Results 71 to 80 of about 3,997,912 (199)

Numerical solution of single mode gyrotron equation

Mathematical Modelling and Analysis, 2004
In this paper we study numerical problems arising in solving the single mode gyrotron equation. Using the method of finite differences analytical and numerical solutions are obtained.
O. Dumbrajs, H. Kalis, A. Reinfelds
doaj   +1 more source

Efficient Photon Coupling from a Diamond Nitrogen Vacancy Centre by Integration with Silica Fibre

, 2015
A central goal in quantum information science is to efficiently interface photons with single optical modes for quantum networking and distributed quantum computing. Here, we introduce and experimentally demonstrate a compact and efficient method for the
Chen, Edward H., Englund, Dirk R., Li, Luozhou, Mouradian, Sara L., Patel, Rishi N., Schröder, Tim, Wan, Noel   +6 more
core   +1 more source

Numerical experiments with single mode gyrotron equations

Mathematical Modelling and Analysis, 2012
Gyrotrons are microwave sources whose operation is based on the stimulated cyclotron radiation of electrons oscillating in a static magnetic field. This process is described by the system of two complex differential equations: nonlinear first order ...
Andrejs Reinfelds, Olgerts Dumbrajs, Harijs Kalis, Janis Cepitis, Dana Constantinescu   +4 more
doaj   +1 more source

Design of Single Mode Fiber for Optical Communications

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2020
In this work, a step-index fiber with core index  and cladding index  has been designed. Single-mode operation can be obtained by using a fiber with core diameters 4–13 µm operating at a wavelength of 1.31 µm and by 4–15 µm at 1.55 µm.
Aqeel R. Salih
doaj   +1 more source

Improved Numerical Calculation of the Single-Mode-No-Core-Single-Mode Fiber Structure Using the Fields Far from Cutoff Approximation

Sensors, 2017
Multimode interferometers based on the single-mode-no-core-single-mode fiber (SNCS) structure have been widely investigated as functional devices and sensors.
Wei Xu, Jia Shi, Xianchao Yang, Degang Xu, Feng Rong, Junfa Zhao, Jianquan Yao   +6 more
doaj   +1 more source

Intensity Demodulated Refractive Index Sensor Based on Front-Tapered Single-Mode-Multimode-Single-Mode Fiber Structure

Sensors, 2018
A novel intensity demodulated refractive index (RI) sensor is theoretically and experimentally demonstrated based on the front-tapered single-mode-multimode-single-mode (FT-SMS) fiber structure.
Jing Kang, Jiuru Yang, Xudong Zhang, Chunyu Liu, Lu Wang   +4 more
doaj   +1 more source

Single-Mode-Multimode-Single-Mode Fiber (SMS): Exploring Environmental Sensing Capabilities

IEEE Sensors Letters
In this paper, we study the environmental sensing capabilities of a Single-Mode-Multimode-Single-Mode (SMS) fiber in a simple low-cost configuration. SMS fibers exhibit sensitivity to temperature, humidity, refractive index and strain, making them suitable for numerous applications in telecommunications, environmental monitoring, and more. Experimental
Silvia Diaz, Miguel Ángel Armendáriz, Ignacio R. Matías   +2 more
openaire   +2 more sources

Comment on "Single-mode excited entangled coherent states"

, 2009
In Xu and Kuang (\textit{J. Phys. A: Math. Gen.} 39 (2006) L191), the authors claim that, for single-mode excited entangled coherent states $| \Psi_{\pm}(\alpha,m)>$, \textquotedblleft the photon excitations lead to the decrease of the concurrence in the
Hong-chun Yuan, Hu L Y, Hu L Y, Li-yun Hu, Wang X G, Wünsche A, Xu L   +6 more
core   +1 more source

Mode Suppression in Injection Locked Multi-Mode and Single-Mode Lasers for Optical Demultiplexing

Photonics, 2019
Optical injection locking has been demonstrated as an effective filter for optical communications. These optical filters have advantages over conventional passive filters, as they can be used on active material, allowing them to be monolithically ...
Kevin Shortiss, Maryam Shayesteh, William Cotter, Alison H. Perrott, Mohamad Dernaika, Frank H. Peters   +5 more
doaj   +1 more source

Generating single-mode behavior in fiber-coupled optical cavities

, 2010
We propose to turn two resonant distant cavities effectively into one by coupling them via an optical fiber which is coated with two-level atoms [Franson et al., Phys. Rev. A 70, 062302 (2004)].
Almut Beige, H. Carmichael, Jonathan Busch, W. Vogel   +3 more
core   +1 more source