摘要
首次报道一种新颖的无色散4信道50GHz信道间隔的啁啾光纤Bragg光栅(CFBG)梳状滤波器,其突出特点是反射峰均匀性好、能无色散地实现光学梳状滤波。这里是采用了基于LP算法的IS光纤光栅设计技术,由目标反射谱计算出CFBG的折射率调制函数和啁啾分布;并用传输矩阵法分析所设计CFBG的反射谱、群时延曲线和群时延抖动。计算结果表明该CFBG达到各项设计指标要求。这种新颖的无色散CFBG梳状滤波器能广泛应用于光纤通信系统。
A novel zero dispersion chirped fiber Bragg grating (CFBG) comb filter with four- channel, 50GHz DWDM -channel separations is proposed for the first time. It is characterized by its symmetrical reflection peak and realizing wavelength filtration with zero dispersion. Layer - peeling inverse scattering technique is adopted to calculate the index modulating function and chirp parameter distribution of the CFBG. Reflection spectrum, group delay and group delay ripper are analyzed based on the method of transformation matrix. The calculation results show that this CFBG satisfied all requirements of designing target. This novel CFBG comb - filter could be widely applied in fiber communication system.
出处
《河南教育学院学报（自然科学版）》
2004年第2期30-33,共4页
Journal of Henan Institute of Education(Natural Science Edition)
关键词
光纤光栅
光栅设计
梳状滤波器
色散
fiber grating
grating design
comb - filter
dispersion
