Mode conversion in magneto-optic rib waveguide made by silica matrix doped with magnetic nanoparticles

2016 ◽  
Vol 363 ◽  
pp. 138-144 ◽  
Author(s):  
Mounir Bouras ◽  
Abdessalem Hocini
Keyword(s):  
Magnetic Nanoparticles ◽  
Mode Conversion ◽  
Silica Matrix ◽  
Rib Waveguide ◽  
Magneto Optic

Mode conversion in magneto‐optic waveguides subjected to a periodic Permalloy structure

1974 ◽  
Vol 24 (6) ◽  
pp. 265-267 ◽  
Author(s):  
S. C.‐C. Tseng ◽  
A. R. Reisinger ◽  
E. A. Giess ◽  
C. G. Powell
Keyword(s):  
Mode Conversion ◽  
Magneto Optic

Birefringence properties of magneto-optic rib waveguide as a function of refractive index

2013 ◽  
Vol 12 (1) ◽  
pp. 50-55 ◽  
Author(s):  
Abdesselam Hocini ◽  
Ahmed Bouchelaghem ◽  
Djamel Saigaa ◽  
Mounir Bouras ◽  
Touraya Boumaza ◽  
...  
Keyword(s):  
Refractive Index ◽  
Rib Waveguide ◽  
Magneto Optic

Magneto-photonic crystal microcavities based on magnetic nanoparticles embedded in Silica matrix

2017 ◽  
Vol 384 ◽  
pp. 111-117 ◽  
Author(s):  
Abdesselam Hocini ◽  
Riad Moukhtari ◽  
Djamel Khedrouche ◽  
Ahmed Kahlouche ◽  
Mehdi Zamani
Keyword(s):  
Photonic Crystal ◽  
Magnetic Nanoparticles ◽  
Silica Matrix ◽  
Photonic Crystal Microcavities

scholarly journals Fenton and Photo-Fenton Nanocatalysts Revisited from the Perspective of Life Cycle Assessment

Catalysts ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 23 ◽  
Author(s):  
Sara Feijoo ◽  
Jorge González-Rodríguez ◽  
Lucía Fernández ◽  
Carlos Vázquez-Vázquez ◽  
Gumersindo Feijoo ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Environmental Impacts ◽  
Silica Matrix ◽  
Heterogeneous Fenton ◽  
Stabilizing Agents ◽  
Fe3o4 Nps ◽  
Magnetite Fe3o4 ◽  
Interesting Approach ◽  
Production Strategy ◽  
Potential Use

This study provides an overview of the environmental impacts associated with the production of different magnetic nanoparticles (NPs) based on magnetite (Fe3O4), with a potential use as heterogeneous Fenton or photo-Fenton catalysts in wastewater treatment applications. The tendency of Fe3O4 NPs to form aggregates in water makes necessary their decoration with stabilizing agents, in order to increase their catalytic activity. Different stabilizing agents were considered in this study: poly(acrylic acid) (PAA), polyethylenimine (PEI) and silica (SiO2), as well as the immobilization of the magnetite-based catalysts in a mesoporous silica matrix, SBA-15. In the case of photo-Fenton catalysts, combinations of magnetite NPs with semiconductors were evaluated, so that magnetic recovery of the nanomaterials is possible, thus allowing a safe discharge free of NPs. The results of this study suggest that magnetic nanoparticles coated with PEI or PAA were the most suitable option for their applications in heterogeneous Fenton processes, while ZnO-Fe3O4 NPs provided an interesting approach in photo-Fenton. This work showed the importance of identifying the relevance of nanoparticle production strategy in the environmental impacts associated with their use.

Experimental investigation of the nonreciprocal phase shift of a transverse electric mode in a magneto-optic rib waveguide

1999 ◽  
Vol 74 (20) ◽  
pp. 2918-2920 ◽  
Author(s):  
M. Fehndrich ◽  
A. Josef ◽  
L. Wilkens ◽  
J. Kleine–Börger ◽  
N. Bahlmann ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Phase Shift ◽  
Transverse Electric ◽  
Rib Waveguide ◽  
Electric Mode ◽  
Transverse Electric Mode ◽  
Magneto Optic

Magneto-optic Modulator Fabricated Using Polymer-Coated Magnetic Nanoparticles with 4.75dB Extinction Ratio

2021 ◽  
Author(s):  
Shelbi L. Jenkins ◽  
Kyle Carothers ◽  
Sasaan A. Showghi ◽  
Jeffrey Pyun ◽  
Robert A. Norwood
Keyword(s):  
Magnetic Nanoparticles ◽  
Extinction Ratio ◽  
Magneto Optic

Fabrication Processes of SOI Structure for Optical Nonreciprocal Devices

2018 ◽  
Vol 777 ◽  
pp. 107-112
Author(s):  
Salinee Choowitsakunlert ◽  
Kenji Takagiwa ◽  
Takuya Kobashigawa ◽  
Nariaki Hosoya ◽  
Rardchawadee Silapunt ◽  
...  
Keyword(s):  
Adhesive Bonding ◽  
Mode Conversion ◽  
Silicon On Insulator ◽  
Radiation Mode ◽  
Optical Isolator ◽  
Optic Waveguide ◽  
Iron Garnet ◽  
Relationship Of ◽  
The Relationship ◽  
Magneto Optic

Fabrication processes of a magneto-optic waveguide with a Si guiding layer for an optical isolator employing a nonreciprocal guided-radiation mode conversion are investigated. The optical isolator is constructed on a silicon-on-insulator (SOI) structure. The magneto-optic waveguide is fabricated by bonding the Si guiding layer with a cerium-substituted yttrium iron garnet (Ce:YIG). The relationship of waveguide geometric parameters is determined at a wavelength of 1550 nm. The results show that larger tolerance for isolator operation can be obtained at smaller gaps between Si and Ce:YIG. Bonding processes including photosensitive adhesive bonding and surface activated bonding are then compared. It is found that the surface activated bonding process is easier to control and more promising than the photosensitive adhesive bonding.

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