Nanofilters for Optical Nanocircuits

Abstract

We theoretically and numerically study the design of optical 'lumped' nanofiltering devices in the framework of our recently proposed paradigm for optical nanocircuits. In particular, we present the design of basic filtering elements, such as low-pass, band-pass, stop-band and high-pass 'lumped' nanofilters, for use in optical nanocircuits together with more complex designs, such as multi-zero or multi-pole nanofilters, to work at THz, infrared and optical frequencies. Following the nanocircuit theory, we show how it is possible to design such complex frequency responses by simple rules, similar to RF circuit design, and we compare the frequency response of these optical nanofilters with classic filters in RF circuits. These results may provide a theoretical foundation for fabricating nanofilters in optical lumped nanocircuit devices.

34 pages, 14 figures

References in corpus (8)

• Circuit elements at optical frequencies: nano-inductors, nano-capacitors and nano-resistors
• Theory of Linear Chains of Metamaterial/Plasmonic Particles as Sub-Diffraction Optical Nanotransmission Lines
• Optical Nanotransmission Lines: Synthesis of Planar Left-Handed Metamaterials in the Infrared and Visible Regimes
• Three-Dimensional Nanotransmission Lines at Optical Frequencies: A Recipe for Broadband Negative-Refraction Optical Metamaterials
• Parallel, Series, and Intermediate Interconnections of Optical Nanocircuit Elements Part 2: Nanocircuit and Physical Interpretation
• Nanoinsulators and nanoconnectors for optical nanocircuits
• Coupling of Optical Lumped Nanocircuit Elements and Effects of Substrates
• Optical 'Shorting Wires'