Method and device for multi-wavelength stable output of ring structure optical fiber laser

A fiber laser, stable output technology, used in lasers, laser components, phonon exciters, etc., can solve the problems of complex laser system systems, high cost, and the need for special fibers.

Inactive Publication Date: 2007-02-07
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

The few methods to achieve multi-wavelength operation of erbium-doped fiber lasers at room temper

Method used

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  • Method and device for multi-wavelength stable output of ring structure optical fiber laser
  • Method and device for multi-wavelength stable output of ring structure optical fiber laser
  • Method and device for multi-wavelength stable output of ring structure optical fiber laser

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Embodiment Construction

[0019] Select the fiber Raman amplifier 1 and the erbium-doped fiber amplifier 2 whose gain range is 1560nm to 1570nm for use; select the optical circulator 3 and the optical coupler 9 whose operating range is 1530nm to 1580nm for use, and one end of the optical coupler with a small fractional ratio (2%) is used as Laser output port. Sagnac loop filter 8 comprises a polarization controller 5 and another polarization controller 7 connected in series at the two ends of the high birefringence fiber 6 through an optical fiber, and the other ends of the two polarization controllers are respectively connected to the same port of the 3dB optical coupler 4 connect. The high birefringence fiber 6 has a length of 15.2 m and a birefringence of 0.00032. According to formula (1), the output wavelength interval is 0.5nm.

[0020] Such as figure 1 As shown, the first structure is adopted, the fiber Raman amplifier 1 is connected to one end of the erbium-doped fiber amplifier 2, the other ...

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Abstract

The related loop fiber laser multiple wavelength output device based on mixed gain of Lamb amplifier and erbium-doped fiber amplifier comprises: an optical loop with second port connected with Sagnac loop filter included two polarization controllers whose another end connects with 3dB optical coupler port, an optical coupler, a fiber Lamb amplifier, and the erbium-doped fiber amplifier. This invention can output laser stably.

Description

technical field [0001] The invention belongs to the field of fiber lasers, and in particular relates to a multi-wavelength stable output method and equipment of a ring-shaped fiber laser based on the mixed gain of a fiber Raman amplifier and an erbium-doped fiber amplifier. Background technique [0002] With the development of optical communication technology and fiber optic sensing technology, multi-wavelength fiber lasers have increasingly become a focus of attention. Multi-wavelength fiber lasers have the advantages of multi-wavelength output, low cost, and fiber compatibility, and have important applications in optical communication systems, sensing systems, industrial processing, and monitoring. [0003] As the most commonly used erbium-doped fiber laser at present, it faces a difficulty in realizing multi-wavelength operation, that is, the erbium-doped fiber at room temperature has a large uniform gain linewidth (there is a strong gain competition among multiple wavele...

Claims

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Application Information

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IPC IPC(8): G02F1/35H01S3/00
Inventor 陈达如秦山何赛灵
Owner ZHEJIANG UNIV
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