Experimental realization of plasmonic filters for multispectral and dual-polarization optical detection.
We report the design and implementation of a new class of plasmonic filters that are both wavelength and polarization selective. The plasmonic filter consists of a five-layer metallic photonic crystal structure and operates inside the photonic bandgap regime. We show that by manipulating the middle layer geometry alone, it is possible to tune the Fabry-Perot resonance over a broad spectral range (lambda=1.25to1.63 microm) and in a monolithic fashion. Furthermore, we show that the resonance has a definite polarization character that is determined by the orientation of the first layer grating. The plasmonic filter may be integrated with an array of photodetectors for high-throughput spectral and polarimetric imaging applications.
Yang
Zu-Po
ZP
The Future Chips Constellation and The Department of Physics, Applied Physics and Astronomy,Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
Lin
Shawn-Yu
SY
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D008027:Light; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D020349:Surface Plasmon Resonance / Q000295:instrumentation*