Sealing optical fiber device at low temperature
A sealing device and optical fiber technology, which is applied to the coupling of optical waveguides and other directions, can solve the problems of reduced sealing performance, high cost, and small number of sealed optical fibers, and achieve the effects of simple sealing structure, simple method and low cost.
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[0014] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0015] Such as figure 1 As shown, the outer surface of the optical fiber 1 is coated with a metal layer 2 by magnetron sputtering. The thickness of the metal layer 2 is 0.5mm-1mm, and the length of the metal layer 2 is greater than the height of the fiber sealing hole of the sealing flange by 10mm -15mm.
[0016] Such as figure 2 As shown, the center of the sealing flange 3 is provided with an optical fiber sealing hole 4, and a sealing groove 5 is provided on the lower end surface. The sealing flange 3 is made of stainless steel, and the sealing groove 5 has a width of 0.5-0.7 mm and a depth of 0.4-0.6 mm. After the optical fiber sealing hole 4 is sealed, fill the sealing groove 5 of the optical fiber flange with metal indium wire, press the sealing flange 3 on the sealing port of the low-temperature container with screws, and use the ductility of the metal ...
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