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Efficient supercontinuum generation demands for fine‐tuning of the dispersion of the underlying waveguide. Resonances introduced into waveguide systems can substantially improve nonlinear dynamics in ultrafast supercontinuum generation via modal hybridization and formation of avoided crossings. Using the example of exposed core fibers functionalized by nanofilms with sub‐nanometer precision both zero‐dispersion...
We present analytical expressions for the complex effective index of single-ring anti-resonant fibers. The expressions are based on a planar reflection model and approximations for core diameters being large compared to the wavelength. The results are in excellent agreement with numerical simulations.
In my presentation I will review our recent results on plasmonics inside optical fiber with the special focus on plasmonic hybridization, supermode excitation and a novel fiber-integrated near field probe.
In my presentation I will review our recent results on hybrid chalcogenide-silica waveguides with the focus on a new type of nanotaper and mid infrared super continuum generation.
Localized surface plasmon resonances (LSPRs) are collective oscillations of the electron ensemble in a metallic nanostructure and can be excited by electromagnetic (EM) waves. Their characteristics are determined by the morphology of the nanostructure and the permittivities of the metal and the surrounding dielectric. An intriguing feature of LSPRs is the local EM field enhancement, resulting in strong...
In my presentation I will review our recent results related to nanophotonic hybrid waveguides in fiber form. I will discuss plasmonic hybridization of spiralling plasmons excited on metallic nanowires in photonic crystal fibers. I will also discuss the optical properties and fabrication of highly nonlinear chalcogenide-silica waveguides and their application in infrared supercontinuum generation.
Dielectric microparticles optically propelled along an air-filled hollow-core PCF come to a halt just before an absorbing mark on the fiber coating, when radiation pressure is opposed by an equal and opposite thermophoretic force.
Photonic crystal fibers (PCFs) consist of arrays of micrometer-size hollow channels extending along the entire fiber length. A new approach to modify the optical properties and to improve the design flexibility of such fibers is to fill the air holes of the array by with different materials, realizing all-solid hybrid fiber structures. In this talk, recent results on silica PCF filled with noble metals,...
Mode-locking of the disordered cubic sesquioxide crystal Yb:LuScO3 using a reflection-type single-walled carbon nanotube saturable absorber is demonstrated under diode pumping and compared with passive mode-locking by a commercial SESAM.
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