Optical ultra-wide-band pulse bipolar and shape modulation based on a symmetric PM-IM conversion architecture.
A simple and feasible technique for ultra-wide-band (UWB) pulse bipolar modulation (PBM) and pulse shape modulation (PSM) in the optical domain is proposed and demonstrated. The PBM and PSM are performed using a symmetric phase modulation to intensity modulation conversion architecture, including a couple of phase modulators and an optical bandpass filter (OBPF). Two optical carriers, which are separately phase modulated by two appropriate electrical pulse patterns, are at the long- and short-wavelength linear slopes of the OBPF spectrum, respectively. The high-speed PBM and PSM without limit of chip length, polarity, and shape are implemented in simulation and are also verified by experiment.
Wang
Shiguang
S
National Laboratory for Information Science and Technology, Department of Electronic Engineering,Tsinghua University, Beijing 100084, China.
Chen
Hongwei
H
Xin
Ming
M
Chen
Minghua
M
Xie
Shizhong
S