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Single longitudinal mode optical fiber laser based on Fabry-Perot resonant cavity

A Polo resonator, fiber laser technology, applied in the field of lasers, can solve problems such as complex structure, and achieve the effect of low cost and simple structure

Inactive Publication Date: 2008-02-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the high-power laser with the above structure is that the laser operates in the state of multiple longitudinal modes, and the structure is complex

Method used

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  • Single longitudinal mode optical fiber laser based on Fabry-Perot resonant cavity
  • Single longitudinal mode optical fiber laser based on Fabry-Perot resonant cavity
  • Single longitudinal mode optical fiber laser based on Fabry-Perot resonant cavity

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Embodiment Construction

[0017] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0018] As shown in Figure 1, this embodiment includes: laser amplifier 1, unidirectional isolator 7, 30 / 70 coupler 8, polarization controller (PC) 9, erbium-doped fiber (EDF) 10, fiber ring 11, Bragg grating (FBG) 12, the connection relationship is: the output end of laser amplifier 1 is connected to one end of polarization controller 9 through 70% ports of 30 / 70 coupler 8, and the other end of polarization controller 9 is connected to fiber ring 11 through erbium-doped optical fiber 10 One end, the other end of the fiber ring 11 is connected to the Bragg grating 12, ...

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Abstract

Single-longitudinal mode optical fiber laser comprises: a laser amplifier, a single direction isolator, 30 / 70 coupler polarization controller, erbium-doped optical fiber, optical fiber ring and Brag optical grating. The connections are: the output end of the laser amplifier, via the 70% port of the 30 / 70 coupler, is connected with one end of the polarization controller, the other end of which controller, via erbium-doped optical fiber, is connected with one end of the optical fiber ring; the other end of the ring is connected with the wave-length selection Brag optical grating; the wave-coupling end of the 30 / 70 coupler is connected with the input end of the single direction isolator; the output end of the isolator is connected with the input end of the amplifier. This inventive device output power is 867 mV, wave length is 1.565 um single longitudinal laser, its SNR is over 40 dB, pumping rate is more than 17.6%.

Description

technical field [0001] The invention relates to a laser in the technical field of optical communication, in particular to a single longitudinal mode fiber laser based on a Fabry-Perot resonant cavity. Background technique [0002] With the rapid growth of optical communication and fiber optic sensor technology, the demand for single longitudinal mode lasers, especially high-power single longitudinal mode fiber lasers with power above 100mW, is increasing. In the field of measurement sensors and video transmission, high-power single longitudinal mode fiber lasers have been more and more widely used. Although kilowatt-level fiber lasers have also been reported, these lasers often operate in the state of multiple longitudinal modes, and the development of high-power single longitudinal mode fiber lasers is not rapid. At the same time, the output power of single longitudinal mode fiber lasers has also encountered a bottleneck. Generally speaking, the output power of single lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/08H01S3/098H01S3/10
Inventor 杨肖璇詹黎黄优
Owner SHANGHAI JIAO TONG UNIV
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