Characterization of photoinduced birefringence change in optical fiber rocking filters

Psaila, D. C.; Ouellette, Francois; Sterke, C. Martijn de

doi:10.1063/1.116224

Cited by 17 publications

(9 citation statements)

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“…We know at present that the photoinduced anisotropy is observed in many materials such as halide crystals including photographic materials, 36,37 homogeneous and inhomogeneous oxide glasses, [38][39][40] and organic materials. 41,42 The mechanisms seem to consist of electronic and structural processes, the latter ranging between defect generation in relatively rigid materials 36,38 and molecular orientation in flexible organic materials.…”

Section: Methodsmentioning

confidence: 99%

Mechanism of photoinduced anisotropy in chalcogenide glasses

1996

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Structural and optical anisotropies have been investigated in some chalcogenide glasses exposed to illumination of linearly polarized light. X-ray diffraction patterns of illuminated As 2 S 3 manifest a structural modification at ϳ1 Å Ϫ1. Photoinduced birefringence in As 2 S 3 becomes maximal at some temperature, which is higher for illumination with a lower photon energy. The photoinduced birefringence becomes greater in the order of As 2 Se 3 , As 2 S 3 , and Se, which is the same with the order of the natural birefringence in the corresponding crystals. These observations suggest that the photoinduced anisotropy arises from orientation of quasicrystalline clusters. The model is compared with photoinduced anisotropies observed in other materials.

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Section: Methodsmentioning

confidence: 99%

Mechanism of photoinduced anisotropy in chalcogenide glasses

1996

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“…It was already demonstrated that for filters with a period of a few millimeters fabricated in birefringent microstructured fibers (MOFs), several resonances can be obtained in the useful spectral range from 0.6 to 1.6 μm [3][4][5]. In the published literature one can find different methods of rocking filter fabrication, including periodic point-by-point fiber exposure to an external UV beam [6][7][8][9], producing photo-induced changes in birefringence in germanium doped fibers, or periodic twisting of the fiber heated by a fusion arc [3] and CO 2 laser beam [10][11][12]. The rocking filters can also be fabricated by internal light exposure at Ar laser wavelengths of 488.0 or 514.5 nm [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Higher-order rocking filters induced mechanically in fibers with different birefringence dispersion

et al. 2014

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We studied the transmission characteristics of higher-order rocking filters induced mechanically in birefringent microstructured fibers and standard elliptical core fibers with varying spectral dependence of phase modal birefringence. We demonstrated the effect of birefringence dispersion on polarization mode coupling induced by a point-like force. We also investigated the spectral dependence of the resonance depth and force-induced resonance wavelength shift in mechanical rocking filters. The observed phenomena were explained by a numerical model linking the spectral dependence of the polarization mode coupling coefficient with the dispersion of intrinsic fiber birefringence and applied force.

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“…The photoinduced anisotropy, originally discovered in photographic Ag-halide crystals by Weigert, 1 has attracted considerable interests recently in a variety of materials, such as organic polymers including liquid crystals, 2-9 oxide and chalcogenide glasses, [10][11][12][13][14][15] and phase-separated systems. [16][17][18][19] In the glasses, for instance, linearly polarized light can align some atomic bonds or atomic clusters, and the direction can further be altered by successive illumination having different polarizations.…”

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confidence: 99%