J4 ›› 2017, Vol. 34 ›› Issue (6): 754-758.

• 波导与纤维光学 • 上一篇    

独特的单向光延迟复合波导

袁胜男,方云团   

  1. 江苏大学
  • 收稿日期:2016-09-07 修回日期:2016-09-28 出版日期:2017-11-28 发布日期:2017-12-11
  • 通讯作者: 方云团

Unique unidirectional optical delay waveguide

  • Received:2016-09-07 Revised:2016-09-28 Published:2017-11-28 Online:2017-12-11

摘要: 提出一种新的机制来实现光延迟。构造了含单向边界回路和单向空气波导的复合波导。当电磁波传播通过边界回路时,回路的单向传播和干涉相长效应使得电磁波绕过这些回路达到完美传输。这些回路由于增加了额外传播距离而导致光延迟。频域和时域仿真分别论证了完美传输和时间延迟功能。该复合波导的独特之处在于它拥有光延迟,单向传播和克服散射损耗的复合功能。

关键词: 干涉

Abstract: A new mechanism to achieve optical delay is proposed. A unidirectional compound waveguide with some unidirectional edge loops in the waveguide is constructed. The one-way transmission and the constructive interference effect make these loops have perfect transmission when electromagnetic waves propagate through them. These loops lead to an optical delay because of the enlarged propagation distance. Such waveguide has compound functions, such as one-way transmission, time delay and the function robust to scatter loss. The frequency-domain and time-domain simulations demonstrate the perfect transmission and the time delay functions, respectively. The unique waveguide has delay waveguide is that it can overcome the scatter loss.

Key words: interference