Novel multi-wavelength Brillouin-Raman fiber laser

A Raman fiber and multi-wavelength technology, which is applied in the field of multi-wavelength Brillouin-Raman fiber lasers, can solve the problems of increased system cost and complexity, achieve narrow laser line width, improve laser efficiency, and narrow laser line wide effect

Active Publication Date: 2013-12-11
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Raman pumping schemes using multiple wavelengths can further expand the flat bandwidth, but at the same time lead to increased system cost and complexity

Method used

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  • Novel multi-wavelength Brillouin-Raman fiber laser
  • Novel multi-wavelength Brillouin-Raman fiber laser
  • Novel multi-wavelength Brillouin-Raman fiber laser

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Embodiment Construction

[0018] Such as figure 1 As shown, a new type of multi-wavelength Brillouin-Raman fiber laser, including Brillouin pump laser source 1, circulator 2, 3db coupler 3, long-distance single-mode fiber 4, wavelength division multiplexer 5, Raman pumping laser source 6, dispersion compensating fiber 7, isolator 8, among them, long-distance single-mode fiber 4 chooses 50km long-distance single-mode fiber 4, Raman pumping laser source 6 chooses 1455nm Raman pumping laser source 6 1. The dispersion compensating optical fiber 7 is a dispersion compensating optical fiber 7 of 10 km. The circulator 2 has three ports 1, 2, and 3. The output end of the Brillouin pump laser source 1 is connected to the 1 port of the circulator 2, and the 2 port of the circulator 2 is connected to the input port 1 of the 3db coupler 3. , the 3 port of the circulator is connected with the output port 4 of the 3db coupler. Among them, the 3db coupler 3 is a four-port 3db coupler 3, which has four ports 1, 2, 3...

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Abstract

The invention discloses a novel multi-wavelength Brillouin-Raman fiber laser which relates to the technical field of fiber lasers, and aims to provide a multi-wavelength Brillouin-Raman fiber laser capable of producing various wavelengths. The technical scheme of the invention is as follows: the novel multi-wavelength Brillouin-Raman fiber laser comprises a Brillouin pumping laser source, a circulator, a 3db coupler, a single mode fiber, a wavelength division multiplexer, a Raman pumping laser source, a dispersion compensation fiber and an isolator. The novel multi-wavelength Brillouin-Raman fiber laser has the beneficial effects that rayleigh scattering in the long-distance single mode fiber can provide a random distributed feedback function, and can reflect part of light to the dispersion compensation fiber again, thereby effectively improving the laser scattering efficiency, and producing more power-equalized multi-wavelength outputs; in addition, the rayleigh scattering in the long-distance single mode fiber has the effect of narrowing the laser line width by pressing, so that the laser line width is narrow, and further spectral reshaping on multi-wavelength lasers can be realized so as to achieve the effect of equalized line width between adjacent channels.

Description

technical field [0001] The invention belongs to the technical field of fiber lasers, in particular to a multi-wavelength Brillouin-Raman fiber laser. Background technique [0002] Multi-wavelength fiber lasers have important applications in fiber optic communications, fiber optic sensing, and characterization of optical devices. The first thing that was put into research was the multi-wavelength erbium-doped fiber laser made by using the gain characteristics of erbium-doped fiber. Later, a comb filter was used to form multi-wavelength resonance on the basis of multi-wavelength erbium-doped fiber laser. With the development of modern optical fiber communication, the demand for high-speed and large-capacity optical communication is increasing, and the existing erbium-doped fiber lasers are far from meeting the needs of social development. Dense wavelength division multiplexing (DWDM) is a feasible expansion solution , which requires light sources with multiple wavelengths...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/30
Inventor 袁程旭吴函王子南饶云江
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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