Results 61 to 70 of about 2,078 (167)

Amplification technology for spatial division multiplexing signals transmitted using multicore fibres

open access: yesIET Optoelectronics, Volume 18, Issue 6, Page 179-187, December 2024.
Multicore (MC‐) erbium‐doped fibre amplifier (EDFA) architecture is classified from the viewpoint of the number of erbium‐doped fibre (EDF) cores and its pumping method. In particular, the advantages of cladding pumped MC‐EDFA are shown. Abstract Amplification technologies needed for spatial division multiplexing (SDM) signal transmission have been ...
Hitoshi Takeshita
wiley   +1 more source

Stable Single-Longitudinal-Mode Erbium Fiber Ring Laser Utilizing Self-Injection and Saturable Absorber

open access: yesIEEE Photonics Journal, 2017
In this work, we demonstrate a wavelength-tunable erbium-doped fiber (EDF) ring laser with stable single-longitudinal-mode (SLM) output. Here using the self-injection method and unpumped EDF-based saturable absorber can suppress other densely side-mode ...
Chien-Hung Yeh   +4 more
doaj   +1 more source

Optimization of hybrid Raman-Brillouin-EDF amplification fiber laser in long distance FBG sensor system [PDF]

open access: yes, 2014
We present a hybrid Raman-Brillouin-Erbium Doped Fiber (EDF) amplification based Fiber Bragg Grating (FBG) sensor system capable of transmitting over long reach Single Mode Fiber (SMF). The performance of output spectra has been optimized and realized by
Abu Bakar, Muhammad Hafiz   +4 more
core   +1 more source

Open Cavity Controllable Dual-Wavelength Hybrid Raman-Erbium Random Fiber Laser

open access: yesIEEE Photonics Journal, 2019
This investigation demonstrates a simple open-ended controllable dual-wavelength random fiber laser based on hybrid amplification of the Raman and erbium-doped fiber (EDF).
Nadiah Husseini Zainol Abidin   +4 more
doaj   +1 more source

Observation of polarization domain wall solitons in weakly birefringent cavity fiber lasers

open access: yes, 2009
We report on the experimental observation of two types of phase-locked vector soliton in weakly birefringent cavity erbium-doped fiber lasers. While a phase-locked dark-dark vector soliton was only observed in fiber lasers of positive dispersion, a phase-
D. Y. Tang   +5 more
core   +1 more source

Multiwavelength operation of erbium-doped fiber lasers by periodic filtering and phase modulation [PDF]

open access: yes, 2009
This paper explains the principles behind multiwavelength operation of an erbium-doped fiber laser (EDFL) under the combined effect of cavity phase modulation and periodic wavelength filtering.
Mirza, M.A., Stewart, G.
core   +1 more source

Application of machine learning for signal recognition in distributed fibre optic acoustic sensing technology

open access: yesIET Optoelectronics, Volume 18, Issue 4, Page 81-95, August 2024.
The authors provide a comprehensive review of signal feature extraction and pattern recognition techniques applied in distributed acoustic sensing (DAS) technology. After introducing the fundamentals of DAS, specific applications are considered, and the following techniques have been analysed and compared: feature extraction algorithms based on wavelet
Yage Zhan, Lirui Liu, Kehan Li
wiley   +1 more source

Development of a portable and cost‐effective femtosecond fibre laser synchronizable with synchrotron X‐ray pulses

open access: yesJournal of Synchrotron Radiation, Volume 31, Issue 4, Page 821-828, July 2024.
This study introduces a compact, portable femtosecond fibre laser system optimized for synchronization with SPring‐8 synchrotron X‐ray pulses in a uniform filling mode, offering a practical and cost‐effective alternative to traditionally, fixed, installed laser systems for time‐resolved spectroscopy combining synchrotron X‐ray pulses and laser pulses ...
Keisuke Kaneshima   +3 more
wiley   +1 more source

Large Energy Q-Switched Fiber Laser With Black Phosphorus Saturable Absorber Fabricated by Sol−Gel Technique

open access: yesIEEE Photonics Journal, 2023
Black phosphorus (BP) has attracted extensive attention due to its unique optical and electrical properties. However, BP is easily oxidized in the air, which significantly limits its application.
Zhendong Chen   +5 more
doaj   +1 more source

Vector Dissipative Solitons in Graphene Mode Locked Fiber Lasers

open access: yes, 2010
Vector soliton operation of erbium-doped fiber lasers mode locked with atomic layer graphene was experimentally investigated. Either the polarization rotation or polarization locked vector dissipative solitons were experimentally obtained in a dispersion-
Akhmediev   +35 more
core   +1 more source

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