CN-115524798-B - Tensile packaging device of optical fiber coupler

CN115524798BCN 115524798 BCN115524798 BCN 115524798BCN-115524798-B

Abstract

The invention discloses an optical fiber coupler tensile packaging device which comprises an optical fiber coupling component, a coupler outer shell, an input optical fiber, an output optical fiber, an input optical fiber protection device and an output optical fiber protection device, wherein the optical fiber coupling component is arranged in the coupler outer shell, one end of the input optical fiber is arranged in the input optical fiber protection device, the other end of the input optical fiber is connected with the optical fiber coupling component, one end of the output optical fiber is arranged in the output optical fiber protection device, and the other end of the output optical fiber is connected with the optical fiber coupling component. The invention effectively enhances the environmental adaptability of the optical fiber coupler and has the advantages of moisture resistance, pollution resistance, corrosion resistance, mechanical damage resistance, strong tensile strength and good temperature resistance.

Inventors

LI XIN
GAN JUNNING
WANG ZIWEN
YANG JINMEI
HAO SHUAI
QI CONGRUI

Assignees

中国航天时代电子有限公司

Dates

Publication Date: 20260505
Application Date: 20220830

Claims (5)

1. The tensile packaging device of the optical fiber coupler is characterized by comprising an optical fiber coupling assembly (1), a coupler outer shell (2), an input optical fiber (9), an output optical fiber (10), an input optical fiber protection device and an output optical fiber protection device, wherein, The optical fiber coupling assembly (1) is arranged in the coupler outer shell (2); One end of the input optical fiber (9) is arranged in the input optical fiber protection device, and the other end of the input optical fiber (9) is connected with the optical fiber coupling assembly (1); one end of the output optical fiber (10) is arranged in the output optical fiber protection device, and the other end of the output optical fiber (10) is connected with the optical fiber coupling assembly (1); the input optical fiber protection device and the output optical fiber protection device have the same structure and comprise an optical cable fixing column (3), an optical cable fixing pressing sleeve (4), an optical cable fixing pressing ring (5), an optical cable sheath (6), an optical cable protection tail sleeve (7) and an optical cable inner sheath (13), One end of the optical cable fixing column (3) is connected with the coupler outer shell (2); the optical cable inner sheath (13) is sleeved on the outer surface of the output optical fiber or the input optical fiber; the optical cable inner sheath (13) is arranged in the inner cavity of the optical cable fixing column (3) and the inner cavity of the optical cable sheath (6); The part of the optical cable sheath (6) is sleeved on the outer surface of the other end of the optical cable fixing column (3); the optical cable fixing wire pressing sleeve (4) is sleeved on the outer surface of the optical cable sheath (6); The optical cable fixing wire pressing ring (5) is sleeved on the outer surface of the optical cable sheath (6), and the optical cable fixing wire pressing ring (5) is used for pressing the optical cable sheath (6) and the optical cable fixing wire pressing sleeve (4); The optical cable protection tail sleeve (7) is sleeved on the outer surface of the optical cable sheath (6); the cable sheath (6) comprises a cable strengthening element (14) and a cable outer sheath (15), wherein, Part of the optical cable reinforcing element (14) is sleeved on the outer surface of the other end of the optical cable fixing column (3), and the rest part of the optical cable reinforcing element (14) is sleeved on the outer surface of the optical cable inner sheath (13); One end of the optical cable fixing wire pressing sleeve (4) is sleeved on the outer surface of the optical cable reinforcing element (14); Part of the optical cable outer sheath (15) is sleeved on the outer surface of the optical cable fixing and pressing sleeve (4), and the rest part of the optical cable outer sheath (15) is sleeved on the outer surface of the optical cable reinforcing element (14); the optical cable fixing wire compression ring (5) is sleeved on the outer surface of the part of the optical cable outer sheath (15); The cable fixing pole forms a compression joint surface with the cable inner sheath, the cable reinforcing element forms a compression joint surface with the cable fixing pole, the cable fixing pressing sleeve forms a compression joint surface with the cable reinforcing element, the cable fixing pressing ring forms a compression joint surface with the cable fixing pressing sleeve, the cable outer sheath forms a compression joint surface with the cable fixing pressing ring, the cable protection tail sleeve forms a compression joint surface with the cable outer sheath, thereby forming 6 compression joint surfaces when the cable inner sheath is compressed, so the acting force applied to the cable inner sheath has the following constraint relation: ; Wherein, the For the force applied to the cable inner jacket, μ is the coefficient of friction, τ is the shear strength, a is the single crimp face cross-sectional area; the optical fiber coupling component (1) comprises an optical fiber coupling region (8), a quartz substrate (11) and a protective sleeve (12), The quartz substrate (11) is arranged in the protective sleeve (12); The optical fiber coupling region (8) is arranged in the quartz substrate (11); the input optical fiber (9) is connected with the optical fiber coupling area (8), and the output optical fiber (10) is connected with the optical fiber coupling area (8); the coupler outer shell (2) comprises an upper lobe structure and a lower lobe structure, wherein, The upper valve structure is connected with the lower valve structure; the inner cavity formed by the upper valve structure and the lower valve structure is used for arranging the optical fiber coupling component (1); the two ends of the coupler outer shell (2) are provided with optical cable fixing column mounting clamping grooves, and one end of the optical cable fixing column (3) is arranged in the optical cable fixing column mounting clamping grooves; the optical cable sheath and the optical cable fixing column are fixed through the optical cable fixing sleeve and the optical cable fixing compression ring, wherein the optical cable sheath comprises an optical cable reinforcing element and an optical cable outer sheath, the optical cable reinforcing element is fixedly connected to the optical cable fixing column through the optical cable fixing sleeve in a compression manner, and the optical cable outer sheath is fixedly connected to the optical cable fixing compression sleeve through the optical cable fixing compression ring in a compression manner, so that the optical cable outer sheath is used as an outer layer protection structure of an input optical fiber and an output optical fiber outside the optical fiber coupler shell; the crimping part of the optical cable sheath and the optical cable fixing column is protected by an optical cable protecting tail sleeve, and when the optical cable is bent, the optical cable protecting tail sleeve can release bending stress to prevent light transmission from being affected; The crimped optical cable sheath is sleeved on the input optical fiber and the output optical fiber, and the positions of the optical cable sheath and the optical cable sheath are fixed in the installation clamping grooves of the coupler outer shell through the optical cable fixing post.
2. The optical fiber coupler tensile packaging device according to claim 1, wherein the optical cable inner sheath (13) is arranged in the inner cavity of the optical cable fixing post (3) and the inner cavity of the optical cable sheath (6) through an adhesive.
3. The optical fiber coupler tensile packaging device according to claim 2, wherein the material of the adhesive has a thermal expansion coefficient equal to that of the input optical fiber (9) or the output optical fiber (10).
4. The fiber optic coupler tensile packaging device of claim 1, wherein the upper lobe structure and the lower lobe structure are threadably connected.
5. The optical fiber coupler tensile packaging device according to claim 1, wherein the number of the input optical fibers is an integer not less than 1, and the number of the output optical fibers is an integer not less than 1.

Description

Tensile packaging device of optical fiber coupler Technical Field The invention belongs to the technical field of optical fiber couplers, and particularly relates to a tensile packaging device of an optical fiber coupler. Background The optical fiber coupler generally adopts a fused biconical taper or planar waveguide mode according to the principle, and light branching distribution is realized through side fusion of two or more optical fibers or semiconductor optical waveguides, so that the optical fiber coupler is a key device in the field of optical fiber communication, and the application environment of the optical fiber coupler has high requirements on the reliability of the device. After the fusion tapering of the optical fiber or the coupling of the optical fiber and the optical waveguide is finished, the optical fiber coupler needs to be packaged and protected, and the stability of the performance parameters of the optical fiber coupler and the reliability of long-term use are ensured. There are many methods for protecting the package of the optical fiber coupling region in the prior art, but there are few references for protecting the input/output optical fibers at two ends and improving the overall tensile capacity of the device. The traditional external packaging of the optical fiber coupler adopts a mode of directly bonding an optical cable and a shell, and the adhesive is filled at the joint of the optical fiber coupler shell and the optical cable, so that the protection of the optical fiber and the fixation of the optical fiber coupler are realized. The optical fiber coupler bonded by the adhesive is easy to fall off under a severe mechanical environment, the tensile strength is difficult to ensure, the adhesive has the problem of aging failure, and the service life of the optical fiber coupler cannot be ensured. Disclosure of Invention The invention solves the technical problems of overcoming the defects of the prior art, providing the tensile packaging device of the optical fiber coupler, effectively enhancing the environmental adaptability of the optical fiber coupler, and having the advantages of moisture resistance, pollution resistance, corrosion resistance, mechanical damage resistance, strong tensile resistance and good temperature resistance. The optical fiber coupler tensile packaging device comprises an optical fiber coupling component, a coupler outer shell, an input optical fiber, an output optical fiber, an input optical fiber protection device and an output optical fiber protection device, wherein the optical fiber coupling component is arranged in the coupler outer shell, one end of the input optical fiber is arranged in the input optical fiber protection device, the other end of the input optical fiber is connected with the optical fiber coupling component, one end of the output optical fiber is arranged in the output optical fiber protection device, and the other end of the output optical fiber is connected with the optical fiber coupling component. The tensile packaging device for the optical fiber coupler is characterized in that the input optical fiber protection device and the output optical fiber protection device are identical in structure and comprise an optical cable fixing column, an optical cable fixing pressing sleeve, an optical cable fixing pressing ring, an optical cable jacket, an optical cable protection tail sleeve and an optical cable inner jacket, wherein one end of the optical cable fixing column is connected with the coupler shell, the optical cable inner jacket is sleeved on the outer surface of the output optical fiber or the input optical fiber, the optical cable inner jacket is arranged in an inner cavity of the optical cable fixing column and an inner cavity of the optical cable jacket, a part of the optical cable jacket is sleeved on the outer surface of the other end of the optical cable fixing column, the optical cable fixing pressing sleeve is sleeved on the outer surface of the optical cable jacket, the optical cable fixing pressing ring is sleeved on the outer surface of the optical cable jacket and used for pressing the optical cable jacket and the optical cable fixing pressing sleeve, and the optical cable protection tail sleeve is sleeved on the outer surface of the optical cable jacket. In the optical fiber coupler tensile packaging device, the optical cable jacket comprises an optical cable reinforcing element and an optical cable outer jacket, wherein a part of the optical cable reinforcing element is sleeved on the outer surface of the other end of the optical cable fixing post, the rest of the optical cable reinforcing element is sleeved on the outer surface of the optical cable inner jacket, one end of the optical cable fixing pressing sleeve is sleeved on the outer surface of the optical cable reinforcing element, a part of the optical cable outer jacket is sleeved on the outer surface of the optical cable fixing pressing sleeve, the