Article
Physics, Multidisciplinary
I. M. Efimov, N. A. Vanyushkin, A. H. Gevorgyan, S. S. Golik
Summary: We propose a new optical biosensor based on a SiO2/Si photonic crystal with a defect layer, which can determine the concentration of SARS-CoV-2 in water by detecting the shift in defect mode. The study considers two different dependency models between the refractive index of the defect layer and the pathogen concentration in water. Optimal parameters of the photonic crystal are determined, and it is demonstrated that operating in reflection mode is more advantageous in the presence of absorption. The study obtains the wavelength dependence of the defect mode on the SARS-CoV-2 concentration and determines the sensitivity of the sensor.
Article
Optics
C. Shirpurkar, J. Zang, K. Y. Yang, D. Carlson, S. P. Yu, E. Lucas, S. Pericherla, J. Yang, M. Guidry, D. Lukin, G. H. Ahn, J. Lu, L. Trask, F. Aflatouni, J. Vuckovic, S. B. Papp, P. J. Delfyett
Summary: The experimental demonstration presents a 400 Gbit/s optical communication link utilizing wavelength-division multiplexing and mode-division multiplexing, with a novel 400 GHz frequency comb source and 4x4 mode-division multiplexer structures for increased data capacity.
Article
Nanoscience & Nanotechnology
Dries Vercruysse, Neil Sapra, Ki Youl Yang, Jelena Vuckovic
Summary: The ability of photonic crystal waveguides to confine and slow down light makes them ideal for enhancing the performance of various photonic devices, but integrating them in applications poses design challenges such as engineering mode dispersion and coupling devices. This study addresses these challenges through photonic inverse design, demonstrating a slow-light PCW optical phased array with a wide steering range.
Article
Engineering, Electrical & Electronic
Zishan Zeng, Longhui Lu, Pengxiang He, Deming Liu, Minming Zhang
Summary: An ultra-compact dual-mode mode-division multiplexing photonic integrated circuit has been designed and experimentally demonstrated, capable of on-chip optical signal mode-order-based routing and mode-independent broadcasting. The fabricated MDM circuit shows low excess loss and crosstalk, with only 1.2 dB power penalty introduced during single-channel 25 Gbit/s optical signal transmission.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Chemistry, Analytical
Clara Whyte Ferreira, Roselien Vercauteren, Laurent A. Francis
Summary: A robust fabrication method for stable mesoporous silicon membranes was developed using standard microfabrication techniques, passivated through atomic layer deposition of different metal oxides for biosensing applications, demonstrating selective optical detection capabilities for Bacillus cereus bacterial lysate.
Article
Biophysics
Samuel Davies, Yubing Hu, Nan Jiang, Yunuen Montelongo, Andreas Richardson, Jeff Blyth, Ali K. Yetisena
Summary: A facile laser-induced dual polymerization method has been developed to fabricate holographic hydrogel sensors for continuous and reversible colorimetric determination of pH variations in serum. The optimized sensors demonstrate excellent performance, allowing pH monitoring within the physiological range and resisting interference from electrolytes, saccharides, and proteins. This technology has the potential to be applied in the field of biomedicine and is of great significance for blood gas disorder identification and wound healing monitoring.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Engineering, Multidisciplinary
V. R. Balaji, M. A. Ibrar Jahan, T. Sridarshini, S. Geerthana, Arun Thirumurugan, Gopalkrishna Hegde, R. Sitharthan, Shanmuga Sundar Dhanabalan
Summary: In this paper, a novel 2D Photonic Crystal-based cancer biosensor is proposed, which utilizes resonant cavities and machine learning techniques for early and accurate cancer detection. The biosensor has a high-quality factor and sensitivity.
Article
Optics
Xiaofang Xu, Hao Zhang, Jingyu Huang, Nan Zhai, Yaqi Liu
Summary: This study presents the design of a logic gate and an optical half-adder based on photonic crystal and BPSK signals. The proposed devices exhibit a compact structure, short response time, and large margin difference of the output signals, making them potentially valuable for all-optical information processing.
Article
Chemistry, Multidisciplinary
Javier Fonseca, Lingxin Meng, Pedro Moronta, Inhar Imaz, Cefe Lopez, Daniel Maspoch
Summary: Controlling the size of COF particles allows for the fabrication of porous photonic crystals (PhCs) with a face-centered cubic arrangement. By adsorbing species within the pores of COF particles, the Bragg reflection can be altered, allowing for the modulation of the structure and properties of the PhCs. Given the abundance of existing COFs and their diverse properties, this discovery is expected to enable the development of colloidal PhCs with unprecedented functionality.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Miguel Camacho, Brian Edwards, Nader Engheta
Summary: This research explores the use of a transmissive cavity with a tailored dielectric distribution and multi-frequency feedback loop to calculate solutions for multiple mathematical problems simultaneously. By demonstrating the linearity of the wave equation, the study shows the ability to solve multiple independent mathematical problems within the same device.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Haejun Chung, Junjeong Park, Svetlana Boriskina
Summary: Integrated silicon photonic waveguide biosensors have shown great potential for low-cost point-of-care diagnostic due to efficient device functionalization and simple scalable manufacturing. By using computational inverse design and high-contrast probe cleavage detection (HCCD) technique, the proposed biosensors demonstrate high sensitivity and low sensitivity to noise.
Article
Polymer Science
Svetlana Sizova, Ruslan Shakurov, Tatiana Mitko, Fedor Shirshikov, Daria Solovyeva, Valery Konopsky, Elena Alieva, Dmitry Klinov, Julia Bespyatykh, Dmitry Basmanov
Summary: This study proposes quartz surface coatings for the efficient sorption and detection of biomolecules using a photonic crystal surface mode biosensor. The sorption and deposition of biomolecules are analyzed by monitoring changes in the propagation parameters of optical modes. The results indicate that dextran with a Mw of 500 kDa and anchor epoxy groups shows promising potential for protein detection in optical biosensors.
Review
Materials Science, Multidisciplinary
Bo Liu, Paul R. Ohodnicki
Summary: The state of the art in single crystal fiber fabrication has evolved over the past five decades, with edge-defined film-feed growth, micro-pulling down, and laser heated pedestal growth being the major techniques used. Solid state crystal growth and temperature gradient technology have also become very active recently, particularly in the production of small size SCF. These optical fiber growth techniques serve as powerful material research tools globally for both scientific inquiry and practical applications, with a wide range of applications including temperature sensing, radiation environment sensing, fiber laser and power delivery, chemical and medical applications, imaging applications, and piezoelectric applications. The article provides a comprehensive overview of the development of SCF growth techniques and their applications, offering insights into the vast possibilities offered by SCF and discussing future trends in single crystal fiber development.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Review
Chemistry, Analytical
B. M. Azizur Rahman, Charusluk Viphavakit, Ratchapak Chitaree, Souvik Ghosh, Akhilesh Kumar Pathak, Sneha Verma, Natsima Sakda
Summary: The increasing use of nanomaterials and scalable, high-yield nanofabrication process is revolutionizing the development of novel biosensors. This review provides a comprehensive overview of major scientific achievements in nano-biosensors based on optical fiber, nanomaterials and terahertz-domain metasurface-based refractometric, labelled and label-free nano-biosensors.
Article
Chemistry, Analytical
Dusan Gostimirovic, Richard Soref
Summary: In this work, we present a compact toolkit of inverse-designed, topologically optimized silicon photonic devices that can be arranged in a plug-and-play fashion to realize various photonic integrated circuits. The included devices, such as splitters, crossovers, and resonators, enable the circuits to achieve low insertion loss and low crosstalk. The use of inverse-design approach allows for more flexible design of individual devices, enhancing the overall circuit architecture and enabling low-complexity circuit design.
Article
Physics, Applied
Uwe Niedermayer, Dylan S. Black, Kenneth J. Leedle, Yu Miao, Robert L. Byer, Olav Solgaard
Summary: This study demonstrates a compact technique for compressing electron pulses to attosecond length using dielectric laser acceleration, with reasonably small energy spread. By using multiple devices on the same chip to compress and accelerate the pulses, coherent movement and transverse focusing are achieved, serving as a prototype injector for scalable DLA based on alternating-phase focusing.
PHYSICAL REVIEW APPLIED
(2021)
Article
Engineering, Electrical & Electronic
Simon Lorenzo, Anne Kroo, Yu-Po Wong, Olav Solgaard
Summary: This paper presents a temperature-compensated optical fiber platform for silicon sensors. It demonstrates that thermal effects in silicon sensors are significant at operational temperatures, but can be compensated using a nano-fabricated temperature sensor. The platform shows sufficient sensitivity and bandwidth to reduce thermal signals in silicon pressure sensors and microphones significantly.
IEEE SENSORS JOURNAL
(2021)
Article
Physics, Multidisciplinary
Zhexin Zhao, Kenneth J. Leedle, Dylan S. Black, Olav Solgaard, Robert L. Byer, Shanhui Fan
Summary: The study suggests using optical beat notes to compress electron pulses, extending the optical control of electron beams which is crucial in compact electron beam systems. It is also found that the dominant frequency of the electron charge density changes continuously along its drift trajectory, potentially opening up new opportunities in coherent interaction between free electrons and quantum or classical systems.
PHYSICAL REVIEW LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Simon Lorenzo, Olav Solgaard
Summary: We have developed a wavelength-multiplexed system of optical fiber-based photonic-crystal microphones for acoustic source localization. The system is capable of accurately localizing sound sources in the environment with a wide bandwidth and high sensitivity.
IEEE SENSORS JOURNAL
(2022)
Article
Physics, Applied
Kenneth J. Leedle, Uwe Niedermayer, Eric Skaer, Karel Urbanek, Yu Miao, Payton Broaddus, Olav Solgaard, Robert L. Byer
Summary: This study presents two compact designs of ultrafast electron injectors with integrated focusing, which offer high brightness electron beams. These electron sources are suitable for various applications, including dielectric laser accelerator experiments and ultrafast electron diffraction.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Nina Vaidya, Olav Solgaard
Summary: This article introduces the use of immersion optics to create systems with improved optical concentration and coupling. The immersion graded index optical concentrators, which do not require tracking of the light source, are described through theory, simulations, and experiments. A generalized design guide equation is presented to create various immersion graded index optics based on concentration, refractive index, height, and efficiency requirements. Glass and polymer fabrication techniques are also introduced for creating broadband transparent graded index materials with large refractive index ranges. Prototype devices demonstrate 3x optical concentration with over 90% efficiency.
MICROSYSTEMS & NANOENGINEERING
(2022)
Article
Chemistry, Analytical
Sandra Nicole Manosalvas-Kjono, Ronald Quan, Olav Solgaard
Summary: This study introduces an MEMS amplitude and phase monitor that can simultaneously sense and drive the movement of micro-actuators, providing real-time and accurate position monitoring.
Article
Nanoscience & Nanotechnology
Sunil Pai, Carson Valdez, Taewon Park, Maziyar Milanizadeh, Francesco Morichetti, Andrea Melloni, Shanhui Fan, Olav Solgaard, David A. B. Miller
Summary: Programmable feedforward photonic meshes of Mach-Zehnder interferometers are computational optical circuits that have many classical and quantum computing applications. A new architecture capable of power monitoring any waveguide segment in a feedforward photonic circuit is designed and experimentally verified. The scheme is experimentally realized in a 6 x 6 triangular mesh silicon photonic chip and can resolve optical powers in a 3 x 3 triangular mesh based on response measurements in only two output detectors.
Article
Multidisciplinary Sciences
Sunil Pai, Zhanghao Sun, Tyler W. Hughes, Taewon Park, Ben Bartlett, Ian A. D. Williamson, Momchil Minkov, Maziyar Milanizadeh, Nathnael Abebe, Francesco Morichetti, Andrea Melloni, Shanhui Fan, Olav Solgaard, David A. B. Miller
Summary: Integrated photonic neural networks offer a promising and energy-efficient platform for machine learning with wide-ranging scientific and commercial applications. By combining Mach-Zehnder interferometer mesh networks with nonlinearities, photonic neural networks efficiently transform optically encoded inputs. We experimentally trained a three-layer, four-port silicon photonic neural network using programmable phase shifters and optical power monitoring, achieving high accuracy comparable to digital simulations in image recognition tasks.
Article
Optics
Sunil Pai, Taewon Park, Marshall Ball, Bogdan Penkovsky, Michael Dubrovsky, Nathnael Abebe, Maziyar Milanizadeh, Francesco Morichetti, Andrea Melloni, Shanhui Fan, Olav Solgaard
Summary: With the increasing popularity of blockchain technology and cryptocurrency, photonic computing has emerged as an efficient hardware platform to reduce the energy costs of verifying transactions in decentralized cryptonetworks. To mitigate the sensitivity to photonic hardware errors, the proposed LightHash cryptographic scheme implements robust and low-bit precision matrix multiplication in programmable silicon photonic networks. The scheme also includes an error mitigation scheme and simulations to analyze energy-efficiency trade-offs. This hardware solution provides an error-resistant and efficient option for decentralized photonic blockchains.
Proceedings Paper
Engineering, Electrical & Electronic
Sunil Pai, Nathnael Abebe, Michael Dubrovsky, Rebecca L. Hwang, Maxim Karpov, Bogdan Penkovsky, David A. B. Miller, Olav Solgaard
Summary: The proposed optical proof-of-work scheme utilizes programmable photonic network to encode data and offers energy-efficient optical alternatives to current cryptocurrency security schemes by modeling network dispersion for verification of robustness.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Sunil Pai, Nathnael Abebe, Rebecca L. Hwang, David A. B. Miller, Olav Solgaard
Summary: This study focuses on analyzing scalability and design variations for programmable MEMS photonic networks in parallel matrix-vector multiplication. The goal is to improve the efficiency of commercially viable and energy-efficient photonic neural network accelerator chips.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Zhanghao Sun, Ronald Quan, Olav Solgaard
Summary: By phase controlling a 2D MEMS scanner, fast and flexible spatial information sampling for LiDAR systems is achieved. The scanning pattern is designed for desired operational characteristics, facilitating fast LiDAR operation at around 100Hz frame rate.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Huiyang Deng, Kenneth J. Leedle, Yu Miao, Dylan S. Black, Karel Urbanek, Joshua McNeur, Martin Kozak, Andrew Ceballos, Peter Hommelhoff, Olav Solgaard, Robert L. Byer, James S. Harris
Summary: The study successfully demonstrates the first laser acceleration using novel dielectric materials (Al2O3 and Ga2O3) with high laser damage thresholds, providing a new approach for optimizing the performance of dielectric laser accelerators.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Article
Computer Science, Information Systems
Simon Lorenzo, Yu-Po Wong, Olav Solgaard
Summary: This paper describes the design, characterization, and testing of a compact hydrophone capable of measuring acoustic signals from cardiomyocytes. The hydrophone can operate in small liquid volumes and incorporates a microchannel to vent air during immersion. Modeling and experimental results show good sensitivity and precision in detecting nanometer-scale displacements.
