Results 51 to 60 of about 173,725 (252)

Modeling of transverse mode interaction in large-mode-area fiber amplifiers

Optics Express, 2008
We model the transverse mode interaction in a large-mode-area fiber amplifier by solving the Fresnel wave equation including local gain saturation. In order to calculate the electric field distribution we apply a finite difference beam propagation method, which is followed by the derivation of the modal powers and modal polarization states.
N, Andermahr, C, Fallnich
openaire   +2 more sources

Modeling large air fraction holey optical fibers [PDF]

, 2000
We develop a modal decomposition approach to solve the full vector wave equation for holey optical fibers (HF). This model can be used to explore the modal properties of a wide range of HFs, including those with large air holes. The optical properties of
Bennett, P.J., Richardson, D.J., Broderick, N.G.R., Monro, T.M.   +3 more
core   +1 more source

All Solid Multistep-Index Core Large Mode Area Single-Mode Fiber

IEEE Photonics Journal
In this paper, a large-mode-area (LMA) single-mode fiber based on multistep-index core structure is proposed. The multistep-index core increases the mode field area (MFA).
Yulai She, Runyu Song, Daiqi Hou, Tiansheng Ling, Jianping Ma   +4 more
doaj   +1 more source

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

Characteristics of Q-switched cladding-pumped ytterbium-doped fiber lasers with different high-energy fiber designs

, 2001
We theoretically and experimentally analyze Q-switched cladding pumped ytterbium-doped fiber lasers designed for high pulse energies. We compare the extractable energy from two high-energy fiber designs: (1) single- or few-moded low-NA large mode area ...
Alvarez-Chavez, J.A., Clarkson, W.A., Nilsson, J., Offerhaus, H.L., Turner, P.W., Renaud, Cyril C., Richardson, D.J., Grudinin, A.B.   +7 more
core   +1 more source

Robust single-mode ytterbium-doped large pitch fiber emitting 294 W

, 2022
Paper 791417Ytterbium-doped Large Pitch Fibers with very large mode areas are investigated in a high power fiber amplifier configuration. An average output power of 294 W is demonstrated, while maintaining robust single-mode operation with a mode field ...
Jansen, F., Stutzki, F., Steinmetz, A., Tünnermann, A., Eidam, T., Jauregui, C., Limpert, J.   +6 more
core   +1 more source

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

Extreme large mode area in single-mode pixelated Bragg fiber

Optics Express, 2016
This paper reports the design and the fabrication of an all-solid photonic bandgap fiber with core diameter larger than 100 µm, a record effective mode area of about 3700 µm2 at 1035 nm and robust single-mode behavior on propagation length as short as 90 cm.
Yehouessi, Jean-Paul, Vanvincq, Olivier, Cassez, Andy, Douay, Marc, Quiquempois, Yves, Bouwmans, Géraud, Bigot, Laurent   +6 more
openaire   +2 more sources

Theoretical analysis of the SRS-induced mode distortion in large-mode area fiber amplifiers.

Optics Express, 2018
In this paper, the spectral evolution properties of different transverse modes with the stimulated Raman scattering (SRS) effect are analyzed in large-mode-area (LMA) fiber amplifiers for the first time.
W. Liu, P. Ma, C. Shi, P. Zhou, Zong-fu Jiang   +4 more
semanticscholar   +1 more source