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Optics Letters

Optics Letters


  • Vol. 28, Iss. 23 — Dec. 1, 2003
  • pp: 2327–2329

Thermal stresses in optical waveguides

M. Huang  »View Author Affiliations

Optics Letters, Vol. 28, Issue 23, pp. 2327-2329 (2003)

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Birefringence of optical waveguides is closely related to the anisotropy of thermal stresses in the core. Closed-form solutions for estimating the thermal stresses in the cladding layers and in the core of an embedded channel waveguide are presented. The solutions are verified by finite-element simulation. It is found that the thermal stress in the core in the direction perpendicular to the wafer cannot be ignored, and one can tune the core stress anisotropy in the plane normal to the light-propagation direction by varying the thermal-expansion mismatch between the upper cladding layer and the substrate.

© 2003 Optical Society of America

OCIS Codes
(160.6030) Materials : Silica
(230.4170) Optical devices : Multilayers
(230.7380) Optical devices : Waveguides, channeled
(230.7390) Optical devices : Waveguides, planar
(260.1440) Physical optics : Birefringence
(260.5430) Physical optics : Polarization

M. Huang, "Thermal stresses in optical waveguides," Opt. Lett. 28, 2327-2329 (2003)

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