Results 191 to 200 of about 173,725 (252)

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

Design of large mode area, mode selection fiber

SPIE Proceedings, 2014
The paper study on the effect of index distribution on the mode field and calculated the mode distribution in various index profiles. A single mode gaussian hybrid multicore fiber with 19 hexagonally arranged high index quartz rods is designed and investigated. Theoretical and simulative results are presented and compared to the conventional large mode
Liang Jin, Li Xu, He Zhang, Yonggang Zou, Ye Ding, Xiaohui Ma   +5 more
openaire   +1 more source

High-power/energy large mode area tapered fiber amplifiers

LASE, 2021
A short-pulse Yb-doped fiber laser based on a master oscillator and power amplifier scheme is reported to yield an average power exceeding 500 W and pulse energy over 1 mJ.
V. Roy, P. Grenier, L. Desbiens, S. Deshaies, M. Deladurantaye, P. Paradis, M. Boivin, B. Labranche, A. Proulx, Y. Taillon   +9 more
semanticscholar   +1 more source

Parasitic Modes in Large Mode Area Microstructured Fibers

OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference, 2007
We present experimental evidence for parasitic modes guided by both bandgap and low density of state effects in large mode area silica microstructured fibers and explore ways of minimizing their presence via the fiber geometry.
Joanne C. Flanagan, R. Amezcua-Correa, F. Poletti, J.R. Hayes, N.G.R. Broderick, D.J. Richardson   +5 more
openaire   +1 more source

Bend resistant large mode area fiber with step-index core and single trench

Optical fiber technology (Print), 2019
A novel bend resistant large mode area fiber with step-index core and single trench in the cladding is proposed. Numerical results demonstrate that the largest effective mode area reaches up to 2460 μm2 at the wavelength of 2 μm when the bend radius is ...
Zhen Xing, Xin Wang, S. Lou, Wan Zhang, Zijuan Tang, Shibo Yan   +5 more
semanticscholar   +1 more source

Mode coupling in few-mode large-mode-area fibers

SPIE Proceedings, 2014
We present an experimental study on mode coupling characteristics of few-mode large-mode-area (LMA) fibers, which are widely used in high power fiber lasers. The modal power allocation is measured by modal decomposition of the nearfield intensity profile of the output beam.
Changgeng Ye, Joona Koponen, Ville Aallos, Laeticia Petit, Ossi Kimmelma, Teemu Kokki   +5 more
openaire   +1 more source

Generation of megawatt soliton at 1680 nm in very large mode area antiresonant fiber and application to three-photon microscopy

Journal of Optics, 2021
The spectral window around 1700 nm is interesting for in-depth multiphoton microscopy of intact tissues due to reduced scattering and absorption in this wavelength range.
H. Delahaye, Charles-Henri Hage, S. Bardet, I. Tiliouine, G. Granger, D. Gaponov, L. Lavoute, M. Jossent, S. Aleshkina, M. Bubnov, M. Salganskii, D. Lipatov, A. Guryanov, M. Likhachev, F. Louradour, Sébastien Février   +15 more
semanticscholar   +1 more source

Large Mode Area Solid-Core Photonic Bandgap Yb-Doped Fiber With Hetero-Structured Cladding for Compact High-Power Laser Systems

Journal of Lightwave Technology, 2021
We report on the design, realization and testing in pulsed amplification regime of a double-cladding, large mode area, polarization maintaining, solid core photonic bandgap fiber with Yb-doped core obtained from a Sol-Gel -made material.
O. Vanvincq, A. Cassez, R. Habert, H. E. Hamzaoui, K. Baudelle, S. Plus, D. Labat, M. Bouazaoui, Y. Quiquempois, G. Bouwmans, F. Audo, T. Chartier, E. Lallier, L. Bigot   +13 more
semanticscholar   +1 more source

Mode instabilities in large-mode-area fiber amplifiers

2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, 2013
The onset of mode instabilities is an effect occurring in high-average-power fiber lasers and amplifiers when their output average power exceeds a certain threshold value [1]. This effect is characterized by a sudden change of the output beam from an initially stable fundamental mode to a regime with more or less chaotic fluctuations between the ...
T. Eidam, C. Jauregui, H.-J. Otto, F. Jansen, F. Stutzki, J. Limpert, A. Txfcnnermann   +6 more
openaire   +1 more source

High-beam-quality signal and pump combiner with large-mode-area fiber for high-power fiber laser and amplifier.

Applied Optics, 2019
We investigate a high-beam-quality (6+1)×1 signal and pump combiner with 50 μm core diameter of the output fiber based on the tapered-fused fiber bundle technique for the first time.
Yanran Gu, C. Lei, Hua Yang, H. Xiao, Jin-yong Leng, Zilun Chen   +5 more
semanticscholar   +1 more source