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Optics Letters

Optics Letters


  • Vol. 25, Iss. 16 — Aug. 15, 2000
  • pp: 1153–1155

Bragg gratings in ternary SiO2:SnO2:Na2O optical glass fibers

G. Brambilla, V. Pruneri, L. Reekie, C. Contardi, D. Milanese, and M. Ferraris  »View Author Affiliations

Optics Letters, Vol. 25, Issue 16, pp. 1153-1155 (2000)

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Bragg gratings have been written in an optical fiber with a core made from ternary SiO2: SnO2: Na2O glass and a SiO2 cladding. The presence of Na2O allows for higher concentrations of SnO>2 , which are believed to be responsible for the photorefractive response of this composition. In these preliminary experiments significant refractive-index modulations, up to 6.2×10-4 , have been achieved with a 248-nm excimer laser and a phase mask to write gratings for reflectivity at ~1.5µm . The induced refractive-index changes show enhanced temperature stability, and there is no sign of any erasure up to temperatures exceeding 600 °C.

© 2000 Optical Society of America

OCIS Codes
(060.2290) Fiber optics and optical communications : Fiber materials
(060.2400) Fiber optics and optical communications : Fiber properties
(160.5320) Materials : Photorefractive materials

G. Brambilla, V. Pruneri, L. Reekie, C. Contardi, D. Milanese, and M. Ferraris, "Bragg gratings in ternary SiO2:SnO2:Na2O optical glass fibers," Opt. Lett. 25, 1153-1155 (2000)

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