Multi-wavelength fiber laser with switchable channel intervals
A fiber laser and channel spacing technology, which is applied in the field of optical communication, can solve problems such as channel spacing switching filter structure, and achieve the effect of simple structure and low cost
Active Publication Date: 2022-04-08
HANGZHOU DIANZI UNIV
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Problems solved by technology
After searching, there is no filtering structure in the prior art that can switch the channel spacing by switching the working loop of the fiber laser
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[0019] In order to illustrate the embodiments of the present invention more clearly, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.
[0020] Such as figure 1 As shown, a multi-wavelength fiber laser with channel spacing switchable in this embodiment includes a pump source 1, a wavelength division multiplexer 2, an erbium-doped fiber 3, a polarizer 4, a first polarization controller 5-1, a polarization Beam splitter 6, first circulator 7-1, second circulator 7-2, second polarization controller 5-2, first polarization maintaining fiber 8-1, third polarization controller 5-3, second Polarization maintaining fiber 8-2, coupler 9, fourth polarization controll...
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The invention relates to a multi-wavelength fiber laser with switchable channel intervals, which is characterized in that a pumping source is connected with a first port of a wavelength division multiplexer, and a second port of the wavelength division multiplexer, an erbium-doped fiber, a polarizer, a first polarization controller and a first port of a polarization beam splitter are sequentially connected; two output ports of the polarization beam splitter are respectively connected with a second port of the first circulator and a second port of the second circulator; the third port of the first circulator, the second polarization controller, the first polarization maintaining optical fiber and the first port of the second circulator are connected in sequence; a first port of the first circulator, a third polarization controller, a second polarization maintaining optical fiber and a third port of the second circulator are connected in sequence; the third port of the wavelength division multiplexer is connected with the first port of the coupler, and the third port of the coupler, the single-mode fiber, the fourth polarization controller and the fourth port of the coupler are connected in sequence. According to the invention, the switching of two working loops can be realized, so that the switching of channel intervals is realized.
Description
technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a multi-wavelength fiber laser with switchable channel spacing. Background technique [0002] Multi-wavelength fiber lasers can generate a variety of multi-wavelengths with constant output intervals with only one laser, and can be naturally integrated into optical fiber communication systems. Ideal for system lighting. In addition, it also has very high research value in the fields of optical fiber sensing, optical instrument testing, microwave photonics and so on. Common multi-wavelength fiber lasers correspond to fixed channel spacing, which cannot meet the tunable requirements in some practical applications. In order to make the laser more flexible and practical, those skilled in the art turned their attention to the research of multi-wavelength fiber lasers with switchable channel spacing. [0003] The key to realizing a multi-wavelength fiber las...
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IPC IPC(8): H01S3/067H01S3/10
Inventor 忻伶怡周雪芳陈健兰祁河新
Owner HANGZHOU DIANZI UNIV