Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Dopants concentration effects on the wavelength shift of long-period fiber gratings used as liquid level detectors

Not Accessible

Your library or personal account may give you access

Abstract

Two liquid level sensors based on different long-period fiber gratings are proposed and compared. The long-period gratings have the same characteristics (length, grating period) but are fabricated in different optical fibers (photosensitive B-Ge codoped optical fibers with different dopants concentrations). The principle of this type of sensor is based on the refractive index sensitivity of long-period fiber gratings. By monitoring the resonant wavelength shifts of a given attenuation band, one can measure the immersed lengths of long-period fiber gratings and then the liquid level. The levels of two different solutions are measured. The maximum shift (7.69 nm) of the investigated resonance wavelength was observed in LPG1 (fabricated in Fibercore PS1250/1500). By controlling the fiber dopants concentrations one can improve the readouts of a fiber-optic liquid level sensor based on long-period fiber gratings.

© 2011 Optical Society of America

PDF Article
More Like This
Temperature and Refractive Index Measurements Using Long-Period Fiber Gratings Fabricated by Femtosecond Laser

Yongqin Yu, Jiarong Zheng, Kai Yi, Shuangchen Ruan, Chenlin Du, Jianhui Huang, and Wansheng Zhong
83071W Asia Communications and Photonics Conference and Exhibition (ACP) 2011

Temperature compensated long-period gratings for biochemical sensing applications

Shaorui Gao, Yebin Zhang, and A. Ping Zhang
83110A Asia Communications and Photonics Conference and Exhibition (ACP) 2011

Cascaded Long-Period Fiber Grating Liquid Level Sensor at the Dispersion Turning Point

Kangkang Lu, Chen Jiang, and Yunqi Liu
T2F.4 Optoelectronics and Communications Conference (OECC) 2021

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved