Device for measuring analyzed laser energy output by polarization maintaining optical fiber
A polarization-maintaining optical fiber and laser energy technology, which can be used in measuring devices, optical radiation measurement, photometry, etc., can solve problems such as the inability to eliminate the birefringence of optical fibers
Inactive Publication Date: 2014-08-06
BEIJING GK LASER TECH +1
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Problems solved by technology
[0005] Polarization-maintaining fiber can solve the problem of polarization state change, but it cannot eliminate the birefringence phenomenon in the fiber. Instead, it produces a stronger birefringence effect through the design of the fiber geometry to eliminate the stress on the polarization state of the incident light. Impact
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[0025] According to one embodiment of the present invention, a device for measuring the analyzed laser energy output by a polarization-maintaining fiber is provided, and its three-dimensional structure is as follows figure 1 as shown, figure 2 show figure 1 An exploded schematic of the device shown in , as figure 2 As shown, the device includes:
[0026] The fixed structure 5 is a hollow cylinder with a cavity 6 extending in the axial direction of the cylinder inside, and the cylindrical side wall of the fixed structure 5 has two radially opposite threaded through holes 7;
[0027] A polarization beam splitter prism (PBS) 8 is located at one end of the fixed structure 5, and a screw b is screwed into the threaded through hole 7 and against the polarization beam splitter prism 8, so that the polarization beam splitter prism 8 is fixed in the cavity 6;
[0028] The flange 1 has a plurality of threaded through holes 2 on its edge, and the flange 1 is fixed to the end of the ...
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The invention provides a device for measuring analyzed laser energy output by a polarization maintaining optical fiber. The device comprises a fixing structure, a polarized beam splitter and a flange, wherein the fixing structure is internally provided with a cavity which passes through a first end and a second end of the fixing structure; the polarized beam splitter is located in the cavity at the first end of the fixing structure; the flange is fixed at the second end of the fixing structure; an interface is arranged at the center of one side, opposite to the fixing structure, of the flange and is connected with an interface of the polarization maintaining optical fiber; a bayonet is arranged on the interface of the flange; the direction of the bayonet is the same as that of a bayonet of the polarization maintaining optical fiber; and the direction of the bayonet is the same as the polarization direction of transmission light of the polarized beam splitter.
Description
technical field [0001] The invention relates to a device for measuring the laser energy after polarization analysis output by a polarization maintaining optical fiber. Background technique [0002] Polarization-maintaining optical fiber is a kind of optical fiber that can transmit linearly polarized light. It is widely used in various fields of national economy such as aerospace, aviation, navigation, industrial manufacturing technology and communication. In the interferometric optical fiber sensor based on optical coherent detection, the use of polarization-maintaining optical fiber can ensure that the linear polarization direction remains unchanged, improve the coherent signal-to-noise ratio, and achieve high-precision measurement of physical quantities. As a special optical fiber, polarization maintaining optical fiber is mainly used in optical fiber gyroscopes, optical fiber hydrophones and other sensors and optical fiber communication systems such as DWDM and EDFA. [...
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IPC IPC(8): G01J1/00G01J1/04
Inventor 邱基斯樊仲维唐熊忻
Owner BEIJING GK LASER TECH