期刊
PHOTONIC AND PHONONIC PROPERTIES OF ENGINEERED NANOSTRUCTURES VIII
卷 10541, 期 -, 页码 -出版社
SPIE-INT SOC OPTICAL ENGINEERING
DOI: 10.1117/12.2290405
关键词
Metamaterial; Phase-change material; Tunable filter; Multispectral Imaging
资金
- US Naval Research Laboratories ONRG programme [N62909-16-1-2174]
- EPSRC [EP/M015130/1, EP/M015173/1]
- EPSRC CDT in Metamaterials [EP/L015331/1]
- QinetiQ PLC
- EPSRC [EP/M015130/1, EP/M015173/1] Funding Source: UKRI
Phase-change materials (PCMs) provide a route to adding dynamic tunability and reconfigurability to many types of photonic devices by changing the phase-state of the PCM itself. In this work we discuss the use of the phase-change alloy GeSbTe (GST) in the design of dynamically tunable filters operating in the infrared. GST is used to manipulate the extraordinary optical transmission of a periodic hole-array in a metallic layer, so creating ultra-thin, tunable band-pass filters. We discuss the use of such filters for multispectral imaging, suggest some approaches to overcome various practical challenges, and, finally, show that through the use of appropriate post processing algorithms this tunable filter could provide a cheap, ultra-thin, real-time, and relatively high performance multispectral imaging device.
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