Tunable optical fiber filters with magnetic fluids

被引：58
作者：
Liao, WJ [1 ]
Chen, XF [1 ]
Chen, YP [1 ]
Pu, SK [1 ]
Xia, YX [1 ]
Li, Q [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Inst Opt & Photon, Dept Phys, State Key Lab Fiber Opt Local Area Commun Network, Shanghai 200240, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 15期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2103401
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This letter presents a tunable optical fiber filter based on a long-period grating (LPG) by applying a magnetic field on a magnetic nanoparticle fluid. The movement of the magnetic fluid jacket surrounding the fiber cladding controlled by an applied magnetic field results in a variation of the external index between that of the magnetic fluid and air. As a result, the attenuation band of the LPG is shifted. The observed center wavelength shift of the attenuation band is as large as 7 nm, which can cover eight dense wavelength division multiplexing channels (100 GHz channel spacing). Repeatable transport of a magnetic fluid at a switching rate of 1 Hz is demonstrated. (C) 2005 American Institute of Physics.
引用
收藏
页码：1 / 3
页数：3
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