PM Pump Combiner
A beam combiner and polarization-maintaining pump technology, which can be applied to instruments, coupling of optical waveguides, optical guides, etc., can solve problems such as affecting the extinction ratio, and achieve the effect of high pumping efficiency
Inactive Publication Date: 2015-10-28
朗光(常州)信息技术有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a polarization-maintaining pump beam combiner, aiming to solve the problem of affecting the extinction ratio due to mode conversion in the current pump beam combiner made by tapered fusion
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[0011] In order to make the object, technical solution and advantages of the present invention clearer, 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.
[0012] see figure 1 , a polarization-maintaining pump beam combiner provided by an embodiment of the present invention includes a first sleeve 10, in which a double-fiber collimator 20, a filter sheet 30, first angle wedge sheet 40 and single fiber collimator 50.
[0013] The single fiber collimator 50 includes a first collimating lens 51 and a first polarization maintaining fiber 52 . The first polarization-maintaining optical fiber 52 is disposed on a side of the first collimating lens 51 away from the dual-fiber collimator 20 , and is used for transmitting or receiving signal light. When the ...
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The invention is applied to the field of fiber laser devices and provides a polarization-maintaining pump combiner which comprises a first sleeve. A double optical fiber collimator, a filtering piece, a first wedge angle piece and a single optical fiber collimator are sequentially installed in the first sleeve in the axial direction of the first sleeve. The single optical fiber collimator comprises a first collimating lens and a first polarization-maintaining optical fiber for transmitting or receiving signal light. The double optical fiber collimator comprises a second sleeve, a second wedge angle piece, a second collimating lens, a pump optical fiber for transmitting pump light and a double cladding polarization-maintaining optical fiber for correspondingly receiving the signal light transmitted by the first polarization-maintaining optical fiber or transmitting signal light to the first polarization-maintaining optical fiber. One end of the pump optical fiber penetrates through the second sleeve to be inserted in the second wedge angle piece, one end of the double cladding polarization-maintaining optical fiber penetrates through the second sleeve to be inserted in the second wedge angle piece, and the pump optical fiber and the double cladding polarization-maintaining optical fiber are fixedly connected with the second sleeve through curing adhesive. The extinction ratio loss of the signal light in the polarization-maintaining pump combiner is small, and pump efficiency is high.
Description
technical field [0001] The invention belongs to the field of fiber laser devices, in particular to a polarization-maintaining pump beam combiner. Background technique [0002] The laser has the characteristics of high brightness, good collimation, and high energy density. High-energy lasers are widely used in metal cutting, marking, and precision processing of medical devices. Fiber lasers show broad application prospects and huge technical advantages in high-speed and large-capacity wavelength division multiplexing optical fiber communication systems, high-precision optical fiber sensing technology, and high-power lasers. The pumping efficiency of the pump light to the signal light in the fiber laser is one of the keys to realize the high power output of the fiber laser. The beam combiner is an optical device that inputs the pump light and the signal light into the same optical fiber and makes the pump light effective for the signal light. The structure of the optical fi...
Claims
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IPC IPC(8): G02B6/32G02B6/293G02B6/27
Inventor 李泉刘怀亮朱少军李成宽岳超瑜
Owner 朗光(常州)信息技术有限公司