Results 261 to 270 of about 330,461 (300)

The design of large-mode-area single-mode fiber

SPIE Proceedings, 2008
Based on the frustrated total internal reflection theory, a leaky large-mode-area double clad fiber is designed. The propagation constants and leakage loss of the fundamental mode LP 01 and sub-low order mode LP 11 is investigated by using of the matrix method. Results show that the designed fiber can operate with single-mode.
Guohua Wu, Libo Li, Qihong Lou, Jun Zhou, Wenhan Huang, Shouqi Zhang, Wei Wang   +6 more
openaire   +1 more source

Very-large-mode-area, single-mode multicore fiber: erratum

Optics Letters, 2010
In a previous Letter [Opt. Lett.34, 2876 (2009)] a small error concerning a label of a figure is corrected here.
Moritz M. Vogel, Marwan Abdou-Ahmed, Andreas Voss, Thomas Graf   +3 more
openaire   +1 more source

Bend-compensated design of large-mode-area fibers

Optics Letters, 2006
Cone-shaped profiles illustrate the recently proposed bend-compensated strategy for large-mode-area amplifier fiber design. Simulations show that introducing a bend-compensating gradient into the fiber profile simultaneously improves mode area and reduces higher-order-mode impairments in a spooled-fiber amplifier.
openaire   +2 more sources

Photodarkening measurements in large mode area fibers

SPIE Proceedings, 2007
Yb-doped fibers are widely used in applications requiring high average output powers and high power pulse amplification. Photodarkening is one limiting factor in these fibers. In this paper, characterization of photodarkening in large-mode-area (LMA) fibers is presented building upon our previous work, which indicated that meaningful comparison of ...
Joona Koponen, Mikko Söderlund, Hanna J. Hoffman, Dahv Kliner, Jeffrey Koplow   +4 more
openaire   +1 more source

Very Large Mode Area Pixelated Bragg Fibers

Workshop on Specialty Optical Fibers and Their Applications, 2015
Generalized half-wave-stack condition combined with well-chosen hetero-structured cladding is used to design and realize scalable single-mode pixelated Bragg fibers with mode field diameter as large as 60 μm.
Y. Quiquempois, J-P Yehouessi, O. Vanvincq, G. Bouwmans, A. Cassez, L. Bigot   +5 more
openaire   +1 more source

Polarization-maintaining and single-mode large mode area pixelated Bragg fiber

Optics Letters, 2020
This Letter reports on a large mode area pixelated Bragg fiber in which some high refractive index rods were replaced by boron-doped rods that allows polarization maintaining behavior while keeping single-mode behavior. The realized all-solid fiber has a core diameter of 35 µm.
Vanvincq, Olivier, Habert, Rémi, Cassez, Andy, Baudelle, Karen, Labat, Damien, Delobel, Sylvain, Quiquempois, Yves, Bouwmans, Géraud, Bigot, Laurent   +8 more
openaire   +3 more sources

Large Effective-Area Few-Mode Multicore Fiber

IEEE Photonics Technology Letters, 2012
A design concept of few-mode multicore fiber is presented. Cores with a step-index profile are designed to support two LP modes over the C band and the L band with a large effective area larger than 110 μm2. The pitch of cores is determined regarding the inter-core crosstalk related to the LP11 mode.
K. Takenaga, Y. Sasaki, null Ning Guan, S. Matsuo, M. Kasahara, K. Saitoh, M. Koshiba   +6 more
openaire   +1 more source

Ultra large mode area pixelated Bragg fiber

SPIE Proceedings, 2016
We report on the design and the fabrication of a new design of an all-solid Bragg fiber based on the pixelization and heterostructuration of a cladding made of only two high index rings. The thickness of the low index ring as well as the geometry of the heterostructuration (its symmetry and the number of removed pixels) have been chosen to maximize the
J.-P. Yehouessi, G. Bouwmans, O. Vanvincq, A. Cassez, R. Habert, Y. Quiquempois, L. Bigot   +6 more
openaire   +1 more source

Single-modeness of short large mode area fibers: An experimental study

Optics Communications, 2007
Abstract We experimentally investigated the limits to the endlessly single-modeness of large mode area photonic crystal fibers. We analyzed two versions of a commercial large mode area fiber with equal structural parameters but five or seven confining rings, and in both cases we found that the single mode regime becomes critical for short ( 1 m ...
A.M. Grassi, F. Casagrande, M. D'Alessandro, S. Marinoni   +3 more
openaire   +2 more sources

Polarizing very-large-mode-area bragg fiber

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011
Single-mode larger-mode-area (LMA) all-glass (free of air-holes) fibers are required for all-fiber high-power lasers and amplifiers as they allow for efficient splicing with other components, which is impossible in the case of LMA photonic crystal fiber. Recently, we have demonstrated an active all-glass Bragg fiber with a mode-field diameter of 26 µm (
S. S. Aleshkina, M. E. Likhachev, A.D. Pryamikov, D. A. Gaponov, A. N. Denisov, M. M. Bubnov, M. Yu. Salganskii, A. N. Guryanov, S. Fevrier   +8 more
openaire   +1 more source