Refractive-Index Insensitive Long-Period Fiber Gratings Point-by-Point Inscribed by CO₂ Laser for Fiber Sensors and Lasers

Qun Han; Xinwei Lan; Jie Huang; Tao Wei; Zhan Gao; Hai Xiao

doi:10.1117/12.909105

Refractive-Index Insensitive Long-Period Fiber Gratings Point-by-Point Inscribed by CO₂ Laser for Fiber Sensors and Lasers

Qun Han
, Xinwei Lan
, Jie Huang
, Tao Wei
, Zhan Gao
, Hai Xiao

Electrical and Computer Engineering

Missouri University of Science and Technology

Research output: Contribution to journal › Article › peer-review

Abstract

This paper reports a long-period fiber gratings(LPFG) fabricated on a double-clad fiber (DCF) by the CO ₂ laser point-by-point technique. The LPFG is tested by measuring temperature and refractive index (RI) of different liquids. The results show that the LPFG inscribed on the DCF has no measurable sensitivity to external RI but has a high sensitivity for temperature. The measured temperature sensitivity is ~0.11 nm/°C, about 10 times higher than that of conventional FBGs. Such LPFGs can be used as a modulator in fiber lasers or temperature/strain sensors in applications where the surrounding RI is prone to variation, such as simultaneous measurement of the temperature and RI of chemical reactions.

Original language	American English
Journal	Proceedings of SPIE, Optical Components and Materials IX
Volume	8257
DOIs	https://doi.org/10.1117/12.909105
State	Published - Jan 1 2012

Keywords

Diffraction gratings
Double-clad fiber
Fiber Sensor
Fiber lasers
Fiber optic sensors
High sensitivity
Lasers
Long period fiber grating
Measuring temperature
Refractive index, Fibers
Simultaneous measurement
Temperature sensitivity, Carbon dioxide

Disciplines

Electrical and Computer Engineering

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https://doi.org/10.1117/12.909105

Cite this

@article{347c8d2c579e4c58ad7fef15526a9d97,

title = "Refractive-Index Insensitive Long-Period Fiber Gratings Point-by-Point Inscribed by CO₂ Laser for Fiber Sensors and Lasers",

abstract = " This paper reports a long-period fiber gratings(LPFG) fabricated on a double-clad fiber (DCF) by the CO 2 laser point-by-point technique. The LPFG is tested by measuring temperature and refractive index (RI) of different liquids. The results show that the LPFG inscribed on the DCF has no measurable sensitivity to external RI but has a high sensitivity for temperature. The measured temperature sensitivity is \textasciitilde{}0.11 nm/°C, about 10 times higher than that of conventional FBGs. Such LPFGs can be used as a modulator in fiber lasers or temperature/strain sensors in applications where the surrounding RI is prone to variation, such as simultaneous measurement of the temperature and RI of chemical reactions.",

keywords = "Diffraction gratings, Double-clad fiber, Fiber Sensor, Fiber lasers, Fiber optic sensors, High sensitivity, Lasers, Long period fiber grating, Measuring temperature, Refractive index, Fibers, Simultaneous measurement, Temperature sensitivity, Carbon dioxide",

author = "Qun Han and Xinwei Lan and Jie Huang and Tao Wei and Zhan Gao and Hai Xiao",

year = "2012",

month = jan,

day = "1",

doi = "10.1117/12.909105",

language = "American English",

volume = "8257",

journal = "Proceedings of SPIE, Optical Components and Materials IX",

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TY - JOUR

T1 - Refractive-Index Insensitive Long-Period Fiber Gratings Point-by-Point Inscribed by CO₂ Laser for Fiber Sensors and Lasers

AU - Han, Qun

AU - Lan, Xinwei

AU - Huang, Jie

AU - Wei, Tao

AU - Gao, Zhan

AU - Xiao, Hai

PY - 2012/1/1

Y1 - 2012/1/1

N2 - This paper reports a long-period fiber gratings(LPFG) fabricated on a double-clad fiber (DCF) by the CO 2 laser point-by-point technique. The LPFG is tested by measuring temperature and refractive index (RI) of different liquids. The results show that the LPFG inscribed on the DCF has no measurable sensitivity to external RI but has a high sensitivity for temperature. The measured temperature sensitivity is ~0.11 nm/°C, about 10 times higher than that of conventional FBGs. Such LPFGs can be used as a modulator in fiber lasers or temperature/strain sensors in applications where the surrounding RI is prone to variation, such as simultaneous measurement of the temperature and RI of chemical reactions.

AB - This paper reports a long-period fiber gratings(LPFG) fabricated on a double-clad fiber (DCF) by the CO 2 laser point-by-point technique. The LPFG is tested by measuring temperature and refractive index (RI) of different liquids. The results show that the LPFG inscribed on the DCF has no measurable sensitivity to external RI but has a high sensitivity for temperature. The measured temperature sensitivity is ~0.11 nm/°C, about 10 times higher than that of conventional FBGs. Such LPFGs can be used as a modulator in fiber lasers or temperature/strain sensors in applications where the surrounding RI is prone to variation, such as simultaneous measurement of the temperature and RI of chemical reactions.

KW - Diffraction gratings

KW - Double-clad fiber

KW - Fiber Sensor

KW - Fiber lasers

KW - Fiber optic sensors

KW - High sensitivity

KW - Lasers

KW - Long period fiber grating

KW - Measuring temperature

KW - Refractive index, Fibers

KW - Simultaneous measurement

KW - Temperature sensitivity, Carbon dioxide

UR - https://scholarsmine.mst.edu/ele_comeng_facwork/3313

UR - https://doi.org/10.1117/12.909105

U2 - 10.1117/12.909105

DO - 10.1117/12.909105

M3 - Article

VL - 8257

JO - Proceedings of SPIE, Optical Components and Materials IX

JF - Proceedings of SPIE, Optical Components and Materials IX

ER -

Refractive-Index Insensitive Long-Period Fiber Gratings Point-by-Point Inscribed by CO₂ Laser for Fiber Sensors and Lasers

Abstract

Keywords

Disciplines

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