Fabrication of Optical Wave-Guides in Silica-on-Silicon by Nickel Electroplating and Conventional Reactive Ion Etching

1999 ◽  
Vol 38 (Part 1, No. 10) ◽  
pp. 6150-6153 ◽  
Author(s):  
Anna Massimi ◽  
Enzo Di Fabrizio ◽  
Massimo Gentili ◽  
Davide Piccinin ◽  
Mario Martinelli
Keyword(s):  
Reactive Ion Etching ◽  
Ion Etching ◽  
Optical Wave ◽  
Nickel Electroplating ◽  
Wave Guides ◽  
Optical Wave Guides

Sub-half-micrometre gratings using e-beam lithography and reactive ion etching

1991 ◽  
Vol 69 (3-4) ◽  
pp. 508-511
Author(s):  
M. Fallahi ◽  
R. Barber
Keyword(s):  
Electron Beam ◽  
Electron Beam Lithography ◽  
Light Attenuation ◽  
Reactive Ion Etching ◽  
Single Layer ◽  
Second Order ◽  
High Quality ◽  
Ion Etching ◽  
Wave Guides

A simple, manufacturable technique for the generation of sub-half-micrometre gratings in GaAs is demonstrated. The technique uses a single layer of polymethylmethacrylate photoresist, electron-beam lithography, and BCl3–He reactive ion etching to achieve high-quality second-order gratings. Good light attenuation properties are demonstrated for planar and ridge wave guides.

scholarly journals Real-time detection of DNA hybridization and melting on oligonucleotide arrays by using optical wave guides.

1995 ◽  
Vol 92 (14) ◽  
pp. 6379-6383 ◽  
Author(s):  
D. I. Stimpson ◽  
J. V. Hoijer ◽  
W. T. Hsieh ◽  
C. Jou ◽  
J. Gordon ◽  
...  
Keyword(s):  
Real Time ◽  
Dna Hybridization ◽  
Oligonucleotide Arrays ◽  
Optical Wave ◽  
Wave Guides ◽  
Real Time Detection ◽  
Optical Wave Guides

Damage profile and mode observation in LiTaO3 by low-energy H+ ions

2001 ◽  
Vol 79 (6) ◽  
pp. 921-927
Author(s):  
K -M Wang ◽  
H Hu ◽  
F Chen ◽  
F Lu ◽  
J -H Zhang ◽  
...  
Keyword(s):  
Lower Energy ◽  
Rutherford Backscattering ◽  
Low Energy ◽  
Coupling Method ◽  
Optical Wave ◽  
Wave Guides ◽  
Transport Of Ions ◽  
Prism Coupling ◽  
Optical Wave Guides

LiTaO3 samples were implanted with 50, 80, 120, and 150 keV H + ions. The damage profiles in LiTaO3 induced by H+ ions were investigated using the Rutherford backscattering/channeling technique. We used TRIM (transport of ions in matter) to simulate it. It was found that the shape of the experimental damage profile was similar to one predicted by TRIM'98, but the experimental damage ratio (NDN) was higher than the calculated damage ratio based on TRIM'98. The modes in LiTaO3 were measured by a prism-coupling method for all samples. The modes were observed only for LiTaO3 implanted with 80, 120, and 150 keV H+ ions. The present result shows that optical wave guides in LiTaO3 can be formed by lower energy H+ ions. PACS Nos.: 61.72-y, 61.82-d, 61.85+p, 78.20Ci

3-D Woven Composites Instrumented With EFPI Fiber Optic Sensors

2002 ◽  
Author(s):  
Alexander Bogdanovich ◽  
Donald Wigent ◽  
Thomas J. Whitney ◽  
Paul A. Clark
Keyword(s):  
Fiber Optic ◽  
Mechanical Damage ◽  
Polymeric Composite ◽  
Fiber Optic Sensors ◽  
Woven Composites ◽  
Optical Wave ◽  
Strain Monitoring ◽  
Novel Approach ◽  
Wave Guides ◽  
Optical Wave Guides

A novel approach to continuous health monitoring of polymeric composite materials and structural elements using embedded Extrinsic Fabry-Perot Interferometers (EFPI) is proposed and validated. The proof of concept includes several consecutive steps. First, it is verified that simple optical wave guides survived a regular 3-D weaving process. Then EFPI sensor assemblies are manually incorporated into the preforms and it is verified that they are functional. Next step is resin infusion of instrumented preforms using VARTM method, followed by investigation of possible mechanical damage to sensor leads. Finally, test specimens are fabricated, and four-point bending tests are performed. The internal strain monitoring results provided by the embedded fiber optic sensors are compared to the data from surface foil gages. The developed approach validates, particularly, the possibility of continuous through-thickness strain monitoring, which is crucial for composite bonded and bolted joints, components with holes, openings, stiffeners, and other cases of high strain gradients.

The Application Of Optical Wave Guides To Army Communications

1975 ◽  
Author(s):  
Larry Dworkin ◽  
Louis Coryell ◽  
R. Dragoo
Keyword(s):  
Optical Wave ◽  
Wave Guides ◽  
Optical Wave Guides
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