具有两个光栅的少模光纤中具有平坦或偏移带边的慢光

Slow light with flat or offset band edges in few-mode fiber with two gratings.

作者信息

Sukhorukov Andrey A, Handmer C J, de Sterke C Martijn, Steel M J

机构信息

ARC Center of Excellence for Ultrahigh-bandwidth Devices for Optical Systems, Nonlinear Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia.

出版信息

Opt Express. 2007 Dec 24;15(26):17954-9. doi: 10.1364/oe.15.017954.

DOI:10.1364/oe.15.017954

PMID:19551091

Abstract

We consider mode coupling in multimode optical fibers using either two Bragg gratings or a Bragg grating and a long-period grating. We show that the magnitude of the band edge curvature can be controlled leading to a flat, quartic band-edge or to two band edges at distinct, nonequivalent k-values, allowing precise control of slow light propagation.

摘要

我们考虑使用两个布拉格光栅或一个布拉格光栅与一个长周期光栅来研究多模光纤中的模式耦合。我们表明，能带边缘曲率的大小可以得到控制，从而产生一个平坦的四次能带边缘，或者在不同的、不等价的k值处产生两个能带边缘，这使得慢光传播能够得到精确控制。