用于DWDM骨干网光子处理的Sagnac环谐振器

Carmen Vaizquez, Julio Montalvo, P. C. Lallana
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引用次数: 2

摘要

本文分析了基于环形谐振器(RR)的光结构在反馈路径中带有一个内部Sagnac (SG)环路,在DWDM骨干网中用于滤波和色散管理的数字传输系统的幅值响应和色散特性。提出了关于二次色散和幅度失真的结构设计问题。RR+SG复合滤波器通过调节光耦合器的耦合系数,提供了振幅和色散峰的频率可调性,而无需使用集成的热光学移相器或基于电流注入的移相器。该配置可以作为一般基于r的设计和合成体系结构的附加结构,允许色散补偿器的带宽增加和灵活性。复合滤波器的性能由两个串级RR和一个RR+SG滤波器组成,为现有的多通道SMF骨干链路在高比特率下工作提供了更紧凑和有效的解决方案。为证明该方案的可行性,报道了基于聚合物技术的集成环形谐振器的设计指南。
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Ring Resonators with Sagnac Loops for Photonic Processing in DWDM Backbone Networks
In this paper, optical configurations based on ring resonators (RR) with an internal Sagnac (SG) loop in the feedback path, are analyzed in terms of their amplitude response and dispersive properties for filtering and chromatic dispersion managing in digital transmission systems over amplified single- mode fiber (SMF) spans in DWDM backbone networks. Design issues for the architecture as regards quadratic dispersion and magnitude distortion are provided. The RR+SG compound filter provides frequency tunability of the amplitude and dispersion peaks by adjusting a coupling coefficient of an optical coupler, with no need for using integrated thermo-optic nor current- injection based phase shifters. The configuration can be employed as an additional structure for a general RR-based design and synthesis architecture, allowing bandwidth increase of dispersion compensators and flexibility. The performance of a compound filter consisting of a two RR in series stage and a RR+SG filter are reported as a more compact and effective solution for existing multi-channel SMF backbone links operating at high bit rates. Design guidelines of an integrated ring resonator based on polymer technology for showing feasibility of the proposal is reported.
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