CLASSICAL AREAS OF PHENOMENOLOGY |
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Spacing-adjustable and wavelength-tunable multiwavelength fibre laser with nonlinear Brillouin gain and birefringence fibre loop mirror |
Zhang Zu-Xing(张祖兴)a)b)†, Wu Jian(伍剑) a), Xu Kun(徐坤)a), Hong Xiao-Bin(洪小斌)a), and Lin Jin-Tong(林金桐) a) |
a Key Laboratory of Information Photonics and Optical Communications of Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China; b College of Physics & Communication Electronics, Key Lab of Photoelectron and Communications of Jiangxi Province, Jiangxi Normal University, Nanchang 330022, China
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Abstract This paper demonstrates a room-temperature multiwavelength fibre laser with spacing-adjustability and wavelength-tunability. The nonlinear gain of self-excited stimulated Brillouin scattering can suppress mode competition induced by homogeneous broadening of Erbium-doped fibre. With the use of a birefringence fibre loop filter, the wavelength spacing can be adjusted by changing the length of the used birefringence fibre, and the lasing wavelengths can be finely tuned through modifying the filtering profile of the birefringence filter. Multiwavelength output with spectral spacing as small as 0.076~nm and a wavelength number of more than 80 has been successfully produced.
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Received: 05 September 2009
Accepted manuscript online:
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PACS:
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42.55.Wd
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(Fiber lasers)
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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42.60.Fc
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(Modulation, tuning, and mode locking)
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42.79.Bh
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(Lenses, prisms and mirrors)
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42.79.Ci
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(Filters, zone plates, and polarizers)
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42.60.Lh
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(Efficiency, stability, gain, and other operational parameters)
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Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos.~60702006, 60736002,
60807014, 60837004 and 60967002), China Postdoctoral Science
Foundation, Open Fund of Key Laboratory of Information Photonics and
Optical Communications |
Cite this article:
Zhang Zu-Xing(张祖兴), Wu Jian(伍剑), Xu Kun(徐坤), Hong Xiao-Bin(洪小斌), and Lin Jin-Tong(林金桐) Spacing-adjustable and wavelength-tunable multiwavelength fibre laser with nonlinear Brillouin gain and birefringence fibre loop mirror 2010 Chin. Phys. B 19 064209
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