TITLE

Athermal sensing with optical fibre Bragg gratings and long-period gratings

AUTHOR(S)
Swart, Pieter L.
PUB. DATE
May 2005
SOURCE
South African Journal of Science;May/Jun2005, Vol. 101 Issue 5/6, p278
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper presents a brief overview of two techniques to circumvent the large temperature sensitivities of fibre Bragg gratings and long-period gratings in sensing applications. The first technique employs the different temperature dependencies of the effective refractive indices of the core and cladding modes in two different types of optical fibre in a long-period grating Michelson interferometer. In the second sensor, both torsion and temperature measurements are possible with only two fibre Bragg gratings by exploiting the geometrical dependence of the strain in a shaft exposed to pure torque.
ACCESSION #
18484452

 

Related Articles

  • Quantum Key Distribution with Polarization-Entangled Multiphotons. Luo, Yuhui; Chan, Kam Tai // AIP Conference Proceedings;2004, Vol. 734 Issue 1, p303 

    Multiphoton entanglement in the same polarization has been theoretically shown to be obtainable by type-I spontaneous parametric down-conversion (SPDC), which can generate bright pulses more easily than type-II SPDC. A new quantum cryptographic protocol utilizing polarization pairs with the...

  • Reactive Current Sensor Based on Fiber Bragg Grating and a Piezo-Electric Transducer. Chin-Hsing Cheng; Kuo-Liang Cheng; Wen-Fung Liu // Fiber Optic Sensors & Systems;May2012, Vol. 26 Issue 5, p11 

    This paper demonstrates an optical fiber sensor using fiber Bragg grating (FBG) and a piezo-electrical transducer (PZT) to measure reactive current. Mounting an FBG on a PZT bar, a dynamic strain simulator was constructed. The equivalent voltage produced by reactive current applied on PZT was...

  • A fiber-optic evanescent wave sensor for dissolved oxygen detection based on novel hybrid fluorinated xerogels immobilized with [Ru(bpy)3]2+. Yan Xiong; Jing Xu; Jian-Wei Wang; Ya-Feng Guan // Analytical & Bioanalytical Chemistry;Jun2009, Vol. 394 Issue 3, p919 

    We have prepared a novel fiber-optic evanescent wave sensor (FEWS) for dissolved oxygen (DO) detection. The sensor fabrication was based on coating a decladded portion of an optical fiber with a microporous coating, which was prepared from 3,3,3-trifluoropropyltrimethoxysilane and...

  • RC-timed shutoff function uses op amp and momentary switch. Chenier, Glen // EDN Europe;Jun2012, p18 

    The article reports on how a handheld, battery-operated fiber finder measures the light escaping from an optical fiber when clamped in a V-shaped block under slight pressure. With no room on the front panel for a power switch, the design requires a sliding clamp mechanism to turn the unit on at...

  • COMPLEX modulation comes to OPTICAL FIBER. Rowe, Martin // Test & Measurement World;Mar2010, Vol. 30 Issue 2, p28 

    The article discusses the complex modulation that comes to optical fiber in the U.S. It states that the new modulation schemes are necessary to handle long-distance transmissions or the long-haul transmissions compared to short-haul communications or the client side. It mentions several...

  • Experimental technique for simultaneous measurement of absorption-, emission cross-sections, and background loss coefficient in doped optical fibers. Karimi, M.; Seraji, F. E. // Applied Physics B: Lasers & Optics;Jan2010, Vol. 98 Issue 1, p113 

    We report a new simple technique for the simultaneous measurements of absorption-, emission cross-sections, background loss coefficient, and dopant density of doped optical fibers with low dopant concentration. Using our proposed technique, the experimental characterization of a sample...

  • Apparatus for manufacturing optical fiber made of semi-crystalline polymer. Bodaghi, H. // Chemical Fibers International;Feb2004, Vol. 54 Issue 1, p23 

    This article provides a description of the apparatus for manufacturing optical fiber made of semi-crystalline polymer. An extruder heats polymer resin to produce molten polymer and supplies the molten polymer at a constant pressure. A gear pump is in fluid communication with the extruder,...

  • Dispersion and its Management in Single Mode Optical Fibres at High Speed Optical Networks. Sharma, R. L. // International Transactions in Applied Sciences;Oct2010, Vol. 2 Issue 4, p685 

    This paper deals with the dispersion in single mode optical fibre at high speed optical networks. Dispersion takes place at all speeds, and becomes predominant at high data rate. However, pulse spreading caused by chromatic dispersion, particularly, needs to be taken care of more seriously....

  • Investigation of the flow of molten tellurite glass in a double-crucible die. Shabarov, V. V.; Snopatin, G. E.; Churbanov, M. F. // Theoretical Foundations of Chemical Engineering;Apr2010, Vol. 44 Issue 2, p206 

    The viscoplastic flow of molten tellurite glass realized during the process of the drawing of an optical fiber through a double-crucible die was numerically investigated. The procedure for the computational experiment and the results of the simulation, including those obtained under local...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics