Results 1 to 10 of about 1,589,013 (282)

Comprehensive Investigations on 1053 nm Random Distributed Feedback Fiber Laser

open access: yesIEEE Photonics Journal, 2017
We design a 1053 nm Yb3+-doped random fiber laser (YRFL) based on the combination of Yb3+ -doped fiber (YDF) and single mode fiber (SMF), in which the YDF provides active gain, while SMF offers random distributed feedback.
Mengqiu Fan   +10 more
doaj   +1 more source

Tunable Erbium-Doped Fiber Laser Based on Random Distributed Feedback

open access: yesIEEE 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

A distributed feedback silicon evanescent laser

open access: yesOptics Express, 2008
We report an electrically pumped distributed feedback silicon evanescent laser. The laser operates continuous wave with a single mode output at 1600 nm. The laser threshold is 25 mA with a maximum output power of 5.4 mW at 10 degrees C. The maximum operating temperature and minimum line width of the laser are 50 degrees C, and 3.6 MHz, respectively.
Alexander W, Fang   +4 more
openaire   +2 more sources

Symmetric Step-Apodized Distributed Feedback Fiber Laser With Improved Efficiency

open access: yesIEEE Photonics Journal, 2019
We propose and demonstrate a symmetric step-apodized distributed feedback (DFB) fiber laser, which has an improved efficiency and a narrow linewidth. This special DFB laser cavity is based on a unique symmetric step-apodized π-phase-shifted fiber ...
Kuikui Guo   +7 more
doaj   +1 more source

Single-mode biological distributed feedback laser

open access: yesLab on a Chip, 2013
Single-mode second order distributed feedback (DFB) lasers of riboflavin (vitamin B2) doped gelatine films on nanostructured low refractive index material are demonstrated. Manufacturing is based on a simple UV nanoimprint and spin-coating. Emission wavelengths of 543 nm and 562 nm for two different grating periods are reported.
Vannahme, C.   +3 more
openaire   +3 more sources

Distributed Output-Feedback Tracking Control for a Class of Nonlinear Multi-Agent Systems With Polynomial Growth

open access: yesIEEE Access
This paper investigates the distributed output-feedback tracking problem for a class of nonlinear multi-agent systems (MASs) with polynomial growth in unmeasurable states.
Jinxiu Liu   +4 more
doaj   +1 more source

Distributed Feedbacks for Time-Delay Signature Suppression of Chaos Generated From a Semiconductor Laser

open access: yesIEEE Photonics Journal, 2012
Chaotic dynamics of a semiconductor laser subject to distributed feedbacks from a fiber Bragg grating (FBG) are investigated through detailed simulations. Because of distributed reflections along the FBG, the approach of FBG feedback performs better than
Song-Sui Li, Qing Liu, Sze-Chun Chan
doaj   +1 more source

Distributed delays stabilize neural feedback systems

open access: yesBiological Cybernetics, 2008
We consider the effect of distributed delays in neural feedback systems. The avian optic tectum is reciprocally connected with the nucleus isthmi. Extracellular stimulation combined with intracellular recordings reveal a range of signal delays from 4 to 9 ms between isthmotectal elements.
Meyer, Ulrike   +5 more
openaire   +4 more sources

Inkjet-printed perovskite distributed feedback lasers

open access: yesOptics Express, 2018
We report on digitally printed distributed feedback lasers on flexible polyethylene terephthalate substrates based on methylammonium lead iodide perovskite gain material. The perovskite lasers are printed with a digital drop-on-demand inkjet printer, providing full freedom in the shape and design of the gain layer. We show that adjusting the perovskite
Florian Mathies   +5 more
openaire   +3 more sources

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