Article
Optics
N. Toropov, S. Zaki, T. Vartanyan, M. Sumetsky
Summary: A simple lithographic method for fabricating microresonator devices at the optical fiber surface is presented. By using a CO2 laser to remove the polymer coating and etching the fiber in hydrofluoric acid solution, a chain of silica bottle microresonators with nanoscale radius variation is created. The method allows for larger fiber radius variation compared to previous approaches in SNAP technology.
Article
Engineering, Electrical & Electronic
Huibo Hong, Runai Quan, Xiao Xiang, Wenxiang Xue, Honglei Quan, Wenyu Zhao, Yuting Liu, Mingtao Cao, Tao Liu, Shougang Zhang, Ruifang Dong
Summary: This paper reports a fiber-optic two-way quantum clock synchronization experiment, demonstrating the feasibility of achieving femtosecond-scale synchronization precision over a distance of 50 km. Comparable performance can also be achieved even with independent reference clocks in combination with microwave frequency transfer technology.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Xiaoran Xie, Xiupu Zhang
Summary: This paper investigates the use of 1-bit bandpass delta-sigma modulation as a potential solution for the fifth generation mobile fronthaul transmission system. It proposes two novel delta sigma modulators to compensate for the phase and amplitude distortion induced by the bandpass filter. The effectiveness of these designs is verified through simulation and experimentation.
OPTICS COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Xu-Bin Lin, Yu-Xin Gao, Jin-Gan Long, Jia-Wen Wu, Wei-Yi Hong, Hu Cui, Zhi-Chao Luo, Wen-Cheng Xu, Ai-Ping Luo
Summary: This study introduces an all few-mode fiber figure-eight laser STML by a nonlinear amplifying loop mirror at 1.0 μm, capable of generating single and multiple pulses at different central wavelengths. Various types of bound-state solitons were also achieved, contributing to a better understanding of the nonlinear characteristics of STML fiber lasers and their potential applications in optical communications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Alexey Andrianov, Maria P. Marisova, Elena A. Anashkina
Summary: In this study, experimental and theoretical investigations of thermo-optical effects in microspheres made of As2S3 chalcogenide glass fiber were presented. The results showed good agreement with the theoretically predicted dependences.
Article
Engineering, Electrical & Electronic
Yanyan Zhi, Hao Chen, Yuting He, Lanlan Wang, Jie Li, Hao Liang, Chuang Wu, Bai-Ou Guan
Summary: In this study, the sensitivity of a helical-core fiber was enhanced by tailoring the resonance wavelength using chemical etching. The measured sensitivities for mechanical torsion, temperature, strain, and external refractive index were significantly increased when the resonance was close to the dispersion turning point. The sensitivity magnitudes of torsion, temperature, and strain were enhanced by 7.93, 3.47, and 8.47 times, respectively, compared to the helical-core fiber without etching. This research provides a method for improving the sensing performance of optical devices.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Review
Engineering, Electrical & Electronic
A. K. Pathak, C. Viphavakit
Summary: This article reviews the recent progress in VOC monitoring using optical fiber-based sensors. Optical fiber sensors offer high sensitivity and wide application range, enabling real-time monitoring and detection of VOCs, which is crucial for maintaining a safe and healthy environment.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Electrical & Electronic
Defen Yu, Bin Zhao
Summary: In this paper, an all-fiber waveplate made of helically wound spun highly birefringent (SHB) optical fiber is proposed, and simulations and experiments demonstrate its excellent performance.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Yang Li, Bo Dong, Enqing Chen, Xiaoli Wang, Ziwan Li, Yudi Zhao, Wei Zhao, Yishan Wang
Summary: A broadband all-optical tunable fiber microcavity filter, based on graphene/epoxy composite, is presented. The microcavity shows excellent all-optical controlability and has a strong optical Kerr effect and photothermal effect induced by the optical pump. The experimental results demonstrate a wavelength tuning range of 25.54 nm and a tuning step of -832 pm/mW.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Yang Li, Bo Dong, Enqing Chen, Ziwan Li
Summary: An all-optical tunable fiber filter with dual graphene films was constructed using a fiber open microcavity. Experimental results showed that the filter had a large tunable wavelength range.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Biqiang Jiang, Yueguo Hou, Hongyang Wang, Xuetao Gan, Ailun Li, Zhen Hao, Kaiming Zhou, Lin Zhang, Jianlin Zhao
Summary: Integration of graphene with optical fibers enables fast response all-optical switching by modulating the transmission spectrum of a tilted fiber Bragg grating (TFBG) through pump power adjustment, promising a dynamic response of around 1 microsecond and an extinction ratio exceeding 13 dB. This compact device has the potential to be integrated into all-fiber systems to extend the functions of all-optical signal processing.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Sukhvinder Kaur, Subhajit Karmakar, Arun Jana, Shreeya Rane, Ravendra Kumar Varshney, Dibakar Roy Chowdhury
Summary: The control and manipulation of cavity resonances can be achieved through modifying the split ring resonator geometry in hybrid plasmonic metasurface, leading to the excitation of dual resonance peaks with high quality factor and multi-band resonances.
Article
Optics
Ying Guo, Huaiyin Su, Yundong Zhang, Kaiyue Qi, Fuxing Zhu, Changqiu Yu, Guo Yi
Summary: This study demonstrates the mechanical strain tuning of whispering gallery mode in a hollow-peanut-shaped optical microresonator, which shows improved strain response-ability compared to solid micro resonant. The characteristics and response of HPSOM were researched both theoretically and experimentally, with low Q-mode selected for strain measurement with highest sensitivity of 6.96 pm/?? in the range of 0-25 ??.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Zhenfeng Gong, Guojie Wu, Ke Chen, Min Guo, Junsheng Ma, Haie Li, Fengxiang Ma, Liang Mei, Wei Peng, Qingxu Yu
Summary: This paper presents a fiber-tip all-optical photoacoustic transducer with a special structure, small volume, and high sensitivity. The transducer is suitable for remote, long-distance, and limited-space trace gas detection.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Minwei Li, Yang Yu, Yang Lu, Xiaoyang Hu, Yaorong Wang, Shangpeng Qin, Junyang Lu, Junbo Yang, Zhenrong Zhang
Summary: An optical microfiber all-optical phase modulator (OMAOPM) based on the photo-induced thermal phase shift effect was proposed to meet the needs of phase generated carrier (PGC) demodulation technology for interferometric fiber optic hydrophones. The modulator was optimized to achieve a modulation amplitude of 1 rad, meeting the requirements of sensing applications. Experimental results demonstrated that the system successfully demodulated underwater acoustic signals below 1 kHz.
Review
Physics, Multidisciplinary
Thomas Godin, Lynn Sader, Anahita Khodadad Kashi, Pierre-Henry Hanzard, Ammar Hideur, David J. Moss, Roberto Morandotti, Goery Genty, John M. Dudley, Alessia Pasquazi, Michael Kues, Benjamin Wetzel
Summary: The need for measuring high repetition rate ultrafast processes is important in various scientific areas. Advances in techniques and breakthrough achievements in analyzing non-repetitive optical phenomena have been made in the past decade. Single-shot optical waveform characterization can be conveniently accessed using dispersive Fourier transform (DFT) and time-lens techniques, offering real-time ultrafast characterization in the spectral and temporal domains respectively. These complementary approaches have been successful in understanding optical phenomena, characterizing the complexity of laser evolution dynamics, and have applications in spectroscopy, velocimetry, ultrafast imaging, metrology, and quantum science. This review focuses on landmark results obtained using DFT-based technologies, including recent advances and key selected applications.
ADVANCES IN PHYSICS-X
(2022)
Article
Multidisciplinary Sciences
Maxwell Rowley, Pierre-Henry Hanzard, Antonio Cutrona, Hualong Bao, Sai T. Chu, Brent E. Little, Roberto Morandotti, David J. Moss, Gian-Luca Oppo, Juan Sebastian Totero Gongora, Marco Peccianti, Alessia Pasquazi
Summary: In open systems far from equilibrium, the states that emerge are determined by a few global parameters. Some of these states can resemble thermodynamic equilibrium, while others require external perturbations. Recent research has shown that the slow non-linearities of a free-running microresonator-filtered fibre laser can transform temporal cavity solitons into the dominant attractor of the system, leading to reliable self-starting oscillation.
Article
Physics, Multidisciplinary
Raphael Jauberteau, Sahar Wehbi, Tigran Mansuryan, Alessandro Tonello, Fabio Baronio, Katarzyna Krupa, Benjamin Wetzel, Stefan Wabnitz, Vincent Couderc
Summary: This work presents the experimental demonstration of the spontaneous generation of two-dimensional spatially localized beams in a quadratic nonlinear crystal. These beams are composed of twin components at different frequencies and emerge from a wide background beam. They disappear with the increasing intensity of the laser beam.
COMMUNICATIONS PHYSICS
(2022)
Article
Optics
Antonio Cutrona, Maxwell Rowley, Debayan Das, Luana Olivieri, Luke Peters, Sai T. Chu, Brent E. Little, Roberto Morandotti, David J. Moss, Juan Sebastian Totero Gongora, Marco Peccianti, Alessia Pasquazi
Summary: This study theoretically and experimentally investigates the soliton conversion efficiency between the narrowband input pulse and the two outputs of a four-port integrated microcavity. It is found that the single-soliton conversion efficiencies of the broadband comb outputs are high, with a total conversion efficiency of 72% in a specific micro-ring resonator case.
Article
Chemistry, Analytical
Taylor Shields, Adetunmise C. Dada, Lennart Hirsch, Seungjin Yoon, Jonathan M. R. Weaver, Daniele Faccio, Lucia Caspani, Marco Peccianti, Matteo Clerici
Summary: The THz electro-optical sampling technique using single-photon detectors and squeezed vacuum field as the optical probe has been successfully demonstrated in experiments. The sensitivity of the field measurement is limited by the statistical properties of the probe state, which can be improved by using phase-locked single-photon detectors.
Article
Physics, Applied
A. Cutrona, M. Rowley, A. Bendahmane, V. Cecconi, L. Peters, L. Olivieri, B. E. Little, S. T. Chu, S. Stivala, R. Morandotti, D. J. Moss, J. S. Totero Gongora, M. Peccianti, A. Pasquazi
Summary: A detailed study on the free-running stability properties of single solitons is presented, which are the most suitable states for developing robust ultrafast and high repetition rate comb sources. The carrier frequency and repetition rate can be controlled by modulating the laser pump current and the cavity length, providing a path for active locking and long-term stabilization.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Luke Peters, Juan Sebastian Totero Gongora, Vittorio Cecconi, Luana Olivieri, Jacob Tunesi, Alessia Pasquazi, Marco Peccianti
Summary: Efficiency in terahertz (THz) wave generation is a subject of intense research. Currently, generation via quadratic crystals is the most common method due to its simplicity and practicality. This study demonstrates a new approach, using quantum interference (QI) in noncentrosymmetric crystals in conjunction with phase-matched quadratic generation, to generate THz waves. This approach not only explores a new physical setting but also achieves higher conversion efficiencies and control over THz components. It has significant implications for spectroscopy and imaging applications.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Luana Olivieri, Luke Peters, Vittorio Cecconi, Antonio Cutrona, Maxwell Rowley, Juan Sebastian Totero Gongora, Alessia Pasquazi, Marco Peccianti
Summary: Terahertz time-domain imaging aims to reconstruct the full electromagnetic morphology of an object. This method enables three-dimensional microscopy by implementing field-sensitive microvolumetry using time-resolved nonlinear ghost imaging. The technique can separate and discriminate information from different depths and planes, making it suitable for objects with sparse micrometric details.