Article
Optics
Nivedita Nair, Sanmukh Kaur, Hardeep Singh
Summary: This study presents the design and implementation of all-optical shift registers that can transfer input information bits in serial or parallel configuration based on clock signal transitions. Utilizing cross-coupled semiconductor optical amplifiers and an optical NOT gate, the shift registers were tested at an operational speed of 100 Gb/s, showing reduced complexity and footprint ideal for photonic integration.
Review
Materials Science, Multidisciplinary
Ke Bi, Qingmin Wang, Jianchun Xu, Lihao Chen, Chuwen Lan, Ming Lei
Summary: All-dielectric metamaterials are a rapidly developing research hotspot in the field of metamaterials, offering low loss and design freedom. The proper choice of fabrication technique is crucial for efficient electromagnetic manipulation. This overview discusses existing fabrication techniques, including methods for different frequency bands and their respective advantages and disadvantages.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Tuomo von Lerber, Vladimir S. Lyubopytov, Lauri Ylinen, Matti Lassas, Franko Kuppers
Summary: We propose a volatile static all-optical memory based on two mutually coupled lasers subject to external optical injection, capable of storing phase information of a slowly-varying electric field. The circuit has a single optical input for write and hold operations and two opposite-sign outputs for reading the memory. Numerical simulations confirm its feasibility and show potential for integrated memory implementations in future all-optical signal processing and computing systems.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Tatjana Gric, Edik Rafailov
Summary: This article discusses a direct tuning approach for semiconductor-based composites, which can significantly change their resonance behavior by manipulating the distribution of carriers. The presented method provides a foundation for simplifying the configuration of tunable composites and can be applied to ultrathin, tunable, and on-chip integrated optical components.
APPLIED SCIENCES-BASEL
(2022)
Article
Optics
Lin Dong, Liming Si, Haoyang Xu, Qitao Shen, Xin Lv, Yaqiang Zhuang, Qingle Zhang
Summary: In this paper, a conformal optical transparent metamaterial absorber (COTMA) is proposed based on the circuit analog optimization method (CAOM), which can enhance the optimization speed and achieve customization in different frequency bands. The COTMA design exhibits transparency, flexibility, and conformal EM absorption.
Article
Materials Science, Multidisciplinary
Run Chen, Jiatong Wang, Zhongze Peng, Jiarui Liu, Min Zhang
Summary: This paper proposes a flexible terahertz switching device based on the electromagnetically induced transparent-like effect, which exhibits significant slow light phenomenon and has large modulation depth and excellent tunable slow light performance. The device also has a low minimum group velocity in slow terahertz light. The flexible substrate of the device makes it suitable for complex environments.
Article
Optics
Amer Kotb, Chunlei Guo
Summary: This study investigates the performance of all-optical multifunctional six basic logic gates at a data rate of 100 Gb/s using semiconductor optical amplifiers, demonstrating that six basic logic functions can be executed with acceptable performance.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Physics, Multidisciplinary
Amer Kotb, Kyriakos E. Zoiros, Wei Li
Summary: By studying the ultrafast performance of the all-optical OR logic gate, it was found that using the proposed two-cascaded semiconductor optical amplifiers scheme at a data rate of 80 Gb/s can achieve logical correctness and a higher quality factor.
Article
Engineering, Electrical & Electronic
Zohreh Vafapour, William Troy, Ali Rashidi
Summary: Colon cancer is a common and deadly disease in the United States, with late detection being a major factor in the high number of deaths. Colonoscopies are currently the main method of detection, but they are invasive and time-consuming. A new diagnostic technique using an InSb based device shows promise in differentiating between healthy and cancerous colon tissue based on spectral responses.
IEEE SENSORS JOURNAL
(2021)
Article
Optics
Tian Ma, Jun Li, Zhenmin Luo
Summary: This study reports a novel method to excite toroidal dipole resonances with high Q factors in all-dielectric metamaterials. By tuning the structural parameters and breaking the rotational symmetry, the excitations of toroidal dipole resonances are achieved. This method is sensitive to the changes in the surrounding refractive index and can be used for monitoring aerogel samples or biochemical analytes.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Jingtong Geng, Liu Yang, Yonggang Zhang
Summary: A novel resonant optical gyroscope (ROG) based on all-optical frequency locking method has been proposed, utilizing a small-size, low-power, and low-cost semiconductor laser to simplify the locking mechanism. It achieves high-precision frequency measurement and shows potential to be a high-precision and integration angular velocity sensor.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Optics
Nivedita Nair, Sanmukh Kaur, Hardeep Singh
Summary: This paper presents a novel design of 2-bit ripple carry adder based on semiconductor optical amplifier Mach Zehnder Interferometer (SOA-MZI) configuration at 100Gb/s. XOR, OR, and AND gates are employed as basic gates in the design, and the performance of the device is analyzed in terms of extinction ratio, contrast ratio, quality factor, and amplitude modulation at the output.
Article
Chemistry, Multidisciplinary
Bingchen Han, Junyu Xu, Pengfei Chen, Rongrong Guo, Yuanqi Gu, Yu Ning, Yi Liu
Summary: An all-optical non-inverted parity generator and checker based on SOAs are proposed using FWM and XGM effects. The design improves ER and OSNR by adjusting the center wavelength and using SA.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Ye Luo, Chunlei Sun, Maoliang Wei, Hui Ma, Yingchun Wu, Zequn Chen, Hao Dai, Jialing Jian, Boshu Sun, Chuyu Zhong, Junying Li, Kathleen A. Richardson, Hongtao Lin, Lan Li
Summary: Photonic mechanical sensors offer advantages over electronic counterparts, but existing flexible photonics strategies face challenges. To address these, a waveguide-integrated flexible mechanical sensor based on photonic crystal microcavities is proposed, with exceptional performance and potential applications.
Article
Optics
Xiaoman Li, He Feng, Maojin Yun, Zan Wang, Yigu Hu, Yunjiao Gu, Fenghua Liu, Weiping Wu
Summary: A polarization-independent, all-optically modulated multiband metamaterial coherent perfect absorber (CPA) is proposed, which can be controlled by changing the phase difference of two incident light beams. The absorber can be modulated at telecommunication wavelengths, allowing for simultaneous modulation at 1310 nm and 1550 nm. Switchable logical gate states can also be achieved. The absorber utilizes bound states in the continuum (BIC) mode to realize another absorption band, expanding its application range and flexibility. The results suggest promising applications in optical switches, smart multi-band absorbers, and telecom devices.
OPTICS AND LASER TECHNOLOGY
(2023)