Optical ultra-wideband pulse generation and distribution using a dual-electrode Mach-Zehnder modulator

被引：1
|
作者：
Li, Jing [1 ,2 ]
Ning, Tigang [1 ,2 ]
Pei, Li [1 ,2 ]
Qi, Chunhui [1 ,2 ]
机构：
[1] Beijing Jiaotong Univ, Inst Lightwave Technol, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Key Lab All Opt Network & Adv Telecommun Network, EMC, Beijing 100044, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2010年 / 8卷 / 02期
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
Light modulation - Gaussian distribution - Electrodes - Ultra-wideband (UWB) - Optical signal processing - Light modulators;
D O I：
10.3788/COL20100802.0138
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel approach to generate and distribute ultra-wideband (UWB) pulses in optical domain is investigated. In this proposed scheme, a dual-electrode Mach-Zehnder modulator (DE-MZM) is biased at its quadrature point so as to realize the linear response. Then the intensity of output optical field can be assumed to the subtraction of two input Gaussian pulses. If the input Gaussian pulses are with the same sharp parameters but different time delays, a quasi-monocycle-waveform UWB signal can be generated. If the input Gaussian pulses are with different amplitudes and full-width at half-maximum (FWHM), a quasi-doublet-waveform UWB signal can be generated. A transmission of the UWB signals through a 25-km single mode fiber is carried out successfully. The results in both temporal and frequency domains are also presented.
引用
收藏
页码：138 / 141
页数：4
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