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The solution of polarized radiative transfer equation with angle-dependent (AD) partial frequency redistribution (PRD) is a challenging problem. Modeling the observed, linearly polarized strong resonance lines in the solar spectrum often…

太阳与恒星天体物理 · 物理学 2013-08-16 L. S. Anusha , K. N. Nagendra

Since specular reflection often exists in the real captured images and causes deviation between the recorded color and intrinsic color, specular reflection separation can bring advantages to multiple applications that require consistent…

计算机视觉与模式识别 · 计算机科学 2022-01-26 Sijia Wen , Yingqiang Zheng , Feng Lu

The state of polarization and the carrier phase drift dynamically during transmission in a random fashion in coherent optical fiber communications. The typical digital signal processing solution to mitigate these impairments consists of two…

信息论 · 计算机科学 2024-01-25 Cristian B. Czegledi , Erik Agrell , Magnus Karlsson , Pontus Johannisson

Polarization-division multiplexed (PDM) transmission based on the nonlinear Fourier transform (NFT) is proposed for optical fiber communication. The NFT algorithms are generalized from the scalar nonlinear Schr\"odinger equation for one…

信息论 · 计算机科学 2017-11-22 Jan-Willem Goossens , Mansoor I. Yousefi , Yves Jaouën , Hartmut Hafermann

We address the issue of dephasing effects in flying polarization qubits propagating through optical fiber by using the method of dynamical decoupling. The control pulses are implemented with half waveplates suitably placed along the…

量子物理 · 物理学 2013-11-18 Bhaskar Roy Bardhan , Katherine L. Brown , Jonathan P. Dowling

In the past few years, there is a renewed interest in using multimode fibers for a wide range of technologies such as communication, imaging and spectroscopy. Practical implementations of multimode fiber in such applications, however, are…

光学 · 物理学 2023-03-24 Zohar Finkelstein , Kfir Sulimany , Shachar Resisi , Yaron Bromberg

Microstructured optical fibers (MOFs) are one of the most exciting recent developments in fiber optics. A MOF usually consists of a hexagonal arrangement of air holes running down the length of a silica fiber surrounding a central core of…

其他计算机科学 · 计算机科学 2012-05-31 Mohammed Debbal , Mohamed Chikh-Bled

Multimode fibres offer the advantages of high resolution and miniaturization over single mode fibers in the field of optical imaging. However, multimode fibre's imaging is susceptible to perturbations of MMF that can lead to secondary…

One of the greatest challenges in utilizing multimode optical fibers is mode-mixing and inter-modal interference, which scramble the information delivered by the fiber. A common approach for canceling these effects is to tailor the optical…

光学 · 物理学 2020-04-29 Shachar Resisi , Yehonatan Viernik , Sebastien Popoff , Yaron Bromberg

High-performance optical beam splitters are of fundamental importance for the development of advanced silicon photonics integrated circuits. However, due to the high refractive index contrast of the silicon-on-insulator platform, state of…

A new kind of dual-band reflection-mode circular polarizers (RMCPs) is introduced with wide bandwidth and wide-view at the operating frequencies. The proposed RMCPs are based on dual-layer rectangular patches on both sides of a substrate,…

经典物理 · 物理学 2018-05-16 Mahdi Fartookzadeh , Seyed Hossein Mohseni Armaki

Multimode optical fibers support the dense, low-loss transmission of many spatial modes, making them attractive for technologies such as communications and imaging. However, information propagating through multimode fibers is scrambled, due…

Extremely large-scale multiple-input multiple-output (XL-MIMO) is expected to be an important technology in future sixth generation (6G) networks. Compared with conventional single-polarized XL-MIMO, where signals are transmitted and…

信息论 · 计算机科学 2025-02-21 Shuhao Zeng , Boya Di , Hongliang Zhang , Zhu Han , H. Vincent Poor

Multi-mode fiber (MMF) endoscopes are a new type of endoscope that use only a single optical fiber to transmit images, achieving much higher spatial resolution for a given diameter than commercial fiber bundle endoscopes. However, a…

光学 · 物理学 2018-05-22 Ruo Yu Gu , Elaine Chou , Cory Rewcastle , Ofer Levi , Joseph M. Kahn

A natural choice for quantum communication is to use the relative phase between two paths of a single-photon for information encoding. This method was nevertheless quickly identified as impractical over long distances and thus a…

量子物理 · 物理学 2021-10-06 A. Alarcón , J. Argillander , G. Lima , G. B. Xavier

A broadband silicon polarization beam splitter (PBS) is proposed and experimentally demonstrated based on Floquet-engineered directional couplers. The total length of the coupling structure is 20 um . By periodically modulating the…

光学 · 物理学 2026-02-05 Ning Ma , Yu Chen , Yunjie Li , Shubin Huang , Wen-di Li , Minghua Chen , Ciyuan Qiu

We present a new method for high precision measurements of polarization rotation in the frequency range from 0.2 to 2.2 THz using a fiber coupled time-domain THz spectrometer. A free standing wire-grid polarizer splits THz light into…

光学 · 物理学 2023-12-21 Zhenisbek Tagay , Ralph Romero , N. P. Armitage

In this work, we study the propagation of solitons in lossy optical fibers. The main objective of this work is to study the loss of energy of the soliton wave during propagation and then to evaluate the impact of this loss on the…

We consider application of the discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-spread OFDM) technique to high-speed fiber optic communications. The DFT-spread OFDM is a form of single-carrier technique that…

信息论 · 计算机科学 2011-03-01 Fanggang Wang , Xiaodong Wang

We study the stability and the dynamics of many-soliton molecules in dispersion-managed (DM) optical fibers with focus on five-and seven-soliton molecules by analytical and numerical means. In particular we calculate the binding force,…

斑图形成与孤子 · 物理学 2017-11-22 Abdelaali Boudjemaa