111 citations · 512 across the 30 of their papers we have counts for
24 papers · 1 filter
Lab-on-a-Chip Optical Biosensor Platform: Micro Ring Resonator Integrated with Near-Infrared Fourier Transform Spectrometer
Kyoung Min Yoo, May Hlaing, Sourabh Jain +3
A micro-ring-resonator (MRR) optical biosensor based on the evanescent field sensing mechanism has been extensively studied due to its high sensitivity and compact device size. How…
Dual-Polarization Bandwidth-Bridged On-Chip Bandpass Sampling Fourier Transform Spectrometer from Visible to Near-Infrared
Kyoung Min Yoo, Ray T. Chen
The on-chip broadband optical spectrometers which cover the entire tissue transparency window (λ=650-1050 nm) with high resolution are highly demanded for the miniaturized bio-sens…
Hexagonal Transverse Coupled Cavity VCSEL Redefining the High-Speed Lasers
Elham Heidari, Hamed Dalir, Moustafa Ahmed +2
The vertical-cavity surface-emitting lasers (VCSELs) have emerged as a vital approach for realizing energy efficient, high speed optical interconnects in the data center and superc…
Extra Loss-free Non-Hermitian Engineered Single Mode Laser Systems
Mohammad H. Teimourpour, Hamed Dalir, Elham Heidari +4
In a laser system non-Hermitian methods such as Parity-Time (PT) Symmetry and Supersymmetry (SUSY) have shown and demonstrated the ability to suppress unwanted lasing modes and, th…
Selective Near Perfect Light Absorbtion by Graphene Monolayer Using Aperiodic Multilayer Microstructures
Iman Zand, Hamed Dalir, Ray T. Chen +1
We investigate 1D aperiodic multilayer microstructures in order to achieve near total absorption in preselected wavelengths in a graphene monolayer. Our structures are designed by…
Plasmonic Optical Modulator based on Adiabatic Coupled Waveguides
Rui Wang, Hamed Dalir, Xiaochuan Xu +4
In atomic multi-level systems, adiabatic elimination is a method used to minimize complicity of the system by eliminating irrelevant and strongly coupled levels by detuning them fr…
Design of a plasmonic-organic hybrid slot waveguide integrated with a bowtie-antenna for terahertz wave detection
Xingyu Zhang, Chi-Jui Chung, Harish Subbaraman +3
Electromagnetic (EM) wave detection over a large spectrum has recently attracted significant amount of attention. Traditional electronic EM wave sensors use large metallic probes w…
Integrated Broadband Bowtie Antenna on Transparent Silica Substrate
Xingyu Zhang, Chi-Jui Chung, Shiyi Wang +4
The bowtie antenna is a topic of growing interest in recent years. In this paper, we design, fabricate, and characterize a modified gold bowtie antenna integrated on a transparent…
Ultra-compact and wide-spectrum-range thermo-optic switch based on silicon coupled photonic crystal microcavities
Xingyu Zhang, Swapnajit Chakravarty, Chi-Jui Chung +3
We design, fabricate, and experimentally demonstrate a compact thermo-optic gate switch comprising a 3.78 um-long coupled L0-type photonic crystalmicrocavities on a silicon-on-insu…
Design of Highly Efficient Hybrid Si-Au Taper for Dielectric Strip Waveguide to Plasmonic Slot Waveguide Mode Converter
Chin-Ta Chen, Xiaochuan Xu, Amir Hosseini +4
In this paper, we design a dielectric-to-plasmonic slot waveguide mode converter based on the hybrid silicon-gold taper. The effects of mode matching, the effective index matching,…
Low-loss mode converter for coupling light into slotted photonic crystal waveguide
Xingyu Zhang, Harish Subbaraman, Amir Hosseini +4
We design, fabricate and experimentally demonstrate a highly efficient adiabatic mode converter for coupling light into a silicon slot waveguide with a slot width as large as 320nm…
Broadband energy-efficient optical modulation by hybrid integration of silicon nanophotonics and organic electro-optic polymer
Xingyu Zhang, Amir Hosseini, Harish Subbaraman +7
Silicon-organic hybrid integrated devices have emerging applications ranging from high-speed optical interconnects to photonic electromagnetic-field sensors. Silicon slot photonic…
Integrated broadband bowtie antenna on transparent substrate
Xingyu Zhang, Shiyi Wang, Harish Subbaraman +5
The bowtie antenna is a topic of growing interest in recent years. In this paper, we design, fabricate, and characterize a modified gold bowtie antenna integrated on a transparent…
Antenna-coupled silicon-organic hybrid integrated photonic crystal modulator for broadband electromagnetic wave detection
Xingyu Zhang, Amir Hosseini, Harish Subbaraman +10
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 mod…
Miniaturized Low-power Electro-optic Modulator Based on Silicon Integrated Nanophotonics and Organic Polymers
Xingyu Zhang, Amir Hosseini, Jingdong Luo +2
We design and demonstrate a compact, low-power, low-dispersion and broadband optical modulator based on electro-optic (EO) polymer refilled silicon slot photonic crystal waveguide…
Highly Efficient Mode Converter for Coupling Light into Wide Slot Photonic Crystal Waveguide
Xingyu Zhang, Harish Subbaraman, Amir Hosseini +1
We design, fabricate and experimentally demonstrate a highly efficient adiabatic mode converter for coupling light into a silicon slot waveguide with a slot width as large as 320nm…
EO-polymer waveguide based high dynamic range EM wave sensors
Che-Yun Lin, Alan X. Wang, Xingyu Zhang +2
In this paper, we present the design and experimental demonstration of a high dynamic range electric field sensor based on electro-optic (EO) polymer directional coupler waveguides…
Improved performance of traveling wave directional coupler modulator based on electro-optic polymer
Xingyu Zhang, Beomsuk Lee, Che-yun Lin +4
Polymer based electro-optic modulators have shown great potentials in high frequency analog optical links. Existing commercial LiNibO3 Mach-Zehnder modulators have intrinsic drawba…
Polymer-based Hybrid Integrated Photonic Devices for Silicon On-chip Modulation and Board-level Optical Interconnects
Xingyu Zhang, Amir Hosseini, Xiaohui Lin +2
The accelerating increase in information traffic demands the expansion of optical access network systems that require cost reduction of optical and photonic components. Low cost, e…
UV imprinting and aligned ink-jet printing for multi-layer patterning of electro-optic polymer modulators
Xiaohui Lin, Tao Ling, Harish Subbaraman +4
The present work demonstrates an electro-optic polymer based Mach-Zehnder (MZ) modulator fabricated utilizing advanced ultraviolet (UV) imprinting and aligned ink-jet printing tech…
High Dynamic Range Electric Field Sensor for Electromagnetic Pulse Detection
Che-Yun Lin, Alan X. Wang, Beom Suk Lee +2
We design a high dynamic range electric field sensor based on domain inverted electro-optic (E-O) polymer Y-fed directional coupler for electromagnetic wave detection. This electro…
Highly Linear, Broadband Optical Modulator Based on Electro-optic Polymer
Xingyu Zhang, Beomsuk Lee, Che-yun Lin +3
In this paper, we present the design, fabrication and characterization of a traveling wave directional coupler modulator based on electro-optic polymer, which is able to provide bo…
Electric field sensor based on electro-optic polymer refilled silicon slot photonic crystal waveguide coupled with bowtie antenna
Xingyu Zhang, Amir Hosseini, Xiaochuan Xu +5
We present the design of a compact and highly sensitive electric field sensor based on a bowtie antenna-coupled slot photonic crystal waveguide (PCW). An electro-optic (EO) polymer…
Wide optical spectrum range, sub-volt, compact modulator based on electro-optic polymer refilled silicon slot photonic crystal waveguide
Xingyu Zhang, Amir Hosseini, Jingdong Luo +2
We design and demonstrate a compact and low-power band-engineered electro-optic (EO) polymer refilled silicon slot photonic crystal waveguide (PCW) modulator. The EO polymer is eng…