Zeller Eike, Devendra Geethaka C, Nguyen Thach G, Mitchell Arnan
School of Electrical and Computer Engineering and Centre for Ultra-high bandwidth Devices for Optical Systems (CUDOS), RMIT University, Melbourne, VIC 3001, Australia.
Opt Express. 2013 Jul 29;21(15):18196-206. doi: 10.1364/OE.21.018196.
We report on the fluid tunable transition from trapping to discrete diffraction in planar polymer waveguide arrays. A novel optofluidic polymer waveguide array platform was engineered to allow a wavelength dependent transition from a localised state where light is trapped in a defect mode to delocalised state where light is spreading through discrete diffraction. The spectral location of this transition can be controlled through a variation of the fluid's refractive index. The platform is compatible with aqueous solutions, making it an interesting candidate for an integrated refractive index sensor to perform label-free biosensing.
我们报道了平面聚合物波导阵列中从捕获到离散衍射的流体可调转变。设计了一种新型的光流体聚合物波导阵列平台，以实现与波长相关的转变，即从光被困在缺陷模式的局域态转变为光通过离散衍射传播的离域态。这种转变的光谱位置可通过改变流体的折射率来控制。该平台与水溶液兼容，使其成为用于无标记生物传感的集成折射率传感器的一个有趣候选者。
