Sandwiched long-period gratings for simultaneous measurement of refractive index and temperature

被引：99

作者：

Zhang, AP ^{[1
]}

Shao, LY

Ding, JF

He, SL

机构：

[1] Zhejiang Univ, Dept Opt Engn, Ctr Opt & Electromagnet Res, Hangzhou 310027, Peoples R China

[2] Royal Inst Technol, Alfven Lab, Div Electromagnet Theory, S-10044 Stockholm, Sweden

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2005年 / 17卷 / 11期

关键词：

long-period fiber gratings; optical fiber sensor; refractive-index (RI) measurement; temperature sensor;

D O I：

10.1109/LPT.2005.857621

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A simultaneous measurement of external refractive-index (RI) and temperature is presented by using a sandwiched structure of long-period gratings (LPGs). An LPG pair with codirectional coupling between the guided mode and a low-order cladding mode acts as a temperature sensor with low RI sensitivity, whereas another in-between LPG which couples the guided mode with a higher order cladding mode performs as an RI sensing element. The experimental results show such an all-LPG structure is not only suitable for use as a compact temperature-compensated RI sensor, but also convenient for fabrication.

引用

页码：2397 / 2399

页数：3

共 13 条

[1] Sensing characteristics of a novel two-section long-period grating [J].

Allsop, T ;

Neal, R ;

Giannone, D ;

Webb, DJ ;

Mapps, DJ ;

Bennion, I .

APPLIED OPTICS, 2003, 42 (19) :3766-3771

[2] A high sensitivity refractometer based upon a long period grating Mach-Zehnder interferometer [J].

Allsop, T ;

Reeves, R ;

Webb, DJ ;

Bennion, I ;

Neal, R .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2002, 73 (04) :1702-1705

[3] Simultaneous measurement of temperature and external refractive index by use of a hybrid grating in D fiber with enhanced sensitivity by HF etching [J].

Chen, XF ;

Zhou, KM ;

Zhang, L ;

Bennion, I .

APPLIED OPTICS, 2005, 44 (02) :178-182

[4]

CRC, HDB CHEM PHYS

[5] Fiber-taper seeded long-period grating pair as a highly sensitive refractive-index sensor [J].

Ding, JF ;

Zhang, AP ;

Shao, LY ;

Yan, JH ;

He, SL .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2005, 17 (06) :1247-1249

[6]

GWANDU BAL, 2002, P IEEE, V2, P1032

[7] Fiber grating sensors [J].

Kersey, AD ;

Davis, MA ;

Patrick, HJ ;

LeBlanc, M ;

Koo, KP ;

Askins, CG ;

Putnam, MA ;

Friebele, EJ .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 1997, 15 (08) :1442-1463

[8] Dependence of fringe spacing on the grating separation in a long-period fiber grating pair [J].

Lee, BH ;

Nishii, J .

APPLIED OPTICS, 1999, 38 (16) :3450-3459

[9]

PATRICK HJ, 1997, P C LAS EL, V11, P420

[10] Sensitivity characteristics of long-period fiber gratings [J].

Shu, XW ;

Zhang, L ;

Bennion, I .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2002, 20 (02) :255-266

← 1 2 →