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Optics Letters

Optics Letters


  • Vol. 23, Iss. 9 — May. 1, 1998
  • pp: 697–699

Complex photosensitivity observed in germanosilica planar waveguides

M. V. Bazylenko, D. Moss, and J. Canning  »View Author Affiliations

Optics Letters, Vol. 23, Issue 9, pp. 697-699 (1998)

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Photosensitive effects distinguished as type I and type IIA photosensitivity within optical fibers were observed in a much more pronounced form within germanosilica waveguides deposited by hollow-cathode plasma-enhanced chemical-vapor deposition. With increasing exposure to 193-nm UV light, positive index changes greater than 2 × 10-3 were observed, followed by negative index changes greater than -5 × 10-3 . These behaviors are attributed to an increase in macroscopic polarizability and a reduction in material density, respectively. The negative index change is more temperature resistant and is fully annealed only at 900 °C, whereas the positive one is annealed at 500 °C.

© 1998 Optical Society of America

OCIS Codes
(230.7390) Optical devices : Waveguides, planar

M. V. Bazylenko, D. Moss, and J. Canning, "Complex photosensitivity observed in germanosilica planar waveguides," Opt. Lett. 23, 697-699 (1998)

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