scholarly journals Engineering nanoparticle features to tune Rayleigh scattering in nanoparticles-doped optical fibers

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Victor Fuertes ◽  
Nicolas Grégoire ◽  
Philippe Labranche ◽  
Stéphane Gagnon ◽  
Ruohui Wang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Long Range ◽  
Optical Fibers ◽  
Rayleigh Scattering ◽  
Distributed Sensing ◽  
Optical Losses ◽  
Sensing Applications ◽  
Fiber Fabrication ◽  
Silica Fibers ◽  
Potential Applications

AbstractRayleigh scattering enhanced nanoparticles-doped optical fibers are highly promising for distributed sensing applications, however, the high optical losses induced by that scattering enhancement restrict considerably their sensing distance to few meters. Fabrication of long-range distributed optical fiber sensors based on this technology remains a major challenge in optical fiber community. In this work, it is reported the fabrication of low-loss Ca-based nanoparticles doped silica fibers with tunable Rayleigh scattering for long-range distributed sensing. This is enabled by tailoring nanoparticle features such as particle distribution size, morphology and density in the core of optical fibers through preform and fiber fabrication process. Consequently, fibers with tunable enhanced backscattering in the range 25.9–44.9 dB, with respect to a SMF-28 fiber, are attained along with the lowest two-way optical losses, 0.1–8.7 dB/m, reported so far for Rayleigh scattering enhanced nanoparticles-doped optical fibers. Therefore, the suitability of Ca-based nanoparticles-doped optical fibers for distributed sensing over longer distances, from 5 m to more than 200 m, becomes possible. This study opens a new path for future works in the field of distributed sensing, since these findings may be applied to other nanoparticles-doped optical fibers, allowing the tailoring of nanoparticle properties, which broadens future potential applications of this technology.

scholarly journals Kilometers Long Graphene-Coated Optical Fibers for Fast Thermal Sensing

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yiyong Guo ◽  
Bing Han ◽  
Junting Du ◽  
Shanshan Cao ◽  
Hua Gao ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Optics ◽  
Optical Fibers ◽  
Rayleigh Scattering ◽  
Graphene Nanosheets ◽  
Pulse Generation ◽  
Thermal Imager ◽  
Long Distance ◽  
Fiber Sensing ◽  
Sensing Applications

The combination of optical fiber with graphene has greatly expanded the application regimes of fiber optics, from dynamic optical control and ultrafast pulse generation to high precision sensing. However, limited by fabrication, previous graphene-fiber samples are typically limited in the micrometer to centimeter scale, which cannot take the inherent advantage of optical fibers—long-distance optical transmission. Here, we demonstrate kilometers long graphene-coated optical fiber (GCF) based on industrial graphene nanosheets and coating technique. The GCF shows unusually high thermal diffusivity of 24.99 mm2 s-1 in the axial direction, measured by a thermal imager directly. This enables rapid thermooptical response both in optical fiber Bragg grating sensors at one point (18-fold faster than conventional fiber) and in long-distance distributed fiber sensing systems based on backward Rayleigh scattering in optical fiber (15-fold faster than conventional fiber). This work realizes the industrial-level graphene-fiber production and provides a novel platform for two-dimensional material-based optical fiber sensing applications.

scholarly journals Infiltrated Photonic Crystal Fibers for Sensing Applications

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4263 ◽  
Author(s):  
José Algorri ◽  
Dimitrios Zografopoulos ◽  
Alberto Tapetado ◽  
David Poudereux ◽  
José Sánchez-Pena
Keyword(s):  
Photonic Crystal ◽  
Optical Fibers ◽  
Photonic Crystal Fibers ◽  
Scale Up ◽  
Dispersion Parameters ◽  
Power Pulse ◽  
Sensing Applications ◽  
Potential Applications ◽  
Crystal Fibers ◽  
Bose Einstein

Photonic crystal fibers (PCFs) are a special class of optical fibers with a periodic arrangement of microstructured holes located in the fiber’s cladding. Light confinement is achieved by means of either index-guiding, or the photonic bandgap effect in a low-index core. Ever since PCFs were first demonstrated in 1995, their special characteristics, such as potentially high birefringence, very small or high nonlinearity, low propagation losses, and controllable dispersion parameters, have rendered them unique for many applications, such as sensors, high-power pulse transmission, and biomedical studies. When the holes of PCFs are filled with solids, liquids or gases, unprecedented opportunities for applications emerge. These include, but are not limited in, supercontinuum generation, propulsion of atoms through a hollow fiber core, fiber-loaded Bose–Einstein condensates, as well as enhanced sensing and measurement devices. For this reason, infiltrated PCF have been the focus of intensive research in recent years. In this review, the fundamentals and fabrication of PCF infiltrated with different materials are discussed. In addition, potential applications of infiltrated PCF sensors are reviewed, identifying the challenges and limitations to scale up and commercialize this novel technology.

scholarly journals Suspended-Core Microstructured Polymer Optical Fibers and Potential Applications in Sensing

Sensors ◽  
2019 ◽  
Vol 19 (16) ◽  
pp. 3449 ◽  
Author(s):  
Wanvisa Talataisong ◽  
Rand Ismaeel ◽  
Martynas Beresna ◽  
Gilberto Brambilla
Keyword(s):  
Optical Fibers ◽  
Material Selection ◽  
Biological Species ◽  
Single Step ◽  
3D Printer ◽  
Sensing Applications ◽  
Wide Range ◽  
Potential Applications ◽  
Pressure Chemical ◽  
Polymer Optical Fibers

The study of the fabrication, material selection, and properties of microstructured polymer optical fibers (MPOFs) has long attracted great interest. This ever-increasing interest is due to their wide range of applications, mainly in sensing, including temperature, pressure, chemical, and biological species. This manuscript reviews the manufacturing of MPOFs, including the most recent single-step process involving extrusion from a modified 3D printer. MPOFs sensing applications are then discussed, with a stress on the benefit of using polymers.

scholarly journals Tests under irradiation of optical fibers and cables devoted to corium monitoring in case of severe accident in a Nuclear Power Plant

2020 ◽  
Vol 225 ◽  
pp. 08006
Author(s):  
G. Cheymol ◽  
L. Maurin ◽  
L. Remy ◽  
V. Arounassalame ◽  
H. Maskrot ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Nuclear Power ◽  
Carbon Coating ◽  
Hydrogen Diffusion ◽  
Coating Layer ◽  
Distributed Sensing ◽  
Severe Accident ◽  
Normal Operation ◽  
The Status

The DISCOMS project, which stands for “DIstributed Sensing for COrium Monitoring and Safety”, considers the potential of distributed sensing technologies, based on remote instrumentations and Optical Fiber Sensing cables embedded into the concrete floor under the reactor vessel, to monitor the status of this third barrier of confinement. This paper focuses on the selection and testing of singlemode (SM) optical fibers with limited RIA (Radiation Induced Attenuation) to be compliant with remote distributed instruments optical budgets, the ionizing radiation doses to sustain, and their reduction provided by the concrete basemat shielding. The tests aimed at exposing these fibers and the corresponding sensitive optical cables, to the irradiation doses expected during the normal operation of the reactor (up to 60 years for the European Pressurized Reactor), followed by a severe accident. Several gamma and mixed (neutron-gamma) irradiations were performed at CEA Saclay facilities: POSÉÏDON irradiator and ISIS reactor, up to a gamma cumulated dose of about 2 MGy and fast neutron fluence (E > 1 MeV) of 6 x 1015 n/cm2. The first gamma test permitted to assess the RIA at various optical wavelengths, and to select three radiation tolerant singlemode fibers (RIA < 5 dB/100 m, at 1550 nm operating wavelength). The second one was performed on voluminous strands of sensitive cables encapsulating the selected optical fibers, up to approximately the same accumulated dose, at two temperatures: 30°C and 80°C. A significant increase of the RIA, without any saturation tendency, appeared for fibers inserted into cables, correlated with the increase of the hydroxyl attenuation peak at 1380 nm. Molecular hydrogen generated by the radiolysis of compounds of the cable is at the origin of this phenomenon. A third gamma irradiation run permitted to measure the radiolytic hydrogen production yield of some compounds of a dedicated temperature cable sample. The efficiency of a carbon coating layer over the silica cladding, acting as a barrier against hydrogen diffusion, was also successfully confirmed. Finally, the efficiency of this carbon coating layer has also been tested under neutron irradiation, then qualified as a protection barrier against hydrogen diffusion in the optical fiber cores.

scholarly journals Исследование оптических свойств многомодового кварцевого оптического волокна с отражающей оболочкой из фторированного термопластичного полимера

2019 ◽  
Vol 127 (9) ◽  
pp. 477
Author(s):  
А.А. Маковецкий ◽  
А.А. Замятин ◽  
Д.В. Ряховский
Keyword(s):  
Optical Properties ◽  
Optical Fiber ◽  
Optical Fibers ◽  
Scattered Radiation ◽  
Fiber Length ◽  
Numerical Aperture ◽  
Optical Losses ◽  
Laser Medicine ◽  
Propagation Of Light ◽  
Absorption Of Light

Optical properties silica - polymeric optical fiber with a core with a diameter of 430 microns and the reflecting cover 70 microns thick from thermoplastic copolymer of a tetraftoretilen with ethylene (Tefzel brand) are experimentally investigated. The polymeric cover is applied on silica fiber with applicator from polimer melt directly on drowing tower. Optical losses of the fiber, a numerical aperture and its dependence on fiber length are measured. It is established that at propagation of light in fiber its noticeable scattering is observed. It is connected with crystallinity of polymeric cover. Distribution of intensity of scattered radiation along an axis of fiber and an indicatrix of dispersion of radiation by a coating are measured. Relative deposits of dispersion and absorption of light in a cover at the general optical losses of fiber are estimated. The possibility of use of optical fibers of this structure in laser medicine is considered.

scholarly journals Long-Range Distributed Solar Irradiance Sensing Using Optical Fibers

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 908 ◽  
Author(s):  
Regina Magalhães ◽  
Luis Costa ◽  
Sonia Martin-Lopez ◽  
Miguel Gonzalez-Herraez ◽  
Alejandro F. Braña ◽  
...  
Keyword(s):  
Solar Energy ◽  
Optical Fiber ◽  
Real Time ◽  
Long Range ◽  
Optical Fibers ◽  
Solar Irradiance ◽  
High Sensitivity ◽  
Ground Level ◽  
Solar Simulator ◽  
Distributed Sensor

Until recently, the amount of solar irradiance reaching the Earth surface was considered to be a steady value over the years. However, there is increasing observational evidence showing that this quantity undergoes substantial variations over time, which need to be addressed in different scenarios ranging from climate change to solar energy applications. With the growing interest in developing solar energy technology with enhanced efficiency and optimized management, the monitoring of solar irradiance at the ground level is now considered to be a fundamental input in the pursuit of that goal. Here, we propose the first fiber-based distributed sensor able of monitoring ground solar irradiance in real time, with meter scale spatial resolutions over distances of several tens of kilometers (up to 100 km). The technique is based on an optical fiber reflectometry technique (CP-ϕOTDR), which enables real time and long-range high-sensitivity bolometric measurements of solar radiance with a single optical fiber cable and a single interrogator unit. The method is explained and analyzed theoretically. A validation of the method is proposed using a solar simulator irradiating standard optical fibers, where we demonstrate the ability to detect and quantify solar irradiance with less than a 0.1 W/m2 resolution.

scholarly journals Long-Range OFDR-Based Distributed Vibration Optical Fiber Sensor by Multicharacteristics of Rayleigh Scattering

2017 ◽  
Vol 9 (5) ◽  
pp. 1-10 ◽  
Author(s):  
Zhenyang Ding ◽  
Di Yang ◽  
Kun Liu ◽  
Junfeng Jiang ◽  
Yang Du ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Long Range ◽  
Rayleigh Scattering ◽  
Optical Fiber Sensor ◽  
Fiber Sensor

Raman Spectroscopy over Optical Fibers with the Use of a Near-IR FT Spectrometer

1988 ◽  
Vol 42 (8) ◽  
pp. 1558-1563 ◽  
Author(s):  
D. D. Archibald ◽  
L. T. Lin ◽  
D. E. Honigs
Keyword(s):  
Raman Spectroscopy ◽  
Optical Fiber ◽  
Optical Fibers ◽  
Scattered Light ◽  
Background Spectrum ◽  
Excitation Light ◽  
Analyte Signal ◽  
Near Ir ◽  
Potential Applications ◽  
Ft Ir

A commercial Fourier transform infrared (FT-IR) spectrometer was modified for remote near-IR Raman spectroscopy. In one configuration, a single optical fiber was used to guide the excitation light to the specimen and to collect scattered light from the specimen. In an alternative configuration, separate fibers were used for excitation and collection. The optical fiber probes were used to record the Raman spectra of both liquid and solid specimens. The Raman scattering of the optical fibers interfered with the analyte signal. This fiber interference was affected by the optical properties of the specimen and the optical sampling configuration. These interferences were partially removed by subtracting a background spectrum. Potential applications and improvements are discussed.

scholarly journals Biocompatible and Biodegradable Polymer Optical Fiber for Biomedical Application: A Review

Biosensors ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 472
Author(s):  
Yue Wang ◽  
Yu Huang ◽  
Hongyi Bai ◽  
Guoqing Wang ◽  
Xuehao Hu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Biodegradable Polymer ◽  
Biomedical Application ◽  
Clinical Applications ◽  
Polymer Optical Fiber ◽  
Comprehensive Overview ◽  
Broad Perspective ◽  
Flexible Fiber ◽  
Fiber Fabrication

This article discusses recent advances in biocompatible and biodegradable polymer optical fiber (POF) for medical applications. First, the POF material and its optical properties are summarized. Then, several common optical fiber fabrication methods are thoroughly discussed. Following that, clinical applications of biocompatible and biodegradable POFs are discussed, including optogenetics, biosensing, drug delivery, and neural recording. Following that, biomedical applications expanded the specific functionalization of the material or fiber design. Different research or clinical applications necessitate the use of different equipment to achieve the desired results. Finally, the difficulty of implanting flexible fiber varies with its flexibility. We present our article in a clear and logical manner that will be useful to researchers seeking a broad perspective on the proposed topic. Overall, the content provides a comprehensive overview of biocompatible and biodegradable POFs, including previous breakthroughs, as well as recent advancements. Biodegradable optical fibers have numerous applications, opening up new avenues in biomedicine.

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