Results 21 to 30 of about 66,302 (314)

Terahertz Waveguide Prism

open access: yesAdvanced Photonics 2013, 2013
We present an easily fabricated waveguide prism for the terahertz (THz) frequency range. The prism is made of polypropylene and uses waveguide dispersion to spatially separate frequencies over the range of 0.1 to 0.7 THz. The diffraction properties of the prism were determined using electromagnetic field simulations and the waveguide parameters were ...
Claudia, Goy   +4 more
openaire   +2 more sources

Fabrication of submicrometer high refractive index tantalum pentoxide waveguides for optical propulsion of microparticles [PDF]

open access: yes, 2009
Design, fabrication, and optimization of tantalum pentoxide (Ta2O5) waveguides to obtain low-loss guidance at a wavelength of 1070 nm are reported.
Wilkinson, James S.   +5 more
core   +1 more source

Understanding the rich physics of light propagation in slow photonic crystal waveguides [PDF]

open access: yes, 2010
Selected papers. Held as part of SPIE Photonics West 2010.We study propagation losses in slow light photonic crystal waveguides and show that dispersion engineering can reduce the loss.
Lalanne, Phillippe   +35 more
core   +1 more source

Integrated Photonics on Glass: A Review of the Ion-Exchange Technology Achievements

open access: yesApplied Sciences, 2021
Ion-exchange on glass is one of the major technological platforms that are available to manufacture low-cost, high performance Planar Lightwave Circuits (PLC). In this paper, the principle of ion-exchanged waveguide realization is presented.
Jean-Emmanuel Broquin, Seppo Honkanen
doaj   +1 more source

Indium tin oxide overlayered waveguides for sensor applications [PDF]

open access: yes, 1997
The use of indium tin oxide (ITO) thin films as electrodes for integrated optical electrochemical sensor devices is discussed. The effect of various thicknesses of ITO overlayers exhibiting low resistivity and high transparency on potassium ion-exchanged
Wilkinson, James S.   +6 more
core   +1 more source

In situ loss measurement of direct UV written waveguides using integrated Bragg gratings [PDF]

open access: yes, 2010
The propagation loss of a direct UV-written silica-on-silicon waveguide is measured using an elegant nondestructive method. The technique uses integrated Bragg grating structures, which are observed from opposing launch directions to obtain information ...
Rogers, H.L.   +9 more
core   +1 more source

All-optical modulation in a CMOS-compatible amorphous silicon-based device [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
Active silicon photonic devices, which dynamically control the flow of light, have received significant attention for their use in on-chip optical networks.
Rao S., D’Addio C., Della Corte F. G.
doaj   +1 more source

Propagation Losses of Slotted Photonic Crystal Waveguides

open access: yesIEEE Photonics Journal, 2012
We have fabricated and characterized a set of slotted photonic crystal (SPhC) waveguides in silicon-on-insulator (SOI) with a length of up to 300 $\mu\hbox{m}$ and slot widths ranging between 115 and 145 nm.
A. Di Falco   +5 more
doaj   +1 more source

Waveguiding and photoluminescence in Er3+-doped Ta2O5 planar waveguides [PDF]

open access: yes, 2009
The optimization of erbium-doped Ta2O5 thin film waveguides deposited by magnetron sputtering onto thermally oxidized silicon wafer is described. Optical constants of the film were determined by ellipsometry.
OTON NIETO, CLAUDIO JOSE   +9 more
core   +1 more source

TE/TM-Pass Polarizer Based on Lithium Niobate on Insulator Ridge Waveguide

open access: yesIEEE Photonics Journal, 2013
We propose a TE/TM-pass polarizer based on a shallow X-cut lithium niobate-on-insulator (LNOI) ridge waveguide. In shallow X-cut LNOI ridge waveguides, the leaky mode is interchanged between TE and TM polarization waves depending on the ridge waveguide ...
Emi Saitoh   +3 more
doaj   +1 more source

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