Tunable optical fiber filters with magnetic fluids

被引：59

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.

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页码：1 / 3

页数：3

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