Title :
Edge-Triggered Ultra-Wideband Pulse Shaper Using Polarization-to-Intensity Conversion
Author :
Zheng, Jianyu ; Zhu, Ninghua ; Du, Yuanxin ; Wang, Hui ; Wang, Lixian ; Liu, Jianguo
Author_Institution :
State Key Lab. on Integrated Optoelectron., Inst. of Semicond., Beijing, China
Abstract :
A simple edge-triggered and chirp-free ultra-wideband (UWB) monocycle pulse shaper was proposed and demonstrated utilizing a nonlinearly operated polarization-to-intensity converter, which mainly consists of a polarization modulator (PolM), two polarization controllers (PCs), and a time-delay device. As static phase shift of the incident light φ0=π, a 500-MHz monocycle pulse sequence with 10-dB bandwidth of 10 GHz and fractional bandwidth of 133% was obtained while a 250-MHz electrical quasi-square-wave was applied on the PolM. In addition, polarity switch of the UWB monocycle pulse can be realized by adjusting the bias voltage of the PolM or controlling the PC.
Keywords :
light polarisation; microwave photonics; optical modulation; optical pulse shaping; PC; PolM; bias voltage; edge triggered ultra wideband pulse shaper; electrical quasi-square-wave; frequency 10 GHz; frequency 250 MHz; monocycle pulse sequence; monocycle pulse shaper; nonlinearly operated polarization-to-intensity conversion; polarity switch; polarization controllers; polarization modulator; time delay device; Integrated optics; Modulation; Optical fibers; Optical filters; Optical polarization; Photonics; Microwave photonics; polarization-to-intensity conversion; ultra-wideband (UWB) over fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2216519
