Fluid tunable transition from trapping to discrete diffraction in waveguide arrays.
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.
School of Electrical and Computer Engineering and Centre for Ultra-high bandwidth Devices for Optical Systems (CUDOS), RMIT University, Melbourne, VIC 3001, Australia.
Eike
E
Zeller
Geethaka C
GC
Devendra
Thach G
TG
Nguyen
Arnan
A
Mitchell
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D011108:Polymers / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation*; D012212:Rheology / Q000295:instrumentation*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
D011108:Polymers