Article
Optics
Tao Chen, Zhenming Ding, Zhangqi Dang, Xinhong Jiang, Ziyang Zhang
Summary: This paper presents a function-versatile thermo-optic switch using silicon nitride waveguides embedded in polymer cladding. The device consists of an input splitter, single-mode waveguides for phase shifting, and a thermally controlled output coupler. By combining the high waveguide birefringence of silicon nitride and the thermo-optic property of the polymer, this device can achieve multiple functions such as polarization-independent path switching, beam splitting, and polarization beam splitting.
Article
Engineering, Electrical & Electronic
Baizhu Lin, Shijie Sun, Xueqing Sun, Tianhang Lian, Mu Zhu, Yuanhua Che, Xibin Wang, Daming Zhang
Summary: This article proposes a dual-mode 2 x 2 thermo- optic switch based on Mach-Zehnder interferometer with symmetric directional couplers, which is experimentally demonstrated using polymer waveguides. The switch has the advantages of low power-consumption, independence on light polarization state, and can be applied in future large capacity communication systems.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Optics
Wenkang Wang, Qi Wang, Ronglei Sun, Ya Han, Rui Cheng
Summary: The thermo-optic coefficients of various waveguide modes in a sub-wavelength grating-assisted strip waveguide are found to be closely related to different waveguide parameters. This opens up new possibilities for designing thermo-optic coefficients for integrated-optic waveguides by manipulating sub-wavelength structures. The study has demonstrated the design and experimental demonstration of a mode-insensitive switch using a thermo-optic coefficient-engineered sub-wavelength grating, showing promising performance at the wavelength of 1550 nm.
Article
Chemistry, Analytical
Yuexin Yin, Mengke Yao, Yingzhi Ding, Xinru Xu, Yue Li, Yuanda Wu, Daming Zhang
Summary: This paper demonstrates a polymer/silica hybrid waveguide thermo-optic variable optical attenuator (VOA) that covers the O-band. The device is fabricated using simple and low-cost direct ultraviolet (UV) lithography. The multimode interferences (MMIs) used in the Mach-Zehnder interferometer (MZI)-VOA are optimized for low loss and large bandwidth. The VOA exhibits a high extinction ratio (ER) at 1310 nm and provides significant attenuation over the O-band.
Article
Optics
Xinxing Feng, Yi Jiang, Han Zhang
Summary: A magnetic field sensor based on a mechanical amplifier structure is proposed, using a 3 x 3 coupler-based Michelson interferometer. It can detect weak magnetic fields with fast response time.
Article
Optics
Yulan Zhang, Yongfeng Wu, Yang Han, Jing Wu
Summary: Three curvature optical fiber sensors with different spindle arrays were proposed and demonstrated experimentally. The sensors showed curvature sensitivities of 24.08 dB/m(-1), 28.79 dB/m(-1), and -38.40 dB/m(-1) respectively. The curvature sensitivity was improved by 14.32 dB/m(-1) with the increase of inserted spindles in the array. The sensors have great value in improving curvature sensitivity, in addition to being low-cost and easy to fabricate.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Weike Zhao, Ruoran Liu, Yingying Peng, Xiaolin Yi, Haitao Chen, Daoxin Dai
Summary: A CMOS-compatible polarization switch is proposed and realized, using PDMCs and MZI structure to dynamically control the polarization state and extinction ratio of light.
Article
Physics, Applied
Xuemei Jin, Dongmei Pan, Jingshun Pan, Xuguang Huang
Summary: This paper proposes a novel optical fiber sensor for highly sensitive Hg2+ detection based on the Mach-Zehnder interference (MZI) structure and thiophene-chitosan hydrogel (TCH). The sensor achieved a detection sensitivity of 1.008 x 10(11) mol l(-1) for Hg2+ and a detection limit of 5 x 10(-13) mol l(-1) through theoretical derivation and experimental verification. It also showed performance stability within 24 hours of concentration measurement, with an average standard deviation of 3.2 x 10(-13) mol l(-1) within an hour of observation. Additionally, the sensor has the advantages of specificity, simple preparation, and low cost, making it suitable for monitoring the concentration of Hg2+ in complex water systems.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Physics, Multidisciplinary
Ahmed Nabih Zaki Rashed, Walid Fawzy Zaky, Hazem M. El-Hageen, Aadel M. Alatwi
Summary: This paper reviews the development of optical switching technology and describes a model of all-optical switch-based beam radial. It also analyzes and simulates amplitude decay time and phase decay time using a MATLAB program, as well as demonstrates time response based on amplitude decay time. Furthermore, the study examines previous research results and conducts further analysis using simulators like RSoft Photonics.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Optics
Sidong Fu, Yu Yu, Xinliang Zhang
Summary: The article proposes an electrical crosstalk suppression scheme for optical segmented modulators by introducing a complementary doped region as an insulator, successfully reducing the electrical crosstalk in the modulator and achieving an improvement in crosstalk.
Article
Engineering, Electrical & Electronic
Ke Li, David J. Thomson, Shenghao Liu, Weiwei Zhang, Wei Cao, Callum G. Littlejohns, Xingzhao Yan, Martin Ebert, Mehdi Banakar, Dehn Tran, Fanfan Meng, Han Du, Graham T. Reed
Summary: This article reports an integrated transmitter based on complementary metal-oxide-semiconductor/silicon-photonics, which achieves energy-efficient high-speed data transmission by applying switching current to a passive equalization network-guided silicon Mach-Zehnder modulator.
NATURE ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Hailin Su, Yongxin Wang, Chenshuai Guan, Shuang Yu, Xiaoyang Yu, Wenlong Yang
Summary: A novel fiber optic sensor based on the Mach-Zender interference principle and sensitized with poly-dimethylsiloxane (PDMS) is proposed. The sensor has a sandwich structure of TCF-NCF-TCF and a length of 3 cm. Experimental results show high temperature sensitivity, which can be further improved by coating the sensing zone with PDMS.
OPTICAL FIBER TECHNOLOGY
(2022)
Article
Optics
Gengsong Li, Zhen Liu, Jianxun Feng, Guiyao Zhou, Xuguang Huang
Summary: The fiber optic sensor developed for detecting Pb2+ concentration in aqueous solution utilizes a structure of no-core fiber/few-mode fiber coated with a smart hydrogel membrane. It offers high sensitivity, low cost, and remote detection abilities, making it a promising option for applications requiring precise concentration monitoring.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Xingrui Huang, Yang Liu, Zezheng Li, Huan Guan, Qingquan Wei, Manqing Tan, Zhiyong Li
Summary: The study presents a Michelson interferometer modulator with integrated Bragg reflectors on a silicon-rich nitride-thin-film lithium niobate hybrid platform, achieving high-speed modulation with the highest modulation bandwidth.
Article
Physics, Applied
Shayan Mookherjea, Viphretuo Mere, Forrest Valdez
Summary: This Perspective discusses and compares different approaches for designing high-bandwidth, low-voltage electro-optic devices, such as Mach-Zehnder modulators using thin-film lithium niobate (TFLN), and strategies for incorporating them into larger photonic integrated circuits (PIC).
APPLIED PHYSICS LETTERS
(2023)
