Alonso R, Subí As J, Pelayo J, Villuendas F, Tornos J
Appl Opt. 1994 Aug 1;33(22):5197-201. doi: 10.1364/AO.33.005197.
The resonant excitation of metal-clad modes, including fundamental and higher-order modes, in a multilayer structure deposited on the polished cladding of a single-mode optical fiber is theoretically analyzed and experimentally demonstrated. The excitation of metal-clad modes is shown as a resonant power transfer from the fiber to the metal-clad mode that takes place for an external refractive-index value such that the effective index of the metal-clad mode reaches the cladding level. The observed attenuation on the TM polarization provides a suitable transducing mechanism for refractive-index sensor devices as well as the principle for developing tunable wavelength-polarized filters with a wide range of optical performance characteristics.
理论分析并实验证明了沉积在单模光纤抛光包层上的多层结构中金属包覆模式（包括基模和高阶模）的共振激发。金属包覆模式的激发表现为从光纤到金属包覆模式的共振功率转移，这种转移发生在外部折射率值使得金属包覆模式的有效折射率达到包层水平时。观察到的TM偏振衰减为折射率传感装置提供了合适的传感机制，同时也是开发具有广泛光学性能特征的可调谐波长偏振滤波器的原理。
