Dr. Harbans S. Dhadwal Profile

Dr. Harbans S. Dhadwal

Engineer at Integrated Fiber Optic Systems, Inc

SPIE Involvement:

Author

Publications (26)

Proceedings Article | 30 May 2022 Paper

A hybrid in-parallel TEG-TPV system for harvesting electrical energy from highly varying high-temperature sources

J. Rastegar, H. Dhadwal

Proceedings Volume 12090, 1209004 (2022) https://doi.org/10.1117/12.2618532

KEYWORDS: Thermoelectric materials, Energy harvesting, Photons, Optical fibers, Heat flux, Waveguides, Prototyping, Switching, Optical filters, Control systems

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Proceedings Article | 5 May 2017 Paper

Wireless energy and data transfer to munitions using high power laser diodes

Harbans Dhadwal, Jahangir Rastegar, Philip Kwok

Proceedings Volume 10195, 1019513 (2017) https://doi.org/10.1117/12.2262818

KEYWORDS: High power lasers, Diodes, Control systems, Capacitors, Photodiodes, Sensors, Fiber optics, Magnetism, Energy transfer, Modulation

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Proceedings Article | 5 May 2017 Paper

A class of polarized cavity orientation sensors

H. Dhadwal, J. Rastegar, P. Kwok, C. Pereira

Proceedings Volume 10195, 101950Z (2017) https://doi.org/10.1117/12.2262803

KEYWORDS: Sensors, Polarization, Environmental sensing, Antennas, Distance measurement, Unmanned vehicles, Magnetic sensors, Gyroscopes, Magnetometers, Radar, Modulation, Spatial resolution, Transmitters, Algorithm development

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SPIE Press Book | 21 February 2017

Energy Harvesting for Low-Power Autonomous Devices and Systems

Harbans Dhadwal, Jahangir Rastegar

KEYWORDS: Energy harvesting, Transducers, Electromagnetism, Capacitors, Sensors, Ceramics, Crystals, Magnetism, Microelectromechanical systems, Electronics

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Energy Harvesting for Low-Power Autonomous Devices and Systems

Proceedings Article | 19 May 2016 Paper

High contrast imaging through adaptive transmittance control in the focal plane

Harbans Dhadwal, Jahangir Rastegar, Dake Feng

Proceedings Volume 9868, 98680I (2016) https://doi.org/10.1117/12.2222572

KEYWORDS: Imaging systems, Transmittance, Light, Adaptive control, In vivo imaging, Biomedical optics, Spatial light modulators, Neodymium, Surgery, Image resolution

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Proceedings Article | 13 May 2016 Paper

High power free space optical link for rapid energy and data transmission

Harbans Dhadwal, Jahangir Rastegar, Dake Feng, Philip Kwok

Proceedings Volume 9837, 98370B (2016) https://doi.org/10.1117/12.2222909

KEYWORDS: Free space, Free space optics, Solar energy, Radio optics, Data transmission, Semiconductor lasers, Diodes, Fiber lasers, Neodymium, Thermography

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Proceedings Article | 13 May 2016 Paper

Non-GPS full position and angular orientation onboard sensors for moving and stationary platforms

Harbans Dhadwal, Jahangir Rastegar, Dake Feng, Philip Kwok, Carlos Pereira

Proceedings Volume 9837, 983702 (2016) https://doi.org/10.1117/12.2224075

KEYWORDS: Sensors, Polarization, Antennas, Environmental sensing, Radar, Modulation, Finite element methods, Signal to noise ratio, Data modeling, Wave propagation

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Proceedings Article | 22 May 2015 Paper

A novel method for full position and angular orientation measurement of moving objects

Harbans Dhadwal, Jahangir Rastegar, Dake Feng, Philip Kwok, Carlos Pereira

Proceedings Volume 9468, 946803 (2015) https://doi.org/10.1117/12.2177500

KEYWORDS: Sensors, Antennas, Modulation, Polarization, Global Positioning System, Distance measurement, Finite element methods, Radar, Environmental sensing, Signal to noise ratio

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Proceedings Article | 14 May 2015 Paper

High contrast imaging in the presence of a bright background

Harbans Dhadwal, Jahangir Rastegar, Dake Feng

Proceedings Volume 9489, 94890N (2015) https://doi.org/10.1117/12.2177506

KEYWORDS: Microelectromechanical systems, Imaging systems, Image enhancement, Image contrast enhancement, Digital imaging, Image filtering, Spatial light modulators, Spatial filters, Sensors, Image transmission

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Proceedings Article | 13 May 2015 Paper

Data communication through multiple physical media: applications to munitions

Harbans Dhadwal, Jahangir Rastegar, Dake Feng, Philip Kwok

Proceedings Volume 9491, 94910K (2015) https://doi.org/10.1117/12.2177521

KEYWORDS: Sensors, Telecommunications, Epoxies, Data communications, Actuators, Electronic components, Composites, Packaging, Wireless communications, Control systems

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Proceedings Article | 13 May 2015 Paper

Wireless photonic power and data transfer to dormant devices

Harbans Dhadwal, Jahangir Rastegar, Dake Feng, Philip Kwok

Proceedings Volume 9491, 949109 (2015) https://doi.org/10.1117/12.2177512

KEYWORDS: Copper, Finite element methods, Energy transfer, Thermal modeling, Sensors, Solar cells, Gallium arsenide, Epoxies, Convection, Fiber optics

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Proceedings Article | 5 June 2014 Paper

Pulse wireless photonic power transfer at high irradiance

Harbans Dhadwal, Jahangir Rastegar, Philip Kwok

Proceedings Volume 9115, 91150Y (2014) https://doi.org/10.1117/12.2053399

KEYWORDS: Capacitors, Resistance, Energy transfer, Sun, Solar cells, High power lasers, Diodes, Sensors, Solar energy, Semiconductor lasers

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Proceedings Article | 3 June 2014 Paper

A 10 GHz polarization scanning reference source

Harbans Dhadwal, Jahangir Rastegar

Proceedings Volume 9084, 908417 (2014) https://doi.org/10.1117/12.2053424

KEYWORDS: Polarization, Receivers, Amplifiers, Phase shifts, Sensors, Control systems, Unmanned aerial vehicles, Antennas, Transmitters, Phase measurement

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Proceedings Article | 3 June 2014 Paper

Roll angle measurement using a polarization scanning reference source

Harbans Dhadwal, Jahangir Rastegar, Varun Kankipati

Proceedings Volume 9084, 908411 (2014) https://doi.org/10.1117/12.2051065

KEYWORDS: Polarization, Receivers, Transmitters, Unmanned aerial vehicles, Switches, Amplifiers, Sensors, Signal detection, Digital signal processing, Signal attenuation

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Proceedings Article | 7 May 1997 Paper

DNA sequencing by multiple capillaries that form a waveguide

Harbans Dhadwal, Mark Quesada, F. William Studier

Proceedings Volume 2980, (1997) https://doi.org/10.1117/12.273541

KEYWORDS: Capillaries, Waveguides, Refractive index, Fiber optics, Optical fibers, Luminescence, Ray tracing, Paraxial approximations, Refraction, Signal detection

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Proceedings Article | 22 May 1995 Paper

Fiber optic system for in-vivo sizing of proteins in animal eye lenses

Harbans Dhadwal, Rafat Ansari, Michael DellaVecchia, Stephen Dubin

Proceedings Volume 2393, (1995) https://doi.org/10.1117/12.209855

KEYWORDS: Eye, Light scattering, Fiber optics, Proteins, Scattering, In vivo imaging, Lenses, Laser scattering, Diffusion, Particles

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Proceedings Article | 3 April 1995 Paper

Integrated fiber optic backscatter system for photon correlation spectroscopy

Harbans Dhadwal, Romel Khan, Kwang Suh

Proceedings Volume 2386, (1995) https://doi.org/10.1117/12.206029

KEYWORDS: Scattering, Light scattering, Fiber optics, Laser scattering, Particles, Backscatter, Fusion splicing, Photomultipliers, Dynamic light scattering, Optical fibers

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Proceedings Article | 30 September 1994 Paper

Integrated fiber optic system for dynamic light scattering measurements in microgravity

Rafat Ansari, Harbans Dhadwal, Kwang Suh

Proceedings Volume 2210, (1994) https://doi.org/10.1117/12.188082

KEYWORDS: Particles, Fiber optics, Polymers, Backscatter, Laser scattering, Fiber optics tests, Scattering, Dynamic light scattering, Light scattering, Optical testing

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Proceedings Article | 8 July 1994 Paper

Regularized inversion of dynamic light scattering intensity data

Douglas Ross, Harbans Dhadwal, Kwang Suh

Proceedings Volume 2241, (1994) https://doi.org/10.1117/12.179736

KEYWORDS: Particles, Statistical analysis, Distortion, Inverse optics, Light scattering, Dynamic light scattering, Deconvolution, Photodetectors, Motion measurement, Optical fibers

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SPIE Journal Paper | 1 November 1993

Optical implementation of a regularized Gerchberg iterative algorithm for super-resolution

Eric Noel, Romel Khan, Harbans Dhadwal

OE, Vol. 32, Issue 11, (November 1993) https://doi.org/10.1117/12.10.1117/12.148125

KEYWORDS: Mirrors, Image processing, Fourier transforms, Imaging systems, Charge-coupled devices, Optical filters, Super resolution, Lenses, Beam splitters, Data acquisition

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Proceedings Article | 21 July 1993 Paper

Dynamic light-scattering studies of BSA and lysozyme using a backscatter fiber optic system

Harbans Dhadwal, William Wilson, Rafat Ansari, William Meyer

Proceedings Volume 1884, (1993) https://doi.org/10.1117/12.148349

KEYWORDS: Backscatter, Light scattering, Fiber optics, Scattering, Proteins, Laser scattering, Optical fibers, Fiber optics tests, Optical testing, Scatter measurement

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SPIE Journal Paper | 1 February 1993

Coherent fiber optic sensor for early detection of cataractogenesis in a human eye lens

Harbans Dhadwal, Rafat Ansari, Michael DellaVecchia

OE, Vol. 32, Issue 02, (February 1993) https://doi.org/10.1117/12.10.1117/12.60741

KEYWORDS: Eye, Proteins, Light scattering, Fiber optics, Scattering, Backscatter, Diffusion, Fiber optics sensors, Molecules, Laser scattering

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Proceedings Article | 16 April 1992 Paper

Fiber optic sensor for ophthalmic refractive diagnostics

Rafat Ansari, Harbans Dhadwal, Melanie Campbell, Michael DellaVecchia

Proceedings Volume 1648, (1992) https://doi.org/10.1117/12.58290

KEYWORDS: Eye, Lenses, Crystals, Fiber optics, Particles, Light scattering, Fiber optics sensors, Sensors, Scattering, Diagnostics

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Proceedings Article | 1 March 1992 Open Access

Challenges of introducing optoelectronics into an entrenched electrical engineering curriculum

Harbans Dhadwal

Proceedings Volume 1603, (1992) https://doi.org/10.1117/12.57873

KEYWORDS: Optoelectronics, Electrical engineering, Sensors, Fiber optic communications, Fiber optics, Optical design, Optoelectronic devices, Optical imaging, Photons, Light

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Proceedings Article | 1 December 1991 Paper

Multiple fiber optic probe for several sensing applications

Harbans Dhadwal

Proceedings Volume 1584, (1991) https://doi.org/10.1117/12.2321925

KEYWORDS: Light scattering, Scattering, Fiber optics, Optical fibers, Particles, Sensors, Laser scattering, Microlens, GRIN lenses, Particle sizing

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Proceedings Article | 1 November 1991 Paper

Real-time optical processor for increasing resolution beyond the diffraction limit

Harbans Dhadwal, Eric Noel

Proceedings Volume 1564, (1991) https://doi.org/10.1117/12.49750

KEYWORDS: Diffraction, Mirrors, Image processing, Fourier transforms, Charge-coupled devices, Adaptive control, Optical signal processing, Imaging systems, Optical filters, Convolution

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Showing 5 of 26 publications

Conference Committee Involvement (2)

Dimensional Optical Metrology and Inspection for Practical Applications VI

13 April 2017 | Anaheim, CA, United States

Dimensional Optical Metrology and Inspection for Practical Applications V

20 April 2016 | Baltimore, MD, United States

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