Results 51 to 60 of about 3,432,810 (326)
Three-photon excitation of quantum dots with a telecom band ultrafast fiber laser [PDF]
, 2014 We demonstrate three-photon excitation in quantum dots with a mode-locked fiber laser operating in the telecommunications band. We compare spectra and intensity dependence of fluorescence from one- and three-photon excitation of commercially available ...
Kielpinski, D. +3 more
core +2 more sources
Opto-Electronic Advances, 2022 In this article, we review recent advances in the technology of writing fiber Bragg gratings (FBGs) in selected cores of multicore fibers (MCFs) by using femtosecond laser pulses.
A. Wolf +5 more
semanticscholar +1 more source
Experimental study on the 500-W-level all-fiber amplifier operating near 980 nm
Results in Physics, 2021 In this paper, a 500-W-level all-fiber amplifier operating near 980 nm is demonstrated firstly, to the best of our knowledge. The amplifier is fabricated with a 105/250-μm core/cladding-diameter double-cladding Yb-doped fiber (DCYF).
Maoni Chen +6 more
doaj +1 more source
Interferometric distributed sensing system with phase optical time-domain reflectometry
Photonic Sensors, 2016 We demonstrate a distributed optical fiber sensing system based on the Michelson interferometer of the phase sensitive optical time domain reflectometer (φ-OTDR) for acoustic measurement. Phase, amplitude, frequency response, and location information can
Chen Wang +5 more
doaj +1 more source
Efficient and Broadband Emission in Dy3+-Doped Glass-Ceramic Fibers for Tunable Yellow Fiber Laser
Nanomaterials, 2023 Yellow lasers are of great interest in biology, medicine and display technology. However, nonlinear emission of near-infrared lasers at yellow still presents particularly complex optical alignment to date.
Qianyi Chen +9 more
doaj +1 more source
Multiple RF carrier distribution in a hybrid radio/fiber system employing a self-pulsating laser diode transmitter [PDF]
, 2002 A self-pulsating laser diode is used to generate a multicarrier microwave optical signal for use in a hybrid radio/fiber system. The self-pulsation frequency of the laser is controlled by external light injection, and can be varied between 14-24 GHz. The
Anandarajah, Prince M. +2 more
core +1 more source
Fiber‐Optic Communication Systems
, 2021 Preface. 1 Introduction. 1.1 Historical Perspective. 1.2 Basic Concepts. 1.3 Optical Communication Systems. 1.4 Lightwave System Components. Problems. References. 2 Optical Fibers. 2.1 Geometrical-Optics Description. 2.2 Wave Propagation.
G. Agrawal
semanticscholar +1 more source
Photonic Sensors, 2021 Fiber Bragg grating (FBG) is the most widely used optical fiber sensor due to its compact size, high sensitivity, and easiness for multiplexing. Conventional FBGs fabricated by using an ultraviolet (UV) laser phase-mask method require the sensitization ...
Jun He +4 more
semanticscholar +1 more source
Research on the surface subsidence monitoring technology based on fiber Bragg grating sensing
Photonic Sensors, 2016 In order to monitor the process of surface subsidence caused by mining in real time, we reported two types of fiber Bragg grating (FBG) based sensors.
Jinyu Wang +8 more
doaj +1 more source
Picometer-resolution dual-comb spectroscopy with a free-running fiber laser. [PDF]
Optics Express, 2016 Dual-comb spectroscopy holds the promise as real-time, high-resolution spectroscopy tools. However, in its conventional schemes, the stringent requirement on the coherence between two lasers requires sophisticated control systems.
Xin Zhao +7 more
semanticscholar +1 more source