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Method for producing single-longitudinal-mode multi-wavelength broadband-tunable brillouin laser and brillouin laser device

A laser generation, multi-wavelength technology, used in lasers, phonon exciters, laser parts, etc., can solve the problems of low signal-to-noise ratio and less practical use

Inactive Publication Date: 2012-07-11
YICHUN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The multi-longitudinal modes caused by the long cavity and the low signal-to-noise ratio caused by the gain medium make this kind of multi-wavelength laser rarely obtain practical

Method used

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  • Method for producing single-longitudinal-mode multi-wavelength broadband-tunable brillouin laser and brillouin laser device
  • Method for producing single-longitudinal-mode multi-wavelength broadband-tunable brillouin laser and brillouin laser device
  • Method for producing single-longitudinal-mode multi-wavelength broadband-tunable brillouin laser and brillouin laser device

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Embodiment approach

[0025] Now by embodiment and in conjunction with accompanying drawing, invention is further described:

[0026] The single longitudinal mode multi-wavelength broadband tunable Brillouin laser generation method of the present invention uses only one optical passive resonant cavity and one placed outside the optical passive resonant cavity (or optical resonant cavity) whose output end is connected to the The erbium-doped fiber amplifier connected with the passive resonant cavity through a circulator is used to separate the erbium-doped fiber amplifier from the optical passive resonant cavity. Only the Brillouin laser oscillation is realized in the passive resonant cavity, and the Brillouin pump light amplification mechanism Placed outside the resonator, the input end of the erbium-doped fiber amplifier is connected to a tunable laser (light source) through a fiber coupler, and at the same time, the optical passive resonator is connected to the input end of the erbium-doped fiber ...

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Abstract

The invention discloses a producing method which is easily implemented and can output stable single-longitudinal-mode multi-wavelength broadband-tunable brillouin laser, and a brillouin laser device. The method uses the brillouin laser device which is composed of an optical passive resonant cavity and an erbium-doped fiber amplifier arranged at the outer part of the optical passive resonant cavity, brillouin stokes light generated in the optical resonant cavity is fed back to the erbium-doped fiber amplifier, and therefore the single-longitudinal-mode multi-wavelength broadband-tunable brillouin laser is obtained. The brillouin laser device comprises the erbium-doped fiber amplifier, a tunable laser device and the optical passive resonant cavity, wherein the erbium-doped fiber amplifier is arranged at the outer part of the optical passive resonant cavity; the tunable laser device is connected with the erbium-doped fiber amplifier through a fiber coupler; and the optical passive resonant cavity is connected with the output end of the erbium-doped fiber amplifier. Meanwhile, the optical passive resonant cavity is connected with the input end of the erbium-doped fiber amplifier through the fiber coupler.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a single longitudinal mode, multi-wavelength, broadband tunable Brillouin laser generation method and a Brillouin laser. Background technique [0002] Brillouin lasers have been used in a wide range of applications due to their noise reduction, line width narrowing and high stability properties; for example, they have fundamental roles in measurement, sensing, microwave generation, optical communication and other fields. [0003] Previous Brillouin lasers were basically generated under the condition of active cavity, and the quality of laser beam was limited. For example, a longer (cavity length of more than 20 meters) active cavity Brillouin laser is difficult to generate a single longitudinal mode; while a shorter cavity length (cavity length less than 20 meters) active cavity Brillouin laser can generate a single longitudinal mode Mode output, but the signal-to-noise rat...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/30H01S3/10
Inventor 肖平平胡红武戚珉
Owner YICHUN UNIVERSITY
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