# positions[].organizations[].parent[].label
Texas A&M Engineering Experiment Station (TEES)

# overview
My research interests include photonic signal processing, integrated optics, optical filters (synthesis, analysis and adaptive filters), microwave photonics, polarization optics, optical ring resonators, and dispersion and high speed optical signals.

# keywords[]
4009 Electronics, Sensors And Digital Hardware

# keywords[]
Tunable Thermo-optic Phase Shifters (pss)

# keywords[]
5102 Atomic, Molecular And Optical Physics

# keywords[]
4009 Electronics, Sensors And Digital Hardware

# keywords[]
4009 Electronics, Sensors And Digital Hardware

# keywords[]
Clinical Trials And Supportive Activities

# keywords[]
4603 Computer Vision And Multimedia Computation

# keywords[]
0103 Numerical And Computational Mathematics

# keywords[]
4009 Electronics, Sensors And Digital Hardware

# educationAndTraining[].organization.label
The University of Texas at Austin - (Austin, Texas, United States)

# educationAndTraining[].organization.label
Rutgers University - (New Brunswick, New Jersey, United States)

# educationAndTraining[].organization.label
Stanford University - (Stanford, California, United States)

# publications[].label
Multi-port add/drop router using UV-induced gratings in planar waveguides

# publications[].label
Programmable Polarization-Independent Electrooptically Matched Bandpass Filter in Ti: LiNbO3

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
In-Line Liquid Crystal Microcell Polarimeters and Waveplates for High Speed Polarization Analysis and Control

# publications[].label
Optimization of ultrafast laser parameters for 3D micromachining of fused silica

# publications[].label
Two-axis tracking using translation stages for a lens-to-channel waveguide solar concentrator.

# publications[].label
Getting more on lithium niobate: Vertical integration

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Intruder signature analysis from a phase-sensitive distributed fiber-optic perimeter sensor - art. no. 6770OK

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Phase engineering applied to integrated optical filters

# publications[].label
Demonstration of a Stand-alone Cylindrical Fiber Coil for Optical Amplifiers

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Vertically integrated As2S3 ring resonator on LiNbO3.

# publications[].label
Boundless-range phase shifters and sideband reduction

# publications[].label
Design of a lens-to-channel waveguide system as a solar concentrator structure.

# publications[].label
Wide-Band System Identification Using Multiple Tones With Allpass Filters and Square-Law Detectors

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
A tunable dispersion compensating MEMS all-pass filter

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Phase-sensitive detection for lossy ring and cavity-based sensors

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Automatic Monitor-Based Tuning of Reconfigurable Silicon Photonic APF-Based Pole/Zero Filters

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Dispersive properties of optical filters for WDM systems

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
High Efficiency Glass Waveguiding Solar Concentrator

# publications[].label
All-pass filter dispersion compensator using planar waveguide ring resonators

# publications[].label
Rapidly tunable optical add drop multiplexer in Ti : LiNbO3 utilizing non-polarizing beam splitters

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Investigation of a polarization controller in Ti:LiNbO3 near 1530nm wavelength

# publications[].label
Synthesis of Optical IIR Allpass Filters Using Layer Peeling Algorithm Based on Eigenvalue Problem

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Demonstration of an As2S3-on-LiNbO3 Grating Coupler and its Application of Measuring a Grating-based Filter

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
A planar waveguide single-detector polarimeter

# publications[].label
Hybrid ${
m As}_{2}{
m S}_{3}$ Mach-Zehnder Interferometer Prepared by Magnetron Sputtering and its Photodarkening Effect

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Two-Stage Taper Enhanced Ultra-High $Q$ As$_{2}$S$_{3}$ Ring Resonator on LiNbO$_{3}$

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Dispersion compensation of a 1x N passive optical router with low loss, a flat passband, and low cross talk.

# publications[].label
Near-field scanning optical microscopy imaging of multimode interference.

# publications[].label
Chromatic and polarization mode dispersion measurement technique using phase-sensitive sideband detection

# publications[].label
Vertically integrated As2S3 ring resonator on LiNbO3.

# publications[].label
Photonic processing using integrated optical filters

# publications[].label
A lens-to-channel waveguide solar concentrator

# publications[].label
Comparison of Cascade, Lattice, and Parallel Filter Architectures

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Multistage dispersion compensator using ring resonators.

# publications[].label
Long Fiber-optic Perimeter Sensor: Signature Analysis

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Programmable polarization-independent electrooptic matched bandpass filter utilizing symmetric branch beam splitters in Ti : LiNbO3

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Optical all-pass filters for polarization mode dispersion compensation.

# publications[].label
A Better Predictor for Waveguide Outcoupling by Surface Texturing or Roughness

# publications[].label
Multi-channel dispersion slope compensating optical allpass filter

# publications[].label
A general planar waveguide autoregressive optical filter

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Fabrication and Measurement of Sidewall Gratings Integrated in Hybrid As2S3-Ti:LiNbO3 Optical Waveguides

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Real-time processing of a phase-sensitive distributed fiber optic perimeter sensor

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Buried As<inf>2</inf>S<inf>3</inf> strips for high-mode-confinement optical waveguiding

# publications[].label
Optical waveguide gratings in chalcogenide glass - art. no. 689607

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Optical filter architecture for approximating any 2 X 2 unitary matrix.

# publications[].label
A novel NLFM waveform generator using tunable integrated optical ring resonators: simulation and proof of concept experiment

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Low-loss chalcogenide waveguides on lithium niobate for the mid-infrared.

# publications[].label
Ultra-high Q long-path As2S3 ring resonator on LiNbO3

# publications[].label
Ultra-high Q long-path As2S3 ring resonator on LiNbO3

# publications[].label
Fully reconfigurable compact RF photonic filters using high-Q silicon microdisk resonators

# publications[].label
Compact Fully Reconfigurable Multi-Stage RF Photonic Filters Using High-Q Silicon Microdisk Resonators

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
High speed liquid crystal devices for polarization control and analysis

# publications[].label
Characterization of sidewall Bragg gratings using optical low-coherence interferometry with a broadband source

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Compact integrated tunable chromatic dispersion compensator with a 4000 ps/nm tuning range

# publications[].label
Nonparaxial scalar diffraction theory modifications for improved efficiency estimation

# publications[].label
Ultra-high Q long-path As2S3 ring resonator on LiNbO3

# publications[].label
A Hybrid DMD-Waveguide Optical Signal Processor

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Fast amplitude and delay measurement for characterization of integrated optic devices

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
An integrated tunable chromatic dispersion compensator for 40 Gb/s NRZ and CSRZ

# publications[].label
Integrated waveguide allpass filter tunable dispersion compensators

# publications[].label
Special Issue on Signal analysis Tools for Optical Information Processing - Editorial

# publications[].label
A Novel Broadband Photonic RF Phase Shifter

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Integrated Scalable Continuously Tunable Variable Optical Delay Lines (Invited)

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Automatic Monitor-Based Tuning of an RF Silicon Photonic 1X4 Asymmetric Binary Tree True-Time-Delay Beamforming Network

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Automatic Monitor-Based Tuning of RF Silicon Photonic True-Time-Delay Beamforming Networks

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
High Resolution Optical Phase Response Measurement Using Single Sideband Modulation

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Photonic Processing Using Integrated Optical Filters

# publications[].label
Photonic microwave filtering using coherently coupled integrated ring resonators

# publications[].label
Optimization of Filter Architecture for High-Order RF-Photonic Filters on SOI

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Reset-free integrated polarization controller using phase shifters

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
A multiport frequency band selector with inherently low loss, flat passbands, and low crosstalk

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Er-Doped Optical Waveguide Amplifiers in X-Cut Lithium Niobate by Selective Codiffusion

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Optical time-frequency scaling for signal processing applications

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Comparison of cascade, baseline, and lattice architectures for ultra-compact RF photonic filters on SOI

# publications[].label
Demonstration of an integrated, tunable high resolution true time delay line

# publications[].label
A hitless reconfigurable add-drop multiplexer for WDM networks utilizing planar waveguides, thermo-optic switches and UV-induced gratings

# publications[].label
Fabrication of LiNbO3-As2S3 waveguides for beam steering applications

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Femtosecond-laser-based prototyping of light pipe circuits

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Ultra-high Q long-path As2S3 ring resonator on LiNbO3

# publications[].label
Tunable dispersion compensators based on optical allpass filters

# publications[].label
Sensor analysis and initial assessment of detectable first hoof contacts and last break-overs as unique signal fluctuations for equine gait analysis.

# publications[].label
Fully Reconfigurable Compact RF Photonic Filters Using High-Q Silicon Microdisk Resonators

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
First Demonstration of a Novel 2D-Waveguiding Solar Concentrator

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Bandpass filter demonstration using all-pass filter decomposition and ring resonators

# publications[].label
Optimal dispersion of optical filters for WDM systems

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Increasing the free spectral range of silica waveguide rings for filter applications.

# publications[].label
Long Fiber-Optic Perimeter Sensor: Signature Analysis

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Patterning chalcogenide glass by direct resist-free thermal nanoimprint

# publications[].label
Deterministic analysis of endless tuning of polarization controllers

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Fully reconfigurable compact RF photonic filters using high-Q silicon microdisk resonators.

# publications[].label
First Demonstration of an As(2)S(3)-on-LiNbO(3) Ring Resonator

# publications[].label
Optical all-pass filters for phase response design with applications for dispersion compensation

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Optimal dispersion of optical filters for WDM systems

# publications[].label
A tunable ultra-narrowband filter for subcarrier processing and optical monitoring

# publications[].label
A Parametric Approach for Exploring Grating Coupler Design Space

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Design of a hybrid AsS-Ti:LiNbO optical waveguide for phase-matched difference frequency generation at mid-infrared.

# publications[].label
Boundless-range phase shifters and sideband reduction

# publications[].label
First demonstration of an As<inf>2</inf>S<inf>3</inf>-on-LiNbO<inf>3</inf>ring resonator

# publications[].label
High frequency Pound-Drever-Hall sensing of ring resonator cavities

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
General IIR optical filter design for WDM applications using all-pass filters

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Boundless-range optical phase modulator for high-speed frequency-shift and heterodyne applications

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Rapidly tunable optical add-drop multiplexer utilising relaxed beam splitters

# publications[].publisher
Institution of Engineering and Technology (IET)

# publications[].label
Electro-optically tunable vertically integrated chalcogenide interferometer on LiNbO<inf>3</inf>

# publications[].label
Optical Delay Lines Based on Optical Filters

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Optical characterization of a-As2S3 thin films prepared by magnetron sputtering

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Buried As2s3 Strips for High-Mode-Confinement Optical Wavegulding

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Fabrication of Advanced Glass Light Pipes for Solar Concentrators

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Resonant enhanced low-power nonlinear tuning capability using an As2S3 waveguide on LiNbO3

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Optimization of electro-optic phase shifters for integrated optical phased arrays

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Light Pipes for CPV: Simulation and Measurement of Sidewall Loss Mechanisms

# publications[].label
A planar waveguide single-detector polarimeter

# publications[].label
Gain improvement of Er-Ti:LiNbO 3 waveguide amplifier by an As 2S 3 overlay waveguide

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Demonstration of an intermediate-scale lens-to-channel waveguide solar concentrator

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Analysis of polarization-coupled infinite impulse response optical filters

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Linear photonic frequency discriminator on As₂S₃-ring-on-Ti:LiNbO₃ hybrid platform.

# publications[].label
Planar waveguide optical filters and polarization transformers for compensating dispersive effects

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Glass Light Pipes for Solar Concentration

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
A tunable ultra-narrowband filter for subcarrier processing and optical monitoring

# publications[].label
Analysis of Scalable PMD Compensators Using FIR Filters and Wavelength-Dependent Optical Power Measurements

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Integrated Optic Single-Ring Filter for Narrowband Phase Demodulation

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Planar waveguide optical spectrum analyzer using a UV-induced grating

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Selective Co-doped Erbium Ti:LiNbO3 Waveguide Amplifiers

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Vertically integrated As2S3 waveguides on lithium niobate waveguides

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Planar Waveguide Devices for PMD Analysis and Compensation

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Electro-Optically Tunable As2S3 Mach-Zehnder Interferometer on LiNbO3 Substrate

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Subband All-Pass Filter Architectures With Applications to Dispersion and Dispersion-Slope Compensation and Continuously Variable Delay Lines

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Efficient architectures for exactly realizing optical filters with optimum bandpass designs

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Compact Bends for Achieving Higher Integration Densities for LiNbO3 Waveguides

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
High resolution optical phase response measurement using single sideband modulation

# publications[].label
General optical all-pass filter structures for dispersion control in WDM systems

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Modeling Asymmetric Resonances Using an Optical Filter Approach

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Demonstration of an As2S3-on-LiNbO3 Grating Coupler and its Application of Measuring a Grating-based Filter

# publications[].publisher
American Society for Engineering Education

# publications[].label
Integrated resonance-enhanced variable optical delay lines

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
A novel optical vector spectral analysis technique employing a limited-bandwidth detector

# publications[].label
In-Motion Optical Sensing for Assessment of Animal Well-Being

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
In-line liquid-crystal microcell polarimeter for high-speed polarization analysis.

# publications[].label
Integrated all-pass filters for tunable dispersion and dispersion slope compensation

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
A 25-40 GHz Wideband Tunable Silicon Photonic Reconfigurable Receiver Front-End for mm-wave Channel Selection/Jammer Rejection

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Versatile Integrated PMD Emulation and Compensation Elements

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Characterization of Light Pipe Optical Loss for Concentrating Solar Applications

# publications[].label
NLFM waveform generation using tunable integrated optical ring resonators: simulation and proof of concept experiment.

# publications[].label
Polarization-independent rapidly tunable optical add-drop multiplexer utilizing non-polarizing beam splitters in Ti:LiNbO3

# publications[].label
Complex optical spectrum analysis using a tunable dispersive optical filter

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
Fully Reconfigurable Compact RF Photonic Filters Using High-Q Silicon Microdisk Resonators

# publications[].label
Integrated optical spectral polarimeter for signal monitoring and feedback to a polarization-mode dispersion compensator

# publications[].label
Long fiber-optic perimeter sensor: Signature analysis

# publications[].label
Programmable Polarization-Independent Electrooptically Matched Bandpass Filter in Ti:LiNbO<inf>3</inf>

# publications[].label
Postfabrication optimization of an autoregressive planar waveguide lattice filter.

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Highly sensitive compact refractive index sensor based on phase-shifted sidewall Bragg gratings in slot waveguide.

# publications[].label
A Small-scale Concentrating Solar Thermal System

# publications[].publisher
SPIE, the international society for optics and photonics

# publications[].label
Device-Under-Test Jones Matrix Extraction Algorithm With Device TE/TM Reference Frame

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# publications[].label
High speed liquid crystal devices for polarization control and analysis

# publications[].label
Design Optimizations for a Lens-to-Channel Waveguide Solar Concentrator

# publications[].publisher
Institute of Electrical and Electronics Engineers (IEEE)

# researcherOn[].awardedBy.label
United States Department of Energy - (Washington D.C., District of Columbia, United States)

# researcherOn[].label
FFATA:  Chalcogenide Waveguides for Broadband Four Wave Mixing

# researcherOn[].awardedBy.label
National Science Foundation - (Arlington, Virginia, United States)

# researcherOn[].label
EARS: A Wideband Frequency-Agile Silicon Photonic mm-Wave Receiver with Automatic Jammer Suppression via Rapidly Reconfigurable Optical Notch Filters

# researcherOn[].awardedBy.label
National Science Foundation - (Arlington, Virginia, United States)

# researcherOn[].label
Spectrum and Energy Efficient Silicon Photonic Millimeter-wave Remote Antenna Units for Radio over Fiber Application

# researcherOn[].awardedBy.label
National Science Foundation - (Arlington, Virginia, United States)

# streetAddress
Texas A&M University; Electrical Engineering; 3128 TAMU

# organizations[]
Texas A&M Engineering Experiment Station (TEES)

# schools[]
Texas A&M Engineering Experiment Station (TEES)

# etdChairOf[].label
Vandrasi, Vivek (2011-10). Optical Filter Design: Gain Analysis and Tolerance Analysis. Master's Thesis.

# etdChairOf[].label
Zhou, Yifeng (2014-12). Chalcogenide-on-Lithium Niobate Resonator Waveguides and their nonlinear applications. Doctoral Dissertation.

# etdChairOf[].label
Webb, Jacob Douglas (2011-08). Fabrication of Annealed Proton-Exchanged Waveguides for Vertical Integration. Master's Thesis.

# etdChairOf[].label
Kim, Jae Hyun (2013-04). Novel Birefringent Frequency Discriminator for Microwave Photonic Links. Doctoral Dissertation.

# etdChairOf[].label
Hu, Chehao (2018-08). Light Pipe Design for Solar Concentrator. Doctoral Dissertation.

# etdChairOf[].label
Zhang, Chen (2017-05). Efficient Light Coupling for Grating Cavity Using Arsenic Trisulfide Grating Coupler. Doctoral Dissertation.

# etdChairOf[].label
Chen, Qi (2014-08). Arsenic Trisulfide on Lithium Niobate Waveguides for Nonlinear Infrared Optics. Doctoral Dissertation.