Effect of macro-bending on resonant wavelength and intensity of long-period gratings in photonic crystal fiber

被引：21

作者：

He, Zonghu ^{[1
]}

Zhu, Yinian ^{[1
]}

Du, Henry ^{[1
]}

机构：

[1] Stevens Inst Technol, Dept Chem Biomed & Mat Engn, Hoboken, NJ 07030 USA

来源：

OPTICS EXPRESS | 2007年 / 15卷 / 04期

关键词：

D O I：

10.1364/OE.15.001804

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the spectral characteristics of CO2-laser inscribed long-period gratings ( LPGs) in endlessly single mode photonic crystal fiber ( PCF) subject to macro-bending. The coupling modes as a result of bending were studied by examining the shifts of resonant wavelengths, the splits of attenuation bands, and the variation in coupling strength of the transmission spectra. A bending coefficient of similar to 27.9 nm.m was determined in the PCF at 1800 rotational orientation relative to the point of laser inscription in the curvature range from 2.6 m(-1) to 3.5 m(-1). Compared with conventional fiber LPGs fabricated using the same method, the PCF-based LPGs possess higher sensitivity both to bending and orientation, making them promising for sensor applications. (c) 2007 Optical Society of America.

引用

页码：1804 / 1810

页数：7