It has been shown that the central wavelengths of the attenuation bands seen in the transmission spectrum of a long period gratings (LPG) exhibit a dependence on both the thickness and refractive index of thin film overlay materials. The form of the wavelength shift has been discussed in qualitative terms, and is predicted by a simple model.
Optical fiber long period gratings with thin film overlays
2002-01-01
284188 byte
Conference paper
Electronic Resource
English
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