Analysis of Induced-Birefringence Effects on Fiber Bragg Gratings

Gafsi, Rachid; El-Sherif, Mahmoud A.

doi:10.1006/ofte.2000.0333

Cited by 215 publications

(124 citation statements)

References 18 publications

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“…The transmission spectrum of a MLPFG strongly depends on the state of polarization (SOP) of the incident light applied to the MLPFG [6,7]. Therefore, for estimating the polarization dependence of resonance loss in MLPFGs, considering the optical sensors or devices based on MLPFGs is important.…”

Section: Introductionmentioning

confidence: 99%

Model for estimating the properties of mechanically induced long-period fiber grating based on polarization and applied pressure

et al. 2017

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This study proposes a model for estimating the properties of mechanically induced long-period fiber gratings (MLPFGs) based on polarization and applied pressure. The model arises from the linear relation between the applied pressure and coupling coefficients of MLPFGs through utilization of Jones matrix analysis. The transmission property of a fabricated MLPFG can be easily estimated using the relation between the applied pressure and coupling coefficients obtained from the measured spectra of MLPFGs. The estimated spectra around the resonance wavelengths based on our proposed model show good agreement with the measured ones. Keywords: long-period fiber grating, polarization dependence, applied pressure dependence Classification: Sensing strain sensitivity based on long-period gratings in B/Ge co-doped fiber," Electron. Lett., vol. 35, no. 8, pp. 661-663, 1999. DOI:10.1049 Y. Tsutsumi, M. Ohashi, and Y. Miyoshi, "Temperature sensing using an optical time domain reflectometer and mechanical long-period fiber gratings fabricated from a heat-shrinkable tube," IEICE Commun. References

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Section: Introductionmentioning

confidence: 99%

Model for estimating the properties of mechanically induced long-period fiber grating based on polarization and applied pressure

et al. 2017

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“…When the transverse loading is applied to the y-axis of 81°-TFG fiber as shown in Fig 4, the refractive index changes in the cross section due to the photo-elastic effect can be expressed by [15] …”

Section: Theory and Fabrication Of 45° -And 81° -Tfgsmentioning

confidence: 99%

All-Fiber Loading Sensor Based on a Hybrid 45° and 81° Tilted Fiber Grating Structure

et al. 2016

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Abstract-We experimentally demonstrate an all-fiber loading sensor system based on a 45°-and an 81°-tilted fiber grating (TFG). We have fabricated two TFGs adjacent to each other in a single fiber to form a hybrid structure. When the transverse load applied to the 81º-TFG, the light coupling to the two orthogonally polarized modes will interchange the power according to the load applied to the fiber, which provides a solution to measure the load. For real applications, we further investigated the interrogation of this all fiber loading sensor system using a low-cost and compact-size single wavelength source and a power meter. The experimental results have clearly shown that a low-cost high-sensitivity loading sensor system can be developed based on the proposed TFG configuration.

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“…It is noted that δ x is tensile stress which is positive while δ y is compressive stress which is negative therefore (δ x -δ y )>0 is always true. The photoelastic effect induced refractive index change in the fibre core area can be given by [22]: Where n x0 and n y0 are the effective refractive indices of the fibre without stress. C 1 and C 2 are the stress-optical coefficient, the relationship (C1-C2)>0 is always true for silica fibre [23].…”

Section: Etfg Based Loading Sensingmentioning

confidence: 99%