Dr. Richard H. Selfridge Profile

Dr. Richard H. Selfridge

Professor at Brigham Young Univ

SPIE Involvement:

Author

Publications (43)

Proceedings Article | 13 May 2015 Paper

High electric field measurement with slab coupled optical sensors using nonlinear calibration

Nikola Stan, Legrand Shumway, Frederick Seng, Rex King, Richard Selfridge, Stephen Schultz

Proceedings Volume 9480, 94800T (2015) https://doi.org/10.1117/12.2177469

KEYWORDS: Calibration, Solids, Nonlinear optics, Resistors, Optical sensors, Sensor calibration, Photodiodes, Oscilloscopes, Fiber optics sensors, Waveguides

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Proceedings Article | 2 June 2014 Paper

Fiber Bragg grating spectral features for structural health monitoring of composite structures

Sean Webb, Kara Peters, Mohammed Zikry, Nikola Stan, Spencer Chadderdon, Richard Selfridge, Stephen Schultz

Proceedings Volume 9157, 9157A3 (2014) https://doi.org/10.1117/12.2059625

KEYWORDS: Fiber Bragg gratings, Sensors, Distortion, Composites, Structural health monitoring, Adhesives, Environmental sensing, Optical sensors, Ferroelectric materials, Aerospace engineering

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Proceedings Article | 10 April 2014 Paper

Non-intrusive electric field sensing

S. Schultz, R. Selfridge, S. Chadderdon, D. Perry, N. Stan

Proceedings Volume 9062, 90620H (2014) https://doi.org/10.1117/12.2045751

KEYWORDS: Ions, Waveguides, Optical fibers, Crystals, Sensors, Electro optics, Dielectrics, Fiber optics sensors, Nonlinear crystals, Electric field sensors

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Proceedings Article | 10 April 2014 Paper

Localized measurements of composite dynamic response for health monitoring

Sean Webb, Kyle Oman, Kara Peters, Nikola Stan, Spencer Chadderdon, Richard Selfridge, Stephen Schultz

Proceedings Volume 9062, 906206 (2014) https://doi.org/10.1117/12.2045255

KEYWORDS: Fiber Bragg gratings, Sensors, Distortion, Composites, Thermography, Adhesives, Structural health monitoring, Environmental sensing, Microelectromechanical systems, Multiplexing

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Proceedings Article | 8 March 2014 Paper

Non-intrusive high voltage measurement using slab coupled optical sensors

Nikola Stan, Spencer Chadderdon, Richard Selfridge, Stephen Schultz

Proceedings Volume 9062, 90620J (2014) https://doi.org/10.1117/12.2046049

KEYWORDS: Sensors, Electrodes, Calibration, Dielectrics, Transformers, Optical fibers, Resistance, Optical spheres, Optical sensors, Dielectric breakdown

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Proceedings Article | 8 March 2014 Paper

Ion trap electric field measurements using slab coupled optical sensors

L. Shumway, S. Chadderdon, A. Powell, A. Li, D. Austin, A. Hawkins, R. Selfridge, S. Schultz

Proceedings Volume 9062, 90620I (2014) https://doi.org/10.1117/12.2046004

KEYWORDS: Ions, Sensors, Waveguides, Electric field sensors, Crystals, Electrodes, Optical sensors, Ferroelectric materials, Mass spectrometry, Particles

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Proceedings Article | 29 May 2013 Paper

Nondestructive inspection of CFRP adhesively bonded joints using embedded FBG sensors

S. Webb, P. Shin, K. Peters, R. Selfridge, S. Schultz

Proceedings Volume 8722, 872207 (2013) https://doi.org/10.1117/12.2018443

KEYWORDS: Fiber Bragg gratings, Sensors, Adhesives, Composites, Inspection, Thermography, Computer simulations, Nondestructive evaluation, Optical amplifiers, Phase contrast

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Proceedings Article | 11 April 2013 Paper

Dynamic shape sensing using a fiber Bragg grating mesh

Douglas Bailey, Nikola Stan, Spencer Chadderdon, Daniel Perry, Stephen Schultz, Richard Selfridge

Proceedings Volume 8693, 869303 (2013) https://doi.org/10.1117/12.2010027

KEYWORDS: Fiber Bragg gratings, Reflectivity, Detection and tracking algorithms, Sensors, Optical filters, Fiber optics sensors, Solids, Optical amplifiers, Tunable lasers, Statistical analysis

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Proceedings Article | 11 April 2013 Paper

Characterization of fatigue damage in adhesively bonded lap joints through dynamic, full-spectral interrogation of fiber Bragg grating sensors

S. Webb, P. Shin, K. Peters, M. Zikry, S. Chadderdon, N. Stan, R. Selfridge, S. Schultz

Proceedings Volume 8693, 86930H (2013) https://doi.org/10.1117/12.2010018

KEYWORDS: Sensors, Fiber Bragg gratings, Adhesives, Composites, Ferroelectric materials, Thermography, Actuators, Inspection, Phase contrast, Fourier transforms

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Proceedings Article | 11 April 2013 Paper

High dynamic range high sensitivity FBG interrogation

Nikola Stan, Douglas Bailey, Spencer Chadderdon, Richard Selfridge, Stephen Schultz, Sean Webb, Kara Peters, Mohammed Zikry

Proceedings Volume 8694, 86940N (2013) https://doi.org/10.1117/12.2009875

KEYWORDS: Fiber Bragg gratings, Optical filters, Sensors, Feedback control, Electronic filtering, High dynamic range imaging, Feedback signals, Microcontrollers, Ultrasonics, Actuators

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Proceedings Article | 11 April 2013 Paper

Improvements in electric field sensor sensitivity by exploiting a tangential field configuration

Spencer Chadderdon, Leeland Woodard, Daniel Perry, Richard Selfridge, Stephen Schultz

Proceedings Volume 8693, 86930V (2013) https://doi.org/10.1117/12.2009867

KEYWORDS: Waveguides, Ferroelectric materials, Crystals, Sensors, Electric field sensors, Optical fibers, Geometrical optics, Electro optics, Electrodes, Refractive index

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Proceedings Article | 19 May 2012 Paper

Multi-axis, all-dielectric electric field sensors

Spencer Chadderdon, Daniel Perry, Jacob Van Wagoner, Richard Selfridge, Stephen Schultz

Proceedings Volume 8376, 837608 (2012) https://doi.org/10.1117/12.921499

KEYWORDS: Ferroelectric materials, Waveguides, Optical fibers, Sensors, Electric field sensors, Refractive index, Polymers, Crystals, Electro optics, Tunable lasers

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Proceedings Article | 5 April 2012 Paper

High-speed full-spectrum interrogation of fiber Bragg grating sensor application in reducing sensor strain sensitivity

Nikola Stan, Spencer Chadderdon, Richard Selfridge, Stephen Schultz, Sean Webb, Kara Peters, Mohammed Zikry

Proceedings Volume 8347, 83471N (2012) https://doi.org/10.1117/12.914751

KEYWORDS: Sensors, Fiber Bragg gratings, Edge detection, Composites, Epoxies, Packaging, Interference (communication), Environmental sensing, Electronic filtering, Signal detection

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Proceedings Article | 30 March 2012 Paper

Full spectral interrogation of fiber Bragg grating sensors for measurements of damage during steady-state vibration

S. Webb, K. Peters, M. Zikry, S. Chadderdon, R. Selfridge, S. Schultz

Proceedings Volume 8346, 83460C (2012) https://doi.org/10.1117/12.915150

KEYWORDS: Fiber Bragg gratings, Sensors, Aluminum, Ferroelectric materials, Optical amplifiers, Actuators, Reflectivity, Reflection, Composites, Optical filters

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Proceedings Article | 18 May 2011 Paper

High-speed full-spectrum fiber Bragg gratings interrogator system and testing

S. Chadderdon, R. Selfridge, S. Schultz, S. Webb, C. Park, K. Peters, M. Zikry

Proceedings Volume 7753, 77537Q (2011) https://doi.org/10.1117/12.885138

KEYWORDS: Fiber Bragg gratings, Optical filters, Sensors, Magnetic weapons, Microelectromechanical systems, Composites, Electromagnetism, Fiber Bragg grating interrogators, Tunable filters, Carbon

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Proceedings Article | 17 May 2011 Paper

Magnetic field sensing using D-fiber coupled Bi:RIG slab

Bryson Shreeve, Richard Selfridge, Stephen Schultz, Celestino Gaeta, Richard Forber

Proceedings Volume 7753, 77534S (2011) https://doi.org/10.1117/12.885136

KEYWORDS: Magnetism, Magnetic sensors, Waveguides, Magneto-optics, Optical fibers, Sensors, Molybdenum, Refractive index, Modulation, Signal detection

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Proceedings Article | 20 April 2011 Paper

Interrogation systems for slab coupled optical fiber sensors

Jon Noren, Richard Selfridge, Stephen Schultz

Proceedings Volume 7982, 79820R (2011) https://doi.org/10.1117/12.880912

KEYWORDS: Interference (communication), Signal to noise ratio, Signal detection, Photodiodes, Sensors, Oscilloscopes, Resistors, Spectrum analysis, Polarization, Fiber optics sensors

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Proceedings Article | 15 April 2011 Paper

Full-spectral interrogation of fiber Bragg grating sensors for damage identification

S. Webb, A. Noevere, K. Peters, M. Zikry, T. Vella, S. Chadderdon, R. Selfridge, S. Schultz

Proceedings Volume 7982, 79820C (2011) https://doi.org/10.1117/12.881093

KEYWORDS: Fiber Bragg gratings, Sensors, Aluminum, Distortion, Reflection, Ferroelectric materials, Reflectivity, Modulation, Actuators, Composites

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Proceedings Article | 15 April 2011 Paper

Multi-use D-fiber sensors

Richard Selfridge, Stephen Schultz, Joshua Kvavle, Tyson Lowder, Richard Gibson

Proceedings Volume 7982, 79820P (2011) https://doi.org/10.1117/12.882002

KEYWORDS: Sensors, Optical fibers, Etching, Electric field sensors, Fiber optics sensors, Cladding, Refraction, Waveguides, Photoresist materials, Chemical fiber sensors

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Proceedings Article | 15 April 2011 Paper

Electro-optic polymer electric field sensor

D. Perry, S. Chadderdon, Richard Gibson, B. Shreeve, Richard Selfridge, Stephen Schultz, Wen Wang, Richard Forber, J. Luo

Proceedings Volume 7982, 79820Q (2011) https://doi.org/10.1117/12.880823

KEYWORDS: Polymers, Electro optic polymers, Polymer thin films, Waveguides, Sensors, Electro optics, Optical fibers, Glasses, Dielectrics, Polymer multimode waveguides

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Proceedings Article | 7 April 2010 Paper

High-speed full-spectrum interrogation of fiber Bragg gratings for composite impact sensing

S. Chadderdon, T. Vella, R. Selfridge, S. Schultz, S. Webb, C. Park, K. Peters, M. Zikry

Proceedings Volume 7648, 764803 (2010) https://doi.org/10.1117/12.847662

KEYWORDS: Fiber Bragg gratings, Microelectromechanical systems, Composites, Sensors, Optical filters, Tunable filters, Spectral resolution, Data acquisition, Optical amplifiers, Signal detection

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Proceedings Article | 25 March 2010 Paper

Multi-axial fiber-optic electric field sensor

D. Perry, R. Gibson, B. Schreeve, S. Schultz, D. Selfridge

Proceedings Volume 7648, 76480D (2010) https://doi.org/10.1117/12.847653

KEYWORDS: Sensors, Electric field sensors, Waveguides, Electromagnetism, Packaging, Electro optics, Electronics, Optical fibers, Crystals, Epoxies

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Proceedings Article | 25 March 2010 Paper

Impact induced damage assessment in composite laminates through embedded fiber Bragg gratings

S. Webb, K. Peters, M. Zikry, T. Vella, S. Chadderdon, R. Selfridge, S. Schultz

Proceedings Volume 7648, 764804 (2010) https://doi.org/10.1117/12.847543

KEYWORDS: Sensors, Fiber Bragg gratings, Composites, Optical fibers, Data acquisition, Optical filters, Fiber optics sensors, Reflection, Optical amplifiers, Calibration

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Proceedings Article | 5 October 2009 Paper

Dynamic, full-spectral interrogation of fiber Bragg grating sensors for impact testing of composite laminates

A. Propst, K. Peters, M. Zikry, W. Kunzler, Z. Zhu, M. Wirthlin, R. Selfridge, S. Schultz

Proceedings Volume 7503, 75030G (2009) https://doi.org/10.1117/12.835406

KEYWORDS: Sensors, Fiber Bragg gratings, Composites, Field programmable gate arrays, Optical filters, Carbon, Telecommunications, Optical fibers, Optical fabrication, Fiber optics sensors

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Proceedings Article | 7 April 2009 Paper

Electric field sensor array from cavity resonance between optical D-fiber and multiple slab waveguides

Richard Gibson, Richard Selfridge, Stephen Schultz

Proceedings Volume 7293, 729318 (2009) https://doi.org/10.1117/12.816399

KEYWORDS: Waveguides, Sensors, Electric field sensors, Crystals, Optical fibers, Ferroelectric materials, Cladding, Electro optics, Receivers, Polishing

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Proceedings Article | 7 April 2009 Paper

High repetition-rate full-spectrum interrogation of FGB sensors for dynamic measurements in composite laminates

W. Kunzler, Z. Zhu, M. Wirthlin, R. Selfridge, S. Schultz, A. Propst, K. Peters, M. Zikry

Proceedings Volume 7293, 729304 (2009) https://doi.org/10.1117/12.816384

KEYWORDS: Fiber Bragg gratings, Sensors, Composites, Analog electronics, Optical filters, Field programmable gate arrays, Digital electronics, Data storage, Data conversion, Data communications

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Proceedings Article | 7 April 2008 Paper

Packaging of surface relief fiber Bragg gratings for harsh high temperature environments

Jonathan Young, Tyson Lowder, Richard Selfridge, Stephen Schultz

Proceedings Volume 6933, 693308 (2008) https://doi.org/10.1117/12.776378

KEYWORDS: Sensors, Fiber Bragg gratings, Packaging, Optical fibers, Temperature metrology, Ceramics, Fiber optics, Multiplexing, Etching, Temperature sensors

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Proceedings Article | 7 April 2008 Paper

Advanced FBG sensing through rapid spectral interrogation

Wesley Kunzler, Jason Newman, Daniel Wilding, Zixu Zhu, Tyson Lowder, Richard Selfridge, Stephen Schultz, Michael Wirthlin

Proceedings Volume 6933, 69330D (2008) https://doi.org/10.1117/12.776459

KEYWORDS: Sensors, Fiber Bragg gratings, Optical filters, Field programmable gate arrays, Analog electronics, Data communications, Optical fibers, Temperature metrology, Digital filtering, Fiber lasers

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Proceedings Article | 27 April 2007 Paper

Electric field sensor based on core-replaced optical D-fiber

Eric Johnson, Josh Kvavle, Richard Selfridge, Stephen Schultz, Richard Forber, Wen Wang, De Yu Zang

Proceedings Volume 6525, 65251X (2007) https://doi.org/10.1117/12.715384

KEYWORDS: Sensors, Polymers, Electric field sensors, Waveguides, Optical fibers, Electrodes, Glasses, Polarization, Electronic circuits, Polymer multimode waveguides

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Proceedings Article | 10 April 2007 Paper

Miniature UAV telemetry using a portable integrated FOS system

Wesley Kunzler, Jason Newman, Daniel Wilding, Richard Selfridge, Stephen Schultz, Michael Wirthlin, Andres Rodriguez

Proceedings Volume 6530, 653005 (2007) https://doi.org/10.1117/12.715787

KEYWORDS: Sensors, Micro unmanned aerial vehicles, Fiber optics sensors, Smart sensors, Fiber Bragg gratings, Data communications, Optical filters, Control systems, Microelectromechanical systems, Unmanned aerial vehicles

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Proceedings Article | 5 April 2007 Paper

D-Fiber volatile organic compound sensor

John Gordon, Richard Selfridge, Stephen Schultz

Proceedings Volume 6528, 652810 (2007) https://doi.org/10.1117/12.715298

KEYWORDS: Sensors, Liquids, Fiber optics sensors, Polarization, Chemical fiber sensors, Fiber optics, Cladding, Etching, Phase shifts, Polymers

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Proceedings Article | 26 May 2006 Paper

Dielectric ultra wideband optical E-field sensors

Wen Wang, Haim Lotem, De Yu Zang, Richard Forber, Stephen Schultz, Richard Selfridge

Proceedings Volume 6219, 62190F (2006) https://doi.org/10.1117/12.665995

KEYWORDS: Sensors, Polymers, Waveguides, Electric field sensors, Antennas, Optical fibers, High power microwaves, Modulation, Polarization, Signal detection

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Proceedings Article | 30 March 2006 Paper

Unique characteristics of surface relief fiber Bragg gratings and their application to multi axis sensing

Tyson Lowder, Rich Gibson, Kevin Smith, Richard Selfridge, Stephen Schultz

Proceedings Volume 6167, 616709 (2006) https://doi.org/10.1117/12.656738

KEYWORDS: Polarization, Fiber Bragg gratings, Reflectivity, Polarizers, Temperature metrology, Birefringence, Reflection, Sensors, Optical fibers, Cladding

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Proceedings Article | 30 March 2006 Paper

Packaging of surface relief fiber Bragg gratings for use as strain sensors at high temperature

Richard Selfridge, Stephen Schultz, Tyson Lowder, Vincent Wnuk, Alexis Méndez, Steve Ferguson, Tom Graver

Proceedings Volume 6167, 616702 (2006) https://doi.org/10.1117/12.657661

KEYWORDS: Fiber Bragg gratings, Sensors, Packaging, Optical fibers, Photoresist materials, Cladding, Metals, Fiber optics sensors, Environmental sensing, Epoxies

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Proceedings Article | 30 March 2006 Paper

A fiber sensor integrated monitor for embedded instrumentation systems

Seth Lloyd, Jason Newman, Earl Parsons, Richard Selfridge, Stephen Schultz

Proceedings Volume 6167, 61670Q (2006) https://doi.org/10.1117/12.658851

KEYWORDS: Sensors, Fiber optics sensors, Fiber Bragg gratings, Microcontrollers, Smart sensors, Microelectromechanical systems, Embedded systems, Data communications, Tunable filters, Software development

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Proceedings Article | 16 May 2005 Paper

Etched in-fiber Bragg gratings for temperature sensing at high temperatures

Kevin Smith, Benjamin Ipson, Tyson Lowder, Aaron Hawkins, Richard Selfridge, Stephen Schultz

Proceedings Volume 5758, (2005) https://doi.org/10.1117/12.600215

KEYWORDS: Fiber Bragg gratings, Photoresist materials, Etching, Cladding, Sensors, Modulation, Reactive ion etching, Mirrors, Birefringence, Optical fibers

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Proceedings Article | 29 July 2004 Paper

Enhanced temperature sensing with in-fiber polymer waveguides

Benjamin Ipson, Kevin Smith, Richard Selfridge, Stephen Schultz

Proceedings Volume 5391, (2004) https://doi.org/10.1117/12.539279

KEYWORDS: Polymers, Waveguides, Polymer multimode waveguides, Temperature metrology, Birefringence, Polarizers, Etching, Modulators, Semiconducting wafers, Cladding

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Proceedings Article | 16 August 2001 Paper

Hybrid power systems for autonomous MEMS

Daniel Bennett, Richard Selfridge, Paul Humble, John Harb

Proceedings Volume 4334, (2001) https://doi.org/10.1117/12.436621

KEYWORDS: Solar cells, Microelectromechanical systems, Resistors, Diodes, Control systems, Solar energy, Power supplies, Temperature metrology, Device simulation, Sensors

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Proceedings Article | 3 October 1994 Paper

Gain modeling for in-fiber distributed feedback lasers using recursive Green's functions

Jim Freeze, Richard Selfridge

Proceedings Volume 2289, (1994) https://doi.org/10.1117/12.188699

KEYWORDS: Fiber lasers, Refraction, Modulation, Laser damage threshold, Erbium, Sodium, Composites, Systems modeling, Dye lasers, Waveguides

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Proceedings Article | 28 September 1994 Paper

Two-step input coupler

Steve Schultz, Logan Harris, Richard Selfridge

Proceedings Volume 2290, (1994) https://doi.org/10.1117/12.187405

KEYWORDS: Planar waveguides, Photoresist materials, Optical fibers, Diffraction gratings, Waveguides, Refraction, Fiber couplers, Composites, Directional couplers, Cladding

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SPIE Journal Paper | 1 December 1993

D-fiber holographic diffraction gratings

Jim Freeze, Richard Selfridge

OE, Vol. 32, Issue 12, (December 1993) https://doi.org/10.1117/12.10.1117/12.151282

KEYWORDS: Diffraction gratings, Photoresist materials, Cladding, Etching, Holography, Silica, Wet etching, Mirrors, Water, Structured optical fibers

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Proceedings Article | 13 January 1993 Paper

Distributed feedback D-fiber dye laser

Jim Freeze, Richard Selfridge

Proceedings Volume 1751, (1993) https://doi.org/10.1117/12.138897

KEYWORDS: Dye lasers, Fiber lasers, Cladding, Diffraction gratings, Fiber Bragg gratings, Mirrors, Micro optics, Etching, Waveguides, Modulation

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Proceedings Article | 1 November 1990 Paper

Controllable cladding removal for in-fiber integrated optics applications

Gregg Pugmire, Michael Jensen, Richard Selfridge

Proceedings Volume 1338, (1990) https://doi.org/10.1117/12.22971

KEYWORDS: Cladding, Etching, Waveguides, Birefringence, Polarization, Mathematical modeling, Planar waveguides, Wave propagation, Polishing, Optoelectronic devices

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This paper presents a novel technique to improve the design and implementation of in-fiber components by providing real time control of cladding removal by either polishing or etching. Cladding removal allows interaction between external materials and devices, and the light propagating in the fiber. Monitoring of the cladding removal process is achieved by observing the output from a section of fiber into which laser light has been focused. Resulting output graphs show that each specific fiber produces characteristic oscillations dependent on the number of modes propagating, the thickness of the cladding, the birefringence of the fiber, and the initial polarization state of the light. These oscillations result from changes in the effective indices of refraction of different modes as the cladding is removed. Electron micrographs of etched fiber surfaces show that unless proper cleaning and handling techniques are followed, the etched surface is scarred and pitted, leaving a poor quality substrate for device applications. However, if careful cleaning techniques and buffered hydrofluonc acid are used, the presence of these defects is drastically reduced and the resulting surface is smooth on a sub-micron scale. In order to understand better the characteristics of etched or polished fibers we have extended existing theoretical models which predict the effect of cladding removal on fiber birefnngence. Corroboration and use of these models allow more reliable monitoring and control of variables in the etching or polishing process such as cladding thickness, fiber alignment, acid concentration and temperature, and indices ofrefraction from fiber to fiber. Using the techniques presented in this paper, diffraction gratings are fabricated in etched D-type fibers. Other possible applications for this work include the production of variable wave plates, mode discriminators, polarizers, and the placement of detection and signal conditioning devices directly on the surface of a fiber.

Showing 5 of 43 publications

Conference Committee Involvement (6)

Smart Sensor Phenomena, Technology, Networks, and Systems Integration VII

10 March 2014 | San Diego, California, United States

Smart Sensor Phenomena, Technology, Networks, and Systems Integration VI

10 March 2013 | San Diego, California, United States

Smart Sensor Phenomena, Technology, Networks, and Systems Integration V

12 March 2012 | San Diego, California, United States

Smart Sensor Phenomena, Technology, Networks, and Systems IV

7 March 2011 | San Diego, California, United States

Smart Sensor Phenomena, Technology, Networks, and Systems III

8 March 2010 | San Diego, California, United States

Showing 5 of 6 Conference Committees

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