Results 31 to 40 of about 618,573 (283)

Characteristics of Collimators Based on the Large-Mode-Area CMCF for Coupling Laser Beam

Applied Sciences, 2021
A new collimator based on a homemade concentric multilayer-core fiber (CMCF) is proposed and experimentally demonstrated. This collimator was fabricated using a tail fiber with large mode area and single-mode operation.
Xuran Zhang, Xiao Liang, Zhenxu Bai, Shuo Liu, Zhaoxin Geng, Tianhe Yin   +5 more
doaj   +1 more source

Sub-80 fs dissipative soliton large-mode-area fiber laser [PDF]

Optics Letters, 2010
We report on high-energy ultrashort pulse generation from an all-normal-dispersion large-mode-area fiber laser by exploiting an efficient combination of nonlinear polarization evolution (NPE) and a semiconductor-based saturable absorber mode-locking mechanism.
Baumgartl, M., Ortaç, B., Lecaplain, C., Hideur, A., Limpert J., Tünnermann, A.   +5 more
openaire   +4 more sources

Predicting macrobending loss for large-mode area photonic crystal fibers

, 2004
We report on an easy-to-evaluate expression for the prediction of the bend-loss for a large mode area photonic crystal fiber (PCF) with a triangular air-hole lattice. The expression is based on a recently proposed formulation of the V-parameter for a PCF
Albertsen, M., Bjarklev, A., Bonacinni, D., Folkenberg, J. R., Mortensen, N. A., Nielsen, M. D.   +5 more
core   +1 more source

Single-mode regime in large-mode-area rare-earth-doped rod-type PCFs [PDF]

, 2009
In this paper, large-mode-area, double-cladding, rare-earth-doped photonic crystal fibers are investigated in order to understand how the refractive index distribution and the mode competition given by the amplification can assure singlemode propagation.
Broeng, Jes, Cucinotta, A., Lægsgaard, Jesper, Passaro, D., Poli, F., Selleri, S.   +5 more
core   +2 more sources

Passive Mode-Locked Operation of Large Mode Area Fibre Lasers [PDF]

CLEO/Europe Conference on Lasers and Electro-Optics, 1998
Recently much work on fibre lasers has concentrated on improving the maximum output energy and peak powers available from such systems. An important recent advance in this area has been the development of single transverse-mode, large mode area (LMA-) doped fibre1.
Broderick, N.G.R., Offerhaus, H.L., Richardson, D.J., Sammut, R.A., Caplen, J., Dong, L.   +5 more
openaire   +2 more sources

Birefringence analysis of multilayer leaky cladding optical fibre [PDF]

, 2010
We analyse a multilayer leaky cladding (MLC) fibre using the finite element method and study the effect of the MLC on the bending loss and birefringence of two types of structures: (i) a circular core large-mode-area structure and (ii) an elliptical ...
A Kumar, B Dussardier, Dussardier B Trzesien S Ude M Rastogi V Kumar A Monnom G Pal B P Sharma A, G Monnom, Kumar A, Kumar A, L Labonté, Rastogi V Kumar A Sharma E K Verma A K Gupta R S Gupta M Saxena M Singh S, V Rastogi   +8 more
core   +4 more sources

Design and Fabrication of Single Transverse Mode Passive Large-Pitch Fibers

Cumhuriyet Science Journal
The fabrication processes of single transverse mode passive large-pitch optical fiber (LPF) have been proposed and investigated. The LPF design, combined with the fundamental mode operating principle of delocalizing higher-order modes, has led to ...
Bülend Ortaç
doaj   +1 more source

158µJ pulses from a single transverse mode, large mode-area EDFA

, 1997
We report the amplification of 10pJ-100pJ, semiconductor diode pulses up to an energy of 158µJ and peak powers >100kW in a multi-stage fibre amplifier chain based on a single-mode, large mode-area erbium doped amplifier design. These results represent
Taverner, D., Richardson, D.J., Dong, L., Caplen, J.E., Williams, K., Penty, R.V.   +5 more
core   +1 more source

Bend-resistant octo-wing silica segmented cladding fiber with high index rings

Results in Physics, 2022
We have proposed a novel segmented cladding fiber (SCF) design and the bending effects were investigated in detail. The proposed SCF with large mode area properties has a uniform circular core and octo-wings of rods with higher refractive index than the ...
Marzieh Pournoury, Donghyun Kim
doaj   +1 more source

The radiated fields of the fundamental mode of photonic crystal fibers [PDF]

, 2005
The six-fold rotational symmetry of photonic crystal fibers has important manifestations in the radiated fields in terms of i) a focusing phenomena at a finite distance from the end-facet and ii) the formation of low-intensity satellite peaks in the ...
Akbari, Mahmood, Dabirian, Ali, Mortensen, Niels Asger   +2 more
core   +1 more source