Results 211 to 220 of about 713 (248)

Fabrication of thulium-doped silica optical fiber

SPIE Proceedings, 1998
In this article, we mainly describe the preparation of the silica optical fiber doped with rare earth ion Tm3+ by utilizing solution-doped technique, and the control of relevant parameters of the fiber. The control and the measurement method of dopantion concentration of Tm3+ have also been discussed.
Ling Ruan, Wentao Wang, Zhijie Zhang, Ding Ning, Yunhua Shen, Dongfeng Liu   +5 more
openaire   +1 more source

Scaling Bottlenecks in Thulium-doped Fiber Lasers

Frontiers in Optics 2013, 2013
Thulium offers novel applications at 2 μm, and with continued developments, peak and average powers will increase to that of rival rare-earth dopants. Limitations that impede growth are namely; nonlinearities, thermal management, and fiberized components.
Alex Sincore, R. Andrew Sims, Christian Gaida, Pankaj Kadwani, Lawrence Shah, Martin C. Richardson   +5 more
openaire   +2 more sources

High Power Thulium Doped Fiber Lasers

Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, 2009
Thulium-doped silica fiber lasers and amplifiers offer a route to very high average power in the two-micron wavelength regime. This presentation reviews recent progress and considers the prospects for further improvement in performance.
W. A. Clarkson, L. Pearson, Z. Zhang, J. W. Kim, D. Shen, A. J. Boyland, J. K. Sahu, M. Ibsen   +7 more
openaire   +1 more source

Recent progress in thulium-doped fiber amplifiers

SPIE Proceedings, 2003
I review the fast growing progress in thulium doped fiber amplifiers (TDFA) for S-band optical communication systems. The main results reported on pump schemes and amplifiers efficiencies are given. In particular, the characterization of TDFAs regarding distributed gain optimization using the coherent optical frequency domain reflectometry is described,
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Q-switched thulium-doped fiber laser

Optical Engineering, 1993
A tunable Q-switched thulium-doped single-mode silica fiber laser is presented for the first time. Its performance is analyzed as a function of pulse repetition rate and pumping power. The optimization of laser parameters resulted in 4 W/1 30 ns, 1 .92-jrm wavelength pulses generated at a 4-kHz repetition rate. From the measured values of small- signal
openaire   +1 more source

Tunable thulium-doped all-fiber laser

IEEE Photonics Technology Letters, 1998
We demonstrate a tunable thulium-doped fiber ring laser wherein a single fused coupler acts simultaneously as the wavelength-division multiplexing for pump radiation, a lasing wavelength selective element, and output mirror. Temperature tuning of up to 2 nm//spl deg/C over a range of 40 nm and polarization tuning of over 100 nm within the spectral ...
R.L. Shubochkin, V.A. Kozlov, A.L.G. Carter, T.F. Morse   +3 more
openaire   +1 more source

High-power all-fiberized thulium-doped fiber MOPA

Laser Physics Letters, 2013
We demonstrate a high-power all-fiberized thulium-doped fiber laser in a master oscillator power amplifier (MOPA) architecture giving output powers up to 100.4 W. A large-mode-area double-clad active fiber is employed as the gain medium. The laser is pumped by pigtailed laser diodes (LD) with a central wavelength of 792 nm.
H B Lü, P Zhou, H W Zhang, X L Wang, Z F Jiang   +4 more
openaire   +1 more source

Spectral hole burning measurement thulium-doped fiber amplifiers

Optics Letters, 2002
An accurate technique was implemented to measure spectral hole burning in rare-earth amplifiers at room temperature, showing that thulium-doped fiber amplifiers exhibit hole depths four times lower than those of C -band erbium-doped fiber amplifiers.
Fabien, Roy, Dominique, Bayart, Céline, Heerdt, André, Le Sauze, Pascal, Baniel   +4 more
openaire   +2 more sources

Q-switched thulium-doped photonic crystal fiber laser

Optics Letters, 2012
We report a novel, Tm-doped photonic crystal fiber (PCF) actively Q-switched oscillator that provides ~8.9 kW peak power with 435 µJ, 49 ns pulses at 10 kHz repetition rate at 2 μm wavelength. This fiber has a mode-field area >1000 μm2, the largest of any flexible PCF providing diffraction-limited beam quality to the best of our knowledge.
Pankaj, Kadwani, Norbert, Modsching, R Andrew, Sims, Lasse, Leick, Jes, Broeng, Lawrence, Shah, Martin, Richardson   +6 more
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Recent advances in thulium-doped fiber amplifiers

Optical Fiber Communication Conference and Exhibit, 2002
Summary form only given. Presents a comparison between different pumping schemes implemented within fluoride doped fibers. The first part deals with the performances of different up-conversion pumps. In the second part, the advantages and drawbacks of several ground state pump wavelengths are discussed.
openaire   +1 more source