Results 1 to 10 of about 178,562 (120)

Application of Crossed Polarizer Method in the Measurement of Differential Group Delay of Optical Fibers

open access: yesPhotonics, 2023
In this paper, we report the use of crossed polarizer technique to measure the differential group delay (DGD) of few-mode optical fiber (FMF). The windowed Fourier transform (WFT) is applied in the analysis of beat length measurement in the spectral ...
Cheng Wu   +7 more
doaj   +1 more source

Supermode Characteristics of Nested Multiple Hollow-Core Anti-Resonant Fibers

open access: yesPhotonics, 2022
Mode-division multiplexing (MDM) can achieve ultra-high data capacity in optical fiber communication. Several impressive works on multicore fiber (MCF), multi-mode fiber, and few-mode multicore fiber have made significant achievements in MDM.
Zequan Li   +4 more
doaj   +1 more source

Optical Solitons for the Concatenation Model with Differential Group Delay: Undetermined Coefficients

open access: yesMathematics, 2023
In the current study, the concatenation model of birefringent fibers is explored for the first time, and we present optical soliton solutions to the model.
Anjan Biswas   +5 more
doaj   +1 more source

Minimized Group Delay FIR Low Pass Filter Design Using Modified Differential Search Algorithm

open access: yesJournal of Telecommunications and Information Technology, 2023
Designing a finite impulse response (FIR) filter with minimal group delay has proven to be a difficult task. Many research studies have focused on reducing pass band and stop band ripples in FIR filter design, often overlooking the optimization of group
Sonelal Prajapati   +3 more
doaj   +1 more source

A Compact Dual-Band Differential Negative Group Delay Circuit With Wideband Common Mode Suppression

open access: yesIEEE Journal of Microwaves, 2022
A compact dual-band differential negative group delay (DNGD) circuit with wideband common mode suppression is proposed. Two small 180° phase shift swap structures of double-sided parallel striplines (DSPS) are adopted to realize intrinsic wideband
Zhongbao Wang   +3 more
doaj   +1 more source

Impact of Wind Gust on High-Speed Characteristics of Polarization Mode Dispersion in Optical Power Ground Wire Cables

open access: yesSensors, 2020
Polarization mode dispersion is recognized as a key factor limiting optical transmission systems, particularly those fiber links that run at bit rates beyond 10 Gbps.
Jozef Dubovan   +6 more
doaj   +1 more source

BDS-3 Triple-Frequency Timing Group Delay/Differential Code Bias and Its Effect on Positioning

open access: yesRemote Sensing, 2023
BeiDou Global Navigation Satellite System (BDS-3) broadcasts multifrequency signals that offer more choices of frequencies and more signal combinations for positioning. This paper analyzes the effect of timing group delay (TGD) and differential code bias
Yanjun Du   +5 more
doaj   +1 more source

Optical solitons with differential group delay for complex Ginzburg–Landau equation

open access: yesResults in Physics, 2020
This paper addresses optical solitons in birefringent fibers that is modeled by complex Ginzburg–Landau equation with Kerr law nonlinearity. Three forms of integration architecture retrieves soliton and other solutions to the model.
Yakup Yıldırım   +6 more
doaj   +1 more source

Active Compensation of Differential Group Delay in a Dual-Wavelength Pulsed Fiber Laser Driven by Quasi-Synchronous Pumping

open access: yesPhotonics, 2022
We report on synchronized dual-wavelength (1.07 μm and 1.24 μm) pulsed lasing driven by a quasi-synchronous primary pumping (at 0.98 μm) of an Yb-doped fiber laser, which incorporates also a P2O5-doped fiber as an intracavity Raman converter.
Boris Nyushkov   +4 more
doaj   +1 more source

Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing

open access: yesIEEE Access, 2020
We present a novel design of few-mode fiber (FMF) with a uniform differential mode group delay (U-DMGD) among propagating modes and apply the FMF to a single-fiber delay line module for implementing microwave photonic finite impulse response (FIR ...
Jian Zhao   +5 more
doaj   +1 more source

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