Results 41 to 50 of about 65,580 (195)

Spatial Frequency Multiplexing of Fiber-Optic Interferometric Refractive Index Sensors Based on Graded-Index Multimode Fibers

Sensors, 2012
Fiber-optic interferometric sensors based on graded-index multimode fibers have very high refractive-index sensitivity, as we previously demonstrated. In this paper, spatial-frequency multiplexing of this type of fiber-optic refractive index sensors is ...
Hui-Juan Wu, Yun-Jiang Rao, Tian Zhao, Yu Wu, Yuan Gong, Li Liu   +5 more
doaj   +1 more source

Mode-Coupling Induced Crosstalk Optimization in a Graded-Index Six-Mode Fiber

IEEE Photonics Journal, 2022
We thoughtfully investigate the feasibility of reducing the mode-coupling caused crosstalk by optimizing the practical parameters of the few-mode fiber (FMF), based on the linear coupling theory. According to our simulation results, the low crosstalk FMF
Tianfeng Zhao, Feng Wen, Baojian Wu, Bo Xu, Kun Qiu   +4 more
doaj   +1 more source

Modeling of High-Power Graded-Index Fiber Amplifiers

Photonics
Graded-index fibers have been used in recent years to make high-power fiber lasers and amplifiers. Such fibers exhibit self-imaging, a phenomenon in which any optical beam periodically reproduces its original shape in undoped fibers (no gain).
Anuj P. Lara, Samudra Roy, Govind P. Agrawal   +2 more
doaj   +1 more source

Ultra-thin rigid endoscope: Two-photon imaging through a graded-index multi-mode fiber

, 2015
Rigid endoscopes like graded-index (GRIN) lenses are known tools in biological imaging, but it is conceptually difficult to miniaturize them. In this letter, we demonstrate an ultra-thin rigid endoscope with a diameter of only 125 microns.
Andresen, Esben Ravn, Bouwmans, Géraud, Cossart, Rosa, Monneret, Serge, Rigneault, Hervé, Sivankutty, Siddharth   +5 more
core   +3 more sources

Spatial beam self-cleaning and supercontinuum generation with Yb-doped multimode graded-index fiber taper based on accelerating self-imaging and dissipative landscape [PDF]

, 2019
We experimentally demonstrate spatial beam self-cleaning and supercontinuum generation in a tapered Ytterbium-doped multimode optical fiber with parabolic core refractive index profile when 1064 nm pulsed beams propagate from wider (122 µm) into smaller (
Couderc, V., Egorova, O. N., Fabert, M., Krupa, K., Leproux, P., Levchenko, A. E., Lipatov, D. S., Mansuryan, T., Millot, G., Modotto, D., Niang, A., Semjonov, S. L., Tonello, A., Wabnitz, S.   +13 more
core   +1 more source

Optical Fiber Cladding SPR Sensor Based on Core-Shift Welding Technology

Sensors, 2019
The typical structure of an optical fiber surface plasmon resonance (SPR) sensor, which has been widely investigated, is to produce the SPR phenomenon by the transmission of light in a fiber core.
Yong Wei, Jiangxi Hu, Ping Wu, Yudong Su, Chunlan Liu, Shifa Wang, Xiangfei Nie, Lu Liu   +7 more
doaj   +1 more source

New Silica Laser-Optimized Multimode Optical Fibers with Extremely Enlarged 100-μm Core Diameter for Gigabit Onboard and Industrial Networks

Fibers, 2020
We present new type of silica graded index laser-optimized multimode optical fibers (LOMF) with extremely enlarged core diameter up to 100 μm and “typical” “telecommunication” cladding diameter 125 μm. This optical fiber
Vladimir A. Burdin, Michael V. Dashkov, Vladimir V. Demidov, Konstantin V. Dukelskii, Alexander S. Evtushenko, Artem A. Kuznetsov, Alexandra S. Matrosova, Oleg G. Morozov, Egishe V. Ter-Nersesyants, Alexander A. Vasilets, Elena S. Zaitseva, Alexander E. Zhukov, Anton V. Bourdine   +12 more
doaj   +1 more source

Multi-mode photonic crystal fibers for VCSEL based data transmission

, 2003
Quasi error-free 10 Gbit/s data transmission is demonstrated over a novel type of 50 micron core diameter photonic crystal fiber with as much as 100 m length.
A. Petersson, H. R. Simonsen, J. Broeng, Johnson, Lægsgaard, M. Stach, Michalzik, Michalzik, N. A. Mortensen, R. Michalzik, Russell   +10 more
core   +1 more source

High-Power Continuous-Wave Directly-Diode-Pumped Fiber Raman Lasers

Applied Sciences, 2015
We describe novel fiber Raman lasers pumped directly by spectrally combined high power multimode laser diodes at 975 nm and emitting at 1019 nm. With a commercial multimode graded-index fiber, we reached 20 W of laser output power with a record slope ...
Tianfu Yao, Achar V. Harish, Jayanta K. Sahu, Johan Nilsson   +3 more
doaj   +1 more source

On the Digital Holographic Interferometry of Fibrous Material, I. Optical Properties of Polymer and Optical Fibers

, 2012
The digital holographic interferometry (DHI) was utilized for investigating the optical properties of polymer and optical fibers. The samples investigated here were polyvinylidene fluoride (PVDF) polymer fiber and graded-index (GRIN) optical fiber.
Barakat, C. von Kopylow, Chengand, de Angelis, El-Dessouky, El-Morsy, Gabor, H.M. El-Dessouky, Hamza, Hamza, Hamza, Hamza, Hibino, Hossain, K.M. Yassien, Kreis, Liu, M. Agour, Pluta, Pluta, Rappaz, Schnars, Schnars, Schnars, Simmens, Stetson, Surrel, Wahba, Yaroslavsky, Yassien, Zanger, Zhang   +31 more
core   +1 more source