A novel multifunctional optical fiber sensor based on FBG and fiber optic coupler

An optical fiber sensor based on attenuated total reflectance (ATR) for extraction chemical information from highly scattering turbid materials has been evaluated. The influence of particles on bulk absorption and ATR transmitted spectra of micron-sized graphite flakes and spherical glassy carbon suspensions were investigated. The ATR transmitted spectra of coiled fiber-optic sensor in those suspensions with various concentrations are insensitive to scattering of suspended particles, especially for graphite flake suspensions. The reason for different influence of graphite flakes and spherical glassy carbon particles suspensions on e ATR spectra analyzed. This study demonstrates that fiber-optic sensor based on ATR technique is a feasible technique in application for monitoring turbid suspensions.

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Electroluminescent optical fiber sensor for detection of a high intensity electric field

Photonics Letters of Poland ◽

10.4302/plp.v12i1.980 ◽

2020 ◽

Vol 12 (1) ◽

pp. 19

Author(s):

Tadeusz Piotr Pustelny

Keyword(s):

Electric Field ◽

Optical Fiber ◽

Fiber Optics ◽

Fiber Optic ◽

Light Emission ◽

Fiber Type ◽

Optical Fiber Sensor ◽

Fiber Sensor ◽

Sensor Technology ◽

Experimental Investigations

On-line testing of high power electromagnetic devices is one of the most important problems of modern industrial metrology. In the paper, the results of experimental investigations of the electric field optical fiber sensor based on the electroluminescent phenomena are presented. The electro¬luminescent effect is observed in some composite semicon¬ductors, among others in zinc sulfide ZnS crystals. In our investigations, the used ZnS crystal was doped with copper Cu atoms as activators. The concentration of activator in the ZnS crystal was about 5.10-4 [g/g]. According to plans of investi¬gations of the elaborated electroluminescent sensor, the spectral properties as well as the intensity of light emission in sinusoidal alternating electric field were tested.Full Text: PDF References:K.T.V. Grattan, Fiber Optic Fluorescence Thermometry, Chapman and Hall, London, 1996 [CrossRef]K. Kyuma, S. Tai, T. Sawada, "Fiber-optic instrument for temperature measurement", J. Quntum. Electronics, 73(3), 1997 [CrossRef]A. Brief, J. Chem. Educ., 88(6), 731 (2011). [CrossRef]T. Pustelny, B. Pustelny, "Investigation of electroluminophores for their practical application in optical fibre sensor technology", Opto-Electronics Rev.,10(3), 193 (2002). [CrossRef]A.Wrzesinska, Photo- and electroluminophore, Wroclaw, PWN Press, 1988, (in polish) [DirectLink]K.A. Franz, W.G. Kehr, "Luminescent Materials", Ullmans Encyclopedie of Industral Chemistry, Wiley-VCH, Veinhen, 2008 [CrossRef]A.G. Milnes, Deep Impurities In Semiconductors, A Willey-Interscience Publication, Toronto, 1993 [DirectLink]M. Aven, J.S. Prener, Physics and Chemistry of II-VI Compounds, North-Holland Publishing Company - Amsterdam, 1993 [DirectLink]P.K. Cheo, Fiber Optics Devices and Systems, Prentice-Hall, 1985 [CrossRef]D. Randall, Fluorescence and Phosphorescence, Grown, Oxford, 2007. [CrossRef]M. Koen, Photoconductivity of Semiconductors, Edited by Parks, New York, 1996 [CrossRef]K.R. Murphy, C.A. Stedmon, Annal. Methods, 6(3), 658, (2014) [CrossRef]T. Pustelny, K. Barczak, K. Gut, J. Wojcik, "Special optical fiber type D applied in optical sensor of electric currents", Optica Applicata, 34(4), 531 (2004). [DirectLink]K. Barczak, T. Pustelny, D. Dorosz, J. Dorosz, "Polarization maintaining fibers for application in magnetic field measurements", Europ. Phys. Journal: S.T., 154, 11, (2008) [CrossRef]

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Optical Fiber Sensor for Liquid Refractive Index Based on Fiber Optic Taper

Acta Optica Sinica ◽

10.3788/aos20092907.1956 ◽

2009 ◽

Vol 29 (7) ◽

pp. 1956-1960

Author(s):

熊贻坤 Xiong Yikun ◽

黄旭光 Huang Xuguang

Keyword(s):

Refractive Index ◽

Optical Fiber ◽

Fiber Optic ◽

Optical Fiber Sensor ◽

Fiber Sensor

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Fiber Optic Systems: Optical Fiber Sensor Technology and Windows

Smart Materials ◽

10.1201/9781420043730-19 ◽

2008 ◽

pp. 237-270

Keyword(s):

Optical Fiber ◽

Fiber Optic ◽

Optical Fiber Sensor ◽

Fiber Sensor ◽

Sensor Technology ◽

Optic Systems

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Fiber-Optic Sensor Technology and Combinatorial Chemistry

MRS Proceedings ◽

10.1557/proc-804-jj7.7 ◽

2003 ◽

Vol 804 ◽

Author(s):

Peter Geissinger ◽

Barry J. Prince ◽

Nadejda T. Kaltcheva ◽

Maureen J. Prince ◽

Alan W. Schwabacher

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Combinatorial Chemistry ◽

Fiber Optic ◽

Optical Fiber Sensor ◽

Combinatorial Libraries ◽

Fiber Optic Sensor ◽

Fiber Sensor ◽

Sensor Technology ◽

Compound Libraries

ABSTRACTOur recently introduced “Fiber-Optic Combinatorial Chemistry” technique combines combinatorial synthetic methods and optical fiber sensor technologies. Our one-dimensional combinatorial chemistry method allows for synthesis of large compound libraries in a linear format, for example in the cladding of optical fibers. Subjecting these libraries to assays that indicate positive identification of a library member by the binding of a fluorescent group, produces, in effect, an optical fiber sensor array. The location of a particular fluorescent region along the optical fiber can be determined through the optical time-of-flight technique, in which laser pulses propagating through the fiber core probe through their evanescent fields the fluorescent properties of the compounds located in the fiber cladding. It is a virtue of our combinatorial synthetic procedure that with the location of a compound on the fiber, its synthetic history is immediately known. We demonstrated that limitations on the spatial resolution of compounds along the fiber due to the excited state lifetimes of the fluorescent marker molecules can be overcome by the use of a second fiber - evanescently coupled to the first one - as an optical delay.The existing claddings of optical fibers severely restrict the range of chemistries for the synthesis of combinatorial libraries. Therefore, in order to make our method more generally applicable, the existing fiber cladding has to be replaced by a porous material that can act as solid support for reactions and at the same time preserve the optical guiding conditions of the fiber. In this contribution we discuss the requirements for such a replacement cladding and evaluate the general suitability of a functionalized candidate material.

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