The composite planar waveguide structure consisting of the linearly graded-index layer and the nonlinear layer formed with an increasing the electric field

Optik ◽  
2021 ◽  
pp. 168542
Author(s):  
S.E. Savotchenko
Keyword(s):  
Electric Field ◽  
Planar Waveguide ◽  
Waveguide Structure ◽  
Graded Index ◽  
Nonlinear Layer

The Effects of Composition on the Spectral Loss Characteristics of SiGe Planar Waveguide Structures

1992 ◽  
Vol 281 ◽  
Author(s):  
Yang Zuoya ◽  
B. L. Weiss ◽  
G. Shao ◽  
F. Namavar
Keyword(s):  
Optical Properties ◽  
Planar Waveguide ◽  
Waveguide Structure ◽  
Propagation Loss ◽  
Band Edge ◽  
Optical Confinement ◽  
Structural And Optical Properties ◽  
Edge Absorption

ABSTRACTThe effect of the Si:Ge ratio in SiGe/Si heterostructures on the structural and optical properties of SiGe/Si planar waveguide are reported here for Ge concentrations from 1 to 33.6%. The high propagation loss at 1.15 pm is due to band edge absorption, which increases as the Ge concentration increases, while the loss at longer wavelengths (1.523 pm) increases with decreasing Si concentration, due to the reduced optical confinement of the waveguide structure.

Impressing technology of optical Bragg’s gratings on planar optical sol-gel waveguides

2006 ◽  
Vol 14 (2) ◽  
Author(s):  
T. Pustelny ◽  
I. Zielonka ◽  
C. Tyszkiewicz ◽  
P. Karasiński ◽  
B. Pustelny
Keyword(s):  
Light Beam ◽  
Gas Sensors ◽  
Planar Waveguide ◽  
Sol Gel ◽  
Technical Problem ◽  
Waveguide Structure ◽  
Planar Waveguides ◽  
Optical Systems ◽  
Grating Couplers ◽  
Toxic Gases

AbstractThe aim of the presented investigations was to develop a technique of producing Bragg’s grating couplers on planar waveguides. Waveguides are obtained by means of the sol-gel technology. The introduction of a light beam into the structure of the waveguide is in the case of planar or strip optical systems always an essential technical problem, requiring simple and reproducible solutions without extending excessively the waveguide structure. The paper presents a technology of producing grating couplers by impressing the pattern of the network while forming the planar waveguide structure applying the sol-gel method. Some remarks concerning the sol-gel technology are also presented. The results of investigations on grating couplers obtained in such a way have been discussed, too.Attention has been drawn to the possibility of using such structures in optoelectronic sensors, particularly gas sensors, including sensors of water vapour as well as toxic gases.

Green laser diodes with channelled-substrate planar waveguide structure

1995 ◽  
Vol 31 (19) ◽  
pp. 1667-1668 ◽  
Author(s):  
T. Kawasumi ◽  
Y. Mori ◽  
A. Ishibashi ◽  
N. Nakayama
Keyword(s):  
Planar Waveguide ◽  
Laser Diodes ◽  
Green Laser ◽  
Waveguide Structure

Non-Paraxial Diffraction-Free Propagation of Light in a Graded-Index Planar Waveguide with Hyperbolic Secant Refractive Index Profile

2000 ◽  
Vol 39 (Part 1, No. 3B) ◽  
pp. 1463-1467 ◽  
Author(s):  
Carlos Gomez-Reino ◽  
María Victoria Perez ◽  
Carmen Bao ◽  
María Teresa Flores-Arias ◽  
Silvia Vidal ◽  
...  
Keyword(s):  
Refractive Index ◽  
Planar Waveguide ◽  
Refractive Index Profile ◽  
Index Profile ◽  
Graded Index ◽  
Propagation Of Light ◽  
Free Propagation

Bistable behaviour of light waves in a graded-index planar waveguide with nonlinear substrate

1984 ◽  
Vol 313 (1525) ◽  
pp. 361-362 ◽  
Keyword(s):  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Planar Waveguide ◽  
Graded Index ◽  
Light Waves

Bistability of a planar guiding structure with a nonlinear refractive index of the upper substrate and a lower linear substrate with a nonabrupt boundary is studied. The central guiding medium is assumed to be linear.

scholarly journals Mode Indices Measurement of a Special Ti-Diffused $ \hbox{LiNbO}_{3}$ Waveguide Structure: A Strip Waveguide Array Embedded in a Planar Waveguide

2012 ◽  
Vol 4 (5) ◽  
pp. 1553-1559 ◽  
Author(s):  
Bei Chen ◽  
Ping-Rang Hua ◽  
Shi-Yu Xu ◽  
Dao-Yin Yu ◽  
Edwin Yue-Bun Pun ◽  
...  
Keyword(s):  
Planar Waveguide ◽  
Waveguide Structure ◽  
Waveguide Array ◽  
Strip Waveguide
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