Virginia TechWang, ZhiyongHeflin, James R.Stolen, Rogers H.Ramachandran, Siddharth2014-02-032014-02-032005-05-01Wang, ZY; Heflin, JR; Stolen, RH; et al., "Highly sensitive optical response of optical fiber long period gratings to nanometer-thick ionic self-assembled multilayers," Appl. Phys. Lett. 86, 223104 (2005); http://dx.doi.org/10.1063/1.19407350003-6951http://hdl.handle.net/10919/25260Ionic self-assembled multilayers deposited on long period fiber gratings (LPGs) yield dramatic resonant-wavelength shifts, even with nanometer-thick films. Fine control of the refractive index and the thickness of these films was achieved by altering the relative fraction of the anionic and cationic materials combined with layer-by-layer deposition. We demonstrate the feasibility of this highly controllable deposition technique for fine-tuning grating properties. In addition a variety of biological and chemical sensing agents can easily be incorporated into these films, which makes this an attractive platform for realization of high-performance LPG-based sensors. (c) 2005 American Institute of Physics.application/pdfenIn CopyrightFew-mode fibersDependenceFilmsPhysicsArticle - Refereedhttp://scitation.aip.org/content/aip/journal/apl/86/22/10.1063/1.1940735https://doi.org/10.1063/1.1940735