Spacing-adjustable and wavelength-tunable multiwavelength fibre laser with nonlinear Brillouin gain and birefringence fibre loop mirror |
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Authors: | Zhang Zu-Xing Wu Jian Xu Kun Hong Xiao-Bin and Lin Jin-Tong |
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Institution: | Key Laboratory of Information Photonics and Optical Communications of Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China; 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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Keywords: | multiwavelength fibre laser stimulated Brillouin
scattering birefringence fibre loop mirror |
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