IN-LINE FIBER ETALON (ILFE) FIBEROPTIC STRAIN SENSORS

被引：97

作者：

SIRKIS, J

BERKOFF, TA

JONES, RT

SINGH, H

KERSEY, AD

FRIEBELE, EJ

PUTNAM, MA

机构：

[1] SFA INC,LANDOVER,MD 20785

[2] USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 1995年 / 13卷 / 07期

关键词：

D O I：

10.1109/50.400690

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：

This paper describes an optical fiber interferometer that uses a short segment of silica hollow-core fiber spliced between two sections of single-mode fiber to form a mechanically robust in-line optical cavity. The hollow-core fiber is specifically manufactured to have an outer diameter that is equal to the outer diameter of the single mode lead fibers, thereby combining the best qualities of existing intrinsic and extrinsic Fabry-Perot sensors. Uniaxial tension and pure bending strength tests are used to show that the new configuration does not diminish the axial strength of bare fiber and reduces the bending strength by 17% at most, Similar tests confirm that the fiber sensor has 1.96% strain to failure, Axisymmetric finite element analysis is used to investigate the reliability of the in-line etalon when it is embedded in a typical thermoset composite, and parametric studies are performed to determine the mechanically optimal cavity length. The fiber optic sensor is tested using low coherence interferometry with pseudo-heterodyne demodulation under strain and temperature fields, The strain response compares well with resistance strain gages, and the temperature tests confirm the low thermal apparent strain of this sensor.

引用

页码：1256 / 1263

页数：8

共 18 条

[1] Kersey A.D., Jackson D.A., Corke M., A simple fiber Fabry-Perot sensor, Proc. Int. Conf. Opt. Tech. in Process Control, pp. 55-57, (1983)
[2] Measures R.M., Hogg D., Turner R.D., Varis T., Giliberto M.J., Structurally integrated fiber optic strain rosette, Fiber Opt. Smart Structures and Skins, SPIE, 986, pp. 32-42, (1988)
[3] Lee C.E., Taylor H.F., Interferometric optical fiber sensors using internal mirrors, Electron. Lett., 24, pp. 193-194, (1988)
[4] Lee C.E., Alcoz J.J., Yeh Y., Gibler W.N., Atkins R.A., Taylor H.F., Optical fiber Fabry-Perot sensors for smart structures, J. Smart Structures, 1, 2, pp. 123-127, (1992)
[5] Kist R., Drope S., Wolfelschnelder H., Fiber-Fabry-Perot (FFP) thermometer for medical applications, Proc. 2nd Int. Conf. on Opt. Fiber Sensors, (1984)
[6] Lesko J.J., Case S.W., Fogg B.R., Carman G.P., Embedded Fabry-Perot fiber optic strain rosette sensor for internal stress state assessment, Proc. 7th Ann. Conf. of the ACS, pp. 909-918, (1992)
[7] Paul C., Sendecky G.P., Carman G.P., Detection of the onset of damage using an extrinsic Fabry-Perot interferometric strain sensor (EFPI-SS), Proc. Smart Sensing, Processing, and Instrum., pp. 154-164, (1993)
[8] Claus R.O., Gunther M.F., Wang A.B., Murphy K.A., Sun D., Extrinsic Fabry-Perot sensor for structural evaluations, Applicat. of Fiber-Opt. Sensors in Eng. Mechanics, (1993)
[9] Carman G.P., Murphy K., Schidt C.A., Elmore J., Extrinsic Fabry-Perot interferometer sensor survivability during mechanical fatigue cycling, Proc. 1993 SEM Spring Conf., pp. 1037-1079, (1993)
[10] Sirkis J., Putman M., Berkoff T.A., Kersey A.D., Brennan D.D., Friebele E.J., In-line fiber etalon for strain measurement, Opt. Lett., 18, 22, pp. 1973-1975

← 1 2 →