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Multi-wavelength Brillouin fiber laser

A fiber laser, multi-wavelength technology, used in lasers, laser devices, laser parts and other directions, can solve problems such as increasing the bit error rate and difficulty in signal adjustment

Inactive Publication Date: 2020-10-27
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

Such a wavelength interval makes signal adjustment very difficult, and also causes crosstalk between channels to increase the bit error rate, which is far from meeting the needs of modern technology.

Method used

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Embodiment Construction

[0014] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] A multi-wavelength Brillouin fiber laser, characterized in that it includes a narrow linewidth adjustable laser (1), a first fiber coupler (2), a first optical amplifier (3), and a four-port optical circulator (4) , a first Brillouin fiber (5), a three-port optical circulator (6), a second Brillouin fiber (7), a second optical amplifier (8), and a second fiber coupler (9).

[0016] It is characterized in that the output end of the narrow linewidth adjustable laser (1) is connected to the A1 port of the A end of the four-port fiber coupler (2), and the B1 port of the B end of the four-port fiber coupler is connected to the input of the first optical amplifier (3). The 41 ports of the four-port optical circulator (4) are connected with the output end of the first optical amplifier, the 42 ports of the four-port optical circulator (4) are ...

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Abstract

The invention discloses a multi-wavelength Brillouin fiber laser. The laser comprises a narrow linewidth adjustable laser (1), a first optical fiber coupler (2), a first optical amplifier (3), a four-port optical circulator (4), a first Brillouin optical fiber (5), a three-port optical circulator (6), a second Brillouin optical fiber (7), a second optical amplifier (8) and a second optical fiber coupler (9). Laser output by the narrow-linewidth adjustable laser (1) is used as a Brillouin pump (BP). The BP generates stimulated Brillouin scattering in the first Brillouin optical fiber to generate first-order Stokes (BS1). The BS1 is subjected to cascade stimulated Brillouin scattering in the second Brillouin optical fiber to generate second-order Stokes (BS2) and third-order Stokes (BS3), and by means of the power gain effect of the first optical amplifier and the second optical amplifier, the multi-wavelength optical fiber laser with the wavelength interval being three times of the Brillouin frequency shift value can be obtained. The multi-wavelength fiber laser has a simple structure, is low in cost and has application potential in optical communication, wavelength division multiplexing systems, microwave photons and optical fiber sensing networks.

Description

technical field [0001] The invention relates to the fields of optical fiber communication technology, fiber laser technology and microwave photon technology, in particular to a multi-wavelength Brillouin fiber laser with triple Brillouin frequency shift wavelength interval. Background technique [0002] With the rapid development of Internet technology and various communication technologies, the development trend of all-optical communication networks is bound to move towards ultra-high speed, ultra-large capacity, and long-distance transmission. Multi-wavelength fiber lasers are an effective way to generate a large number of multi-wavelengths by combining the nonlinear gain in Brillouin-gained fibers with the linear gain in erbium-doped fiber amplifiers. Multiwavelength fiber lasers have potential applications in high-capacity dense wavelength-division multiplexing systems, microwave photonics, fiber-optic sensing networks, and optical component testing. [0003] Multi-wave...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/30H01S3/067H01S3/23
CPCH01S3/067H01S3/06758H01S3/2316H01S3/302
Inventor 徐荣辉张先强牛国振汪杰君张文涛苑立波
Owner GUILIN UNIV OF ELECTRONIC TECH
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