Application of the multi-channel fiber Bragg grating to the high-speed and broadband optical communication system

多通道光纤布拉格光栅在高速宽带光通信系统中的应用

基本信息

批准号：
18560332
负责人：
LI Hongpu
金额：
$ 2.35万
依托单位：
Shizuoka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560332/
关键词：
Electronic Device Applied Optics Quantum Optics Fiber Optical Components WDM Optical Communication System Fiber Bragg Grating Broad-band Dispersion Compensator

项目摘要

In this study, we have presented a theory for the phase-only sampled FBG and demonstrate that a sampled FBG of Nchannels would require √<N> times higher the maximum refractive index-modulation than that of the single-channel FBG. A novel continuous phase-only sampling function capable of producing up to 81-channel FBG with excellent channel uniformity and high in-band energy efficiency is presented and optimized by using the simulated annealing algorithm. In order to fabricate this kind of FBGs with a conventional side-writing phase-mask technique, both the diffraction effects and fabrication tolerance of the phase-shifted phase mask have also been addressed. Compared with the numerical results, a 45-channel (spacing of 100 GHz) and, an 81-channel (spacing of 50 GHz) phase-only sampled linearly chirped FBG are successfully demonstrated.We have presented a novel method for multi-channel FBG design, which enables us to design any kind of multi-channel FBGs where the spectrum response of … More each channel could be either identical or non-identical. Particularly, 9-channel nonlinearly chirped FBG used as simultaneously dispersion and dispersion slope compensator has been demonstrated.We have demonstrated a novel method to measure the chromatic dispersion of a multi-channel fiber Bragg grating (FBG), which is based on an all-fiber asymmetrical Sagnac loop interferometer (ASLI) proposed Theoretical analyses to this proposed approach are presented in details. With this method, the chromatic dispersion and dispersion slope of a 51-channel FBG are simultaneously measured. The experimental results agree well with the ones obtained by using the general phase-shift method (PSM). This method has the advantages of simple configuration, low-cost, and high tolerance for the characteristics of FBG.We have presented a novel approach for the reflection equalization of a phase-only sampled fiber Bragg grating (FBG), where the grating is specially designed as a simultaneous dispersion and dispersion-slope compensator with channels up to 51. The sampling-function used is given with an analytical form with a linearly-chirped sampling period and is optimized by using the simulated annealing algorithm. Less

在本研究中，我们提出了仅相位采样 FBG 的理论，并证明 N 通道采样 FBG 需要比单通道 FBG 高 √<N> 倍的最大折射率调制。为了制造这种具有良好通道均匀性和高带内能量效率的FBG，提出并通过使用模拟退火算法进行优化，能够产生最多81通道的FBG。与传统侧写相位掩模技术相比，相移相位掩模的衍射效应和制造公差也得到了解决，与45通道（间隔100 GHz）和81通道的数值结果进行了比较。（间隔50 GHz）仅相位采样线性啁啾FBG已成功演示。我们提出了一种多通道FBG设计的新方法，使我们能够设计任何类型的多通道FBG每个通道的频谱响应可以相同或不相同的 FBG 特别是用作色散和色散斜率补偿器的 9 通道非线性调频光纤光栅。我们已经演示了一种测量色散的新方法。基于全光纤非对称萨格纳克环形干涉仪（ASLI）的多通道光纤布拉格光栅（FBG）的提出对该方法的理论分析详细介绍了该方法同时测量了51通道FBG的色散和色散斜率，实验结果与使用通用相移方法（PSM）获得的结果非常吻合。我们提出了一种仅相位采样光纤布拉格光栅（FBG）反射均衡的新方法，其中光栅被专门设计为同时色散和色散斜率补偿器，通道多达 51 个。所使用的采样函数以具有线性啁啾采样周期的解析形式给出，并通过使用模拟退火算法进行优化。