摘要
提出并分析验证了一种光电混合结构的光时钟分频/倍频器系统,该系统通过光电转换后的反馈调制来实现光时钟信号的分频/倍频操作。分频过程类似于D触发器的输出信号反馈控制输入端信号的原理;在不更换器件的情况下,简单改变反馈顺序,还可以实现光时钟信号的倍频。从时/频域的角度分别讨论了分频/倍频的原理,在实验上验证了所提方案的可行性,从一路10GHz的光时钟信号出发分别得到了5GHz的光、电分频时钟信号和20GHz的光时钟倍频信号。该系统结构简单,性能稳定,对光信号的波长透明且无需光、电滤波,并同时具有光、电信号输出,因此可以方便地配合后续信号处理环节,具有良好的实用性。
A scheme of optoelectronic hybrid optical clock frequency divider/multiplier is proposed and analyzed. The optical clock signal frequency divider/multiplier is realized by feedback modulation after the photoelectric conversion. The procedure of the frequency divider is similar to the principle of D flip-flop, in which the output signal is used to control the input signal. The frequency multiplication of optical clock is also implemented by simply changing the feedback sequence without replacing devices. According to signal processing in the time/frequency domain, the principle of frequency divider/multiplier is discussed respectively and the feasibility of the proposed scheme is demonstrated. In the experimental demonstration, 5 GHz optical/electric clock signal and 20 GHz optical clock signal are generated from a 10 GHz optical clock signal. The system has simple configuration, stable performance. It is transparent to the wavelength of the optical signal, and doesn＇t need the optical, electrical filter. In this system, the optical/electrical signal can be output simultaneously, therefore it has good practicability and can easily cooperate with the subsequent signal processor.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2013年第3期77-83,共7页
Acta Optica Sinica
基金
国家自然科学基金(61061004)
教育部新世纪优秀人才支持计划(NCET-10-0099)
贵州省优秀青年科技人才专项基金(2009)09
贵州大学创新项目(理工2012022)资助课题
关键词
光纤光学
时钟分频
时钟倍频
反馈调制
马赫-曾德尔调制器
fiber optics
optical clock frequency dividing
optical clock frequency multiplication
feedback modulation
Mach-Zehnder modulator
