Results 21 to 30 of about 388,335 (278)
Photonics, 2022 We present our theoretical model and experimental results on the extreme linewidth narrowing of an erbium-doped fiber distributed feedback (DFB) laser due to an additional random DFB via Rayleigh backscattering in a long single-mode fiber connected to ...
Mikhail I. Skvortsov +8 more
doaj +1 more source
Tunable Random Fiber Laser Based on Dual-Grating Structure
Photonics, 2023 In order to reduce the pumping threshold and achieve a short-cavity single-mode transmission with a narrow-linewidth random fiber laser, we propose a tunable random fiber laser based on the combination of random grating and highly reflective fiber Bragg ...
Yanan Niu +6 more
doaj +1 more source
Journal of Lightwave Technology, 2022 A compact random fiber laser based on a short artificial Rayleigh reflector and heavily-doped Er fibers (custom-made and commercial as a reference) has been proposed, characterized and optimized in terms of efficiency, linewidth and noise level.
M. Skvortsov +5 more
semanticscholar +1 more source
Triple-Wavelength Thulium-Doped Fiber Random Laser Based on Random Fiber Grating
Photonics, 2023 We demonstrate a triple-wavelength thulium-doped fiber random laser using a 10 cm long random fiber grating to provide random distributed feedback and a superimposed fiber Bragg grating as the wavelength-selective mirror.
Lewen Zhou +5 more
doaj +1 more source
Quantum electronics (Woodbury, N.Y.), 2021 Inscription of structures by a femtosecond laser beam allows one to produce disordered structures capable of increasing the Rayleigh backscatter intensity in the fibre at relatively low induced losses, which makes them potential candidates for use as ...
M. Skvortsov +8 more
semanticscholar +1 more source
A Random Search Framework for Convergence Analysis of Distributed Beamforming With Feedback [PDF]
IEEE Transactions on Information Theory, 2010 The focus of this work is on the analysis of transmit beamforming schemes with a low-rate feedback link in wireless sensor/relay networks, where nodes in the network need to implement beamforming in a distributed manner. Specifically, the problem of distributed phase alignment is considered, where neither the transmitters nor the receiver has perfect ...
Che Lin +2 more
openaire +2 more sources
1.7 μm self-synchronized picosecond pulsed random Raman fiber laser
Shenzhen Daxue xuebao. Ligong ban, 2022 Aiming at the structural complexity of the current 1.7 μm band short pulse lasers, we propose and implement a self-synchronized picosecond pulsed random Raman fiber laser.
ZHU Yihuai +10 more
doaj +1 more source
Photonics, 2023 All-fiber, polarization maintaining, narrow-bandwidth, Yb-doped fiber lasers with randomly distributed feedback operated near 976 nm were realized for the first time.
Danila A. Davydov +9 more
doaj +1 more source
Random feedback shift registers and the limit distribution for largest cycle lengths
Combinatorics, Probability and Computing, 2023 AbstractFor a random binary noncoalescing feedback shift register of width$n$, with all$2^{2^{n-1}}$possible feedback functions$f$equally likely, the process of long cycle lengths, scaled by dividing by$N=2^n$, converges in distribution to the same Poisson–Dirichlet limit as holds for random permutations in$\mathcal{S}_N$, with all$N!$possible ...
Richard Arratia +2 more
openaire +3 more sources
Tunable Erbium-Doped Fiber Laser Based on Random Distributed Feedback
IEEE Photonics Journal, 2014 A tunable erbium-doped fiber (EDF) laser based on random distributed feedback through backward Rayleigh scattering in a 20-km-long single-mode fiber and a tunable fiber Fabry-Perot interferometer filter is demonstrated.
Lulu Wang +3 more
doaj +1 more source