Microsphere and Fiber Optics based Optical Sensors

Special Issue on Optomechatronics

Journal of Robotics and Mechatronics ◽

10.20965/jrm.2006.p0683 ◽

2006 ◽

Vol 18 (6) ◽

pp. 683-683

Author(s):

Shun'ichi Kaneko ◽

◽

Hyungsuck Cho ◽

Kazunori Umeda ◽

Takayuki Tanaka ◽

...

Keyword(s):

Machine Vision ◽

Fiber Optics ◽

Optical Sensors ◽

Visual Servoing ◽

Information Technologies ◽

Research Field ◽

Special Issue ◽

The Status ◽

Active Research ◽

Smart Technologies

Many researchers in optomechatronics face the globalization of technologies they developed and implemented on production lines such as optical lithography, fiber optics, optical sensors and communication, micro/nano-optical engineering, intelligent and smart technologies, machine vision, optics-based control, visual servoing, vision-based control, microrobotics, and optics-based navigation and sensing. Optomechatronics is an active research field in which many types of optical technologies are combined with mechatronics, including mechanisms, electronics, and information technologies. Optomechatronics thus develops new technical, smart, embedded functions and systems for very broad applications. We have organized several international conferences for optomechatronics and optomechatronic systems sponsored by SPIE during this decade. At Sapporo in 2005, the SPIE international symposium on optomechatronic systems, ISOT2005, was held as a joint symposium of five conferences: actuators and manipulation, sensors and instrumentation, micro/nano-devices and components, machine vision, and systems control. The organization attracted 174 papers from around the world, and provided a fruitful forum for discussions on the status and future issues in optomechatronics. This special issue was planned partly to include many of the qualified papers presented at the symposium and to promote other researchers in peripheral fields of optomechatronics to submit their research to encourage researchers interested in it to develop systems and technologies more skilled, smarter, and more robust in the real-world environment. We thank the authors for their invaluable contributions and the reviewers for their valuable time and effort.

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PAME: Plasmonic Assay Modeling Environment

10.7287/peerj.preprints.1085v1 ◽

2015 ◽

Author(s):

Adam S Hughes ◽

Mark E. Reeves ◽

Zhaowen Liu

Keyword(s):

Fiber Optics ◽

Optical Sensors ◽

Quantitative Information ◽

Great Promise ◽

Metallic Films ◽

Modeling Tools ◽

Silver Colloids ◽

Sensing Systems ◽

Protein Shell

Plasmonic assays are an important class of optical sensors that measure biomolecular interactions in real-time without the need for labeling agents, making them especially well-suited for clinical applications. Through the incorporation of nanoparticles and fiberoptics, these sensing systems have been successfully miniaturized and show great promise for in-situ probing and implantable devices, yet it remains challenging to derive meaningful, quantitative information from plasmonic responses. This is in part due to a lack of dedicated modeling tools, and therefore we introduce PAME, an open-source Python application for modeling plasmonic systems of bulk and nanoparticle-embedded metallic films. PAME combines aspects of thin-film solvers, nanomaterials and fiber-optics into an intuitive graphical interface. Some of PAME’s features include a simulation mode, a database of hundreds of materials, and an object-oriented framework for designing complex nanomaterials, such as a gold nanoparticles encased in a protein shell. An overview of PAME’s theory and design is presented, followed by example simulations of a fiberoptic refractometer, as well as protein binding to a multiplexed sensor composed of a mixed layer of gold and silver colloids. These results provide new insights into observed responses in reflectance biosensors.

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Optical microfibers and nanofibers

Nanophotonics ◽

10.1515/nanoph-2013-0033 ◽

2013 ◽

Vol 2 (5-6) ◽

pp. 407-428 ◽

Cited By ~ 73

Author(s):

Xiaoqin Wu ◽

Limin Tong

Keyword(s):

Nonlinear Optics ◽

Fiber Optics ◽

Optical Fibers ◽

Optical Sensors ◽

Near Field ◽

Field Enhancement ◽

Atom Optics ◽

Near Field Optics ◽

Wavelength Scale ◽

Sub Wavelength

AbstractAs a combination of fiber optics and nanotechnology, optical microfibers and nanofibers (MNFs) have been emerging as a novel platform for exploring fiber-optic technology on the micro/nanoscale. Typically, MNFs taper drawn from glass optical fibers or bulk glasses show excellent surface smoothness, high homogeneity in diameter and integrity, which bestows these tiny optical fibers with low waveguiding losses and outstanding mechanical properties. Benefitting from their wavelength- or sub-wavelength-scale transverse dimensions, waveguiding MNFs exhibit a number of interesting properties, including tight optical confinement, strong evanescent fields, evident surface field enhancement and large and abnormal waveguide dispersion, which makes them ideal nanowaveguides for coherently manipulating light, and connecting fiber optics with near-field optics, nonlinear optics, plasmonics, quantum optics and optomechanics on the wavelength- or sub-wavelength scale. Based on optical MNFs, a variety of technological applications, ranging from passive micro-couplers and resonators, to active devices such as lasers and optical sensors, have been reported in recent years. This review is intended to provide an up-to-date introduction to the fabrication, characterization and applications of optical MNFs, with emphasis on recent progress in our research group. Starting from a brief introduction of fabrication techniques for physical drawing glass MNFs in Section 2, we summarize MNF optics including waveguiding modes, evanescent coupling, and bending loss of MNFs in Section 3. In Section 4, starting from a “MNF tree” that summarizes the applications of MNFs into 5 categories (waveguide & near field optics, nonlinear optics, plasmonics, quantum & atom optics, optomechanics), we go to details of typical technological applications of MNFs, including optical couplers, interferometers, gratings, resonators, lasers and sensors. Finally in Section 5 we present a brief summary of optical MNFs regarding their current challenges and future opportunities.

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Fiber Optics for Propulsion Control Systems

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.3239822 ◽

1985 ◽

Vol 107 (4) ◽

pp. 851-855

Author(s):

R. J. Baumbick

Keyword(s):

Full Advantage ◽

Control Systems ◽

Fiber Optics ◽

Optical Fibers ◽

Optical Sensors ◽

Optical Waveguides ◽

Dielectric Waveguides ◽

Sensors And Actuators ◽

Propulsion Systems ◽

Propulsion Control

The term “fiber optics” means the use of dielectric waveguides to transfer information. In aircraft systems with digital controls, fiber optics has advantages over wire systems because of its inherent immunity to electromagnetic noise (EMI) and electromagnetic pulses (EMP). It also offers a weight benefit when metallic conductors are replaced by optical fibers. To take full advantage of the benefits of optical waveguides, passive optical sensors are also being developed to eliminate the need for electrical power to the sensor. Fiber optics may also be used for controlling actuators on engine and airframe. In this application, the optical fibers, connectors, etc., will be subjected to high temperatures and vibrations. This paper discusses the use of fiber optics in aircraft propulsion systems, together with the optical sensors and optically controlled actuators being developed to take full advantage of the benefits which fiber optics offers. The requirements for sensors and actuators in advanced propulsion systems are identified. The benefits of using fiber optics in place of conventional wire systems are discussed as well as the environmental conditions under which the optical components must operate. Work being done under contract to NASA Lewis on optical and optically activated actuators sensors for propulsion control systems is presented.

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PAME: Plasmonic Assay Modeling Environment

10.7287/peerj.preprints.1085 ◽

2015 ◽

Author(s):

Adam S Hughes ◽

Mark E. Reeves ◽

Zhaowen Liu

Keyword(s):

Fiber Optics ◽

Optical Sensors ◽

Quantitative Information ◽

Great Promise ◽

Metallic Films ◽

Modeling Tools ◽

Silver Colloids ◽

Sensing Systems ◽

Protein Shell

Plasmonic assays are an important class of optical sensors that measure biomolecular interactions in real-time without the need for labeling agents, making them especially well-suited for clinical applications. Through the incorporation of nanoparticles and fiberoptics, these sensing systems have been successfully miniaturized and show great promise for in-situ probing and implantable devices, yet it remains challenging to derive meaningful, quantitative information from plasmonic responses. This is in part due to a lack of dedicated modeling tools, and therefore we introduce PAME, an open-source Python application for modeling plasmonic systems of bulk and nanoparticle-embedded metallic films. PAME combines aspects of thin-film solvers, nanomaterials and fiber-optics into an intuitive graphical interface. Some of PAME’s features include a simulation mode, a database of hundreds of materials, and an object-oriented framework for designing complex nanomaterials, such as a gold nanoparticles encased in a protein shell. An overview of PAME’s theory and design is presented, followed by example simulations of a fiberoptic refractometer, as well as protein binding to a multiplexed sensor composed of a mixed layer of gold and silver colloids. These results provide new insights into observed responses in reflectance biosensors.

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Designing high-resolution slow scan CCD-based TEM camera systems

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010012936x ◽

1992 ◽

Vol 50 (2) ◽

pp. 946-947

Author(s):

James F. Mancuso ◽

William B. Maxwell ◽

Russell E. Camp ◽

Mark H. Ellisman

Keyword(s):

Fiber Optics ◽

Ccd Camera ◽

High Energy ◽

Phosphor Layer ◽

X Ray ◽

Light Production ◽

Camera Systems ◽

X Ray Imaging ◽

Electron Image ◽

Scintillating Fiber

The imaging requirements for 1000 line CCD camera systems include resolution, sensitivity, and field of view. In electronic camera systems these characteristics are determined primarily by the performance of the electro-optic interface. This component converts the electron image into a light image which is ultimately received by a camera sensor.Light production in the interface occurs when high energy electrons strike a phosphor or scintillator. Resolution is limited by electron scattering and absorption. For a constant resolution, more energy deposition occurs in denser phosphors (Figure 1). In this respect, high density x-ray phosphors such as Gd2O2S are better than ZnS based cathode ray tube phosphors. Scintillating fiber optics can be used instead of a discrete phosphor layer. The resolution of scintillating fiber optics that are used in x-ray imaging exceed 20 1p/mm and can be made very large. An example of a digital TEM image using a scintillating fiber optic plate is shown in Figure 2.

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Comparison of two devices for measuring exercise transcutaneous oxygen pressures in patients with claudication

VASA ◽

10.1024/0301-1526/a000454 ◽

2015 ◽

Vol 44 (5) ◽

pp. 355-362 ◽

Cited By ~ 8

Author(s):

Marie Urban ◽

Alban Fouasson-Chailloux ◽

Isabelle Signolet ◽

Christophe Colas Ribas ◽

Mathieu Feuilloy ◽

...

Keyword(s):

Oxygen Pressure ◽

Optical Sensors ◽

Chemical Sensors ◽

Transcutaneous Oxygen ◽

Starting Values ◽

Two Systems ◽

Transcutaneous Oxygen Pressure ◽

New Sensors ◽

Changes Over Time ◽

Over Time

Abstract. Summary: Background: We aimed at estimating the agreement between the Medicap® (photo-optical) and Radiometer® (electro-chemical) sensors during exercise transcutaneous oxygen pressure (tcpO2) tests. Our hypothesis was that although absolute starting values (tcpO2rest: mean over 2 minutes) might be different, tcpO2-changes over time and the minimal value of the decrease from rest of oxygen pressure (DROPmin) results at exercise shall be concordant between the two systems. Patients and methods: Forty seven patients with arterial claudication (65 + / - 7 years) performed a treadmill test with 5 probes each of the electro-chemical and photo-optical devices simultaneously, one of each system on the chest, on each buttock and on each calf. Results: Seventeen Medicap® probes disconnected during the tests. tcpO2rest and DROPmin values were higher with Medicap® than with Radiometer®, by 13.7 + / - 17.1 mm Hg and 3.4 + / - 11.7 mm Hg, respectively. Despite the differences in absolute starting values, changes over time were similar between the two systems. The concordance between the two systems was approximately 70 % for classification of test results from DROPmin. Conclusions: Photo-optical sensors are promising alternatives to electro-chemical sensors for exercise oximetry, provided that miniaturisation and weight reduction of the new sensors are possible.

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