Article
Optics
Bartosz Janaszek, Anna Tyszka-Zawadzka, Pawel Szczepanski
Summary: In this work, we explore the possibilities of manipulating photonic density of states (PDOS) in photonic hypercrystals (PHCs). Our analysis demonstrates the ability to achieve photonic bandgap for specific polarization of light and significant enhancement in broadband PDOS. We also introduce the concept of anomalous dispersion arising from effective resonance of the hyperbolic medium in the PHC structure, which can result in negative PDOS, similar to the mobility gap observed in electronic crystals. Furthermore, we show that employing PHC structures instead of standalone hyperbolic media enables more versatile electromagnetic responses, such as broadband perfect absorption with adjustable spectral range of operation.
Article
Optics
Feng Wu, Yuchun She, Zhaoming Cheng, Shi Hu, Guanghui Liu, Shuyuan Xiao
Summary: This study introduces an all-dielectric elliptical metamaterial (EMM) defect into a 1-D photonic crystal (PhC) to achieve a polarization-sensitive Fabry-Perot resonance. The resonance wavelength difference enables high-performance polarization selectivity within a wide angle range.
Article
Physics, Multidisciplinary
Bhuvneshwer Suthar, Narendra Kumar, Sofyan A. Taya
Summary: This article analyzes the multichannel transmission behavior of a 1D binary photonic crystal composed of silver/silicon. The study shows that the photonic crystal exhibits better response to multichannel transmission in TE mode compared to TM mode, with sharper characteristics. The shifting of transmission peaks differs when changing the thickness of different layers, and equally spaced peaks for fixed parameters demonstrate multichannel filtering characteristics. Additionally, the photonic crystal demonstrates better multichannel transmission behavior at low plasma frequency with less broadening. The insights from this study offer novel ideas for designing optical devices.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Engineering, Electrical & Electronic
Sofyan A. Taya, Nael Doghmosh, Anurag Upadhyay
Summary: This study investigates the transmission spectra characteristics of a binary PC structure consisting of silica and silver under different conditions, by introducing irregularities into the photonic crystal. The results show that increasing the thickness of the silver layer widens the band gaps, while increasing the angle of incidence causes a blue shift in the band gaps.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Instruments & Instrumentation
Shuai Gu, Zhenggang Lian, Qianqing Yu, Jianghe Xu, Bingsen Huang, Xin Wang, Xinzhi Sheng, Shuqin Lou
Summary: This paper investigates the radiation-induced attenuation (RIA) in Hollow-Core Photonic Band-Gap Fiber (HCPBGF) and commercial Panda Polarization Maintaining Fiber (PPMF) in a gamma-rays environment. Experimental results show that the homemade HC-PBGF has significantly lower RIA compared to PPMF. Theoretical analysis confirms that HC-PBGF has lower initial defect concentration and RIA increase rate than PPMF. These findings are of great significance for the promotion of fiber optic gyroscopes in space applications.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Saeideh Kevin, Mostafa Sahrai, Seyyed Hossein Asadpour
Summary: The Hartman effect in a one dimensional photonic crystal doped with graphene quantum dots is studied. It is found that the Hartman effect can be switched from negative to positive by increasing the Rabi-frequency of the controlling field and manipulating the relative phase of the applied fields. The influence of the vortex beam on the Hartman effect is also discussed, showing that the orbital angular momentum (OAM) and azimuthal phase of the vortex beam do not affect the transmission of the probe field but change the Hartman effect from positive to negative.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
V. Sepahvandi, B. Rezaei, A. H. Aly
Summary: This paper proposes a multichannel terahertz optical filter based on a one-dimensional photonic crystal with a third-order Fibonacci structure, including a bulk Dirac semimetal. The tuning of the optical properties of the proposed structure has been theoretically studied as a function of the Dirac semimetals' Fermi energy. Furthermore, the effects of the Fibonacci structure's periodic number and light's incident angle on optical channels were investigated. The results reveal that changes in the Fermi energy and incident angle remarkably affect the frequency and transmission of the optical channels. Additionally, the number of optical channels increases by increasing the periodic number of the Fibonacci structure.
SCIENTIFIC REPORTS
(2023)
Article
Optics
Qian Wei, Jiaju Wu, Zhiwei Guo, Yong Sun, Yunhui LI, Haitao Jiang, Yapin Yang, Hong Chen
Summary: Introducing a chiral hyperbolic metamaterial layer as a defect in one-dimensional photonic crystals enables the realization of omnidirectional defect modes for TM polarized waves. This structure allows for the maintenance of a fixed total phase at a certain wavelength over a wide range of incident angles, enabling omnidirectional transmission and expanding the design possibilities for optical filters and polarization selectors.
Article
Optics
Qian Wei, Jiaju Wu, Zhiwei Guo, Yong Sun, Yunhui Li, Haitao Jiang, Yaping Yang, Hong Chen
Summary: Introduced a method to achieve omnidirectional defect mode for TM polarized waves in one-dimensional photonic crystals (1DPCs) by introducing a hyperbolic metamaterial (HMM) layer as a defect in the near-infrared regime. This structure can be widely applied in the design of omnidirectional optical filters and wide-angle polarization selectors.
Article
Physics, Applied
Zebih Cetin, Yigit Tuncturk, H. Sami Sozuer
Summary: This work studied the transmission properties of a photonic crystal-like structure that can be woven into fabrics. It explored the potential energy savings through suppression of radiation and offered innovative approaches to optimize energy consumption and enhance heat regulation.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Multidisciplinary Sciences
Aiqiang Pan, Kaixin Lin, Siru Chen, Chi Yan Tso
Summary: This study mathematically proved that reciprocal optical devices can only exhibit asymmetric transmittivity (AT) under specific incident modes, and cannot guarantee AT with arbitrary incident light modes. Only nonreciprocal optical devices have the potential to ensure AT. The study also discussed the thermodynamics of both reciprocal and nonreciprocal optical devices, confirming the validity of the second law of thermodynamics. Additionally, a comparison was made between diode-like behaviors of optical and electronic devices, highlighting the difference in their ability to guarantee AT.
Article
Optics
Xi Wang, Weihong Shen, Wenxiang Li, Yingjie Liu, Yong Yao, Jiangbing Du, Qinghai Song, Ke Xu
Summary: Recently, there has been increasing interest in the 2-mu m wave band for optical communication, but the development is hindered by modulation speed constraints. To address this issue, researchers have demonstrated a high-speed silicon Mach-Zehnder modulator capable of achieving a modulation speed of 80 Gbit/s.
PHOTONICS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Linlin Zhang, Yichao Meng
Summary: The newly designed circular photonic crystal fiber can support stable transmission of 30 orbital angular momentum modes with good features such as low dispersion variations, confinement losses, and nonlinear coefficients, as well as high mode purity. Additionally, the fiber shows good tolerance to elliptical deformation.
OPTICAL FIBER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Dunke Lu, Xiaohui Fang, Xiaohang Li, Zhiwei Li
Summary: The proposed novel design of photonic crystal fiber achieves single-polarization single-mode transmission by using uniformly sized circular air holes and full-vector finite element method, with the possibility to broaden the SPSM band by increasing the hole-to-pitch ratio. The design also exhibits low confinement loss, high nonlinear coefficient, and excellent bending resistance.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Jiangbing Du, Weihong Shen, Jiacheng Liu, Yufeng Chen, Xinyi Chen, Zuyuan He
Summary: This tutorial discusses the use of FMF for MDM to overcome the capacity bottleneck of optical communications, highlighting the importance and prospects of MDM in photonic integration and optical fiber transmission. It also addresses the research and application challenges of MDM in long-haul transmission and short reach interconnection.
CHINESE OPTICS LETTERS
(2021)
