Chinese Optics Letters, 2010, 8 (2): 138, Published Online: Mar. 5, 2010
Optical ultra-wideband pulse generation and distribution using a dual-electrode Mach-Zehnder modulator Download: 846次
光纤通信 准高斯单周脉冲 准高斯双胶合透镜脉冲 双电极马赫曾德尔调制器 超宽带 060.0060 Fiber optics and optical communications 060.2330 Fiber optics communications 060.2360 Fiber optics links and subsystems 060.5625 Radio frequency photonics
Abstract
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.
Jing Li, Tigang Ning, Li Pei, Chunhui Qi. Optical ultra-wideband pulse generation and distribution using a dual-electrode Mach-Zehnder modulator[J]. Chinese Optics Letters, 2010, 8(2): 138.