Results 1 to 10 of about 27,744 (263)

Extreme Narrowing of the Distributed Feedback Fiber Laser Linewidth Due to the Rayleigh Backscattering in a Single-Mode Fiber: Model and Experimental Test

open access: yesPhotonics, 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   +3 more sources

Design for Distributed Feedback Laser Biosensors Based on the Active Grating Model [PDF]

open access: yesSensors, 2019
The distributed feedback (DFB) laser is widely used in sensing because of its portable size, simple fabrication and high sensitivity. Most theoretical design models are based on passive Bragg gratings.
Bowen Wang, Yi Zhou, Zhihe Guo, Xiang Wu
doaj   +2 more sources

Ultra-high spectral purity laser derived from weak external distributed perturbation

open access: yesOpto-Electronic Advances, 2023
Ultra-high spectral purity lasers are of considerable research interests in numerous fields such as coherent optical communication, microwave photonics, distributed optical fiber sensing, gravitational wave detection, optical clock, and so on. Herein, to
Laiyang Dang   +9 more
doaj   +1 more source

Interferometric Optical Pumping of an InGaN/GaN-Based Gain-Coupled Distributed Feedback Multi Quantum Well Laser

open access: yesCrystals, 2023
We describe an all-optical method to achieve—prior to further advanced processing steps—a perfect match of the relevant wavelength-sensitive parameters of an InGaN/GaN semiconductor distributed feedback laser.
Daniel Hofstetter   +2 more
doaj   +1 more source

Low-Threshold Microlasers Based on Holographic Dual-Gratings

open access: yesNanomaterials, 2021
Among the efforts to improve the performances of microlasers, optimization of the gain properties and cavity parameters of these lasers has attracted significant attention recently.
Tianrui Zhai   +3 more
doaj   +1 more source

Sole Excited-State InAs Quantum Dot Laser on Silicon With Strong Feedback Resistance

open access: yesFrontiers in Materials, 2021
A feedback insensitive laser is a prerequisite for a desirable laser source for silicon photonic integration, as it is not possible to include an on-chip optical isolator.
Jia-Jian Chen   +9 more
doaj   +1 more source

Monolithically integrated laser with DBR for wideband and low time delay signature chaos generation

open access: yesFrontiers in Physics, 2023
Chaotic laser has attracted a large amount of attention due to its broad spectrum, noise-like characteristics, and photonic integrated chaotic semiconductor lasers have further expanded the application field of chaotic laser for their small size and ...
Shuhui Li   +6 more
doaj   +1 more source

MAPbBr3 First‐Order Distributed Feedback Laser with High Stability

open access: yesAdvanced Photonics Research, 2023
A green‐emitting perovskite first‐order distributed feedback (DFB) laser based on the methylammonium lead bromide (MAPbBr3) with high stability is demonstrated for the first time.
Cheng Chang   +3 more
doaj   +1 more source

Two-Segment Gain-Coupled Distributed Feedback Laser

open access: yesIEEE Photonics Journal, 2018
A two-segment regrowth-free gain-coupled distributed feedback (DFB) laser monolithically integrated different gain contrast segments was proposed, realizing both wavelength-tunable (5 nm) and wavelength stabilization characteristics, controlled by a ...
Feng Gao   +11 more
doaj   +1 more source

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