Optical Nanocomposites Containing Low Refractive Index MgF2 Nanoparticles

2021 ◽  
Author(s):  
Leonid Goldenberg ◽  
Mathias Köhler ◽  
Christian Dreyer ◽  
Tohralf Krahl ◽  
Erhard Kemnitz
Keyword(s):  
Refractive Index ◽  
Optical Waveguides ◽  
Planar Waveguide ◽  
Magnesium Fluoride ◽  
Monomer Mixture ◽  
Acrylate Monomer ◽  
Optical Propagation ◽  
Propagation Losses ◽  
Planar Optical Waveguides ◽  
Low Refractive Index

Nanoparticles composed of magnesium fluoride were successfully introduced into polymer matrices used for the fabrication of planar optical waveguides. Optical layers without visible scattering were successfully prepared. The transparent nanocomposites were formulated by direct mixing of modified MgF2 nanoparticles with fluorinated co-polymer matrix or acrylate monomer mixture with a help of additional solvent. An addition of MgF2 nanoparticles results in decrease of refractive index and thermo-optic coefficient of the polymer but increases substantially the optical propagation losses for planar waveguide at 1547 nm.

Design and synthesis of low refractive index polymers for modulation in optical waveguides

1999 ◽  
Vol 13 (2) ◽  
pp. 205-209 ◽  
Author(s):  
D Bosc ◽  
A Rousseau ◽  
A Morand ◽  
P Benech ◽  
S Tedjini
Keyword(s):  
Refractive Index ◽  
Optical Waveguides ◽  
Design And Synthesis ◽  
Low Refractive Index

Magnesium fluoride as low-refractive index material for near-ultraviolet filters applied to optical sensors

Vacuum ◽  
2020 ◽  
Vol 181 ◽  
pp. 109673
Author(s):  
M.F. Silva ◽  
S. Pimenta ◽  
J.A. Rodrigues ◽  
J.R. Freitas ◽  
M. Ghaderi ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Sensors ◽  
Magnesium Fluoride ◽  
Near Ultraviolet ◽  
Refractive Index Material ◽  
Low Refractive Index

FABRICATION OF MACH-ZEHNDER INTERFEROMETOR BASED ON PLANAR WAVEGUIDE FOR THE APPLICATION OF BIOSENSORS

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1891-1896 ◽  
Author(s):  
JUN-HYONG KIM ◽  
HOE-YOUNG YANG ◽  
HYUN-YONG LEE
Keyword(s):  
Refractive Index ◽  
Optical Waveguides ◽  
Planar Waveguide ◽  
Refractive Index Change ◽  
Optical Power ◽  
Input Power ◽  
Design Rule ◽  
Integrated Optical ◽  
The Difference ◽  
Planar Lightwave

In this paper, designed and simulated Power Splitter (PS) integrated Mach-Zehnder interferometer (MZI) based planar waveguide devices (which is called here a PS-MZI). Moreover, we fabricated optical waveguide based on the PS-MZI for application to the biosensor. The integrated optical structure is sensitive to refractive index change induced due to the interaction of the evanescent field with an immobilized biological sample placed on one of the two arms of the interferometer. The PS-MZI sensor was preceded by a Y -junction, which splits the input power between the sensor and a reference branch to minimize the effect of optical power variations. The waveguide were optimized at a wavelength of 1550 nm and fabricated according to the design rule of 0.45 delta%, which is the difference of refractive index between the core and clad. The fabrication of PS-MZI optical waveguides was performed by a conventional planar lightwave circuit (PLC) fabrication process. The PS-MZI optical waveguides were measured of the optical characteristics for the application of biosensors.

Epitaxial Growth And Optical Properties of Sol-Gel (Pb,La)Ti03 Thin Films for Waveguides

1997 ◽  
Vol 474 ◽  
Author(s):  
Junmo Koo ◽  
Changho Lee ◽  
Kwangsoo No ◽  
Byeong-Soo Bae
Keyword(s):  
Thin Films ◽  
Surface Roughness ◽  
Refractive Index ◽  
Laser Light ◽  
Sol Gel ◽  
Surface Scattering ◽  
Sapphire Substrates ◽  
Lanthanum Titanate ◽  
Propagation Losses ◽  
Low Refractive Index

ABSTRACTLead lanthanum titanate thin films have been prepared on MgO and sapphire substrates by sol-gel method. XRD analyses confirm that the PLT films fabricated on MgO(lOO) and c-plane sapphire substrates grow preferentially with (100) and (111) orientations, respectively. The PLT films with a high La content have a low refractive index due to the decrease of the refractive index anisotropy. The propagation losses in PLT films measured, using He-Ne laser light and the prism coupling method decrease as the La content increases. This is due to the reduction of the refractive index anisotropy and the surface scattering by the surface roughness as a function of La content in the film.

Synthesis of UV-Writing Fluorinated Polymer for Organic Optical Waveguide

2013 ◽  
Vol 690-693 ◽  
pp. 1604-1608
Author(s):  
Xu Fei ◽  
Shu Qi Fan ◽  
Jing Tian ◽  
Yi Wang
Keyword(s):  
Refractive Index ◽  
Epoxy Resin ◽  
Polymer Film ◽  
Optical Waveguide ◽  
Optical Waveguides ◽  
Uv Light ◽  
Uv Exposure ◽  
Propagation Losses ◽  
Channel Waveguides ◽  
Uv Writing

UV-Writing Poly(FPS-co-GMA) for optical waveguide was synthesized and the refractive index of the polymer film was tuned in the range of 1.460~1.555 at 1550 nm by mixing with bis-phenol-A epoxy resin. The film, which was made by spinning coated the Poly(FPS-co-GMA) with photo initiator, had good UV light lithograph sensitivity. The optical waveguides with very smooth top surface were fabricated from the resulting polymer by direct UV exposure and chemical development. The propagation losses of the channel waveguides were measured to be below 0.6 dB/cm at 1550 nm.

Optical Characteristics of Planar Waveguides in Simox Structures

1991 ◽  
Vol 244 ◽  
Author(s):  
G T Reed ◽  
A G Rickman ◽  
B L Weiss ◽  
F Namavar ◽  
E Cortesi ◽  
...  
Keyword(s):  
Optical Waveguides ◽  
Planar Waveguides ◽  
Propagation Loss ◽  
Optical Characteristics ◽  
Propagation Losses ◽  
Planar Optical Waveguides

ABSTRACTResults are presented for the propagation loss of planar optical waveguides fabricated in SIMOX structures with Si overlayers whose thickness varies from 0.57 μm to 6.0 μm. The results demonstrate that thick Si overlayers are required to produce propagation losses below 1 dB/cm. In addition, the results of the coupling between two vertically integrated waveguides formed using two buried SiO2 layers are also reported.

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