UWB Monocycle Generation and Bi-Phase Modulation Based on Mach–Zehnder Modulator and Semiconductor Optical Amplifier

Author

Yu, Yuan ; Dong, Jianji ; Li, Xiang ; Zhang, Xinliang

Author_Institution

Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

4

Issue

2

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

327

Lastpage

339

Abstract

We propose and experimentally demonstrate an approach in generating a pair of polarity-reversed ultra-wideband (UWB) monocycle pulses by using a Mach-Zehnder modulator (MZM) and a semiconductor optical amplifier (SOA). The monocycle polarity is controlled by adjusting the bias voltage of the MZM to make the bias point located at the positive or the negative slope of the modulation curve. The generated UWB monocycles with different injection currents of SOA, different bias voltages of MZM, different optical pulse widths, and different optical carrier wavelengths are experimentally studied and analyzed. The bi-phase modulation (BPM) of monocycle pulse by applying nonreturn-to-zero (NRZ) data to the radio frequency (RF) port of MZM is also proposed and investigated.

Keywords

microwave photonics; optical communication equipment; optical modulation; semiconductor optical amplifiers; ultra wideband communication; Mach-Zehnder modulator; UWB monocycle generation; biphase modulation; nonreturn-to-zero data; polarity reversed ultrawideband monocycle pulse; radio frequency; semiconductor optical amplifier; Nonlinear optics; Optical modulation; Optical pulse generation; Optical pulses; Radio frequency; Semiconductor optical amplifiers; Mach–Zehnder modulator (MZM); Ultra-wideband (UWB); bi-phase modulation (BPM); counter-phase modulation; in-phase modulation; semiconductor optical amplifier (SOA);

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2011.2180014

Filename

6105502