Aditya Malik
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View article: Towards an Inclusive Risk Management Alternative: An Exploration of Cultural Responsivity of Pakistani Takāful Market
Towards an Inclusive Risk Management Alternative: An Exploration of Cultural Responsivity of Pakistani Takāful Market Open
Purpose: This study is conducted to explore the factors that affect the intention of people from different faiths in adopting Takāful. For this purpose, relevant literature was reviewed, and a preempirical conceptual framework was develope…
View article: Confidential and Protected Disease Classifier using Fully Homomorphic Encryption
Confidential and Protected Disease Classifier using Fully Homomorphic Encryption Open
With the rapid surge in the prevalence of Large Language Models (LLMs), individuals are increasingly turning to conversational AI for initial insights across various domains, including health-related inquiries such as disease diagnosis. Ma…
View article: Photonic integration platform for rubidium sensors and beyond
Photonic integration platform for rubidium sensors and beyond Open
We have advanced the heterogeneous silicon nitride photonic platform, enabling operation at the 780 nm wavelength range for rubidium sensors and other applications while remaining operable at high temperatures up to 110 ∘ C. This platform …
View article: A Contrivance to Develop a Brooder for Eggs in Diminutive Scale for Domesticated Poultry
A Contrivance to Develop a Brooder for Eggs in Diminutive Scale for Domesticated Poultry Open
An Egg brooder (incubation unit) was developed in Advance institute of Science and Technology at Maya Group of Colleges, Dehradun to demonstrate and evaluate the performance. The main focus of this research was to bring on a cost efficient…
View article: Extending the spectrum of fully integrated photonics
Extending the spectrum of fully integrated photonics Open
Integrated photonics has profoundly impacted a wide range of technologies underpinning modern society. The ability to fabricate a complete optical system on a chip offers unrivalled scalability, weight, cost and power efficiency. Over the …
View article: Widely tunable, heterogeneously integrated quantum-dot O-band lasers on silicon
Widely tunable, heterogeneously integrated quantum-dot O-band lasers on silicon Open
Heterogeneously integrated lasers in the O-band are a key component in realizing low-power optical interconnects for data centers and high-performance computing. Quantum-dot-based materials have been particularly appealing for light genera…
View article: Integrated dispersion compensated mode-locked quantum dot laser
Integrated dispersion compensated mode-locked quantum dot laser Open
Quantum dot lasers are excellent on-chip light sources, offering high defect tolerance, low threshold, low temperature variation, and high feedback insensitivity. Yet a monolithic integration technique combining epitaxial quantum dot laser…
View article: Quantum Dot Lasers: 1.3 µm Quantum Dot‐Distributed Feedback Lasers Directly Grown on (001) Si (Laser Photonics Rev. 14(7)/2020)
Quantum Dot Lasers: 1.3 µm Quantum Dot‐Distributed Feedback Lasers Directly Grown on (001) Si (Laser Photonics Rev. 14(7)/2020) Open
In article number 2000037, Yating Wan, Justin C. Norman, Yeyu Tong, and co-workers develop a simple, high-yield process for fabricating QD-based single frequency lasers. The four big changes from the approach taken today are: 1) growth on …
View article: 1.3 µm Quantum Dot‐Distributed Feedback Lasers Directly Grown on (001) Si
1.3 µm Quantum Dot‐Distributed Feedback Lasers Directly Grown on (001) Si Open
Distributed feedback (DFB) lasers represent a central focus for wavelength‐division‐multiplexing‐based transceivers in metropolitan networks. Here, the first 1.3 µm quantum dot (QD) DFB lasers grown on a complementary metal‐oxide‐semicondu…
View article: Disaster Resilience in Victorian Schools: Educating Students Using Interactive Lesson Plans
Disaster Resilience in Victorian Schools: Educating Students Using Interactive Lesson Plans Open
The purpose of this project was to help Year 8 students at Emerald Secondary College develop knowledge and awareness about bushfire safety to improve local disaster resilience. To accomplish our goal, we developed online lesson plans that …
View article: On-chip polarization rotator for type I second harmonic generation
On-chip polarization rotator for type I second harmonic generation Open
We demonstrate a polarization rotator integrated at the output of a GaAs waveguide producing type I second harmonic generation (SHG). Form-birefringent phase matching between the pump fundamental transverse electric (TE) mode near 2.0 µm w…
View article: Widely Tunable III–V/Silicon Lasers for Spectroscopy in the Short-Wave Infrared
Widely Tunable III–V/Silicon Lasers for Spectroscopy in the Short-Wave Infrared Open
Integrating III-V gain material with silicon photonic integrated circuits enables the realization of advanced laser sources and full integrated systems for optical communication and sensing applications. The availability of III-V/silicon l…
View article: High-power sub-kHz linewidth lasers fully integrated on silicon
High-power sub-kHz linewidth lasers fully integrated on silicon Open
We demonstrate a fully integrated extended distributed Bragg reflector (DBR) laser with ∼1 kHz linewidth and over 37 mW output power, as well as a ring-assisted DBR laser with less than 500 Hz linewidth. The extended DBR lasers are fabric…
View article: Multi-Spectral Quantum Cascade Lasers on Silicon With Integrated Multiplexers
Multi-Spectral Quantum Cascade Lasers on Silicon With Integrated Multiplexers Open
Multi-spectral midwave-infrared (mid-IR) lasers are demonstrated by directly bonding quantum cascade epitaxial gain layers to silicon-on-insulator (SOI) waveguides with arrayed waveguide grating (AWG) multiplexers. Arrays of distributed fe…
View article: Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics
Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics Open
Integrated ultra-low-loss waveguides are highly desired for integrated photonics to enable applications that require long delay lines, high-Q resonators, narrow filters, etc. Here we present an ultra-low-loss silicon waveguide on 500 nm th…
View article: Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics
Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics Open
Integrated ultra-low-loss waveguides are highly desired for integrated photonics to enable applications that require long delay lines, high-Q resonators, narrow filters, etc. Here, we present an ultra-low-loss silicon waveguide on 500 nm t…
View article: Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics
Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics Open
Integrated ultra-low-loss waveguides are highly desired for integrated photonics to enable applications that require long delay lines, high-Q resonators, narrow filters, etc. Here we present an ultra-low-loss silicon waveguide on 500 nm th…
View article: III-V/silicon photonic integrated circuits for spectroscopic sensing in the 2um wavelength range
III-V/silicon photonic integrated circuits for spectroscopic sensing in the 2um wavelength range Open
III-V/silicon photonic integrated circuits (ICs) promise to enable low cost and miniature optical sensors for trace-gas detection, bio-sensing and environmental monitoring. A lot of these applications can benefit from the availability of p…
View article: III–V-on-Silicon Photonic Integrated Circuits for Spectroscopic Sensing in the 2–4 μm Wavelength Range
III–V-on-Silicon Photonic Integrated Circuits for Spectroscopic Sensing in the 2–4 μm Wavelength Range Open
The availability of silicon photonic integrated circuits (ICs) in the 2–4 μm wavelength range enables miniature optical sensors for trace gas and bio-molecule detection. In this paper, we review our recent work on III–V-on-silicon waveguid…
View article: Compact GaSb/silicon-on-insulator 20x μm widely tunable external cavity lasers
Compact GaSb/silicon-on-insulator 20x μm widely tunable external cavity lasers Open
2.0x µm widely tunable external cavity lasers realized by combining a GaSb gain chip with a silicon photonics waveguide circuit for wavelength selection are demonstrated. Wavelength tuning over 58 nm from 2.01 to 2.07 µm is demonstrated. I…
View article: Heterogeneously integrated III–V-on-silicon 2.3x <i>μ</i>m distributed feedback lasers based on a type-II active region
Heterogeneously integrated III–V-on-silicon 2.3x <i>μ</i>m distributed feedback lasers based on a type-II active region Open
We report on 2.3x μm wavelength InP-based type-II distributed feedback (DFB) lasers heterogeneously integrated on a silicon photonics integrated circuit. In the devices, a III–V epitaxial layer stack with a “W”-shaped InGaAs/GaAsSb multi-q…
View article: On-Chip Mid-Infrared Photothermal Spectroscopy Using Suspended Silicon-on-Insulator Microring Resonators
On-Chip Mid-Infrared Photothermal Spectroscopy Using Suspended Silicon-on-Insulator Microring Resonators Open
Mid-infrared spectroscopic techniques rely on the specific "fingerprint" absorption lines of molecules in the mid-infrared band to detect the presence and concentration of these molecules. Despite being very sensitive and selective, bulky …
View article: III-V-on-silicon integrated micro - spectrometer for the 3 μm wavelength range
III-V-on-silicon integrated micro - spectrometer for the 3 μm wavelength range Open
A compact (1.2 mm2) fully integrated mid-IR spectrometer operating in the 3 μm wavelength range is presented. To our knowledge this is the longest wavelength integrated spectrometer operating in the important wavelength window for spectros…
View article: III-V-on-silicon 2-µm-wavelength-range wavelength demultiplexers with heterogeneously integrated InP-based type-II photodetectors
III-V-on-silicon 2-µm-wavelength-range wavelength demultiplexers with heterogeneously integrated InP-based type-II photodetectors Open
2-µm-wavelength-range silicon-on-insulator (SOI) arrayed waveguide gratings (AWGs) with heterogeneously integrated InP-based type-II quantum well photodetectors are presented. Low insertion loss (2.5-3 dB) and low crosstalk (-30 to -25 dB)…
View article: Photothermal Mid-Infrared Spectroscopy using Fano Resonances in Silicon Microring Resonators
Photothermal Mid-Infrared Spectroscopy using Fano Resonances in Silicon Microring Resonators Open
A novel photothermal mid-infrared spectroscopy method is demonstrated in the 3.5 mu m wavelength range on a polymer analyte using an asymmetric Fano-type resonance in a silicon-on-insulator microring resonator.
View article: Silicon-based Photonic Integrated Circuits for the Mid-infrared
Silicon-based Photonic Integrated Circuits for the Mid-infrared Open
Silicon-based photonic integrated circuits (PICs) operating in the mid-infrared wavelength range are presented. Firstly, it is shown that the operation of the SOI-based waveguide circuits can be pushed beyond the telecom window till a wave…