Radiation resistance of fluorophosphate glasses for high performance optical fiber in the ultraviolet region

1997 ◽  
Vol 81 (8) ◽  
pp. 3354-3362 ◽  
Author(s):  
Xuelu Zou ◽  
Hisayoshi Toratani
Keyword(s):  
Optical Fiber ◽  
Radiation Resistance ◽  
High Performance ◽  
Ultraviolet Region

scholarly journals Biosensing with optical fiber gratings

Nanophotonics ◽  
2017 ◽  
Vol 6 (4) ◽  
pp. 663-679 ◽  
Author(s):  
Francesco Chiavaioli ◽  
Francesco Baldini ◽  
Sara Tombelli ◽  
Cosimo Trono ◽  
Ambra Giannetti
Keyword(s):  
Optical Fiber ◽  
Single Molecule ◽  
High Performance ◽  
Performance Metrics ◽  
Surrounding Medium ◽  
Remote Measurement ◽  
Fiber Gratings ◽  
Practical Applications ◽  
Technology Platforms ◽  
Optical Fiber Gratings

AbstractOptical fiber gratings (OFGs), especially long-period gratings (LPGs) and etched or tilted fiber Bragg gratings (FBGs), are playing an increasing role in the chemical and biochemical sensing based on the measurement of a surface refractive index (RI) change through a label-free configuration. In these devices, the electric field evanescent wave at the fiber/surrounding medium interface changes its optical properties (i.e. intensity and wavelength) as a result of the RI variation due to the interaction between a biological recognition layer deposited over the fiber and the analyte under investigation. The use of OFG-based technology platforms takes the advantages of optical fiber peculiarities, which are hardly offered by the other sensing systems, such as compactness, lightness, high compatibility with optoelectronic devices (both sources and detectors), and multiplexing and remote measurement capability as the signal is spectrally modulated. During the last decade, the growing request in practical applications pushed the technology behind the OFG-based sensors over its limits by means of the deposition of thin film overlays, nanocoatings, and nanostructures, in general. Here, we review efforts toward utilizing these nanomaterials as coatings for high-performance and low-detection limit devices. Moreover, we review the recent development in OFG-based biosensing and identify some of the key challenges for practical applications. While high-performance metrics are starting to be achieved experimentally, there are still open questions pertaining to an effective and reliable detection of small molecules, possibly up to single molecule, sensing in vivo and multi-target detection using OFG-based technology platforms.

Heat-treatment effect of fused-silica optical fiber for improvement of radiation resistance

2004 ◽  
Author(s):  
Kentaro Toh ◽  
Tatsuo Shikama ◽  
Shinji Nagata ◽  
Bun Tsuchiya ◽  
M. Yamauchi ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Optical Fiber ◽  
Treatment Effect ◽  
Radiation Resistance ◽  
Fused Silica ◽  
Silica Optical Fiber

Low-Cost and High-Performance Optical Fiber-Based Sensor for Liquid Level Monitoring

2019 ◽  
Vol 19 (13) ◽  
pp. 4882-4888 ◽  
Author(s):  
Joana Martins ◽  
Camilo A. R. Diaz ◽  
M. Fatima Domingues ◽  
Rute A. S. Ferreira ◽  
Paulo Antunes ◽  
...  
Keyword(s):  
Optical Fiber ◽  
High Performance ◽  
Low Cost ◽  
Liquid Level ◽  
Level Monitoring

Gamma-Ray Dose-Rate Dependence on Radiation Resistance of Specialty Optical Fiber with Inner Cladding Layers

2016 ◽  
pp. 51-65 ◽  
Author(s):  
Seongmin Ju ◽  
Youngwoong Kim ◽  
Seongmook Jeong ◽  
Jong-Yeol Kim ◽  
Nam-Ho Lee ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Dose Rate ◽  
Radiation Resistance ◽  
Gamma Ray ◽  
Rate Dependence ◽  
Cladding Layers

Specialty High Performance Coatings for Optical Fiber Applications via Perfluorocyclobutyl (PFCB) Aryl Ether Polymers

2007 ◽  
Vol 1030 ◽  
Author(s):  
Stephen M. Budy ◽  
Scott T. Iacono ◽  
Wade Hawkins ◽  
Paul Foy ◽  
John Ballato ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
High Performance ◽  
Polymer Coatings ◽  
Aryl Ether ◽  
Molecular Weights ◽  
Higher Temperature ◽  
Optical Applications ◽  
Optical Fiber Applications ◽  
Fiber Coatings

AbstractThere is a growing need for optical fiber coatings that can sustain higher temperatures than present materials permit. To date, polyimides are used predominantly but they generally are difficult to process and usually require multiple depositions to achieve the desired film thickness. Perfluorocyclobutyl (PFCB) aryl ether polymers have demonstrated much success as processable and amorphous fluoropolymers,[1] with particular emphasis on high performance optical applications.[2] This work discusses recent efforts into perfluorocyclobutyl aryl ether polymer-based optical fiber coatings.[3] A series of silica-based optical fibers were drawn with differing PFCB polymer coatings compositions and molecular weights on a Heathway draw tower. Results include a more than doubled usage temperature of coating (decomposition temperatures (Td) in nitrogen and air were above 450 °C) without affecting fiber mechanical properties and comparable isothermal stability to conventional coatings, except with a >150 °C higher temperature. Preliminary results of the first successful coating of optical fibers by PFCB polymers will be presented herein, as well as future endeavors.

Novel Optical Fiber Installation by Use of Spiral Airflow

1992 ◽  
Vol 114 (3) ◽  
pp. 375-378 ◽  
Author(s):  
K. Horii ◽  
Y. Matsumae ◽  
K. Ohsumi ◽  
X. M. Cheng ◽  
S. Kage ◽  
...  
Keyword(s):  
Optical Fiber ◽  
High Performance ◽  
Spiral Structure ◽  
Tube Wall ◽  
Coanda Effect ◽  
Spiral Flow ◽  
Annular Jet ◽  
Annular Slit ◽  
Coandǎ Effect ◽  
Downstream Flow

A high performance apparatus for installing optical fiber has been developed. With this apparatus, a 2 mm-diameter optical fiber was blown through a 6 mm-diameter rolled tube over a distance of 1200 meters, which is longer than the 700 meters achieved by the best conventional techniques. The heart of the apparatus is a novel nozzle with an annular slit and a conical cylinder to create a spiral airflow. In the spiral flow, the back flow of air is prevented due to the Coanda effect and the fiber scraping along the tube wall is minimized, owing to the ordered flow structure, leading to effective fiber installation. To obtain a spiral flow, pressurized air is forced into the buffer area of a nozzle and then through the angled annular slit into the tube entrance. Due to the Coanda effect of the annular jet from the slit attaching to the nozzle walls and the conical cylinder, the downstream flow in the tube develops a highly stable spiral structure with a steep axial velocity distribution that is more ordered than typical turbulent tube flows at the same mass-flow rate.

High-Performance 650 nm Resonant-Cavity Light-Emitting Diodes for Plastic Optical-Fiber Application

2007 ◽  
Vol 46 (4B) ◽  
pp. 2450-2453 ◽  
Author(s):  
Yea-Chen Lee ◽  
Chia-En Lee ◽  
Bo-Siao Cheng ◽  
Tien-Chang Lu ◽  
Hao-Chung Kuo ◽  
...  
Keyword(s):  
Optical Fiber ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Resonant Cavity ◽  
Plastic Optical Fiber ◽  
Light Emitting

High-performance biofilm photobioreactor based on a GeO2–SiO2–chitosan-medium-coated hollow optical fiber

2014 ◽  
Vol 39 (19) ◽  
pp. 10016-10027 ◽  
Author(s):  
Qiang Liao ◽  
Nian-Bing Zhong ◽  
Xun Zhu ◽  
Rong Chen
Keyword(s):  
Optical Fiber ◽  
High Performance
Sign in / Sign up

Export Citation Format

Share Document