光波导中脉冲信号的时空相干成形与检索
Spatio-temporal coherent molding and retrieval of pulsed signals in optical waveguides
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中文总结 AI 辅助
该研究针对耦合波导阵列中短脉冲相位混合导致的编码输入态难以检索的问题，提出基于局部相移的检索方案，经三维全波电磁模拟验证其高保真度，可用于超快相干编解码。
中文摘要 AI 辅助
光波导是高保真、长距离光通信的关键元件；耦合波导阵列可实现更高的信息密度、控制传播方向及信息编码。然而，对于包含多个波导模式频率的短脉冲，由于相对相位的混合，一旦这些信号经历相干传播，就难以检索到编码的输入态。本文提出一种概念，用于从时空传播态中高保真地提取经相位加密的输入信号。作为实现方案，建议采用耦合波导阵列，其检索机制由符合所确定检索概念的局部相移实现。对耦合介质波导中宽带光信号的三维全波电磁模拟证实了该方案的有效性及信息检索的高保真度，这指向其潜在应用，例如对印在脉冲序列上的信息进行超快相干编码与解码。
英文摘要
Optical waveguides are key elements for high fidelity, long distance optical communications. Coupled waveguide arrays allow for higher information density, steerting the propagation direction, and for encoding information. However, due to the mixing of relative phases for short pulses containing multiple waveguide-mode frequencies, a process for retrieving an encoded input state once these signals undergo coherent propagation remains elusive. A concept is presented to extract with high fidelity the phase-encrypted input signal from spatio-temporal propagated states. As a realization, an array of coupled waveguides is suggested with the retrieval mechanism being realized by local phase shifts that comply with the identified retrieval concept. Three dimensional full-wave electromagnetic simulations for broadband optical signals in coupled dielectric waveguides confirm the validity of the scheme and the high fidelity of information retrieval pointing to potential applications, for instance in ultrafast coherent coding and decoding of information imprinted on pulse sequences.
发表机构
- Free University of Tbilisi（第比利斯自由大学）
- Javakhishvili Tbilisi State University（贾瓦希什维利第比利斯国立大学）
- Nagoya Institute of Technology（名古屋工业大学）
- University of Duisburg-Essen（杜伊斯堡-埃森大学）
- Center for Nanointegration Duisburg-Essen (CENIDE)（杜伊斯堡-埃森纳米集成中心）
- The Pennsylvania State University（宾夕法尼亚州立大学）
- Martin-Luther-Universität, Halle-Wittenberg（哈雷-维滕贝格马丁路德大学）
机构由 AI 辅助整理，请以论文原文为准。
