激光与光电子学进展, 2015, 52 (2): 020603, 网络出版: 2015-01-19   

基于微环谐振器和窄带滤波器的全光归零到非归零码型转换 下载: 528次

All-Optical RZ-to-NRZ Format Conversion Based on Micro-Ring Resonator and Narrow Bandpass Filter
作者单位
北方工业大学电子信息工程学院, 北京 100144
摘要
基于信号频谱变换的原理,利用微环谐振器的梳状谱传输特性,辅助以窄带滤波器,将全光归零(RZ)码信号的频谱包络转变为较理想的非归零(NRZ)码信号的频谱包络,从而实现RZ 码到NRZ 码的码型转换。详细研究了转换后的NRZ 信号眼图质量与设备因素,如窄带滤波器的选择、微环谐振器的耦合条件以及输入信号RZ 码占空比的关系。结果表明窄带滤波器为2 阶巴特沃斯滤波器时,微环谐振器的耦合条件以及RZ 码占空比对码型转换效果的影响较小。另外,通过调整微环谐振器的尺寸,设计的码型转换器能与不同速率的系统相兼容,能更好地适应未来光网络的发展。
Abstract
Based on signal spectral transforming principle, an all-optical return-to-zero (RZ) to non-return-tozero (NRZ) format conversion is realized by using a micro-ring resonator with the comb transmission spectrum and a narrow bandpass filter. Influences of devices′ parameters, such as different narrow bandpass filters, coupling conditions of micro-ring resonator and duty ratio of the RZ input signal, on eye-diagram quality of converted NRZ signal are investigated in detail. Results demonstrate that 2-order Butterworth filter is expected to decrease the influences of coupling conditions and the duty ratio of RZ signal on the conversion performances. In addition, by adjusting the ring-resonator size, the designed RZ-to-NRZ format converter is compatible with system having several bit rates signals. This will be better adapt to the development of future optical networks.<网络出版日期.2015-01-09
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董小伟, 谢媛, 刘文楷. 基于微环谐振器和窄带滤波器的全光归零到非归零码型转换[J]. 激光与光电子学进展, 2015, 52(2): 020603. Dong Xiaowei, Xie Yuan, Liu Wenkai. All-Optical RZ-to-NRZ Format Conversion Based on Micro-Ring Resonator and Narrow Bandpass Filter[J]. Laser & Optoelectronics Progress, 2015, 52(2): 020603.

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