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.
National Laboratory for Information Science and Technology, Department of Electronic Engineering,Tsinghua University, Beijing 100084, China.
Shiguang
S
Wang
Hongwei
H
Chen
Ming
M
Xin
Minghua
M
Chen
Shizhong
S
Xie