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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 20, Iss. 8 — Aug. 1, 2002
  • pp: 1463–

Numerical Analysis of the Contribution of the Transverse Asymmetry in the Photo-Induced Index Change Profile to the Birefringence of Optical Fiber

Kokou Dossou, Sophie LaRochelle, and Marie Fontaine

Journal of Lightwave Technology, Vol. 20, Issue 8, pp. 1463- (2002)


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Abstract

The birefringence of an optical fiber resulting from an asymmetry of the index profile is numerically evaluated using a finite-element method with a full-vectorial formulation. Such asymmetric index profiles, assumed to vary exponentially across the fiber core, could be induced during the writing of fiber Bragg gratings with UV side-exposure techniques. The results reveal that the birefringence is a quadratic function of the effective index change. An asymmetry coefficient near 0.4 µm-1 maximizes the birefringence. The calculated photo-induced birefringence is negligible if the index change is lower than 5 ×10-4. However, the birefringence can reach 5 ×10-6 for large values of index change. The numerical method presented could be applied to the modeling of other asymmetric index profiles.

[IEEE ]

Citation
Kokou Dossou, Sophie LaRochelle, and Marie Fontaine, "Numerical Analysis of the Contribution of the Transverse Asymmetry in the Photo-Induced Index Change Profile to the Birefringence of Optical Fiber," J. Lightwave Technol. 20, 1463- (2002)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-20-8-1463


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