Title :
Methods for Ultra-Wideband Pulse Generation Based on Optical Cross-Polarization Modulation
Author :
Chen, Hongwei ; Chen, Minghua ; Wang, Tianliang ; Li, Mo ; Xie, Shizhong
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Abstract :
Optical methods for different type ultra-wideband (UWB) pulse generation based on cross-polarization modulation (CPM) are proposed and demonstrated in this paper. Two polarity-reverse pulses can be obtained by CPM and birefringence time delay to form a monocycle pulse. A semiconductor optical amplifier (SOA) is placed after the monocycle pulse process for doublet pulse generation. These two kinds of pulses can be employed in single-band impulse radio UWB (IR-UWB) systems. Two kinds of multi-band UWB pulses can be generated based on monocycle pulse train with proper apodization profiles, realized by hybrid photonic microwave filter and synchronous polarization modulation respectively. Experimental results show that these pulses can be used in multi-band UWB (MB-UWB) over fiber systems.
Keywords :
birefringence; microwave photonics; optical fibre polarisation; optical modulation; optical pulse generation; radio-over-fibre; semiconductor optical amplifiers; ultra wideband communication; birefringence time delay; doublet pulse generation; hybrid photonic microwave filter; monocycle pulse process; optical cross-polarization modulation; radio over fiber systems; semiconductor optical amplifier; single-band impulse radio UWB systems; synchronous polarization modulation; ultrawideband pulse generation; Optical filters; Optical modulation; Optical pulse generation; Optical pulses; Pulse amplifiers; Pulse generation; Pulse modulation; Semiconductor optical amplifiers; Stimulated emission; Ultra wideband technology; Cross-polarization modulation; photonic microwave filter; radio over fiber; ultra-wideband;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.927616
