Vectorial coupled-mode solitons in one-dimensional photonic crystals

• 来源期刊: 中国物理（英文版）
• 学科: 物理学
• 关键词: photonic crystals coupled-mode optical solitons
• 年，卷（期）: 2002,（9）
• 页码范围: 919-925
• 页数: 7页
• 分类号: O4
• 语种: 英文

摘要

We study the dynamics of vectorial coupled-mode solitons in one-dimensional photonic crystals with quadraticand cubic nonlinearities. Starting from Maxwell's equations, the vectorial coupled-mode equations for the envelopesof two fundamental-frequency optical mode and one low-frequency mode components due to optical rectification arederived by means of the method of multiple scales. A set of coupled soliton solutions of the vectorial coupled-modeequations is provided. The results show that a modulation of the fundamental-frequency optical modes occurs due tothe optical rectification field resulting from the quadratic nonlinearity. The optical rectification field disappears whenthe frequency of the fundamental-frequency optical fields approaches the edge of the photonic bands.