Demonstration of Long-Period-Grating Efficient Couplings with an External Medium of a Refractive Index Higher than that of Silica
Applied Optics, Vol. 37, Issue 31, pp. 7223-7228 (1998)
http://dx.doi.org/10.1364/AO.37.007223
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Abstract
We discuss the behavior of the transmission spectra of a long-period grating (LPG) with an external medium of refractive index higher than that of silica. We studied the evolution of the features of LPG’s surrounded by several liquid media for several kinds of fiber. The study demonstrated that the behavior depends strongly on the fiber type. Efficient couplings (efficiency greater than 50%) have been obtained with an external medium of a refractive index larger than that of silica. This result indicates that a LPG can operate with surrounding materials of a refractive index higher than that of silica, promising new applications for LPG’s as active optical filters.
© 1998 Optical Society of America
[Optical Society of America ]
OCIS Codes
(030.4070) Coherence and statistical optics : Modes
(050.1950) Diffraction and gratings : Diffraction gratings
(060.2310) Fiber optics and optical communications : Fiber optics
(160.2290) Materials : Fiber materials
Citation
Olivier Duhem, Jean-Fraņois Henninot, Marc Warenghem, and Marc Douay, "Demonstration of Long-Period-Grating Efficient Couplings with an External Medium of a Refractive Index Higher than that of Silica," Appl. Opt. 37, 7223-7228 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-31-7223
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