Dispersion engineered silicon nitride waveguides by geometrical and refractive-index optimization
نویسندگان
چکیده
منابع مشابه
Integrated Nonlinear Optics in Silicon Nitride Waveguides
Integrated optics platforms offer the possibility to implement compact photonic devices for nonlinear optics applications. Modern nanofabrication facilities allow the fabrication of sub-micron-sized waveguide geometries that confine light to reach very high optical intensities. These intensities enable efficient nonlinear processes that are further enhanced by using materials with high nonlinea...
متن کاملMid-infrared Raman amplification and wavelength conversion in dispersion engineered silicon-on-sapphire waveguides
Raman amplification based on stimulated Stokes Raman scattering (SSRS) and wavelength conversion based on coherent anti-Stokes Raman scattering (CARS) are theoretically investigated in silicon-on-sapphire (SOS) waveguides in the mid-infrared (IR) region. When the linear phase mismatch 1k is close to zero, the Stokes gain and conversion efficiency drop down quickly due to the effect of parametri...
متن کاملNegative refractive index in coaxial plasmon waveguides.
We theoretically show that coaxial waveguides composed of a metallic core, surrounded by a dielectric cylinder and clad by a metal outer layer exhibit negative refractive index modes over a broad spectral range in the visible. For narrow dielectric gaps (10 nm GaP embedded in Ag) a figure-of-merit of 18 can be achieved at lambda(0) = 460 nm. For larger dielectric gaps the negative index spectra...
متن کاملGuided modes in negative-refractive-index waveguides.
We study linear guided waves propagating in a slab waveguide made up of a negative-refractive-index material, the so-called left-handed waveguide. We reveal that the guided waves in left-handed waveguides possess a number of peculiar properties such as the absence of the fundamental modes, mode double degeneracy, and sign-varying energy flux. In particular, we predict the guided waves with a di...
متن کاملInverse dispersion engineering in silicon waveguides
We present a numerical tool that searches an optimal cross-section geometry of silicon-on-insulator waveguides given a target dispersion profile. The approach is a gradient-based multidimensional method whose efficiency resides on the simultaneous calculation of the propagation constant derivatives with respect to all geometrical parameters of the structure by using the waveguide mode distribut...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Optical Society of America B
سال: 2014
ISSN: 0740-3224,1520-8540
DOI: 10.1364/josab.31.002846