Multi-mode pump laser and optical fiber amplifier formed by same
A pump laser and fiber amplifier technology, applied in the field of communication, can solve the problems of EYDFA, such as large noise, low inversion degree of dopant ions, low overlap factor of pump light and fiber core, etc., to reduce noise index and work work consumption effect
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[0036] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0037] The device of the invention comprises a multi-mode pumping laser tube core and a coupling lens group located in the casing, the laser tail fiber is a double-clad fiber, and a fiber Bragg grating located on the tail fiber. The signal end of the pump signal combiner uses ordinary single-mode fiber, the pump end and common end of the pump signal combiner use double-clad fiber, and the pump end of the pump signal combiner is connected to a multimode pump laser. The common end of the pump signal combiner is connected to a double-clad erbium-ytterbium co-doped fiber (EYDF).
[0038] The shorte...
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