incoherent summation of two asymmetric monocycle pulses with inverted polarities. Benefiting from the ultra-fast response of fiber nonlinearities in the HNLF, on-off keying encoded UWB signals generated at 781.25 Mb/s, 1.5625 Gb/s, and 3.125 Gb/s are all error-free transmitted through a 22.5-km single-mode fiber (SMF) with power penalties lower than 1 dB. The bit-error rate is directly measured on down-converted baseband signals by using optical full rectification and electrical low-pass filtering technologies. The measured electrical spectra before and after 22.5-km SMF link transmission both fully comply with the spectral mask specified by the U.S. Federal Communications Commission (FCC) without power attenuation.
Keywords :
encoding; error statistics; intensity modulation; low-pass filters; phase modulation; transceivers; ultra wideband communication; UWB generator; arrayed-waveguide grating; asymmetric monocycle pulses; bit-error rate; cross-phase modulation; electrical low-pass filtering technology; highly nonlinear fiber; intensity modulation conversion; on-off keying encoding; optical full rectification; photonic power-efficient ultra-wideband transceiver; single-mode fiber; FCC; High speed optical techniques; Nonlinear optics; Optical attenuators; Optical pumping; Optical receivers; Probes; Microwave photonics; nonlinear signal processing; ultra-wideband (UWB)-over-fiber; wireless technology;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2010.2074550