A Brillouin dynamic grating generating device and method
A technology of dynamic grating and generation method, applied in optics, nonlinear optics, laser utilizing scattering effect, etc., can solve problems such as difficult tuning and complex structure, and achieve the effect of reducing requirements, reducing operation difficulty, and reducing costs
Active Publication Date: 2018-03-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0004] The present invention provides a Brillouin dynamic grating in order to solve the problem of complex structure and difficult tuning existing in the dual light source method in the prior art and the need for complex feedback stabilization technology to ensure long-term stable operation of the system in the electro-optic modulation method The generating device and method have the characteristics of simple structure, easy tuning, and long-term stable operation
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[0026] The present invention will be further described below in conjunction with the embodiments, and the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other used embodiments obtained by persons of ordinary skill in the art without creative efforts all belong to the protection scope of the present invention.
[0027] With reference to the accompanying drawings, the Brillouin dynamic grating generating device of the present invention includes a laser source 1, a polarization modulator 3, a first polarization controller 4, an analyzer 5, a second polarization controller 6, an adjustable differential A group retarder 7, a third polarization controller 8 and a first polarization beam splitter 9, wherein the third polarization controller 8 is connected to the A port of the first polarization beam splitter; the polarization modulator 3 is also connected to a microwave Source 2; t...
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The invention belongs to the technical field of nonlinear fiber optics, and discloses a Brillouin dynamic grating generating device and method, which are used to solve the complex structure and difficult tuning of the dual light source method and the complex feedback stabilization technology of the electro-optical modulation method. To ensure the long-term stable operation of the system. The present invention includes a laser source, a microwave source, a polarization modulator, a first polarization controller, an analyzer, a second polarization controller, an adjustable differential group retarder, a third polarization controller and a first polarization beam splitter, and the first A fiber amplifier, a first optical isolator, a fourth polarization controller and an optical fiber, a second fiber amplifier, a second optical isolator, a fifth polarization controller, a second polarization beam splitter, an optical circulator and a sixth polarization control The sixth polarization controller is input with the signal to be measured.
Description
technical field [0001] The invention belongs to the technical field of nonlinear fiber optics, and discloses a Brillouin dynamic grating generating device and method. Background technique [0002] Brillouin Dynamic Grating (BDG) technology based on stimulated Brillouin scattering is one of the emerging research hotspots in the field of optical fiber communication and sensing. The advantages of tunability and fast reconfiguration have important application values in optical fiber distributed sensing, tunable optical filters, optical switches, optical fiber delay lines, and optical storage media. [0003] In order to generate a stable BDG, the two beams of pump light traveling in opposite directions in the fiber must have the same polarization state, and the frequency interval is the Brillouin offset of the fiber used. Currently, there are two methods for constructing two beams of pump light: dual light source method and electro-optic modulation method. When using the dual...
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IPC IPC(8): H01S3/30G02F1/35
Inventor 郑狄张伟利马瑞
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA