Results 41 to 50 of about 329,633 (198)

Modelling and Simulation of a Rectangular Large Mode Area Photonic Crystal Fiber [PDF]

EPJ Web of Conferences
This work presents a rectangular large core area (R-LCA) PCF with a cladding diameter of 125 µm, a pitch of 9 µm, and a hole diameter of 8 µm. The guided modes were obtained through numerical simulations using COMSOL Multiphysics.
Rúben Alves Mário, Silva Susana, Frazão Orlando   +2 more
doaj   +1 more source

Design and Analysis of a Large Mode Field Area and Low Bending Loss Multi-Cladding Fiber with Comb-Index Core and Gradient-Refractive Index Ring

Sensors, 2023
The large mode field area fiber can raise the tolerance of power, and high requirements for the bending characteristics of optical fibers are needed. In this paper, a fiber composed of a comb-index core, gradient-refractive index ring, and multi-cladding
Yining Zhang, Yudong Lian
doaj   +1 more source

Delamination resistant composites by interleaving bio-based long-chain polyamide nanofibers through optimal control of fiber diameter and fiber morphology [PDF]

, 2020
In this work an innovative electrospinning system is proposed that simultaneously has an adequate temperature resistance, a high increase in mode I (þ51%) and mode II (þ96%) delamination performance and can be commercially produced.
Daelemans, Lode, De Clerck, Karen, Meireman, Timo, Rahier, Hubert, Rijckaert, Sander, Van Paepegem, Wim   +5 more
core   +2 more sources

Large mode area fiber lasers and their applications [PDF]

Advanced Solid State Lasers, 2000
The area of fiber lasers has undergone rapid developments in recent years. Gone are the days when fiber lasers were seen as something of an irrelevant curiosity, offering interesting performance features, but always with power levels or other performance limitations, that made them unsuitable for all but a few applications.
Richardson, D.J., Offerhaus, H.L., Broderick, N.G.R.   +2 more
openaire   +2 more sources

Large-mode-area fibers operating near single-mode regime

Optics Express, 2016
Lower NA in large-mode-area fibers enables better single-mode operation and larger core diameters. Fiber NA has traditionally been limited to 0.06, mostly due to the control tolerance in the fabrication process. It has been recognized recently that transverse mode instability is a major limit to average power scaling in fiber lasers.
Fanting, Kong, Christopher, Dunn, Joshua, Parsons, Monica T, Kalichevsky-Dong, Thomas W, Hawkins, Maxwell, Jones, Liang, Dong   +6 more
openaire   +2 more sources

High-Order Modes Suppression in All-Glass Large-Mode Area Rare-Earth Doped Optical Fibers with Modified Cladding

Photonics, 2022
In the present work we have developed and realized a high core-to-cladding diameters ratio active optical fibers operated in a single-mode regime due to specially designed structure containing boron-doped and fluorine-doped rods.
Svetlana S. Aleshkina, Maxim M. Khudyakov, Tatiana A. Kashaykina, Mikhail V. Yashkov, Mikhail Yu. Salganskii, Vladimir V. Velmiskin, Mikhail M. Bubnov, Mikhail E. Likhachev   +7 more
doaj   +1 more source

Numerical Aperture of Single-Mode Photonic Crystal Fibers [PDF]

, 2002
We consider the problem of radiation into free space from the end-facet of a single-mode photonic crystal fiber (PCF). We calculate the numerical aperture NA=sin theta from the half-divergence angle theta ~ tan^{-1}(lambda/pi w) with pi w^2 being the ...
Broeng, J, Jensen, J R, Mortensen, N A, Skovgaard, P M W   +3 more
core   +2 more sources

Anisotropic tapered polarization-maintaining large mode area optical fibers

Optics Express, 2017
We demonstrate a novel type of tapered large mode area polarization-maintaining fiber. These birefringent fibers have an elliptical inner cladding and a core diameter that increases adiabatically from 8 µm to 70 µm. The polarization maintaining ability of the fiber samples was investigated by measuring the spatial distribution of polarization beat ...
Ustimchik, V. E., Rissanen, J., Popov, S. M., Chamorovskii, Y. K., Nikitov, S. A.   +4 more
openaire   +4 more sources

Steady-periodic method for modeling mode instability in fiber amplifiers

, 2013
We present a detailed description of the methods used in our model of mode instability in high-power, rare earth-doped, large-mode-area fiber amplifiers.
Smith, Arlee V., Smith, Jesse J.
core   +1 more source

Bending performance of large mode area multi-trench fibers

Optics Express, 2013
Bending performance of the Multi-trench Fibers (MTFs) has been investigated using the Finite Element Method. Numerical investigations show that MTFs can provide low-loss effective single mode operation under bent configuration, thanks to the resonant coupling of the Higher order Modes (HOMs).
Jain, Deepak, Baskiotis, Catherine, Sahu, Jayanta Kumar   +2 more
openaire   +4 more sources