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A method and device for cleaning the surface of optical fiber secondary multifilament
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An optical fiber and surface cleaning technology, applied in the direction of bundle optical fibers, etc., can solve the problems of easy leakage of pollution sources, adhesion to the surface of multifilaments, damage, etc., to eliminate surface pollution, improve the quality of mesh and chicken wire, The effect of improving optical performance
Active Publication Date: 2017-06-16
中建材光芯科技有限公司
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In order to avoid damage to the surface of the secondary multifilament, these two methods are very gentle, and some pollution sources are easy to miss or adhere to the surface of the multifilament, which is difficult to remove. It is carried out before the board, and the new pollution points caused by the second multi-filament friction during the board arrangement process cannot be treated
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Embodiment 1
[0055] see figure 1 , a method for cleaning the surface of an optical fiber secondary multifilament of the present invention comprises the following steps:
[0056] (1) Precisely arrange the secondary multifilament 6 of the optical fiber into the precisely shaped glass tube 5. The glass tube used is shaped into an inner hexagonal glass tube under high temperature conditions by using a stainless steel rod (coated with boron nitride solution on the periphery), and close one end.
[0057] (2) The open end of the glass tube 5 is connected to a five-way pipe through a flange;
[0058] (3) First close the first valve 2, the third valve 3, and the fourth valve 4, open the second valve 1, and use the vacuum system to evacuate to 10 -6 Pa, under the condition of continuous vacuuming, the temperature is raised to 530°C, then the second valve 1 is closed, and the vacuuming is stopped;
[0059](4) Open the fourth valve 4, feed high-purity oxygen to 0.15MPa after drying, carry out ablat...
Embodiment 2
[0065] Substantially the same as Example 1, the difference is that the vacuum system is evacuated to 10 each time. -5 Pa, in step (3), under the condition of continuous vacuuming, heat up to 500°C, in step (4), feed high-purity oxygen to 0.1MPa after drying, keep warm for 30 minutes, in step (5), feed After drying, high-purity inert gas nitrogen to 0.2MPa.
Embodiment 3
[0067] Substantially the same as Example 1, the difference is that the vacuum system is evacuated to 10 each time. -4 Pa, under the condition of continuous vacuuming, the temperature is raised to 550°C. In step (4), the dried high-purity oxygen is introduced to 0.2MPa, and the temperature is kept for 90 minutes. In step (5), the dried high-purity inert gas is introduced. Nitrogen to 0.1MPa.
[0068] The method for cleaning the surface of the secondary multifilament of the optical fiber of the present invention further eliminates the surface pollution of the secondary multifilament on the basis of existing cleaning, and improves the optical performance of the interface of the secondary multifilament of the optical fiber panel.
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Abstract
The invention discloses a method for cleaning the surface of optical fiber secondary multifilament and a device of the method. The method comprises the steps that (1), the optical fiber secondary multifilament is arranged into a glass tube, and vacuumizing is carried out; (2), on the condition of continuing vacuumizing, temperature is raised, and then vacuumizing is stopped; (3), oxygen is injected into the glass tube, pollutants on the surface of the optical fiber secondary multifilament are ablated, after heat is preserved, the oxygen is pumped out, and then inert gas is injected; (4), the glass tube continues to be vacuumized, and is sealed under the vacuum state. The device comprises the glass tube. A heating body is arranged outside the glass tube. The open end of the glass tube is connected with a first pipeline. The first pipeline is connected with a first valve and a second valve. The first valve is connected with an air discharging pipe and communicated with atmosphere. The device for cleaning the surface of the optical fiber secondary multifilament is utilized for cleaning the surface of the optical fiber secondary multifilament at a certain temperature, so that contamination to the surface of the optical fiber secondary multifilament is eliminated, and the interface optical performance of the secondary multifilament of an optical fiber panel is improved.
Description
technical field [0001] The invention relates to the field of manufacturing optical fiber image transmission components, in particular to a method and a device for cleaning the surface of an optical fiber secondary multifilament. Background technique [0002] Optical fiber image transmission components include fiber optic panels, fiber optic image inverters, fiber optic cones, etc., which have the advantages of simple structure, small size, large numerical aperture, high light transmission efficiency, small inter-stage coupling loss, clear and real image transmission, and are optically It has the characteristics of zero thickness and can improve the edge image quality. It is a high-resolution image transmission element formed by melting and pressing tens of millions of parallel optical fibers. The most typical application is as the optical input and output windows of the low-light image intensifier, which plays an important role in improving the quality of imaging devices, an...
Claims
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