The Study of the Resonant Wavelengths of Long-period Fiber Grating with Langmuir-Blodgett Thin-film Overlay

This paper theoreticall analyes spectral characteristics of the resonant wavelength of long-period fiber gratings varying with the change of the ambient refractive index in detail.The analytical results agree with the relationship between the thickness of the film and the resonant wavelength of long-period fiber grating with Langmuir-Blodgett thin-film overlay well.