Article
Optics
Laura Mercade, Maria Morant, Amadeu Griol, Roberto Llorente, Alejandro Martinez
Summary: Optomechanical cavities facilitate the coupling of near-infrared light and GHz-frequency acoustic waves, enabling non-linear mixing and local oscillation functions in the optical domain. By utilizing a silicon OM crystal cavity, efficient frequency down- and up-conversion of MHz-bandwidth orthogonal frequency division multiplexed signals is achieved, paving the way for low-power all-photonic processing of digitally modulated microwave signals in miniaturized silicon photonics chips.
LASER & PHOTONICS REVIEWS
(2021)
Article
Engineering, Multidisciplinary
Shaymaa R. Tahhan, Arkadiy Mastin, Izaddeen Kabir Yakasai, Ahmad Atieh, Kawsar Ahmed, Francis M. Bui, Fahad Ahmed Al-Zahrani
Summary: This research proposes a photonic crystal fiber made of tellurite with unique optical guiding properties. Simulation results show that the fiber can achieve high nonlinearity and zero-dispersion at 1650 nm. It can generate a broad spectrum of supercontinuum and has potential applications in various fields.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Ying Huang, Hua Yang, Saili Zhao, Yucheng Mao, Shuyuan Chen
Summary: A photonic crystal fiber (PCF) with tailored dispersion characteristics was designed for supercontinuum (SC) generation, showing coherence in both normal and anomalous dispersion regions. The use of flat dispersion curves and time-domain compression resulted in wide, flat, and coherent SC with a wavelength range of 1281-2200 nm. This study provides insights for PCF design and opens up new possibilities for generating wide flat coherent spectra.
RESULTS IN PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Rakhi Bhattacharya, M. S. Mani Rajan, A. Sharafali, N. Ayyanar, Hassan Pakarzadeh
Summary: In this article, we experimentally measured the optical polarization and birefringence in a commercially available photonic crystal fiber (PCF) named ESM-12B. We applied a twist to the PCF using a mechanical rotator and observed that the polarization and birefringence can be controlled by adjusting the twist angle. Theoretical simulations were also conducted to optimize the twist angle and calculate the dispersion for different twist angles. The findings of this study suggest that PCF ESM-12B can be used as a polarization rotator and optical sensor.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
Zhanqiang Hui, Lu Chen, Deng Pan, Shixiu Wei, Xiangmei Zeng
Summary: A chalcogenide photonic crystal fiber with flattened dispersion and high nonlinearity in mid-infrared region is proposed, showing excellent performance in numerical simulations for all-optical wavelength conversion. It has potential applications in future space optical communication networks and mid-IR photonics.
Article
Optics
Qian Yu, Chuan Xu, Sixin Chen, Pengcheng Chen, Saiwei Nie, Shijie Ke, Dunzhao Wei, Min Xiao, Yong Zhang
Summary: We propose and theoretically investigate the correlation between two-photon orbital angular momentum (OAM) through spontaneous parameter down-conversion (SPDC) processes in three-dimensional (3D) spiral nonlinear photonic crystals (NPCs). By designing the NPC structure properly, the OAM-correlated photon pair can be feasibly modulated, providing a potential platform for high-dimensional entanglement in quantum information processing and quantum communications.
Article
Engineering, Electrical & Electronic
Yazhou Wang, Fei Yu, Lili Hu
Summary: In this paper, a computer-aided inverse fiber design method based on empirical dispersion formula is proposed for EGI-PCF, utilizing a differential evolution genetic algorithm for optimization. The use of empirical formulas instead of numerical simulations greatly reduces run-time and simplifies fitness function evaluation. This approach allows for the design of EGI-PCF with specific dispersion profiles, achieving a significant improvement in efficiency compared to previous attempts.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
D. Martinez-Munoz, A. Ortiz-Mora, A. Dengra, A. Sarsa-Rubio, A. Diaz-Soriano
Summary: This paper proposes a new Sierpinski fractal pattern implementation as a tool to fine-tune the properties of Microstructured Optical Fibers (MOFs). It has been applied to an existing hexagonal-MOF photonic crystal fiber (PCF) with solid core to decrease its chromatic dispersion, nonlinear and loss properties, demonstrating the flexibility of these fiber designing techniques. Additionally, a study modeling possible fluctuations in properties design due to geometrical perturbations during the manufacturing process is included.
Article
Optics
S. Upendar, R. F. Ando, M. A. Schmidt, T. Weiss
Summary: By varying the radius of the corner strands in the core surround of photonic bandgap fibers, significant reduction in loss can be achieved. Optimal corner strand radius can reduce the loss of the core mode in a specific wavelength range by almost two orders of magnitude, with losses in the second bandgap even lower than the first. Our approach is applicable to various types of photonic bandgap fibers and enables low-loss light guidance with reduced fabrication complexity.
Article
Nanoscience & Nanotechnology
Shuyang Xie, Jingmin Zhou, Chen Nie, Piaorong Xu, Yuanyuan Liu, Lin Li, Jun Yi, Exian Liu
Summary: This paper proposes a high nonlinear ZBLAN-based photonic crystal fiber with ultra-high birefringence and flattened dispersion in the short-wavelength infrared region. By arranging elliptical-hole arrays around the fiber core, the x-polarized and y-polarized fundamental modes can be separated. The design exhibits single-mode propagation, short beat length, high nonlinear coefficient, low confinement loss, and flattened dispersion. The study of the structure parameters shows that this fiber has great potential for nonlinear applications in the infrared region.
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Hieu Van Le, Van Thuy Hoang, Hue Thi Nguyen, Van Cao Long, Ryszard Buczynski, Rafal Kasztelanic
Summary: This study presents a photonic crystal fiber with a fused silica glass core infiltrated with tetrachloroethylene (C2Cl4) as a new source of supercontinuum (SC) spectrum. By optimizing the structural geometries of different C2Cl4-core fibers, all-normal, anomalous, and dual zero dispersion wavelength characteristics were achieved to support broadband SC generation. These fibers show potential as cost-effective alternatives to traditional glass core fibers for all-fiber SC sources.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Vitor Ribeiro, Minji Shi, Auro M. Perego
Summary: In this study, we investigated the impact of ZDW fluctuations in coupled dual-core fiber optical parametric amplifiers, and compared it to single-core single-pump FOPA. We developed a Monte Carlo model and an analytical model to simulate and validate the results, and found that coupled dual-core FOPA can significantly reduce the impact of ZDW fluctuations compared to single-core ones.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Crystallography
Wei Liu, Laisheng Zhang, Fan Zhang
Summary: A small-sized multi-wavelength and multi-channel filter has been designed using a two-dimensional quadric lattice photonic crystal structure, solving the problems of structure complexity, single-wavelength download, and channel interference.
Article
Optics
Khosro Heydarian, Arez Nosratpour, Mohammad Razaghi
Summary: In this paper, a numerical study of wavelength conversion based on cross-gain modulation (XGM) using a photonic crystal semiconductor optical amplifier (PC-SOA) was conducted for the first time. The results showed that the PC-SOA exhibited better performance in wavelength conversion compared to the conventional bulk SOA and provided a more suitable alternative for all-optical integrated circuits.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Z. Du, J. He, F. Wei, Y. Li, H. Liu, Y. Lu
Summary: This paper presents a photonic crystal fiber with circular and elliptical air holes, which exhibits high nonlinearity and birefringence. Simulation results show that the fiber has significant birefringence, nonlinear coefficient, and two zero-dispersion wavelengths at a specific wavelength.
INDIAN JOURNAL OF PHYSICS
(2023)
Article
Optics
G. Demetriou, F. Biancalana, E. Abraham, W. Ji, Y. Wang, A. K. Kar
Summary: The study investigates the nonlinear optical properties of single layer graphene using Z-scan, revealing both a transmittance increase due to saturable absorption and a nonlinear phase-shift due to nonlinear refraction under laser illumination. Nonlinear refraction measurements show an expected irradiance-dependent nonlinear refraction, with an effective nonlinear refractive index coefficient used to describe this phenomenon and differentiate it from conventional n(2) coefficients.
OPTICS COMMUNICATIONS
(2021)
Article
Astronomy & Astrophysics
Christy Kelly, Carlo Trugenberger, Fabio Biancalana
Summary: Through numerical analysis and proofs, we studied a statistical model describing random 3-regular graphs and found the one-dimensional geometric form of the model. By analyzing finite size effects, we provided strong evidence for the existence of a second-order phase transition.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Multidisciplinary Sciences
Shangran Xie, Abhinav Sharma, Maria Romodina, Nicolas Y. Joly, Philip St J. Russell
Summary: Through manipulation of rotational degrees of freedom, we achieved all-optical control of the spin, precession, and nutation of vaterite microparticles, with implications for the control of micromotors and microgyroscopes, laser alignment of polyatomic molecules, and the study of rotational cell mechanics.
Article
Optics
Vanessa Wachter, Victor A. S. V. Bittencourt, Shangran Xie, Sanchar Sharma, Nicolas Joly, Philip St J. Russell, Florian Marquardt, Silvia Viola Kusminskiy
Summary: A platform combining cavity optomagnonics and levitated optomechanics is proposed to control and probe the coupled spin-mechanics of magnetic dielectric particles. The dynamics of a levitated Faraday-active dielectric microsphere driven by an external laser in an external magnetic field is theoretically studied. The magnetization and angular motion dynamics can be probed via the power spectrum of the outgoing light, revealing characteristic frequencies attributed to the angular oscillations and spin dynamics.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Optics
Y. Chen, J. Hammer, N. Y. Joly, P. St J. Russell
Summary: The study presents a design for efficiently generating entangled photon triplets by adjusting gas pressure, axial strain, and mechanical twist. The nanostrand of glass with two hollow channels enhances the nonlinear overlap between the fundamental and third harmonic modal fields.
Article
Optics
Maria N. Romodina, Shangran Xie, Francesco Tani, Philip St J. Russell
Summary: The research on accelerating dielectric microparticles in a photonic crystal fiber with femtosecond pulses shows that, under the influence of material ablation-induced plasma and jet, the particles can be propelled with high acceleration. This effect enables the creation of optical devices at specific locations inside hollow-core photonic crystal fibers.
Article
Optics
Xinglin Zeng, Wenbin He, Michael H. Frosz, Andreas Geilen, Paul Roth, Gordon K. L. Wong, Philip St J. Russell, Birgit Stiller
Summary: This study reports the experimental investigation of stimulated Brillouin scattering (SBS) in chiral photonic crystal fiber (PCF). The chiral PCF exhibits optical activity and robustly maintains circular polarization states, providing potential for the development of a new generation of stable circularly polarized SBS systems.
PHOTONICS RESEARCH
(2022)
Article
Multidisciplinary Sciences
R. Tyumenev, J. Hammer, N. Y. Joly, P. St J. Russell, D. Novoa
Summary: Preservation of photon statistics is crucial for the implementation of quantum networks. Current methods have limited tunability and suffer from insertion loss and Raman noise. This study introduces a method using hydrogen-filled antiresonant-reflecting photonic crystal fibers for quantum-correlation-preserving frequency conversion.
Correction
Optics
P. Roth, Y. Chen, M. C. Gunendi, R. Beravat, N. N. Edavalath, M. H. Frosz, G. Ahmed, G. K. L. Wong, P. St. J. Russell
Summary: Recent work has identified an error in the dispersion relation of helical Bloch modes in a ring of capillaries. The error has been corrected, and a revised version of Fig. 2 is provided.
Article
Optics
Jie Luan, Philip St. J. Russell, David Novoa
Summary: We successfully achieved self-compression of near-UV pulses using numerical modeling of nonlinear pulse dynamics in the fiber. The experimental results demonstrate the significance of this technique for time-resolved studies in spectroscopy, chemistry, and materials science.
PHOTONICS RESEARCH
(2022)
Article
Multidisciplinary Sciences
Xinglin Zeng, Philip St J. Russell, Christian Wolff, Michael H. Frosz, Gordon K. L. Wong, Birgit Stiller
Summary: This study reports a light-driven nonreciprocal isolation system for optical vortex modes based on topology-selective stimulated Brillouin scattering (SBS) in chiral photonic crystal fiber. The experimental results show a vortex isolation of 22 decibels (dB), which is at the state of the art in fundamental mode isolators using SBS. This device may find applications in optical communications, fiber lasers, quantum information processing, and optical tweezers.
Article
Optics
Philip St. J. Russell, Yang Chen
Summary: This paper investigates the localization of light in disordered or periodically structured dielectric media, with a focus on coreless photonic crystal fiber (PCF) drawn in a chiral form. A novel analytical model for twisted coreless PCF is presented, which offers excellent agreement with numerical solutions of Maxwell's equations and significantly reduces computational time. The study reveals the existence of exponentially localized helical Bloch modes (HBMs) in chiral coupled sub-core lattices, opening up new possibilities for 2D localization of light.
LASER & PHOTONICS REVIEWS
(2023)
Article
Physics, Applied
Francesco Tani, Jacob Lampen, Martin Butryn, Michael H. Frosz, Jie Jiang, Martin E. Fermann, Philip St. J. Russell
Summary: We integrate soliton dynamics in gas-filled hollow-core photonic crystal fibers with a cutting-edge fiber laser to create a turnkey system that can generate few-femtosecond pulses at an 8-MHz repetition rate, even at low pump energies. By utilizing soliton self-frequency shift in a second hydrogen-filled hollow-core fiber, we are able to efficiently produce pulses as short as 22 fs, continuously tunable from 1100 to 1474 nm.
PHYSICAL REVIEW APPLIED
(2022)
Article
Physics, Multidisciplinary
L. Genovese, M. Kellermeier, F. Mayet, K. Floettmann, G. K. L. Wong, M. H. Frosz, R. Assmann, P. St. J. Russell, F. Lemery
Summary: Emerging accelerator concepts are using high-frequency electromagnetic radiation to manipulate electron beams, which supports a variety of advanced applications. In this study, we propose a scheme using laser-driven large-core antiresonant optical fibers to manipulate the electron beams. We explore two general cases using different modes and demonstrate the potential for large energy modulations and the production of attosecond microbunches. These findings have wide applicability in high-charge pump-probe experiments, metrology, and accelerator science.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Astronomy & Astrophysics
Christy Kelly, Fabio Biancalana, Carlo Trugenberger
Summary: In this paper, we present a new regularization method for Euclidean Einstein gravity using (sequences of) graphs. We define a discrete Einstein-Hilbert action that converges to its manifold counterpart on sufficiently dense random geometric graphs (or any sequence of graphs that converges to the manifold in the sense of Gromov-Hausdorff). Our approach relies on the Ollivier curvature of optimal transport theory and allows us to define a similar discrete action for Klein-Gordon fields.
