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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 19 — Oct. 1, 2005
  • pp: 2536–2538

Cladding mode reorganization in high-refractive-index-coated long-period gratings: effects on the refractive-index sensitivity

Andrea Cusano, Agostino Iadicicco, Pierluigi Pilla, Luigi Contessa, Stefania Campopiano, Antonello Cutolo, and Michele Giordano  »View Author Affiliations


Optics Letters, Vol. 30, Issue 19, pp. 2536-2538 (2005)
http://dx.doi.org/10.1364/OL.30.002536


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Abstract

We theoretically and experimentally investigated the reorganization of cladding modes in high-refractive-index- (HRI-) coated long-period gratings (LPGs), focusing on the influence of refractive-index sensitivity. When azimuthally symmetric nanoscale HRI coatings are deposited along LPG devices, a significant modification of the distribution of cladding modes occurs, depending on the layers' features (refractive index and thickness) and on the external refractive index. In particular, if these parameters are properly chosen, a transition between cladding modes and overlay modes occurs. Numerical and experimental effects of the mode transition on the sensitivity of the surrounding refractive index are described.

© 2005 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(160.5470) Materials : Polymers

ToC Category:
Fiber Optics and Optical Communications

Citation
Andrea Cusano, Agostino Iadicicco, Pierluigi Pilla, Luigi Contessa, Stefania Campopiano, Antonello Cutolo, and Michele Giordano, "Cladding mode reorganization in high-refractive-index-coated long-period gratings: effects on the refractive-index sensitivity," Opt. Lett. 30, 2536-2538 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-19-2536

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