A High Power Narrow Linewidth Fully Multimode Pumped Double Clad Fiber Amplifier
A double-clad fiber and narrow linewidth technology, applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problems of high power consumption, low pump utilization, complex drive and control, etc., to improve utilization High efficiency, low noise and high power amplification, easy driving and control
Active Publication Date: 2018-05-25
珠海光恒科技有限公司
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Problems solved by technology
Such a high-power narrow-linewidth double-clad fiber amplifier uses many types of pump lasers, the structure is not compact enough, the drive and control are complicated, and the pump utilization rate is low, resulting in high power consumption.
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[0019] see figure 2 , figure 2 It is a schematic diagram of the structure of the high-power narrow-linewidth fully multi-mode pumped double-clad fiber amplifier of this embodiment. The high-power narrow-linewidth full multi-mode pumped double-clad fiber amplifier of this embodiment includes an optical input end A, a first optical isolator 1, a first wavelength division multiplexer 2, a coupler 10, a core pump unit Mode fiber 3, second optical isolator 4, second wavelength division multiplexer 5, erbium-ytterbium double-clad fiber 6, 940nm pump source 9, beam combiner 7, third wavelength division multiplexer 8, band pass A filter 11, a third isolator 12 and an optical output terminal B.
[0020] The optical input terminal A is connected to the signal input terminal of the first wavelength division multiplexer 2 through the first optical isolator 1 . The signal light is input from the optical input terminal A, and then enters the signal input terminal of the first wavelengt...
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The invention relates to a full multimode pumping double-clad fiber amplifier with high power and narrow line-width. The full multimode pumping double-clad fiber amplifier with high power and narrow line-width comprises an optical input end, a first optical isolator, a first wavelength division multiplexer, a coupler, a fiber core pumping mono-mode fiber, a second optical isolator, a second wavelength division multiplexer, an Er-Yb double-clad fiber, a 940 nm pumping source, a beam combiner, a third wavelength division multiplexer and an optical output end. Signal light is input from the optical input end and enters the first wavelength division multiplexer after passing through the first optical isolator, and then the signal light, together with 1064 nm light generated by the back end, enters the fiber core pumping mono-mode fiber for pre-amplification of the signal light; and the pre-amplified signal light then enters the second wavelength division multiplexer after passing through the second optical isolator, then the signal light, together with the 1064 nm light generated by the back end, enters the Er-Yb double-clad fiber for fiber core transmission, and then the signal light is further amplified and output from the optical output end after passing through the third wavelength division multiplexer. The fiber amplifier can reduce the pumping type, can increase the pumping utilization rate and can realize a compacter structure and lower power consumption.
Description
technical field [0001] The invention relates to the technical field of optical fiber amplifiers, in particular to a high-power narrow-linewidth full multimode pumped double-clad optical fiber amplifier. Background technique [0002] Optical fiber amplifiers generally consist of a signal source, a pump source, a gain medium fiber, an optical isolator and a coupling system. Compared with the conventional fiber, there is an inner cladding layer that can transmit the pump light. The pump light enters the double-clad fiber through the coupling system from one end, and the signal light is coupled into the fiber core at the other end, and finally obtains the amplified laser output. The double-clad fiber amplifier adopts the principle of traveling wave amplification. The rare-earth-doped ions in the fiber core are in the state of particle number inversion under the action of pump light. When the signal light passes through the fiber core, due to the frequency of the signal light and...
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IPC IPC(8): H01S3/067H01S3/091
CPCH01S3/067H01S3/091
Inventor 郭东霞段誉
Owner 珠海光恒科技有限公司