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Multi-wavelength fiber laser with tunable wavelength intervals

A fiber laser and wavelength spacing technology, applied in the field of optical communication, can solve the problems of poor wavelength spacing tunability, poor stability of multi-wavelength output, etc., and achieve the effects of good stability, compact structure and narrow line width.

Active Publication Date: 2015-11-11
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of poor multi-wavelength output stability and poor wavelength interval tunability of current multi-wavelength fiber lasers, the present invention discloses a multi-wavelength fiber laser with tunable wavelength intervals, which can realize single-fold Brillouin frequency Shift wavelength interval, double Brillouin shift wavelength interval and triple Brillouin shift wavelength interval

Method used

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  • Multi-wavelength fiber laser with tunable wavelength intervals
  • Multi-wavelength fiber laser with tunable wavelength intervals
  • Multi-wavelength fiber laser with tunable wavelength intervals

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Embodiment 1

[0031] Such as figure 1 As shown, the multi-wavelength fiber laser with tunable wavelength interval of this embodiment includes a tunable light source 1, an optical coupler 2, a first optical wavelength division multiplexer 3-1, a first pump laser 4-1, and an erbium-doped fiber 5. -1, the first optical circulator 6-1, the first optical circulator 6-2, the single-mode fiber 7-1, the four-port optical circulator 8, the erbium-doped fiber 5-2, the single-mode fiber 7-2, the first The two wavelength division multiplexer 3-2, the second pump source 4-2 and the spectrometer 9, and the gain range of the erbium-doped fibers 5-1 and 5-2 are 1530nm to 1570nm. The working range of the optical coupler 2 is 1530 nm to 1580 nm, and the port d of the optical coupler 2 serves as a laser output port.

[0032] This embodiment is a multi-wavelength fiber laser with a triple Brillouin frequency shift interval. The connection mode of each device is as follows: the tunable light source 1 and the first...

Embodiment 2

[0037] Such as figure 2 As shown, this embodiment is a multi-wavelength fiber laser with a single Brillouin frequency shift interval. The connection mode of each device is: the tunable light source 1 and the first port a of the optical coupler 2 are connected through an optical fiber, and the optical coupler 2 The third port c of the optical fiber is connected to the e port of the first wavelength division multiplexer 3-1 through an optical fiber, and the second port b of the optical coupler 2 is connected to the port j of the first optical circulator 6-1 through an optical fiber; The g port of the optical wavelength division multiplexer 3-1 is connected to one end of the first erbium-doped fiber 5-1, and the port f of the first optical wavelength division multiplexer 3-1 is connected to the first pump laser 4-1 through an optical fiber, The other end of the first erbium-doped fiber 5-1 is connected to the port h of the first optical circulator 6-1; the port i of the first opti...

Embodiment 3

[0039] Such as image 3 As shown, this embodiment is a multi-wavelength fiber laser with a double Brillouin frequency shift interval. The connection mode of each device is: the tunable light source 1 and the first port a of the optical coupler 2 are connected by optical fiber, and the optical coupler 2 The third port c of the four-port optical circulator 8 is connected with the n port of the four-port optical circulator 8 through an optical fiber, and the second port b of the optical coupler 2 is connected with the q port of the four-port optical circulator 8 through an optical fiber. The port is connected to one end of the second single-mode fiber 7-2, the other end of the second single-mode fiber 7-2 is connected to the erbium-doped fiber 5-2, and the other end of the second erbium-doped fiber 5-2 is connected to the second optical wavelength division multiplexing The port r of the second optical wavelength division multiplexer 3-2, the port s of the second optical wavelength ...

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Abstract

The invention discloses a multi-wavelength fiber laser with tunable wavelength intervals. The multi-wavelength fiber laser comprises a tunable light source (1), an optical coupler (2) and a spectrograph (9), wherein the tunable light source (1) is connected with a first port (a) of the optical coupler (2) through an optical fiber; a third port (c) of the optical coupler (2) penetrates through a linear cavity I or an annular cavity II or the linear cavity I and the annular cavity II and then is connected with a second port (b) through the optical fiber; and a fourth port (d) of the optical coupler (2) is connected with the spectrograph (9) through the optical fiber. According to the multi-wavelength fiber laser, a single-fold brillouin frequency shift wavelength interval, a dual-fold brillouin frequency shift wavelength interval and a three-fold brillouin frequency shift wavelength interval can be realized.

Description

Technical field [0001] The invention belongs to the field of optical communication technology, and specifically relates to a multi-wavelength fiber laser with a tunable wavelength interval based on Brillouin scattering, which can realize laser output with wavelength intervals of 0.082nm, 0.164nm and 0.246nm. Background technique [0002] Multi-wavelength fiber lasers have very important applications in technical fields such as optical communication systems, optical fiber sensing, spectrum analysis, microwave signal sources and THz source generation, and have always received the attention of the majority of scientific and technological workers and major laser manufacturers. The dense wavelength division multiplexing technology in the communication field greatly improves the communication capacity, and uses fiber lasers to generate microwave signal sources through beat frequency technology. Multi-wavelength lasers are indispensable equipment. At present, there are many types of mul...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/10H01S3/30
Inventor 周雪芳刘亚庆魏一振毕美华胡淼李齐良
Owner HANGZHOU DIANZI UNIV
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