scholarly journals Planar waveguides produced by implanting Si and C ions in rutile

2018 ◽  
Vol 64 (3) ◽  
pp. 251
Author(s):  
Julián Mejía Morales ◽  
Erick Flores-Romero ◽  
Rebeca Trejo Luna ◽  
Jorge Rickards
Keyword(s):  
Refractive Index ◽  
Planar Waveguides ◽  
Optical Barrier ◽  
Ion Energy ◽  
Anisotropic Properties ◽  
Rutile Crystal ◽  
Crystallographic Planes

Planar waveguides were generated in samples of rutile crystal (TiO2) by bombarding with two typesof ion: silicon and carbon. Rutile is used because of its anisotropic properties, particularly its birefrin-gence. The guide is generated due to damage caused by the ions in the crystal which change its index ofrefraction. Three parameters were used: the implantation ion energy, the implantation uence, and theorientation of the crystallographic planes. The refractive index prole of the irradiated sample was cal-culated and together with the value of the optical barrier the comparison was made between the dierentwaveguides generated.

Waveguides Fabricated in LiNbO3 by Proton Implantation

1991 ◽  
Vol 244 ◽  
Author(s):  
P. Moretti ◽  
P. Thevenard ◽  
K. Wirl ◽  
P. Hertel
Keyword(s):  
Refractive Index ◽  
Refractive Index Profile ◽  
Planar Waveguides ◽  
Optical Barrier ◽  
Dark Line ◽  
Wide Range ◽  
Ion Energies ◽  
Optical Planar Waveguides ◽  
Proton Implantation ◽  
Mode Spectroscopy

ABSTRACTOptical planar waveguides, with a controllable thickness in a very wide range, typically from 3 to 20 μm, can be fabricated by thermally controlled proton implantation in LiNbO3. In the nuclear stopping region at the end of the ion's tracks a sufficient decrease in refractive index is obtained, thus forming an adequate optical barrier. The mode confinement was investigated by dark line mode spectroscopy, and the refractive index profiles were reconstructed. The effects of different ion fluences and ion energies in the Mev range on the refractive index profile at 300 K have been investigated.

The influence of single layer MoS2 flake on the propagated surface plasmons of silver nanowire

2021 ◽  
Author(s):  
Liu Lu ◽  
Tiantian Zhao ◽  
Lei Chen ◽  
Chenyang Wang ◽  
Zhiqiang Zhou ◽  
...  
Keyword(s):  
Refractive Index ◽  
Single Layer ◽  
High Refractive Index ◽  
Transmission Efficiency ◽  
Silver Nanowire ◽  
Propagation Loss ◽  
Optical Barrier ◽  
Propagation Length ◽  
Simulation Results ◽  
Ag Nanowire

Abstract We demonstrate the enhancement of both excitation and transmission efficiency of the propagated surface plasmon (SP) of Ag nanowire (Ag NW) in hybrid Ag-MoS2 structure by contrasting the SP propagation of the same Ag NW on different substrates including silicon substrate, monolayer MoS2, or partially overlapping the Ag NW on MoS2 flake. The simulation results indicate that with the assistance of MoS2, the leaky radiation of the hybrid plasmonic modes of the H1 and H2 can be prominently suppressed by the high refractive index dielectric layer of the MoS2, which provides an optical barrier blocking the leaky radiation, resulting in the reduced propagation loss. Our work provides a feasible and effective method to enhance the SP propagation length.

FINITE ELEMENT ANALYSIS OF TE AND TM MODES IN NONLINEAR PLANAR WAVEGUIDES

1994 ◽  
Vol 03 (01) ◽  
pp. 101-116 ◽  
Author(s):  
M. ZOBOLI ◽  
S. SELLERI
Keyword(s):  
Finite Element ◽  
Refractive Index ◽  
Transverse Magnetic ◽  
Planar Waveguides ◽  
Mode Analysis ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Transverse Magnetic Mode ◽  
Solution Convergence ◽  
Index Distribution

A general approach based on the finite element method for analyzing optical waves guided by dielectric planar waveguides with arbitrary nonlinear media and with arbitrary refractive index distribution is considered. A complete transverse-electric and transverse-magnetic mode analysis is presented and TM polarization solutions are obtained without approximations on the biaxial nature of the nonlinear refractive index. Solution convergence and stability is discussed and both film-guided and surface-guided modes are presented for symmetrical and asymmetrical structures. Bistability and hysteresis phenomena have been investigated for TE as well as for TM modes.

Refractive-index profiles of planar waveguides made by ion-exchange in glass

1985 ◽  
Vol 24 (22) ◽  
pp. 3692 ◽  
Author(s):  
Jacques Albert ◽  
G. L. Yip
Keyword(s):  
Refractive Index ◽  
Ion Exchange ◽  
Planar Waveguides

Er3+/Yb3+ co-doped phosphate glass waveguides formed by the H+ ion implantation

2020 ◽  
pp. 2150099
Author(s):  
He Pan ◽  
Shuo-Qi Lin ◽  
Li-Jie Shen ◽  
Rui-Lin Zheng ◽  
Li-Li Fu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Energy Loss ◽  
Phosphate Glass ◽  
Refractive Index Profile ◽  
Planar Waveguides ◽  
Optical Systems ◽  
Glass Waveguides ◽  
Integrated Optical ◽  
Proton Implantation ◽  
Co Doped

The 400 keV proton implantation with a fluence of [Formula: see text] ions/cm2 was applied on the [Formula: see text] co-doped phosphate glass to fabricate a planar waveguide structure. The mode profile at the end face of the waveguide was measured by the end-face coupling technique. The energy loss profile of the energetic protons was calculated by the SRIM 2013. The refractive index distribution was simulated by the reflectivity calculation method. Based on these results, the formation theory of the planar waveguides was discussed through simulating the energy loss distribution and analyzing the reconstructed refractive index profile, which could be used for applications in the future integrated optical systems.

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