Igor Anisimov
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View article: Gyrotropic metamaterials with tailored magnetization
Gyrotropic metamaterials with tailored magnetization Open
Magnetic materials are crucial in nonreciprocal electromagnetic devices, such as isolators, circulators, and nonreciprocal phase shifters. However, their use is often limited by the need for a uniform bias magnetic field and nonuniform dem…
View article: Micropyramidal Si Photonics–A Versatile Platform for Detector and Emitter Applications
Micropyramidal Si Photonics–A Versatile Platform for Detector and Emitter Applications Open
Anisotropic wet etching of silicon (Si) has been known for decades, but the extraordinary capabilities of this technology to provide highly ordered microphotonic arrays have received limited attention in previous studies. It is shown that …
View article: Thermo-optic VO<sub>2</sub>-based silicon waveguide mid-infrared router with asymmetric activation thresholds and large bi-stability: errata
Thermo-optic VO<sub>2</sub>-based silicon waveguide mid-infrared router with asymmetric activation thresholds and large bi-stability: errata Open
The authors report an error in the phrasing and citation of the reference to simulation model input data in [ Opt. Express 31 ( 14 ), 23260 2023 10.1364/OE.493895 ]. The original phrasing misplaced “heat capacity” after the in-text citatio…
View article: Photodetector Focal Plane Arrays Integrated with Silicon Micropyramidal Structures in MWIR
Photodetector Focal Plane Arrays Integrated with Silicon Micropyramidal Structures in MWIR Open
Light-concentrating truncated Si micropyramidal arrays with 54.7 degree sidewall angles were successfully integrated with PtSi Schottky barrier photodetectors. Four different devices consisting of 10 x 10 photodetectors with 60 um pitch co…
View article: Focusing and Diffraction of Light by Periodic Si Micropyramidal Arrays
Focusing and Diffraction of Light by Periodic Si Micropyramidal Arrays Open
This research was devoted to modeling of the optical properties of Si micropyramids aimed at designing optimal structures for applications as light concentrators in mid-wave infrared (MWIR) focal place arrays (FPAs). It is shown that compl…
View article: Optical limiter based on PT-symmetry breaking of reflectionless modes
Optical limiter based on PT-symmetry breaking of reflectionless modes Open
The application of parity–time (PT) symmetry in optics, especially PT-symmetry breaking, has attracted considerable attention as an approach to controlling light propagation. Here, we report optical limiting by two coupled optical cavities…
View article: Thermo-optic VO<sub>2</sub>-based silicon waveguide mid-infrared router with asymmetric activation thresholds and large bi-stability
Thermo-optic VO<sub>2</sub>-based silicon waveguide mid-infrared router with asymmetric activation thresholds and large bi-stability Open
We report a novel four-port optical router that exploits non-linear properties of vanadium dioxide (VO 2 ) phase-change material to achieve asymmetrical power threshold response with power limiting capability. The scope of this study lies …
View article: Optical Limiter Based on PT-Symmetry Breaking of Reflectionless Modes
Optical Limiter Based on PT-Symmetry Breaking of Reflectionless Modes Open
The application of parity-time (PT) symmetry in optics, especially PT-symmetry breaking, has attracted considerable attention as a novel approach to controlling light propagation. Here, we report optical limiting by two coupled optical cav…
View article: Optical switching performance of thermally oxidized vanadium dioxide with an integrated thin film heater
Optical switching performance of thermally oxidized vanadium dioxide with an integrated thin film heater Open
Optical switching performance of vanadium dioxide produced by thermal oxidation of vanadium is presented in this paper. A 100nm thick vanadium was oxidized under controlled conditions in a quartz tube furnace to produce approximately 200nm…
View article: Microconical silicon mid-IR concentrators: spectral, angular and polarization response
Microconical silicon mid-IR concentrators: spectral, angular and polarization response Open
It is widely discussed in the literature that a problem of reduction of thermal noise of mid-wave and long-wave infrared (MWIR and LWIR) cameras and focal plane arrays (FPAs) can be solved by using light-concentrating structures. The idea …
View article: Wide-Aperture Layered-Sheet Faraday Isolator
Wide-Aperture Layered-Sheet Faraday Isolator Open
We introduce the first conceptual design of a free-space thin-sheet isolator with unlimited aperture and the possibility of a broadband omnidirectional rejection of the backward propagating light. The proposed design involves a multilayere…
View article: Free-Space Wide-Aperture Sheet-Isolator Based on a Multilayered Resonant\n Cavity
Free-Space Wide-Aperture Sheet-Isolator Based on a Multilayered Resonant\n Cavity Open
We introduce the first conceptual design of a free-space thin-sheet isolator\nwith unlimited aperture and the possibility of a broadband omnidirectional\nrejection of the backward propagating light. The proposed design involves a\nmultilay…
View article: Broadband Reflective Optical Limiter Using GST Phase Change Material
Broadband Reflective Optical Limiter Using GST Phase Change Material Open
We experimentally demonstrate a thermally induced reflective optical limiter using GeSbTe (GST) and SiO in a multilayer photonic bandgap edge-filter configuration. In the PASS state, greater than 80% transmission was achieved at nm over …