Journal: Scientific Reports

Article Title: Subcarrier wave continuous variable quantum key distribution with discrete modulation: mathematical model and finite-key analysis

doi: 10.1038/s41598-020-66948-0

Figure Lengend Snippet: Principal scheme of SCW CV-QKD setup. PSM is an electro-optical phase modulator; VOA is a variable optical attenuator; SF is a spectral filter that cuts off the carrier; PD is a photodiode. Diagrams in circles show the absolute value of signal spectrum taking into account only the first-order subcarriers. Diagrams in squares illustrate the absolute value of signal spectrum and comparison of spectra for various phase shifts; different coherent states are shown on phase plane.

Article Snippet: PSM is an electro-optical phase modulator; VOA is a variable optical attenuator; SF is a spectral filter that cuts off the carrier; PD is a photodiode.

Techniques: Comparison

Journal: Nanophotonics

Article Title: Advances in electrochromic device technology through the exploitation of nanophotonic and nanoplasmonic effects

doi: 10.1515/nanoph-2022-0670

Figure Lengend Snippet: Nanoplasmonic electrochromic color devices for full color modulation. (a)–(d) Plasmonic nanopixels based on a PANI modulation layer. (a) Schematic of the proposed device. An 80 nm Au nanoparticle is coated in a 20 nm-thick PANI shell and placed on a gold mirror, creating a plasmonic “hot spot” between the Au components. (b) FDTD simulation of the electric field distribution and (c) absorption and scattering spectra determined through the numerical approach. (d) Dark-field images of the nanopixel during electrochemical redox cycling . (e)–(g) Dynamic gap plasmon color printing device. (g) Schematic of the EC plasmonic nanodevice with Al nanostructures and a solid PEO electrolyte. (e) CV curve of the plasmonic nanodevice and (f) reflectance spectra (left) and wavelength of minimum reflection (right) taken during cyclic voltammetry, showing a continuous shift .

Article Snippet: The utilization of EC modulation for integrated optics and photonics was later demonstrated in form of an electrochromic variable optical attenuator (ECVOA) by O’Brien et al. [ ].

Techniques:

Journal: Nanophotonics

Article Title: Advances in electrochromic device technology through the exploitation of nanophotonic and nanoplasmonic effects

doi: 10.1515/nanoph-2022-0670

Figure Lengend Snippet: EC waveguide attenuation technology. (a) Integrated optical waveguide cell as introduced by Shi et al. with (b) electrochromic response for 0.025 mM (top) and 2.5 mM (bottom) PB concentration . (c) Voltage-dependent waveguide attenuation for 0.5 µM and 2 μM PB concentration . (d) SEM image of nanoplasmonic switch and a schematic of measurement cell. (e) Transmittance of nanoplasmonic switch as a function of voltage and cycle number . (f) Schematic illustration of a solid-state plasmochromic waveguide and (g) its corresponding voltage-dependent transmission [ , , , ].

Article Snippet: The utilization of EC modulation for integrated optics and photonics was later demonstrated in form of an electrochromic variable optical attenuator (ECVOA) by O’Brien et al. [ ].

Techniques: Concentration Assay, Transmission Assay