A Diffusion Analysis Approach to TE Mode Propagation in Randomly Perturbed Optical Waveguides

2007 ◽  
Vol 68 (2) ◽  
pp. 523-543 ◽  
Author(s):  
Emmanuel Perrey-Debain ◽  
I. David Abrahams
Keyword(s):  
Optical Waveguides ◽  
Analysis Approach ◽  
Mode Propagation ◽  
Te Mode ◽  
Diffusion Analysis

Optical Waveguides in GaAs/AlGaAs MQW Structures Formed by Silicon Induced Quantum Well Mixing

1989 ◽  
Vol 152 ◽  
Author(s):  
A. C. Wismayer ◽  
B. L. Weiss ◽  
J. S. Roberts
Keyword(s):  
Quantum Well ◽  
Annealing Time ◽  
Optical Waveguides ◽  
Propagation Loss ◽  
Mode Propagation ◽  
Furnace Annealing ◽  
Te Mode ◽  
Multiquantum Well

ABSTRACTSi implantation followed by furnace annealing has been used to produce the mixing of GaAs/AlGaAs multiquantum well (MQW) structures grown by MOVPE. Masked implants have been used to fabricate stripe optical waveguides. Results are presented here for the effect of the ion dose and the annealing time and it is shown that complete mixing occurs for a 1015 cm−2 dose of 500 keV Si+ after annealing at 750 °C for two hours. Waveguides fabricated using this process showed a minimum TE mode propagation loss of 33 dB cm−1 at a wavelength of 1.15 μm.

Photoelastic Waveguides Using Strain-Compensated InAsP/InGaP Multi-Quantum-Wells

1995 ◽  
Vol 379 ◽  
Author(s):  
Q. Z. Liu ◽  
X. B. Mei ◽  
L. S. Yu ◽  
C. W. Tu ◽  
S. S. Lau
Keyword(s):  
Quantum Wells ◽  
Optical Waveguides ◽  
Intensity Ratio ◽  
Semiconductor Heterostructures ◽  
Anisotropic Property ◽  
Light Confinement ◽  
Te Mode

ABSTRACTPhotoelastic optical waveguides using strain-compensated InAsP/InGaP multiplequantum-well (MQW) have been fabricated. Lateral light confinement for waveguiding is achieved by introducing stress into semiconductor heterostructures with stable WNi surface stressor stripes. The waveguides have been characterized at both 1.52 μm and 1.32 μm wavelength in term of TE/TM intensity ratio. At 1.52 μm, the waveguides favor the propagation of TE mode, and the TE/TM intensity ratio can be as large as 15 dB. At 1.32 μm, the TE and TM intensity can be comparable. Anisotropy of waveguides fabricated along [110] or [110] directions has also been observed in term of TE/TM intensity ratio, which suggests the presence of anisotropic property of the strain-compensated MQW.

scholarly journals Single-mode propagation of adiabatic guided modes in smoothly irregular integral optical waveguides

2020 ◽  
Vol 28 (4) ◽  
pp. 361-377
Author(s):  
Anton L. Sevastianov
Keyword(s):  
Electromagnetic Radiation ◽  
Optical Waveguides ◽  
Single Mode ◽  
Approximate Solutions ◽  
Reduced Model ◽  
Mode Propagation ◽  
Eigenvalues And Eigenfunctions ◽  
Waveguide Modes ◽  
Stationary Propagation ◽  
Special Case

This paper investigates the waveguide propagation of polarized electromagnetic radiation in a thin-film integral optical waveguide. To describe this propagation, the adiabatic approximation of solutions of Maxwells equations is used. The construction of a reduced model for adiabatic waveguide modes that retains all the properties of the corresponding approximate solutions of the Maxwell system of equations was carried out by the author in a previous publication in DCM ACS, 2020, No 3. In this work, for a special case when the geometry of the waveguide and the electromagnetic field are invariant in the transverse direction. In this case, there are separate nontrivial TEand TM-polarized solutions of this reduced model. The paper describes the parametrically dependent on longitudinal coordinates solutions of problems for eigenvalues and eigenfunctions - adiabatic waveguide TE and TM polarizations. In this work, we present a statement of the problem of finding solutions to the model of adiabatic waveguide modes that describe the stationary propagation of electromagnetic radiation. The paper presents solutions for the single-mode propagation of TE and TM polarized adiabatic waveguide waves.

Light-Induced Self-Written Polymeric Optical Waveguides for Single-Mode Propagation and for Optical Interconnections

2004 ◽  
Vol 16 (3) ◽  
pp. 804-806 ◽  
Author(s):  
O. Sugihara ◽  
H. Tsuchie ◽  
H. Endo ◽  
N. Okamoto ◽  
T. Yamashita ◽  
...  
Keyword(s):  
Optical Waveguides ◽  
Single Mode ◽  
Mode Propagation ◽  
Optical Interconnections

Theoretical Analysis of Photonic Band Gaps and Defect Modes of Novel Photonic Crystal Waveguides Consisting of Si-Ion Implanted SiO2 Using the Finite-Difference Time-Domain Method

2010 ◽  
Vol 459 ◽  
pp. 162-167 ◽  
Author(s):  
Amarachukwu Valentine Umenyi ◽  
Shinya Kawashiri ◽  
Kenta Miura ◽  
Osamu Hanaizumi
Keyword(s):  
Finite Difference ◽  
Time Domain ◽  
Triangular Lattice ◽  
Finite Difference Time Domain ◽  
Transverse Magnetic ◽  
Design Parameters ◽  
Mode Propagation ◽  
Te Mode ◽  
Difference Time ◽  
Ion Implanted

In this paper, photonic crystals (PC) based on 2-D periodic arrays of air holes were investigated on Si-ion implanted SiO2using finite-difference time-domain (FDTD) simulations. The PC design parameters based on the telecommunication wavelength (λ=1.55 µm) were obtained by varying the radius to lattice constant ratio (r/a) from 0.2 to 0.45. We analyzed both transverse electric (TE) and transverse magnetic (TM) mode propagation in triangular-lattice PCs. The result obtained shows that a PC bandgap (PBG) exists for TE-mode propagation in the Si-ion implanted SiO2patterned 2-D triangular lattice of air holes. We have also calculated the dispersion relations for the TE mode of a line defect in the structure and shown a fabricated sample. These analyses are obviously important for fabricating novel PC waveguides, which can easily be integrated into the existing silicon technology for directing light from one part of a chip to the other.

Modified mode propagation in optical waveguides

1977 ◽  
Vol 13 (12) ◽  
pp. 347 ◽  
Author(s):  
C.W. Pitt ◽  
L.M. Walpita
Keyword(s):  
Optical Waveguides ◽  
Mode Propagation

scholarly journals Propagation loss on a Si-Slab Waveguide: Simulation revisited

2019 ◽  
Vol 2 (1) ◽  
pp. 76
Author(s):  
Wildan Panji Tresna ◽  
Takeo Maruyama
Keyword(s):  
Optical Waveguide ◽  
Optical Waveguides ◽  
Propagation Loss ◽  
Slab Waveguide ◽  
Core Material ◽  
Light Passing ◽  
Te Mode ◽  
Propagation Of Light ◽  
Waveguide Design ◽  
Material Index

Slab waveguide is one of the simplest types of optical waveguide, the confinement factor is only determined by the thickness of one side so that the propagation of light passing through it will be confined in the material. The slab waveguide is built from Si as the core material and SiO2 as the substrate. The use of various optical waveguides is very dependent on the objectives to be achieved in its application, for it is very important to know the characteristics of each optical waveguide. In this paper the writer wants to know the characteristics of a slab waveguide, specifically with regard to propagation loss. The simulation results show that the propagation loss in the slab waveguide design that the authors propose is around 0.1dB / mm in TE mode conditions. The occurrence of propagation loss in the simulation is likely due to imperfections in determining the effective material index in the design of the slab waveguide.

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