光波分-功分集成器件技术研究.pdf

摘要 摘要 随着信息化技术迅猛发展, 波分复用光纤通信与光接入网技术已成为构建5G 通信、 互联网、物联网、大数据中心底层信息传输链路的核心手段。高速宽带光接入系统急需 光波分-功分相结合的集成器件，且要求器件对高速光脉冲具有良好的传输响应特性。然 而，作为常用的波分复用/解复用器件，阵列波导光栅（AWG ）需遵守罗兰曲面原理制 备，单只器件尺寸较大，难以与其它功能单元集成。因此，必须探索将AWG 与M ×N 光分路器融合，形成高集成度、高性能AWG-Splitter 芯片的关键技术。 本文首先提出了一种U 型的AWG 结构，该结构改变常规AWG 输入、出波导向外 扩散的方式，将输入、出波导端向阵列波导内扩散，呈“U ”型状，有效减小了器件尺 寸。同时在U 型AWG 器件的输出端口加上功分单元，构成单只AWG-Splitter 集成芯 片。接着，仿真分析了该AWG-Splitter 集成芯片的光波工作模式与传输特性，分别讨论 了U 型AWG 对几种不同类型高速光脉冲、不同脉冲调制方式的传输响应，分析了AWG 阵列波导数、信道间隔、阵列波导间距等参数的变化对脉冲传输情况的影响。最后，对 优化设计出的AWG-Splitter 集成器件进行了实验研究。委托流片制备出AWG-Splitter 芯 片，封装获得AWG-Splitter 集成器件。搭建了AWG-Splitter 集成器件测试系统，测试结 果表明，器件工作带宽、插入损耗、回波损耗、方向性、均匀性和偏振相关损耗等技术 指标与仿真结果符合，且满足国标要求。器件还通过了江苏省质量技术监督通信产品质 量检验站的检测。 关键词：光波分-功分集成器件，阵列波导光栅（AWG ），传输响应 I Abstract Abstract With the rapid development of information technology, wavelength division multiplexing optical fiber communication and optical access network technology have become the core means of constructing 5G communication, Internet, Internet of Things, and the underlying information transmission link of big data centers. The high-speed broadband optical access system urgently needs an integrated device combining optical wavelength division and power division, and requires the device to have good transmission response characteristics for high- speed optical pulses. However, as a common wavelength division multiplexing/demultiplexing device, arrayed waveguide gratings(AWG) are prepared according to the Roland surface principle. The single device is large in size and difficult to integrate with other functional units. Therefore, it is necessary to explore the key technology of integrating AWG with M×N optical splitter to form a highly