Determination of thermo-optic coefficient in liquids with fiber Bragg grating refractometer

被引：96

作者：

Kamikawachi, R. C. ^{[1
]}

Abe, I. ^{[2
]}

Paterno, A. S. ^{[3
]}

Kalinowski, H. J. ^{[1
]}

Muller, M. ^{[1
]}

Pinto, J. L. ^{[2
]}

Fabris, J. L. ^{[1
]}

机构：

[1] Univ Tecnol Fed Parana, BR-80230901 Curitiba, Parana, Brazil

[2] Univ Aveiro, P-3810193 Aveiro, Portugal

[3] Univ Tecnol Fed Parana, Cornelio Procopio, Parana, Brazil

来源：

OPTICS COMMUNICATIONS | 2008年 / 281卷 / 04期

关键词：

etched fiber Bragg grating; refractive index sensitivity; thermal sensitivity; thermo-optic effect;

D O I：

10.1016/j.optcom.2007.10.023

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work the thermo-optic coefficients of hydrocarbon samples have been determined using etched fiber Bragg grating (FBG), where the effective refractive index (RI) of the fundamental mode becomes dependent on the surrounding refractive index. The technique is based on the cross-sensitivity that the device presents to temperature and refractive index. The thermal response of FBG is characterized for samples with different refractive indices. The inherent temperature effects are distinguished from the RI, due to induced effects changes in the refractive index caused by the thenno-optic effect. For comparison purposes, literature data has been used to work with such parameters for water. The parameter obtained for ethanol (-3.99 +/- 0.20) x 10(-4) degrees C-1 at 1550 nm is in close proximity with the literature data, -4 x 10(-4) C-1, in the visible range. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：621 / 625

页数：5

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