Drop-resistant DWDM assembly structure

Abstract

This utility model discloses a drop-resistant DWDM assembly structure, including a reflector assembly, a collimator assembly, and a third glass tube. The reflector assembly consists of a dual-fiber tail, a first lens, a filter, and a first glass tube. The dual-fiber tail and the first lens are coaxially encapsulated in the first glass tube, and the filter is glued to the end of the first lens and the first glass tube. The collimator assembly includes a single-fiber tail, a second lens, and a second glass tube, both coaxially encapsulated in the second glass tube. The reflector and the collimator assembly are connected via the third glass tube and fixed using a suction adhesive process. In the structure, the first and second lenses are G-lens and C-lens collimating lenses, respectively, and are provided with a first gap, a first clearance, and a second clearance. This utility model eliminates suspended sections, optimizes stress distribution, reduces the risk of breakage, and improves impact resistance and structural reliability by encapsulating the dual-fiber tail and lens connection section in the glass tube, using a stepped nesting and suction adhesive process.

Description

Technical Field

[0001] This utility model relates to the field of optical communication technology, specifically to a drop-resistant DWDM assembly structure. Background Technology

[0002] As a core component of optical communication systems, the structural reliability of dense wavelength division multiplexers (DWDM) directly affects network stability.

[0003] In traditional DWDM reflector assembly, a three-section structure is used: the dual-fiber tail is fixed separately in the glass tube, with one end extending out. The extended end is glued to one end of the G-lens collimating lens, and the other end of the G-lens collimating lens is glued to the filter. This results in the G-lens collimating lens forming an independent suspended section. When the device is subjected to drops or vibrations, the end of the dual-fiber tail extending out of the glass tube is prone to breakage, leading to device damage and affecting reliability.

[0004] Therefore, the above problems urgently need to be solved. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a drop-resistant DWDM assembly structure. By completely encapsulating the connection section between the dual-fiber tail and the G-lens collimating lens inside the glass tube, and using a stepped glass tube nesting structure combined with adhesive absorption process, the stress concentration problem caused by drops or vibrations is effectively alleviated, thereby significantly improving the impact resistance and structural reliability of the device.

[0006] Technical Solution: This utility model provides a drop-resistant DWDM assembly structure including a reflector assembly composed of a dual-fiber pigtail, a first lens, a filter, and a first glass tube. The dual-fiber pigtail and the first lens are coaxially encapsulated in the first glass tube. The dual-fiber pigtail is entirely disposed within the first glass tube. One end of the first lens is disposed within the first glass tube, and the other end extends out of the first glass tube. The filter is glued to the end of the first lens extending out of the first glass tube and the end of the first glass tube. A collimator assembly is composed of a single-fiber pigtail, a second lens, and a second glass tube. The single-fiber pigtail and the second lens are coaxially encapsulated in the second glass tube. The single-fiber pigtail is entirely disposed within the second glass tube. One end of the second lens is disposed within the second glass tube, and the other end extends out of the second glass tube. A third glass tube connects the reflector assembly and the collimator assembly. The third glass tube is fitted over the first and second glass tubes and fixed using an adhesive bonding process. The filter is glued to the end of the first glass tube extending from the first lens and the end of the first glass tube. This reduces the risk of breakage at the junction of the dual-fiber tail and the glass tube in the traditional three-section structure, where the dual-fiber tail is glued to one end of the first lens, the other end of the first lens is glued to the filter, and the first glass tube is only fitted with the dual-fiber tail. The first lens and the filter are relatively long compared to the dual-fiber tail, and when there is a drop or vibration, the dual-fiber tail and the glass tube are prone to breakage.

[0007] Furthermore, in a drop-resistant DWDM assembly structure of this application, the first lens is a G-lens collimating lens.

[0008] Furthermore, in one drop-resistant DWDM assembly structure of this application, the second lens is a C-lens collimating lens.

[0009] Furthermore, in one drop-resistant DWDM assembly structure of this application, a first gap is provided between the filter and the second lens inside the third glass tube. The function of the first gap is to provide space for parallel light rays to be transmitted from the reflective end assembly to the collimator assembly.

[0010] Furthermore, in a drop-resistant DWDM assembly structure of this application, a first gap is provided between the inclined surface of the dual-fiber pigtail and the inclined surface of the first lens. This first gap ensures that the end faces do not contact each other, avoiding contact damage and uncontrollable reflections.

[0011] Furthermore, in a drop-resistant DWDM assembly structure of this application, a second gap is provided between the inclined surface of the single-fiber pigtail and the inclined surface of the second lens. This second gap also ensures that the end faces do not contact each other, avoiding contact damage and uncontrollable reflections.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0013] 1. The drop-resistant DWDM assembly structure of this utility model completely encapsulates the connection section between the dual-fiber tail and the G-lens collimating lens within a first glass tube, and simultaneously adhesives the filter to both the end of the G-lens collimating lens and the end of the first glass tube, thus completely eliminating the suspended section of the traditional three-section structure. This structure optimizes stress distribution and effectively reduces the risk of breakage at the joint between the dual-fiber tail and the glass tube during drops or vibrations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a drop-resistant DWDM assembly structure according to the present invention.

[0015] Explanation of reference numerals in the instruction manual:

[0016] 1-Reflector assembly, 11-Dual fiber optic pigtail, 12-First lens, 13-Filter, 14-First glass tube, 15-First gap;

[0017] 2-Collider assembly, 21-Single fiber tail, 22-Second lens, 23-Second glass tube, 24-Second gap;

[0018] 3-Third glass tube. Detailed Implementation

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] like Figure 1 The drop-resistant DWDM assembly structure shown in this utility model includes a reflective end assembly 1, a collimator assembly 2, and a third glass tube 3 connecting the two.

[0022] The encapsulation structure of reflector component 1:

[0023] The dual-fiber pigtail 11 is coaxially packaged with the first lens 12 (G-lens collimating lens) inside the first glass tube 14.

[0024] The dual-fiber tail 11 is placed inside the first glass tube 14, and a first gap 15 (about 0.1 mm) is reserved between its end face bevel and the first lens 12 bevel to avoid end face contact damage.

[0025] One end of the first lens 12 is embedded in the first glass tube 14, and the other end extends slightly out of the tube. The filter 13 is simultaneously bonded to the extended end of the first lens 12 and the end face of the first glass tube 14 with glue to form an integrated support.

[0026] The packaging structure of collimator assembly 2:

[0027] The single-fiber pigtail 21 and the second lens 22 (C-lens collimating lens) are coaxially encapsulated in the second glass tube 23.

[0028] The single-fiber pigtail 21 is placed inside the second glass tube 23, and a second gap 24 (about 0.1 mm) is reserved between its end face bevel and the bevel of the second lens 22 to prevent contact reflection.

[0029] One end of the second lens 22 is embedded in the second glass tube 23, and the other end extends out of the tube.

[0030] Overall connection structure:

[0031] The reflector assembly 1 and the collimator assembly 2 are connected by a third glass tube 3: the third glass tube 3 is sleeved on the extension of the first glass tube 14 and the second glass tube 23, and is fixed by a suction process (heating to soften the colloid and then vacuum adsorption and curing).

[0032] Inside the third glass tube 3, a first gap 31 (approximately 1.5 mm) is provided between the filter 13 and the second lens 22 to provide transmission space for the parallel light path.

[0033] Anti-drop mechanism:

[0034] The connection section between the dual-fiber tail 11 and the first lens 12 is completely built into the first glass tube 14, avoiding the traditional suspended structure.

[0035] The double adhesive bonding of the filter 13 (which is simultaneously fixed to the lens 12 and the glass tube 14) disperses stress.

[0036] The stepped nested structure of the third glass tube 3 achieves seamless connection through a glue absorption process, resulting in uniform stress distribution during drop and significantly reducing the risk of breakage at the junction of the double-fiber tail 11 and the first glass tube 14.

[0037] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An anti-drop DWDM assembly structure, characterized by: include: The reflector assembly (1) consists of a dual-fiber pigtail (11), a first lens (12), a filter (13), and a first glass tube (14). The dual-fiber pigtail (11) and the first lens (12) are coaxially encapsulated in the first glass tube (14). The dual-fiber pigtail (11) is entirely disposed inside the first glass tube (14). One end of the first lens (12) is disposed inside the first glass tube (14), and the other end extends out of the first glass tube (14). The filter (13) is glued together with the end of the first lens (12) extending out of the first glass tube (14) and the end of the first glass tube (14) by adhesive. The collimator assembly (2) consists of a single-fiber tail (21), a second lens (22), and a second glass tube (23). The single-fiber tail (21) and the second lens (22) are coaxially encapsulated in the second glass tube (23). The single-fiber tail (21) is entirely disposed inside the second glass tube (23). One end of the second lens (22) is disposed inside the second glass tube (23), and the other end extends out of the second glass tube (23). The third glass tube (3) connects the reflector assembly (1) and the collimator assembly (2) through the third glass tube (3). The third glass tube (3) is sleeved on the first glass tube (14) and the second glass tube (23) and fixed by adhesive absorption process.

2. The drop-resistant DWDM assembly structure according to claim 1, characterized in that, The first lens (12) is a G-lens collimating lens.

3. The drop-resistant DWDM assembly structure according to claim 1, characterized in that, The second lens (22) is a C-lens collimating lens.

4. The drop-resistant DWDM assembly structure according to claim 1, characterized in that, A first gap (31) is provided between the filter (13) and the second lens (22) inside the third glass tube (3).

5. The drop-resistant DWDM assembly structure according to claim 1, characterized in that, A first gap (15) is provided between the inclined surface of the dual-fiber tail (11) and the inclined surface of the first lens (12).

6. The drop-resistant DWDM assembly structure according to claim 1, characterized in that, A second gap (24) is provided between the inclined surface of the single-fiber tail (21) and the inclined surface of the second lens (22).

Images