Dispersion engineered Ge_115As_24Se_645 nanowire for supercontinuum generation: A parametric study
TLDR
To confirm the accuracy of dispersion coefficients obtained through numerical computations, a data-fitting procedure based on the Taylor series expansion provides good agreement with the actual group velocity dispersion curve obtained by using a full-vectorial finite-element mode-solver.Abstract:
A promising design of Ge11.5As24Se64.5 nanowires for supercontinuum generation is proposed through numerical simulations. It can be used for generating a supercontinuum with 1300-nm bandwidth. The dispersion parameters upto eighth-order are obtained by calculating the effective mode index with the finite-element method. We have investigated dispersion curves for a number of nanowire geometries. Through dispersion engineering and by varying dimensions of the nanowires we have identified a promising structure that shows possibility of realizing a wideband supercontinuum. We have found significant variations in its bandwidth with the inclusion of higher-order dispersion coefficients and indicated the possibility of obtaining spurious results if the adequate number of dispersion coefficients is not considered. To confirm the accuracy of dispersion coefficients obtained through numerical computations, we have shown that a data-fitting procedure based on the Taylor series expansion provides good agreement with the actual group velocity dispersion curve obtained by using a full-vectorial finite-element mode-solver.read more
Citations
More filters
Supercontinuum generation, photonic crystal fiber
TL;DR: In this article, a review of numerical and experimental studies of supercontinuum generation in photonic crystal fiber is presented over the full range of experimentally reported parameters, from the femtosecond to the continuous-wave regime.
Journal ArticleDOI
Mid-infrared supercontinuum generation using dispersion-engineered Ge 11.5 As 24 Se 64.5 chalcogenide channel waveguide
TL;DR: Numerically investigate mid-infrared supercontinuum (SC) generation in dispersion-engineered, air-clad, chalcogenide-glass channel waveguides employing two different materials, Ge(11.5)As(24)Se(64.5), and shows that SC can be extended even further when MgF(2) glass is used for the lower cladding of chalCogenide waveguide.
Journal ArticleDOI
Broadband mid-infrared supercontinuum generation in dispersion-engineered silicon-on-insulator waveguide
Hamed Saghaei,Vien Van +1 more
TL;DR: In this paper, the effect of waveguide parameters on the dispersion is studied to achieve optimum dispersion profiles for supercontinuum (SC) generation in the anomalous and normal dispersion regimes.
Journal ArticleDOI
Dispersion-engineered microstructured optical fiber for mid-infrared supercontinuum generation.
TL;DR: Simulations reveal that, by launching 100 fs input pulses centered at λ0=6.2 μm with a peak power of 2 kW into the MOF, an optical spectrum as wide as 9.5 μm will be achieved, which is a suitable source for MIR applications such as spectroscopy, food quality control, and gas sensing.
Journal ArticleDOI
Design and modelling of dispersion-engineered rib waveguide for ultra broadband mid-infrared supercontinuum generation
TL;DR: In this article, a rib waveguide structure with non-linear coefficient as high as 18,250 W−1,km−1 at 2.5μm was proposed for ultra broadband mid-infrared supercontinuum generation across molecular fingerprint region.
References
More filters
Journal ArticleDOI
Supercontinuum generation in photonic crystal fiber
TL;DR: In this paper, a review of numerical and experimental studies of supercontinuum generation in photonic crystal fiber is presented over the full range of experimentally reported parameters, from the femtosecond to the continuous-wave regime.
Journal ArticleDOI
Soliton self-frequency shift cancellation in photonic crystal fibers.
TL;DR: The cancellation of the soliton self-frequency shift in a silica-core photonic crystal fiber with a negative dispersion slope is reported and may find applications in the development of a family of optical parametric amplifiers.
Journal ArticleDOI
Finite-element solution of integrated optical waveguides
B. M. A. Rahman,J.B. Davies +1 more
TL;DR: In this paper, a vector H -field finite-element method has been used for the solution of optical waveguide problems, where the permittivity of the guiding structures can be an arbitrarily tensor, only limited to being lossless.
Journal ArticleDOI
Soliton fission and supercontinuum generation in silicon waveguides
TL;DR: It is shown through numerical simulations that silicon waveguides can be used to create a supercontinuum extending over 400 nm by launching femtosecond pulses as higher-order solitons.
Journal ArticleDOI
Low-threshold supercontinuum generation in highly nonlinear chalcogenide nanowires
Dong-Il Yeom,Eric Magi,Michael R. E. Lamont,Michael A. F. Roelens,Libin Fu,Benjamin J. Eggleton +5 more
TL;DR: High nonlinearity in a highly nonlinear arsenic selenide chalcogenide nanowire with tailored dispersion enables low-threshold soliton fission leading to large spectral broadening at a dramatically reduced peak power of several watts, corresponding to picojoule energy.