Results 1 to 10 of about 312,646 (117)

Study of Coupling Length of Concentrically Curved Waveguides

IEEE Photonics Journal, 2012
In this paper, we propose a method based on Helmholtz equation to determine the coupling length of the light propagating in concentrically curved waveguides by the conformal transformation.
Dong-Po Cai, Chii-Chang Chen, Chien-Chieh Lee, Tsong-Dong Wang   +3 more
doaj   +3 more sources

Experimental Demonstration of Geometric Tilt-to-Length Noise Model in Test Mass Interferometer [PDF]

Sensors
Space-based gravitational wave detection missions impose extremely stringent requirements on the measurement precision of the laser interferometer, where tilt-to-length coupling noise emerges as a critical factor degrading performance. This paper focuses
Mengyang Zhao, Jia Shen, Shaoxin Wang, Keqi Qi, Heshan Liu, Peng Xu, Ruihong Gao, Ziren Luo   +7 more
doaj   +2 more sources

Optimization of Train Operation Planning with Full-Length and Short-Turn Routes of Virtual Coupling Trains

Applied Sciences, 2022
Virtual coupling uses wireless communication instead of mechanical coupling to ensure that trains are easily reconnected or disconnected. This technology can shorten the interval time between trains, give full play to the carrying capacity of lines, and ...
Xu Zhou, Fang Lu, Liyu Wang
doaj   +3 more sources

Characteristics and mechanism of coupling effects in parallel-cladded acoustic waveguides

Acta Acustica, 2022
The characteristics and mechanism of coupling effects between parallel cladded acoustic waveguides (PCAWs) are essential when considering their applications in acoustic wave control and signal processing.
Yin Guanjun, Li Pan, Yang Xuebing, Tian Ye, Han Jing, Ren Wei, Guo Jianzhong   +6 more
doaj   +1 more source

Calculation of the Coupling Coefficient in Step-Index Multimode Polymer Optical Fibers Based on the Far-Field Measurements

Frontiers in Physics, 2022
Using the power flow equation (PFE), this article investigates mode coupling in step-index (SI) multimode (MM) polymer optical fiber (POF). This equation’s coupling coefficient was initially fine-tuned so that it could appropriately reconstruct ...
Svetislav Savović, Svetislav Savović, Alexandar Djordjevich, Branko Drljača, Ana Simović, Rui Min   +5 more
doaj   +1 more source

Mode Coupling Analysis for a Mode Selective Coupler Using the Supermode Theory

Photonics, 2022
In this paper, the mode selective coupler (MSC) is analyzed using the supermode theory. It is shown that all characteristic parameters of the MSC can be obtained using the propagation constants of the supermodes supported by the MSC structure. Simulation
Wenhua Ren, Fan Wang, Guobin Ren
doaj   +1 more source

Two-wavelength WDM multiplexers based on combined fiber structures

Российский технологический журнал, 2021
One of the main directions in the development of optical communication systems is associated with the use of optical fiber (ОF) for data reception and transmission.
D. A. Ivanov, V. I. Nefedov
doaj   +1 more source

An Optical Measuring Transducer for a Micro-Opto-Electro-Mechanical Micro-g Accelerometer Based on the Optical Tunneling Effect

Micromachines, 2023
Micro-opto-electro-mechanical (MOEM) accelerometers that can measure small accelerations are attracting growing attention thanks to their considerable advantages—such as high sensitivity and immunity to electromagnetic noise—over their rivals.
Evgenii Barbin, Tamara Nesterenko, Aleksei Koleda, Evgeniy Shesterikov, Ivan Kulinich, Andrey Kokolov   +5 more
doaj   +1 more source

Influence of launch beam distribution on power flow and angular division multiplexing in seven-core silica optical fibers

Frontiers in Physics, 2022
We analyze the effect of launch beam distribution on space-division multiplexing (SDM) performance in multimode multicore silica optical fibers (MM MC SOF) with seven cores.
Svetislav Savović, Svetislav Savović, Wenjing Dai, Alexandar Djordjevich, Konstantinos Aidinis, Zheng Li, Rui Min   +6 more
doaj   +1 more source

The molecular basis of coupling between poly(A)-tail length and translational efficiency

eLife, 2021
In animal oocytes and early embryos, mRNA poly(A)-tail length strongly influences translational efficiency (TE), but later in development this coupling between tail length and TE disappears.
Kehui Xiang, David P Bartel
doaj   +1 more source