An intrinsic optical-fiber position sensor with schemes for temperature compensation and resolution enhancement

Chen, Shiping; Meggitt, B. T.; Palmer, A. W.; Grattan, Kenneth T. V.; Pinnock, R. A.

doi:10.1109/50.554376

Cited by 14 publications

(3 citation statements)

References 9 publications

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“…The orientation of birefringence in PMFs can be changed by external transverse forces, which leads to the phenomenon of polarization coupling. The coupling strength has a definite relationship with the external transverse forces; therefore, the distributed stress sensor can be realized by a polarization coupling detection system [2][3][4]. It is very important to detect 4 Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of the birefringence dispersion on the polarization coupling measurement in a long-distance high-birefringence fiber

Zhang

Chen

et al. 2012

Meas. Sci. Technol.

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Section: Introductionmentioning

confidence: 99%

Mitigation of the birefringence dispersion on the polarization coupling measurement in a long-distance high-birefringence fiber

Zhang

Chen

et al. 2012

Meas. Sci. Technol.

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“…Because the coupling intensity has a definite relationship with the external transverse forces, distributed stress and location sensing can be realized within a polarization coupling detection system [5][6][7]. There are several methods of measuring the distributed polarization coupling (DPC), including polarization optical time domain reflectometry [8], white light interferometry (WLI) [9,10], frequency modulated continuous wave, optical Kerr effect and synthesis of the optical coherence function.…”

Section: Introductionmentioning

confidence: 99%

Effects of angular misalignment in interferometric detection of distributed polarization coupling

Zhang¹,

Xu²,

Jia³

et al. 2009

Meas. Sci. Technol.

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White light interferometry is used to measure the distributed polarization coupling (DPC) in polarization-maintaining fibers (PMFs). By using a scanning Michelson interferometer to compensate the optical path difference (OPD) induced by the modal birefringence of PMFs, both the coupling strength and positions of the coupling points can be acquired. In ideal DPC measurement, the two reflective mirrors on the fixed and scanning arms of the Michelson interferometer are normal to each other. But in practice, the movable reflective mirror cannot be aligned normally to the fixed mirror exactly, which leads to an angular misalignment. The angular misalignment causes a variation of the OPD, which will reduce the fringe visibility. The theoretical simulation is investigated correspondingly. Consequently, the angular error leads to the miscalculation of the polarization coupling intensity. Based on the experimental results, a revised coupling strength calculation equation is proposed to minimize the influence of angular misalignment.

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“…In the measurement of polarization coupling using white light interferometry, the birefringence in PMFs is usually considered to be wavelength independent, and the difference between the two orthogonal eigenmodes of PMF is invariable 8,9 . The spatial resolution of the distributed stress sensor does not vary with the diversification of the force positions.…”

Section: Introductionmentioning

confidence: 99%

Influence of birefringence dispersion on a distributed stress sensor using birefringent optical fiber

Jing

Zhang

et al. 2009

Optical Fiber Technology

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Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP URL' above for details on accessing the published version and note that access may require a subscription. ABSTRACTDistributed stress sensor with a scanning Michelson white light interferometer can be used to detect stress distribution and its value by analyzing polarization mode coupling caused by stress field in PMFs (polarization maintaining fibers).In the measurement of polarization coupling, the birefringence in sensing fiber is usually considered to be wavelength-independent. The spatial resolution of the distributed stress sensor is invariable, when the optical source spectrum is given. In practical measurement, however, the birefringence in PMF is related with optical wavelength, the birefringence dispersion exists in PMF. Due to the birefringence dispersion, the spatial resolution of the distributed stress sensor descends obviously with the fiber length increasing. In this paper, the influence of external force position and optical source spectrum on spatial resolution in the distributed stress sensor is analyzed, while the birefringence dispersion is considered.

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An intrinsic optical-fiber position sensor with schemes for temperature compensation and resolution enhancement

Cited by 14 publications

References 9 publications

Mitigation of the birefringence dispersion on the polarization coupling measurement in a long-distance high-birefringence fiber

Mitigation of the birefringence dispersion on the polarization coupling measurement in a long-distance high-birefringence fiber

Effects of angular misalignment in interferometric detection of distributed polarization coupling

Influence of birefringence dispersion on a distributed stress sensor using birefringent optical fiber

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