Ultra-wide and flattened optical frequency comb generation based on cascaded phase modulator and LiNbO3-MZM offering terahertz bandwidth

S Ullah, R Ullah, Q Zhang, HA Khalid, KA Memon… - IEEE …, 2020 - ieeexplore.ieee.org
In this paper, a new technique for generation of ultra-wide and flattened optical frequency
comb (OFC) based on serial cascading of a phase modulator and dual-driven Lithium …

[HTML][HTML] Ultrawide and tunable self-oscillating optical frequency comb generator based on an optoelectronic oscillator

R Ullah, S Ullah, GZ Khan, Y Mao, J Ren, J Zhao… - Results in Physics, 2021 - Elsevier
A new mechanism for ultra-wide and tunable self-oscillating optical frequency comb (OFC)
based on a novel frequency tunable optoelectronic oscillator (OEO) is proposed using …

Dual Electro-Optic Comb Generator by Heterodyning Two Combs for Extending the Optical Bandwidth

R Ullah, U Ullah, S Ullah, AA Al-Atawi… - IEEE Photonics …, 2023 - ieeexplore.ieee.org
A novel dual-electro-optic (DEO) comb generator is proposed by heterodyning the optical
frequency combs (OFCs) to achieve a high bandwidth of~ 2.74 THz with an efficient and cost …

[HTML][HTML] A High-Capacity Optical Metro Access Network: Efficiently Recovering Fiber Failures with Robust Switching and Centralized Optical Line Terminal

R Ullah, S Ullah, A Almadhor, HS Alwageed… - Sensors, 2024 - mdpi.com
This study proposes and presents a new central office (CO) for the optical metro access
network (OMAN) with an affordable and distinctive switching system. The CO's foundation is …

Cascaded SSB comb generation using injection-locked seed lasers

N Yokota, H Yasaka - Optics letters, 2021 - opg.optica.org
We investigate a novel concept of cascaded single side band (SSB) comb generation for
improving the carrier-to-noise ratio (CNR), which degrades when the bandwidth of the SSB …

[HTML][HTML] Duplication elimination in cache-uplink transmission over B5G small cell network

MMAE Sufyan, WU Rehman, T Salam, QE Ali… - EURASIP Journal on …, 2021 - Springer
In this era of the digital world, data play a central role and are continuously challenging
spectrum efficiency. With the introduction of enriched multimedia user-generated content …

1.12 Tbps-16QAM Uncompensated LongHaul Transmission Employing a new SelfOscillating Optical Frequency Comb Generator both at transmitter and receiver

R Ullah, S Ullah, S Chen, A Almadhor… - IEEE Photonics …, 2024 - ieeexplore.ieee.org
A new optoelectronic oscillator (OEO) is implemented for a novel self-sustained flat-topped
self-oscillating optical frequency comb generator (SO-OFCG), which can be deployed in …

Performance investigation of PM-based wavelength remodulation scheme in bidirectional TWDM-PON

C Liu, Q Ding, J Song, L Zhang, X Wang… - Journal of Optical …, 2024 - degruyter.com
Signal remodulation mechanism is a promising cost-effective choice for future optical access
networks. This paper investigates the scheme of the phase modulator to remodulate …

Theoretical analysis of high-quality multicarrier generator based on double complementary re-circulating frequency shifter

F Tian, R Zhang, R Ullah, B Wang, Q Zhang… - Optics …, 2019 - Elsevier
Due to the inefficiency of the traditional multicarrier generation system, a double-band re-
circulating frequency shifting (RFS) structure based on DP-MZM (Dual Parallel Mach …

Performance Evaluation of Fiber Wireless (FiWi) Access Network Using Position Optimization of ONUs

N Chouhan, UR Bhatt… - International Journal of …, 2021 - ingentaconnect.com
Aim: Optimize position of ONUs using Whale Optimization Algorithm (WOA) to make cost-
effective FiWi network. Background: Fiber-Wireless (FiWi) is a network which provides …