Dr. Robert L. Nelson Profile

Dr. Robert L. Nelson

SPIE Involvement:

Author | Editor

Publications (26)

Proceedings Article | 2 May 2016 Paper

Towards a fully packaged high-performance RF sensor featuring slotted photonic crystal waveguides

Chi-Jui Chung, Harish Subbaraman, Xingyu Zhang, Hai Yan, Jingdong Luo, Alex K.-Y. Jen, Robert Nelson, Charles Y.-C. Lee, Ray Chen

Proceedings Volume 9747, 97471V (2016) https://doi.org/10.1117/12.2213557

KEYWORDS: Sensors, Photonic crystals, Waveguides, Antennas, Polymers, Electro optics, Slow light, Electro optic polymers, Microwave remote sensing, Silicon photonics, Silicon, Silica, Electromagnetism, Modulation

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Proceedings Article | 3 April 2015 Paper

Broadband energy-efficient optical modulation by hybrid integration of silicon nanophotonics and organic electro-optic polymer

Xingyu Zhang, Amir Hosseini, Harish Subbaraman, Jingdong Luo, Alex K.- Jen, Chi-jui Chung, Hai Yan, Zeyu Pan, Robert Nelson, Ray Chen

Proceedings Volume 9368, 93680K (2015) https://doi.org/10.1117/12.2079686

KEYWORDS: Modulation, Silicon, Modulators, Polymers, Waveguides, Electrodes, Optical modulators, Photonic crystals, Electro optic polymers, Integrated optics

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Proceedings Article | 14 March 2015 Paper

Antenna-coupled silicon-organic hybrid integrated photonic crystal modulator for broadband electromagnetic wave detection

Xingyu Zhang, Amir Hosseini, Harish Subbaraman, Shiyi Wang, Qiwen Zhan, Jingdong Luo, Alex Jen, Chi-jui Chung, Hai Yan, Zeyu Pan, Robert Nelson, Charles Lee, Ray Chen

Proceedings Volume 9362, 93620O (2015) https://doi.org/10.1117/12.2076534

KEYWORDS: Antennas, Silicon, Modulation, Polymers, Modulators, Waveguides, Sensors, Electromagnetism, Electric field sensors, Plasmonics

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The detection and measurement of electromagnetic fields have attracted significant amounts of attention in recent years. Traditional electronic electromagnetic field sensors use large active conductive probes which perturb the field to be measured and also make the devices bulky. In order to address these problems, integrated photonic electromagnetic field sensors have been developed, in which an optical signal is modulated by an RF signal collected by a miniaturized antenna. In this work, we design, fabricate and characterize a compact, broadband and highly sensitive integrated photonic electromagnetic field sensor based on a silicon-organic hybrid modulator driven by a bowtie antenna. The large electro-optic (EO) coefficient of organic polymer, the slow-light effects in the silicon slot photonic crystal waveguide (PCW), and the broadband field enhancement provided by the bowtie antenna, are all combined to enhance the interaction of microwaves and optical waves, enabling a high EO modulation efficiency and thus a high sensitivity. The modulator is experimentally demonstrated with a record-high effective in-device EO modulation efficiency of r₃₃=1230pm/V. Modulation response up to 40GHz is measured, with a 3-dB bandwidth of 11GHz. The slot PCW has an interaction length of 300μm, and the bowtie antenna has an area smaller than 1cm². The bowtie antenna in the device is experimentally demonstrated to have a broadband characteristics with a central resonance frequency of 10GHz, as well as a large beam width which enables the detection of electromagnetic waves from a large range of incident angles. The sensor is experimentally demonstrated with a minimum detectable electromagnetic power density of 8.4mW/m² at 8.4GHz, corresponding to a minimum detectable electric field of 2.5V/m and an ultra-high sensitivity of 0.000027V/m Hz^-1/2 ever demonstrated. To the best of our knowledge, this is the first silicon-organic hybrid device and also the first PCW device used for the photonic detection of electromagnetic waves. Finally, we propose some future work, including a Teraherz wave sensor based on antenna-coupled electrooptic polymer filled plasmonic slot waveguide, as well as a fully packaged and tailgated device.

Proceedings Article | 9 October 2012 Paper

Plasmonic antennas as building blocks for spin optics and quantum optics applications

Guanghao Rui, Weibin Chen, Don Abeysinghe, Christopher Tabor, Robert Nelson, Qiwen Zhan

Proceedings Volume 8461, 84611C (2012) https://doi.org/10.1117/12.931127

KEYWORDS: Antennas, Plasmonics, Polarization, Photons, Near field optics, Quantum optics, Dielectric polarization, Optical antennas, Free space optics, Polarimetry

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Proceedings Article | 21 February 2012 Paper

Fabry-Perot resonant switch using electro-optic polymer

Katherine Drain, Wen Cheng, Robert Nelson, Qiwen Zhan

Proceedings Volume 8258, 82580R (2012) https://doi.org/10.1117/12.905650

KEYWORDS: Polymers, Switches, Modulation, Electro optics, Resonators, Reflectors, Electro optic polymers, Reflectivity, Mirrors, Glasses

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Proceedings Article | 21 February 2011 Paper

Design and construction of an electro-optic RF metamaterial array

Weibin Chen, Robert Nelson, Qiwen Zhan

Proceedings Volume 7936, 79360E (2011) https://doi.org/10.1117/12.878973

KEYWORDS: Resonators, Split ring resonators, Electromagnetism, Metamaterials, 3D modeling, Electro optics, Electro optical modeling, Solar concentrators, Modulation, Finite element methods

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Proceedings Article | 5 December 2006 Paper

Organic light emitting diode with a DNA biopolymer electron blocking layer

Joshua Hagen, James Grote, Wayne Li, Andrew Steckl, Darnell Diggs, John Zetts, Robert Nelson, F. Kenneth Hopkins

Proceedings Volume 6333, 63330J (2006) https://doi.org/10.1117/12.682251

KEYWORDS: Electron beam lithography, Organic light emitting diodes, Polymethylmethacrylate, Biopolymers, Luminous efficiency, Biological research, Polymers, Analytical research, Molecules, Photography

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Proceedings Article | 29 September 2006 Paper

Embedded electrode electro-optic composite materials

Robert Nelson, James Grote, Joseph Haus, Brad Birchfield

Proceedings Volume 6320, 63200R (2006) https://doi.org/10.1117/12.682488

KEYWORDS: Electrodes, Electro optics, Composites, Polymers, Refractive index, Modulation, Modulators, Electro optical design, Chromophores, Homogenization

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Proceedings Article | 23 February 2006 Paper

DNA: new class of polymer

James Grote, Emily Heckman, Joshua Hagen, Perry Yaney, Darnell Diggs, Guru Subramanyam, Robert Nelson, John Zetts, De-Yu Zang, Birendra Singh, Niyazi Serdar Sariciftci, F. Kenneth Hopkins

Proceedings Volume 6117, 61170J (2006) https://doi.org/10.1117/12.660421

KEYWORDS: Biopolymers, Polymers, Dielectrics, Cladding, Modulators, Nonlinear optics, Electro optic polymers, Field effect transistors, Electrodes, Gold

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Proceedings Article | 28 October 2005 Paper

Deoxyribonucleic acid (DNA) based photonic materials: current status

James Grote, Emily Heckman, Joshua Hagen, Perry Yaney, Darnell Diggs, Guru Subramanyam, Robert Nelson, John Zetts, De Yu Zang, F. Hopkins

Proceedings Volume 5990, 59900D (2005) https://doi.org/10.1117/12.632476

KEYWORDS: Biopolymers, Polymers, Cladding, Nonlinear optics, Waveguides, Polymethylmethacrylate, Refractive index, Electrodes, Dielectrics, Microwave radiation

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Proceedings Article | 4 April 2005 Paper

Effects of the electric field poling procedure on electro-optic coefficient for guest-host nonlinear optic polymers

Joshua Hagen, James Grote, John Zetts, Darnell Diggs, Robert Nelson, Frank Hopkins, Perry Yaney, Alex Jen, Larry Dalton

Proceedings Volume 5724, (2005) https://doi.org/10.1117/12.593643

KEYWORDS: Polymers, Electro optics, Chromophores, Nonlinear optics, Electrodes, Polymethylmethacrylate, Molecules, Glasses, Temperature metrology, Gold

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Proceedings Article | 16 December 2004 Paper

Deoxyribonucleic acid (DNA)-based optical materials

James Grote, Emily Heckman, Joshua Hagen, Perry Yaney, Guru Subramanyam, Stephen Clarson, Darnell Diggs, Robert Nelson, John Zetts, F. Kenneth Hopkins, Naoya Ogata

Proceedings Volume 5621, (2004) https://doi.org/10.1117/12.573085

KEYWORDS: Ocean optics, Waveguides, Dielectrics, Polymers, Refractive index, Microwave radiation, Analytical research, Electro optics, Electromagnetism, Electro optic polymers

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Proceedings Article | 18 October 2004 Paper

Deoxyribonucleic acid (DNA) photonics for space environments

Joshua Hagen, James Grote, Naoya Ogata, Emily Heckman, Perry Yaney, Darnell Diggs, Gurunathan Subramanyam, Robert Nelson, John Zetts, Frank Hopkins, Edward Taylor

Proceedings Volume 5554, (2004) https://doi.org/10.1117/12.562138

KEYWORDS: Cladding, Polymers, Nonlinear optics, Photonics, Ocean optics, Waveguides, Dielectrics, Microwave radiation, Gamma radiation, Gold

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Proceedings Article | 18 June 2004 Paper

DNA photonics

Joshua Hagen, James Grote, Naoya Ogata, John Zetts, Robert Nelson, Darnell Diggs, Frank Hopkins, Perry Yaney, Larry Dalton, Stephen Clarson

Proceedings Volume 5351, (2004) https://doi.org/10.1117/12.533171

KEYWORDS: Cladding, Chromophores, Polymers, Electro optics, Electrodes, Polymethylmethacrylate, Refractive index, Manufacturing, Glasses, Coating

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Proceedings Article | 3 November 2003 Paper

Deoxyribonucleic acid (DNA)-based nonlinear optics

James Grote, Naoya Ogata, Joshua Hagen, Emily Heckman, Michael Curley, Perry Yaney, Morley Stone, Darnell Diggs, Robert Nelson, John Zetts, Frank Hopkins, Larry Dalton

Proceedings Volume 5211, (2003) https://doi.org/10.1117/12.510909

KEYWORDS: Nonlinear optics, Waveguides, Molecules, Multiphoton processes, Electromagnetism, Active optics, Molecular photonics, Photonic devices, Chromophores, Polymethylmethacrylate

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Proceedings Article | 14 July 2003 Paper

Polymeric resonant structures in the reflection geometry for electro-optic modulation and sensing

Robert Nelson, Joseph Haus, Brad Birchfield, James Grote, Frank Hopkins, Darnell Diggs, John Zetts

Proceedings Volume 4991, (2003) https://doi.org/10.1117/12.475407

KEYWORDS: Modulation, Polymers, Electro optics, Reflection, Modulators, Photonic crystals, Electrodes, Electro optic polymers, Prisms, Interfaces

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Proceedings Article | 15 November 2002 Paper

Conductive polymer cladding layers for waveguide electro-optic modulators

Antonio Davis, Perry Yaney, James Grote, Darnell Diggs, Robert Nelson, John Zetts, Frank Hopkins

Proceedings Volume 4788, (2002) https://doi.org/10.1117/12.453694

KEYWORDS: Cladding, Waveguides, Polymers, Refractive index, Electro optic polymers, Electrooptic modulators, Polymer multimode waveguides, Optical testing, Modulators, Epoxies

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Proceedings Article | 11 November 2002 Paper

Nonlinear optic polymer electro-optic modulators for space applications

James Grote, John Zetts, Robert Nelson, Darnell Diggs, Frank Hopkins, Perry Yaney, Cheng Zhang, William Steier, Min-Cheol Oh, Harold Fetterman, Alex K.-Y. Jen, Larry Dalton, Edward Taylor, James Winter, Anthony Sanchez, Douglas Craig

Proceedings Volume 4823, (2002) https://doi.org/10.1117/12.453494

KEYWORDS: Polymers, Cladding, Nonlinear optics, Electro optic polymers, Electrodes, Polymethylmethacrylate, Space operations, Refractive index, Glasses, Chromium

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Proceedings Article | 25 October 2002 Paper

Materials characterization for nonlinear optic polymer waveguide modulator design

Darnell Diggs, James Grote, Antonio Davis, Cheng Zhang, John Zetts, Robert Nelson, Larry Dalton, Perry Yaney, Frank Hopkins

Proceedings Volume 4813, (2002) https://doi.org/10.1117/12.453940

KEYWORDS: Cladding, Polymers, Nonlinear optics, Refractive index, Electro optic polymers, Polymethylmethacrylate, Waveguides, Photoresist materials, Photoresist developing, Polymer multimode waveguides

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Proceedings Article | 3 June 2002 Paper

Optimized cladding materials for nonlinear-optic polymer-based devices

Mary Leovich, Perry Yaney, Cheng Zhang, William Steier, Min-Cheol Oh, Harold Fetterman, Alex K.Y. Jen, Larry Dalton, James Grote, Robert Nelson, John Zetts, Frank Hopkins

Proceedings Volume 4652, (2002) https://doi.org/10.1117/12.469557

KEYWORDS: Cladding, Polymers, Nonlinear optics, Electrodes, Polymethylmethacrylate, Optoelectronics, Electro optic polymers, Glasses, Absorption, Electro optics

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Proceedings Article | 6 December 2001 Paper

Advancements in conductive cladding materials for nonlinear-optic-polymer-based optoelectronic devices

James Grote, John Zetts, Robert Nelson, Frank Hopkins, Jeremy Huddleston, Perry Yaney, Cheng Zhang, William Steier, Min-Cheol Oh, Harold Fetterman, Alex K.Y. Jen, Larry Dalton

Proceedings Volume 4470, (2001) https://doi.org/10.1117/12.449656

KEYWORDS: Cladding, Polymers, Nonlinear optics, Polymethylmethacrylate, Photoresist materials, Photoresist developing, Refractive index, Electro optic polymers, Electrodes, Gold

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SPIE Journal Paper | 1 November 2001

Effect of conductivity and dielectric constant on the modulation voltage for nonlinear optic polymer based opto-electronic devices

James Grote, John Zetts, Robert Nelson, Frank Hopkins, Larry Dalton, Cheng Zhang, William Steier

OE, Vol. 40, Issue 11, (November 2001) https://doi.org/10.1117/12.10.1117/1.1412227

KEYWORDS: Polymers, Cladding, Nonlinear optics, Dielectrics, Polymethylmethacrylate, Modulation, Electrodes, Waveguides, Optoelectronics, Optical engineering

Proceedings Article | 16 May 2001 Paper

Use of indium tin oxide poling electrodes for improved performance of nonlinear polymer-based optoelectronic devices

Robert Nelson, James Grote, Jeremy Huddleston, John Zetts, Frank Hopkins

Proceedings Volume 4290, (2001) https://doi.org/10.1117/12.426902

KEYWORDS: Polymers, Cladding, Waveguides, Electrodes, Nonlinear optics, Modulation, Electro optic polymers, Indium, Tin, Oxides

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Proceedings Article | 16 May 2001 Paper

Maximizing poling efficiency of a 3-layer NLO polymer-based structure using conductive polymer cladding layers

Jeremy Huddleston, James Grote, Robert Nelson, John Zetts, Frank Hopkins

Proceedings Volume 4290, (2001) https://doi.org/10.1117/12.426918

KEYWORDS: Polymers, Cladding, Nonlinear optics, Electrodes, Polymer multimode waveguides, Electro optic polymers, Waveguides, Electro optics, Modulation, Information operations

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Proceedings Article | 29 November 2000 Paper

Conductive cladding layers for electrode-poled nonlinear optic polymer electro-optics

James Grote, John Zetts, Robert Nelson, Frank Hopkins, Cheng Zhang, Larry Dalton, William Steier

Proceedings Volume 4114, (2000) https://doi.org/10.1117/12.408544

KEYWORDS: Polymers, Cladding, Nonlinear optics, Promethium, Electro optic polymers, Electrodes, Polymethylmethacrylate, Electro optics, Polymer multimode waveguides, Waveguides

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Proceedings Article | 19 April 2000 Paper

Effect of dielectric constant on modulation voltage for nonlinear optic polymer-based optoelectronic devices

James Grote, John Zetts, James Drummond, Robert Nelson, Frank Hopkins, Cheng Zhang, Larry Dalton, William Steier

Proceedings Volume 3950, (2000) https://doi.org/10.1117/12.382152

KEYWORDS: Cladding, Dielectrics, Polymers, Modulation, Nonlinear optics, Optoelectronic devices, Electrodes, Analytical research, Optoelectronics, Phase shift keying

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Showing 5 of 26 publications

Proceedings Volume Editor (6)

SPIE Conference Volume | 2 March 2012

RF and Millimeter-Wave Photonics II

SPIE Conference Volume | 16 February 2011

RF and Millimeter-Wave Photonics

SPIE Conference Volume | 16 February 2011

Organic Photonic Materials and Devices XIII

SPIE Conference Volume | 15 February 2010

Organic Photonic Materials and Devices XII

SPIE Conference Volume | 12 February 2009

Organic Photonic Materials and Devices XI

Showing 5 of 6 publications

Conference Committee Involvement (31)

Optical Materials and Biomaterials in Security and Defence Systems Technology

10 September 2018 | Berlin, Germany

Organic Photonic Materials and Devices XX

31 January 2018 | San Francisco, California, United States

Optical Materials and Biomaterials in Security and Defence Systems Technology

11 September 2017 | Warsaw, Poland

Organic Photonic Materials and Devices XIX

30 January 2017 | San Francisco, California, United States

Optical Materials and Biomaterials in Security and Defence Systems Technology

28 September 2016 | Edinburgh, United Kingdom

Organic Photonic Materials and Devices XVIII

15 February 2016 | San Francisco, California, United States

Optical Materials and Biomaterials in Security and Defence Systems Technology

23 September 2015 | Toulouse, France

Organic Photonic Materials and Devices XVII

9 February 2015 | San Francisco, California, United States

Optical Materials and Biomaterials in Security and Defence Systems Technology

22 September 2014 | Amsterdam, Netherlands

Organic Photonic Materials and Devices XVI

3 February 2014 | San Francisco, California, United States

Optical Materials and Biomaterials in Security and Defence Systems Technology X

25 September 2013 | Dresden, Germany

Integrated Optics: Devices, Materials, and Technologies XVII

5 February 2013 | San Francisco, California, United States

Organic Photonic Materials and Devices XV

4 February 2013 | San Francisco, California, United States

Optical Materials and Biomaterials in Security and Defence Systems Technology

26 September 2012 | Edinburgh, United Kingdom

Integrated Optics: Devices, Materials, and Technologies XVI

23 January 2012 | San Francisco, California, United States

Organic Photonic Materials and Devices XIV

23 January 2012 | San Francisco, California, United States

RF and Millimeter-Wave Photonics II

22 January 2012 | San Francisco, California, United States

Optical Materials in Defence Systems Technology

19 September 2011 | Prague, Czech Republic

Organic Photonic Materials and Devices XIII

24 January 2011 | San Francisco, California, United States

Integrated Optics: Devices, Materials, and Technologies XV

24 January 2011 | San Francisco, California, United States

RF and Millimeter-Wave Photonics

23 January 2011 | San Francisco, California, United States

Optical Materials in Defence Systems Technology

23 September 2010 | Toulouse, France

Organic Photonic Materials and Devices XII

26 January 2010 | San Francisco, California, United States

Integrated Optics: Devices, Materials, and Technologies XIV

25 January 2010 | San Francisco, California, United States

Optical Materials in Defence Systems Technology

31 August 2009 | Berlin, Germany

Organic Photonic Materials and Devices XI

27 January 2009 | San Jose, California, United States

Integrated Optics: Devices, Materials, and Technologies XIII

26 January 2009 | San Jose, California, United States

Organic Photonic Materials and Devices X

22 January 2008 | San Jose, California, United States

Integrated Optics: Devices, Materials, and Technologies XII

21 January 2008 | San Jose, California, United States

Integrated Optics: Devices, Materials, and Technologies XI

22 January 2007 | San Jose, California, United States

Integrated Optics: Devices, Materials, and Technologies X

23 January 2006 | San Jose, California, United States

Showing 5 of 31 Conference Committees

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