Results 281 to 290 of about 7,387,440 (343)

Polarization-independent switches on LiNbO3

Integrated Photonics Research, 1990
The basic structure of the noninterferometric switch (Fig. 1) is built in three sections: two passive polarization splitters and a mode-converter section.1If no voltage is applied to the mode converter electrodes, arbitrarily polarized light incident in one of the two input arms will exit one arm.
T. Pohlmann, A. Neyer, E. Voges
openaire   +1 more source

Tunable Graphene-Based Metasurface for Polarization-Independent Broadband Absorption in Lower Mid-Infrared (MIR) Range

IEEE transactions on electromagnetic compatibility (Print), 2020
This paper proposes a tunable graphene-based wideband metasurface for high absorption in the lower mid-infrared frequency region. The unit cell of the proposed structure consists of slot generated out of modified fractal-shaped graphene layer deposited ...
S. Ghosh, Vinit Singh Yadav, Santanu Das, Somak Bhattacharyya   +3 more
semanticscholar   +1 more source

Polarization independent perfect absorption of borophene metamaterials operating in the communication band

Physica Scripta
Two-dimensional (2D) materials, such as graphene and black phosphorus, support deeply confined and tunable plasmons, making them suitable for designing absorbers with ultra-compact size and flexible manipulation.
Ting Xiang, Zhe Sun, Lingfeng Wang, Qi Lin, Gui-dong Liu   +4 more
semanticscholar   +1 more source

Polarization independent double-band electromagnetically induced transparency effect in terahertz metamaterials

Journal of Optics, 2020
In this article, we experimentally and numerically investigated a metamaterial (MM) geometry capable of exhibiting polarization independent double-band electromagnetic induced transparency (EIT) effect.
Rakesh Sarkar, K. M. Devi, D. Ghindani, S. Prabhu, D. R. Chowdhury, G. Kumar   +5 more
semanticscholar   +1 more source

Highly compact polarization-independent grating coupler

Optics Letters, 2010
We propose a compact polarization-independent output grating coupler, which consists of T-shaped grooves. For only 20 periods on a silicon-on-insulator wafer with a 260nm thick top silicon layer, the output coupling efficiencies for both the TE and the TM modes are larger than 50% in the wavelength range of 1480-1580nm and are approximately 58% around ...
Shiqian, Shao, Yi, Wang
openaire   +2 more sources

Birefringent polarization-independent beam splitter

Applied Optics, 1979
By adjusting both the thickness and angle of the incidence of a birefringent channeled spectrum plate, the extraordinary and ordinary reflectivities can be equalized, thereby providing a polarization-independent beam splitter.
openaire   +2 more sources

Polarization-independent beam splitter

Review of Scientific Instruments, 1983
We report a new type of beam splitter capable of producing a division of light in a polarization-independent manner. Most off-axis beam splitters have a pronounced polarization dependence. An experimental device with a splitting ratio of about 7 dB varied less than ±0.1 dB as a function of incident linear polarization.
openaire   +1 more source

Polarization Independent GaAs/AlGaAs Electrooptic Modulator

Proceedings of IEE/LEOS Summer Topical Meetings: Integrated Optoelectronics, 1996
Two designs for polarization independent GaAs-AlGaAs interferometric electrooptic modulators are described. One design uses the linear electrooptic effect to couple degenerate TE/TM eigenmodes of a single-mode waveguide. In the other design the eigenmodes need only be near degenerate.
R. Spickermann, M.G. Peters, N. Dagli
openaire   +1 more source

Characterization of a polarization-independent transmission trap detector

Applied Optics, 1997
A six-element polarization-independent transmission trap detector with coaxial input and output beams has been constructed and full characterized. The measured optical parameters are compared with their values, predicted by Fresnel equations. Measured transmittances are in agreement with the predicted values within 2 x 10(-5) in the wavelength region ...
T, Kübarsepp, P, Kärhä, E, Ikonen
openaire   +2 more sources

Polarization-Independent Perfect Optical Metamaterial Absorber as a Glucose Sensor in Food Industry Applications

IEEE Transactions on Nanobioscience, 2019
Perfect optical metamaterial absorbers (POMMA) utilize intrinsic loss, with the aid of appropriate structural design, to achieve near unity absorption at a certain wavelength.
Z. Vafapour
semanticscholar   +1 more source