Results 11 to 20 of about 178,711 (264)

On-chip differential mode group delay manipulation based on 3D waveguides

Chip
Mode-division multiplexing based on few-mode optical fiber is a promising technology to increase the transmission capacity of optical communication systems, where multi-input multi-output (MIMO) digital signal processing (DSP) is employed to (de ...
Xiaofeng Liu, Quandong Huang, Jiaqi Ran, Jiali Zhang, Ou Xu, Di Peng, Yuwen Qin   +6 more
doaj   +2 more sources

Differential Group Delay of the Frequency Following Response Measured Vertically and Horizontally. [PDF]

J Assoc Res Otolaryngol, 2016
The frequency following response (FFR) arises from the sustained neural activity of a population of neurons that are phase locked to periodic acoustic stimuli. Determining the source of the FFR noninvasively may be useful for understanding the function of phase locking in the auditory pathway to the temporal envelope and fine structure of sounds.
King A, Hopkins K, Plack CJ.
europepmc   +5 more sources

Characterization of Microring Filters for Differential Group Delay Applications [PDF]

Journal of Lightwave Technology, 2017
This work has been founded by MINECO (Spanish Government), project numbers TEC2010-21303-C01, 02, 03 and 04, and JCyL Project No. VA089U16. F. J. F.-P. has also been partly supported by the ERDF and by the Galician Regional Government under project GRC2015/018 and under agreement for funding ...
Doménech, D., Chamorro Posada, P., Fraile Pelaez, F.J., Erro Betrán, María José, Tainta Ausejo, Santiago, Muriel, M. A., Baños, R., Bolten, J., Kleinjans, H.   +8 more
openaire   +3 more sources

Systems of advance-delay differential-difference equations and transformation groups

Electronic Journal of Differential Equations, 2016
A linear system of mixed-type differential difference equations is studied. A step derivation method and some conditions on an initial function are used to guarantee existence, uniqueness and smoothness of the solution.
Serguei I. Iakovlev, Valentina Iakovleva
doaj   +2 more sources

Design and Analysis of Z-Trench-Assisted 9-LP-Mode Fiber With Low Differential Modal Group Delay and High Spatial Density

IEEE Access, 2023
We present a novel Z-trench-assisted (Z-TA) graded index 9-LP-mode fiber that significantly suppresses the maximum absolute differential modal group delay (Max $\vert $ DMGD $\vert$ ) while obtaining a high normalized spatial density (NSD).
Yuheng Xie, Jianjun Tang, Qi Zhao, Lipeng Feng, Tianqi Dou   +4 more
doaj   +1 more source

Instantaneous Microwave Frequency Measurement Using Programmable Differential Group Delay (DGD) Modules

IEEE Photonics Journal, 2010
We propose and experimentally demonstrate a photonic approach for the measurement of microwave frequencies with adjustable measurement range and resolution.
Songnian Fu, Junqiang Zhou, Perry P. Shum, Kenneth Lee   +3 more
doaj   +1 more source

The Effect of BDS-3 Time Group Delay and Differential Code Bias Corrections on Positioning

Applied Sciences, 2020
The timing group delay parameter (TGD) or differential code bias parameter (DCB) is an important factor that affects the performance of GNSS basic services; therefore, TGD and DCB must be taken seriously.
Peipei Dai, Jianping Xing, Yulong Ge, Xuhai Yang, Weijin Qin, Yanchen Dong, Zhe Zhang   +6 more
doaj   +1 more source

مراقبة تشتت نمط الاستقطاب PMD من خلال قياس مطال النبضات الناتجة عن جمع مركبتي الاستقطاب المتعامدتين

مجلة جامعة دمشق للعلوم الهندسية, 2021
في هذا البحث تم اقتراح تقنية جديدة لمراقبة تشتت نمط الاستقطاب polarization mode dispersion (PMD) في شبكات الألياف الضوئية. تعتمد التقنية على تحويل مركبتي الاستقطاب المتعامدتين للإشارة الضوئية المراقبة إلى نفس حالة الاستقطاب ومن ثم يتم جمعهما معاً بفرق ...
د. حيدرا عبد الرحمن عبد الله
doaj  

Bending and twisting effects on multicore fiber differential group delay

Optics Express, 2019
In this paper we provide the theoretical and experimental evaluation of fiber bending and twisting effects on the group delay performance of a homogeneous 7-core fiber. We have experimentally evaluated the differential group delay between the central and outer cores for different curvature radii and twisting conditions, demonstrating that fiber ...
Sergi García, Mario Ureña, Ivana Gasulla   +2 more
openaire   +5 more sources

Topological Structure of the Solution Sets for Impulsive Fractional Neutral Differential Inclusions with Delay and Generated by a Non-Compact Demi Group

Fractal and Fractional, 2022
In this paper, we give an affirmative answer to a question about the sufficient conditions which ensure that the set of mild solutions for a fractional impulsive neutral differential inclusion with state-dependent delay, generated by a non-compact semi ...
Zainab Alsheekhhussain, Ahmed Gamal Ibrahim, Akbar Ali   +2 more
doaj   +1 more source