Dense photonic integration requires miniaturization of materials, devices and subsystems, including passive components (e.g., engineered composite metamaterials, filters, etc.), active components (e.g., modulators and nonlinear wave mixers) and integrated circuits (Fourier transform spectrometer, programmable phase modulator of free space modes, etc.).
The inherent Ohmic Loss of plamsonic has hampered the commercialization of a novel classes of electro-optic devices. We will discuss recent progress in realizing high Q(>5000) and low Q(<100) plasmonic resonators to overcome this limitation, thus enabling low-loss switches and high-speed modulators beyond state-of-the-art.
Fast optical limiters are needed to protect sensors from intense short laser pulses. An optical limiter design based on a conducting-oxide grating with a large nonlinear refractive index at the plasma frequency is proposed and investigated.
We extended the concept of an induced-transmission filter (ITF) to enable dynamic filtering by incorporating a thin film of vanadium dioxide (VO2), a phase-transition material. By varying the state of the VO2, the filter can be switched between narrow- and broadband transparency.