Brillouin scattering in thin film optical waveguides. II. Scattering theory

1982 ◽  
Vol 60 (12) ◽  
pp. 1804-1820 ◽  
Author(s):  
N. L. Rowell ◽  
G. I. Stegeman
Keyword(s):  
Thin Film ◽  
General Theory ◽  
Optical Waveguide ◽  
Optical Waveguides ◽  
Scattering Theory ◽  
Brillouin Scattering ◽  
Numerical Calculations ◽  
Field Analysis ◽  
Total Field ◽  
Optical Modes

The general theory of Brillouin scattering out of the guided optical modes by the acoustic modes of a thin film optical waveguide is formulated in terms of a total field analysis which includes the effects of both the elastooptic and corrugation scattering mechanisms. The general analytical forms for the field discontinuities at the film boundaries are given and the spectral densities are evaluated for two particular radiative geometries. The results of numerical calculations for the geometries are presented.

Brillouin scattering in thin film optical waveguides. III. Experiments

1982 ◽  
Vol 60 (12) ◽  
pp. 1821-1837 ◽  
Author(s):  
N. L. Rowell ◽  
V. C-Y. So ◽  
R. Normandin ◽  
G. I. Stegeman
Keyword(s):  
Thin Film ◽  
Optical Waveguides ◽  
Brillouin Scattering ◽  
Planar Waveguides ◽  
Experimental Results

A series of experimental results on Brillouin scattering in thin film optical waveguides is discussed for two scattering geometries and for three types of planar waveguides. The results of these experiments are compared with the theory presented in the previous two papers.

Brillouin scattering in thin film optical waveguides. I. Theory of the phonon modes

1982 ◽  
Vol 60 (12) ◽  
pp. 1788-1803 ◽  
Author(s):  
N. L. Rowell ◽  
G. I. Stegeman
Keyword(s):  
Thin Film ◽  
Density Of States ◽  
Optical Waveguides ◽  
Thick Plate ◽  
Brillouin Scattering ◽  
Thermal Fluctuations ◽  
Reflection Coefficients ◽  
Phonon Modes ◽  
Bulk Waves

The phonon modes of a thick plate and a thick plate coated with a thin film are discussed in the light of recent experiments on Brillouin scattering in thin film optical waveguides. Using the reflection coefficients for bulk waves, we have obtained the field structures, the mode normalization for excitation by thermal fluctuations, and the density of states for these modes. Both bulk and surface (Rayleigh, Sezawa, and Love) phonons are discussed.

Transparency Improvement of SiCO Thin Film for Optical Waveguide with Reactive Sputtering Method

2020 ◽  
Vol 140 (12) ◽  
pp. 369-373
Author(s):  
Hiroyuki Nikkuni ◽  
Chizuru Numata ◽  
Ryoto Yamaji ◽  
Hiroshi Ito ◽  
Yoshio Kawamata
Keyword(s):  
Thin Film ◽  
Optical Waveguide ◽  
Reactive Sputtering

scholarly journals Adaptive Shell Spherical Reflector Actuated with PVDF-TrFE Thin Film Strain Actuators

Actuators ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 7
Author(s):  
Kainan Wang ◽  
Thomas Godfroid ◽  
Damien Robert ◽  
André Preumont
Keyword(s):  
Thin Film ◽  
Active Material ◽  
Quadratic Model ◽  
Influence Functions ◽  
Regularization Technique ◽  
Thin Polymer ◽  
Optical Modes ◽  
Electrostrictive Material ◽  
Ill Conditioning ◽  
Good Agreement

This paper discusses the design and manufacturing of a thin polymer spherical adaptive reflector of diameter D=200 mm, controlled by an array of 25 independent electrodes arranged in a keystone configuration actuating a thin film of PVDF-TrFE in d31-mode. The 5 μm layer of electrostrictive material is spray-coated. The results of the present study confirm that the active material can be modelled by a unidirectional quadratic model and that excellent properties can be achieved if the material is properly annealed. The experimental influence functions of the control electrodes are determined by a quasi-static harmonic technique; they are in good agreement with the numerical simulations and their better circular symmetry indicates a clear improvement in the manufacturing process, as compared to a previous study. The low order optical modes can be reconstructed by combining the 25 influence functions; a regularization technique is used to alleviate the ill-conditioning of the Jacobian and allow to approximate the optical modes with reasonable voltages.

General theory of optical reflection from a thin film on a solid and its application to heteroepitaxy

2007 ◽  
Vol 75 (24) ◽  
Author(s):  
X. D. Zhu ◽  
Y. Y. Fei ◽  
X. Wang ◽  
H. B. Lu ◽  
G. Z. Yang
Keyword(s):  
Thin Film ◽  
General Theory ◽  
Optical Reflection

scholarly journals Microfluidic detection and analysis by integration of thermocapillary actuation with a thin-film optical waveguide

2005 ◽  
Vol 86 (18) ◽  
pp. 184101 ◽  
Author(s):  
Joseph P. Valentino ◽  
Sandra M. Troian ◽  
Sigurd Wagner
Keyword(s):  
Thin Film ◽  
Optical Waveguide

Cerium dioxide thin film optical waveguides

1992 ◽  
Vol 24 (5) ◽  
pp. 263-266 ◽  
Author(s):  
P.F. Wahid ◽  
K.B. Sundaram ◽  
P.J. Sisk
Keyword(s):  
Thin Film ◽  
Optical Waveguides ◽  
Cerium Dioxide

Polyaniline thin film optical waveguides for integrated optics and VLSI prepared by vacuum evaporation technique

2002 ◽  
Vol 13 (6) ◽  
pp. 475-480 ◽  
Author(s):  
R. P. Sharma ◽  
M. S. Raghuvanshi ◽  
S. V. Bhavsar ◽  
A. R. Patil ◽  
S. C. K. Misra
Keyword(s):  
Thin Film ◽  
Integrated Optics ◽  
Optical Waveguides ◽  
Vacuum Evaporation ◽  
Evaporation Technique ◽  
Vacuum Evaporation Technique
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