硅基集成无栅格波长选择光开关特性及实现的研究

Due to the rapid development of Internet and the Internet of Things as well as the population of the data services, the traditional optical network based on fixed grid technology is being challenged. As a result, the next generation optical network evolutes towards to a flexible，transparent and intelligent one. As a key component for realizing the elastic optical network, the gridless wavelength selective switch (WSS) is able to multiplex and switch variable spectral bands. However, with the rising complexity of the networking model, the number of the gridless WSS will be significantly increased, bringing the issues of cost, power consumption, and the size. To solve these issues, this project will propose a monolithic gridless WSS based on photonic integrated circuit, which is consisted of a 1×M/2 microring resonant wavelength demultiplexer assistant with interleaver, variable optical attenuator (VOA) array, phase modulator (PM) array, and a reconfigurable M×N cross-grid array of microring resonant wavelength multiplexer,then focus on the study of this gridless wavelength selective switch on SOI and demonstrate the design for a gridless 1×4 WSS by a 0.18 μm standard commercial CMOS line.The 1×4 WSS has 16 channels and the minimum channel spacing of 200 GHz. The device will find its application in the elastic optical network and the results of this research will provide scientific data to support our country mastering the key technology of the next generation optical network.

基于无栅格波长选择光开关（WSS）带宽可变光交换技术是下一代灵活、透明、智能化全光网络的关键技术之一。随着全光网络组网方式的复杂化，无栅格WSS的需求量也将大幅度增长，同时也带来了成本、功耗以及尺寸等方面问题。因此，本项目拟从未来平面集成的发展角度，着重对陡峭平坦通带、低损耗、低功耗及可扩展的硅基集成无栅格WSS特性及实现进行研究，并利用0.18 μm成熟的兼容CMOS工艺对16通道且最小通道间隔为50GHz的硅基集成无栅格1×4 WSS进行验证分析。具体内容包括：建立由基于interleaver级联1×M/2微环滤波器阵列模块、可变衰减器级联硅基波导相位调制器模块以及可重构的M×N微环阵列模块级联而成硅基集成无栅格WSS可扩展架构；研究分析该架构下无栅格WSS传输特性；采用垂直耦合系统验证无栅格1×4 WSS。本项目所形成的研究成果可为我国掌握下一代网络关键技术提供科学数据支持。

基于无栅格波长选择光开关（WSS）带宽可变光交换技术是下一代灵活、透明、智能化全光网络的关键技术之一。随着全光网络组网方式的复杂化，无栅格WSS 的需求量也将大幅度增长，同时也带来了成本、功耗以及尺寸等方面问题。因此，本项目从未来平面集成的发展角度出发，以微环为基本单元，设计了1×16微环阵列作为波分解复用器，并进一步提出硅基集成无栅格WSS可扩展架构，利用热光效应以及微环谐振腔传输谱的相干叠加特性和可调特性，实现16通道数的硅基集成无栅格1×4 WSS。本项目所形成的研究成果为我国掌握下一代网络关键技术提供科学数据支持。此外，为了提升通信容量，探索光互连网络多维复用技术实现，针对模式复用技术中的一些关键器件，包括模式复用/解复用器，模式间隔分离器等，开展相关的基础研究工作。项目发表期刊论文共计10篇，其中SCI收录7篇，EI收录2篇；国际学术会议邀请报告1篇；申请发明专利5项，其中授权1项；培养硕士研究生4人。