Title :
Photonic Generation of 3-D UWB Signal Using a Dual-Drive Mach-Zehnder Modulator
Author :
Pan Cao ; Xiaofeng Hu ; Jiayang Wu ; Liang Zhang ; Xinhong Jiang ; Yikai Su
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
We propose and experimentally demonstrate a new method to generate a 3-D ultrawideband (UWB) signal by utilizing a dual-drive Mach-Zehnder modulator (DDMZM). Three degrees of freedom of the generated 3-D UWB signal are pulse position, pulse phase, and pulse amplitude. In this scheme, each radio frequency (RF) port of the DDMZM is modulated by a combination of two encoded signals with different amplitudes. By properly adjusting the amplitudes of the encoded signals and the bias voltages of the two RF ports, a 5-Gb/s 3-D UWB signal with a central frequency of 3.5 GHz and a 10-dB fractional bandwidth of 163% is successfully generated by using only a single DDMZM.
Keywords :
optical communication equipment; optical modulation; phase modulation; radio-over-fibre; ultra wideband communication; 3D UWB signal; DDMZM; RF ports; bias voltages; bit rate 5 Gbit/s; dual-drive Mach-Zehnder modulator; encoded signals; frequency 3.5 GHz; photonic generation; pulse amplitude; pulse phase; pulse position; radiofrequency port; ultrawideband signal; Optical amplifiers; Optical fibers; Phase modulation; Photonics; Radio frequency; Ultra wideband technology; Ultra wideband (UWB); pulse modulation; three-dimensional (3-D);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2326550
