All-optical binary phase-coded UWB signal generation using DWDM-based multi-channel frequency discriminator

作者：Tan Long Sheng; Wang Fei^*; Ma Huan; Hu Qiang; Zhao Xiao Fang

来源：Optics Communications, 2014, 312: 153-158.

DOI：10.1016/j.optcom.2013.09.025

• Ultra-wideband
• Binary phase-code
• Frequency discriminator
• UWB-over-fiber
• Multi-user communications

A simple all -optical binary phase-coded ultra-wideband (UWB) signal generation scheme only using a DWDM-based multi-channel optical It discriminator is proposed and demonstrated. In the proposed scheme, the CW lights emitted horn a laser array are modulated in a phase modulator driven by electrical Gaussian pulses, and then are sent to a DWDM used as a multi-channel optical frequency discriminator, in which phase modulation to intensity modulation (PM-IM) conversions are performed, and by locating the phase-modulated light wavelengths at the positive or negative slopes of the DWDM transmission spectra, delaying and recombining each channel signal, binary phase-coded UWB codes are generated. We numerically demonstrate encode and decode process of binary phase-coded UWB signals with a code length of 4, operating at 625 Mbit/s. in addition, binary phase-coded UWB signal transmission in fiber link was also numerically investigated. Our proposed system has potential application in future multi-user UWB-over-fiber communication systems.

• 出版日期2014-2-1
• 单位重庆理工大学