Analysis of fiber-optic probes using graded-index fiber microlenses with non-ideal refractive index profiles

2012 ◽  
Author(s):  
Dirk Lorenser ◽  
Xiaojie Yang ◽  
David D. Sampson
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Graded Index ◽  
Fiber Optic Probes

scholarly journals Design of Silica Multimode Optical Fibers with Extremely Enlarged Core Diameter for Laser-Based Multi-Gigabit Short-Range Optical Networks

Photonics ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 37 ◽  
Author(s):  
Anton V. Bourdine ◽  
Vladimir A. Burdin ◽  
Vijay Janyani ◽  
Ashish Kumar Ghunawat ◽  
Ghanshyam Singh ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Networks ◽  
Optical Fibers ◽  
Short Range ◽  
Fiber Optic ◽  
Index Profile ◽  
Core Diameter ◽  
Simple Method ◽  
Graded Index ◽  
Comparison Results

This work presents an alternative fast and simple method for the design of a refractive index profile of silica multimode optical fibers (MMFs) with extremely enlarged core diameters of up to 100 µm for laser-based multi-gigabit short-range optical networks. We demonstrate some results of 100 µm core MMF graded index profile optimization performed by a proposed solution, which provides a selected mode staff differential mode delay (DMD) reduction over the “O”-band under particular launching conditions. Earlier on, a developed alternative model for a piecewise regular multimode fiber optic link operating in a few-mode regime for the computation of laser-excited optical pulse dynamics during its propagation over an irregular silica graded-index MMF with an extremely large core diameter, is utilized to estimate the potentiality of fiber optic links with the described MMFs. Here, we also present the comparison results of the simulation of 10GBase-LX optical signal transmission over 100 µm core MMFs with conventional and optimized graded-index refractive index profiles.

scholarly journals Spatial Frequency Multiplexing of Fiber-Optic Interferometric Refractive Index Sensors Based on Graded-Index Multimode Fibers

Sensors ◽  
2012 ◽  
Vol 12 (9) ◽  
pp. 12377-12385 ◽  
Author(s):  
Li Liu ◽  
Yuan Gong ◽  
Yu Wu ◽  
Tian Zhao ◽  
Hui-Juan Wu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Spatial Frequency ◽  
Fiber Optic ◽  
Multimode Fibers ◽  
Graded Index ◽  
Frequency Multiplexing ◽  
Refractive Index Sensors

scholarly journals Broadband Unidirectional Forward Scattering with High Refractive Index Nanostructures: Application in Solar Cells

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4421
Author(s):  
Ángela Barreda ◽  
Pablo Albella ◽  
Fernando Moreno ◽  
Francisco González
Keyword(s):  
Refractive Index ◽  
Solar Cells ◽  
Forward Direction ◽  
High Refractive Index ◽  
Incident Radiation ◽  
Antireflection Coating ◽  
Electromagnetic Response ◽  
Silicon Substrates ◽  
Graded Index ◽  
Dielectric Substrates

High refractive index dielectric (HRID) nanoparticles are a clear alternative to metals in nanophotonic applications due to their low losses and directional scattering properties. It has been demonstrated that HRID dimers are more efficient scattering units than single nanoparticles in redirecting the incident radiation towards the forward direction. This effect was recently reported and is known as the “near zero-backward” scattering condition, attained when nanoparticles forming dimers strongly interact with each other. Here, we analyzed the electromagnetic response of HRID isolated nanoparticles and aggregates when deposited on monolayer and graded-index multilayer dielectric substrates. In particular, we studied the fraction of radiation that is scattered towards a substrate with known optical properties when the nanoparticles are located on its surface. We demonstrated that HRID dimers can increase the radiation emitted towards the substrate compared to that of isolated nanoparticles. However, this effect was only present for low values of the substrate refractive index. With the aim of observing the same effect for silicon substrates, we show that it is necessary to use a multilayer antireflection coating. We conclude that dimers of HRID nanoparticles on a graded-index multilayer substrate can increase the radiation scattered into a silicon photovoltaic wafer. The results in this work can be applied to the design of novel solar cells.

Infrared fiber optic probes for evaluation of musculoskeletal tissue pathology

2014 ◽  
Author(s):  
Mugdha Padalkar ◽  
Cushla McGoverin ◽  
Quam Onigbanjo ◽  
Richard Spencer ◽  
Scott Barbash ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Musculoskeletal Tissue ◽  
Fiber Optic Probes

Design optimization of fiber optic probes for remote fluorescence spectroscopy

2009 ◽  
Vol 282 (14) ◽  
pp. 2676-2684 ◽  
Author(s):  
G.K. Bhowmick ◽  
Nutan Gautam ◽  
L.M. Gantayet
Keyword(s):  
Fluorescence Spectroscopy ◽  
Design Optimization ◽  
Fiber Optic ◽  
Fiber Optic Probes

High sensitive fiber-optic liquid refractive index tip sensor based on a simple inline hollow glass micro-sphere

2012 ◽  
Vol 171-172 ◽  
pp. 405-408 ◽  
Author(s):  
Bo Dong ◽  
Jianzhong Hao ◽  
Taishi Zhang ◽  
Jun Long Lim
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Hollow Glass ◽  
Micro Sphere

Polarization insensitive measurement of the fiber-optic nonlinear refractive index

2005 ◽  
Author(s):  
A. Fellegara ◽  
L. Amato ◽  
P. Sacchetto ◽  
P. Boffi ◽  
A. Melloni ◽  
...  
Keyword(s):  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Fiber Optic ◽  
Polarization Insensitive
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