An overlay material was deposited by the Langmuir–Blodgett technique onto a single-mode optical fiber containing a long-period grating. The long-period grating exhibits characteristic attenuation bands in its transmission spectrum whose central wavelengths were observed to depend on the optical thickness of the overlay material, even for materials that have a refractive index higher than that of silica.
© 2002 Optical Society of America
(050.2770) Diffraction and gratings : Gratings
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(310.0310) Thin films : Thin films
(310.1860) Thin films : Deposition and fabrication
Nicholas D. Rees, Stephen W. James, Ralph P. Tatam, and Geoffery J. Ashwell, "Optical fiber long-period gratings with Langmuir—Blodgett thin-film overlays," Opt. Lett. 27, 686-688 (2002)