Torsion Sensing Characteristics of Mechanically Induced Long-Period Holey Fiber Gratings

Ceballos-Herrera, Daniel E.; Torres-Gómez, I.; Martı́nez-Rios, A.; García, Luis Ángel Granda; Sánchez-Mondragón, J.

doi:10.1109/jsen.2010.2042951

Cited by 41 publications

(19 citation statements)

References 20 publications

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“…To design and manufacture an LPFBG torsion sensor, in principle, any known LPFBG inscription method can be used. These include methods of LPFBG fabrication with ultraviolet (UV)-light [33,34], electric arc induced perturbations [35], mechanical corrugation [36], mechanical load (microbending) [37,38,39,40] and application of CO 2 laser induced perturbation [41,42,43,44,45,46,47,48,49,50,51,52,53]. …”

Section: Sensor Based On Modulation Of Radial Shear Stress Distribmentioning

confidence: 99%

Fiber-Optic Sensors for Measurements of Torsion, Twist and Rotation: A Review

Budinski

Đonlagić

2017

Sensors

113

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Optical measurement of mechanical parameters is gaining significant commercial interest in different industry sectors. Torsion, twist and rotation are among the very frequently measured mechanical parameters. Recently, twist/torsion/rotation sensors have become a topic of intense fiber-optic sensor research. Various sensing concepts have been reported. Many of those have different properties and performances, and many of them still need to be proven in out-of-the laboratory use. This paper provides an overview of basic approaches and a review of current state-of-the-art in fiber optic sensors for measurements of torsion, twist and/or rotation.

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Section: Sensor Based On Modulation Of Radial Shear Stress Distribmentioning

confidence: 99%

Fiber-Optic Sensors for Measurements of Torsion, Twist and Rotation: A Review

Budinski

Đonlagić

2017

Sensors

113

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“…Although LPFGs were originally proposed for such purposes as band-rejection filters [1], nowadays, they are capable of a much broader scope of operation in all-fiber devices. LPFGs have been studied for applications in optical fiber polarizers [2], optical sensors [3][4][5], and optical switching [6,7], among others. They have been used in the reshaping gain spectra of active fiber devices like erbium-doped fiber amplifiers (EDFAs) and fiber lasers.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Mueller matrix of UV-inscribed long-period fiber grating

et al. 2014

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An explicit method for determination of the Mueller matrix elements of a commercial long-period fiber grating inscribed with ultraviolet CW laser irradiation (UV-LPFG) is presented. From the Mueller matrix obtained for such UV-LPFG, the full polarimetric response of the grating was found. Our polarimetric analysis was focused mainly on the polarization-dependent loss and other polarimetric properties, such as the polarizance, the depolarization index, and the diattenuation parameters. The full polarimetric analysis allows us to obtain more complete information than the usually reported ones, in which only two orthogonal linear polarizations are considered; for example, with our analysis, we prove that a small depolarization effect is inherent in UV-LPFG and that attenuation depends on the polarization state. This additional polarimetric information could be useful to control the output LPFG signal, for instance, for the realization of wavelength switchable or Q-switched fiber lasers, among other applications.

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“…Many fiber-optic torsion sensors have been proposed, including interferometers formed with special fibers (such as hollow-core photonic bandgap fibers [1] , highly birefringent photonic crystal fibers [2,3] , and twin-core fibers [4] ) and a range of wavelength-encoded grating sensors [5][6][7][8][9][10] . However, many of these sensors cannot tell the sense (clockwise or counterclockwise) of the applied torsion [1][2][3][4][5][6] . Torsion sensors that employ specially made long-period fiber gratings (LPFGs) can tell the sense of the applied torsion, but the broadband nature of the LPFG limits the resolution of the measurement [7][8][9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

Fiber ring laser incorporating a pair of rotary long-period fiber gratings for torsion measurement

et al. 2012

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We demonstrate a fiber ring laser for high-resolution torsion measurement, where the laser cavity consists of a Mach-Zehnder interferometer (MZI) formed with a pair of long-period fiber gratings written in a twisted single-mode fiber (SMF) by a CO 2 laser. The emitting wavelength of the laser provides a measure of the rate of the torsion applied to the grating pair, while the direction of the wavelength shift indicates the sense direction of the applied torsion. The narrow linewidth and the large side-mode suppression ratio of the laser can provide a much more precise measurement of torsion, compared with passive fiber-optic torsion sensors. The torsion sensitivity achieved is 0.084 nm/(rad/m) in the torsion range ±100 rad/m, which corresponds to a torsion resolution of 0.12 rad/m, assuming a wavelength resolution of 10 pm for a typical optical spectrum analyzer.

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Torsion Sensing Characteristics of Mechanically Induced Long-Period Holey Fiber Gratings

Cited by 41 publications

References 20 publications

Fiber-Optic Sensors for Measurements of Torsion, Twist and Rotation: A Review

Fiber-Optic Sensors for Measurements of Torsion, Twist and Rotation: A Review

Determination of the Mueller matrix of UV-inscribed long-period fiber grating

Fiber ring laser incorporating a pair of rotary long-period fiber gratings for torsion measurement

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