CN213715523U

CN213715523U - Dense wavelength division multiplexing device

Info

Publication number: CN213715523U
Application number: CN202022772511.9U
Authority: CN
Inventors: 刘俞靖; 刘增光; 吴利敏; 段伟
Original assignee: Shandong Rayzer Optical Technology Co ltd
Current assignee: Shandong Rayzer Optical Technology Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-07-16
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a dense wavelength division multiplexing device, include: sequentially coupling and bonding the non-coated interval optical fiber head, the first non-coated G lens, the coated DWDM filter, the second non-coated G lens and the non-coated single optical fiber head through optical path coupling glue; the antireflection film is formed after light path coupling glue between the uncoated pitch fiber head and the first uncoated G lens, between the first uncoated G lens and the coated DWDM filter, between the coated DWDM filter and the second uncoated G lens, and between the second uncoated G lens and the uncoated single fiber head is cured; the end faces, close to each other, of the uncoated pitch fiber heads, the first uncoated G lens, the second uncoated G lens and the uncoated single fiber head are inclined surfaces of 8 degrees and are parallel to each other, and the end faces, close to each other, of the first uncoated G lens, the coated DWDM filter and the second uncoated G lens are straight planes. The utility model discloses simple structure, with low costs have good market competition.

Description

Dense wavelength division multiplexing device

Technical Field

The utility model belongs to the technical field of dense wavelength division multiplexing, more specifically relates to a dense wavelength division multiplexing device.

Background

Dense Wavelength Division Multiplexing (DWDM) devices are one of the fundamental components of optical communication equipment, and their cost is directly related to the cost of the base station of the operator. In order to ensure that the Insertion Loss (IL) of the device is as small as possible, an antireflection film for antireflection is arranged on an optical path part in the DWDM device, at present, various device manufacturers mostly use coating materials, and the device is assembled by coupling an optical path glue-free process (the DWDM device is formed by sleeving an optical path coupling part by three glass tubes).

Disclosure of Invention

To the above defects or the improvement requirements of the prior art, the utility model provides a dense wavelength division multiplexing device.

In order to achieve the above object, the present invention discloses an intensive wavelength division multiplexing device, including:

sequentially coupling and bonding the non-coated interval optical fiber head, the first non-coated G lens, the coated DWDM filter, the second non-coated G lens and the non-coated single optical fiber head through optical path coupling glue; the optical path coupling glue between the optical fiber head with the uncoated pitch and the first uncoated G lens, between the first uncoated G lens and the coated DWDM filter, between the coated DWDM filter and the second uncoated G lens, and between the second uncoated G lens and the uncoated single optical fiber head is cured to form an antireflection film; the end faces, close to each other, of the uncoated G optical fiber heads, the first uncoated G lens, the second uncoated G lens and the uncoated single optical fiber head are inclined surfaces of 8 degrees and are parallel to each other, and the end faces, close to each other, of the first uncoated G lens, the coated DWDM filter and the second uncoated G lens are straight planes.

Optionally, the uncoated pitch fiber head, the first uncoated G lens, the second uncoated G lens and the uncoated single fiber head have the same outer diameter.

Optionally, the coated DWDM filter has an outer diameter smaller than the first uncoated G lens.

Optionally, the optical path coupling glue arranged between the optical fiber head with the uncoated pitch and the first uncoated G lens has the same outer diameter size as the optical fiber head with the uncoated pitch and the first uncoated G lens; the optical path coupling glue arranged between the second uncoated G lens and the uncoated single optical fiber head has the same outer diameter size as the second uncoated G lens and the uncoated single optical fiber head; the optical path coupling glue arranged between the first uncoated G lens and the coated DWDM filter is the same as the coated DWDM filter in outer diameter size; and the optical path coupling glue arranged between the second uncoated G lens and the coated DWDM filter is the same as the coated DWDM filter in outer diameter size.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:

the Dense Wavelength Division Multiplexing (DWDM) device consists of an uncoated space fiber head, two uncoated G lenses (a first uncoated G lens and a second uncoated G lens), an uncoated single fiber head and a coated DWDM filter plate assembly, wherein the assemblies are bonded by optical path coupling glue, and the optical path coupling glue between the assemblies can be used as an antireflection film after being cured, so that the production and the manufacture of the Dense Wavelength Division Multiplexing (DWDM) device with glue on an optical path are realized.

In the utility model, except the DWDM filter plate which is a coated part, other components are non-coated parts, and the light path coupling glue is used for coupling and bonding at each end face, so that the light path coupling glue can play the role of an antireflection film while fixing two adjacent components, thereby ensuring that the Insertion Loss (IL) of the device is as small as possible and ensuring the stability of the light path; simultaneously, contrast traditional light path does not have gluey DWDM device, the utility model discloses few used three glass pipe (reflection core glass pipe, collimator glass pipe, the big glass pipe of transmission coupling), saved partly material ((anti-reflection coating) and labour cost again, finally, this DWDM uses the debugging coupling that a set of three-dimensional alignment jig can realize whole device, has saved one set of debugging equipment in other words, just the utility model discloses compact structure, space occupancy are little (for the linear structure that radial dimension is littleer), the preparation is convenient, easily realize and with low costs, have good market competition and commercial value.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In all the figures, the same reference numerals denote the same features, in particular: 1-optical fiber head with non-coating interval, 2-first lens without coating G, 3-coating DWDM filter, 4-second lens without coating G, 5-single optical fiber head without coating and 6-antireflection coating.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

The utility model discloses a dense wavelength division multiplexing device, include: the optical fiber head 1 with the interval of no coating film, the first G lens 2 without coating film, the DWDM filter 3 with the coating film, the second G lens 4 without coating film and the single optical fiber head 5 without coating film are coupled and bonded in sequence through the optical path coupling adhesive; the optical path coupling glue between the optical fiber head 1 with the uncoated pitch and the first uncoated G lens 2 is cured to form an antireflection film 6, the optical path coupling glue between the first uncoated G lens 2 and the coated DWDM filter 3 is cured to form an antireflection film 6, the optical path coupling glue between the coated DWDM filter 3 and the second uncoated G lens 4 is cured to form an antireflection film 6, and the optical path coupling glue between the second uncoated G lens 4 and the uncoated single optical fiber head 5 is cured to form an antireflection film 6; the end faces, close to each other, of the uncoated-film-space optical fiber head 1, the first uncoated-film G lens 2, the second uncoated-film G lens 4 and the uncoated-film single optical fiber head 5 are inclined surfaces of 8 degrees and are parallel to each other, and the end faces, close to each other, of the first uncoated-film G lens 2, the coated-film DWDM filter 3 and the second uncoated-film G lens 4 are straight planes.

The utility model discloses for traditional light path does not have gluey intensive wavelength division multiplexing (DWDM) device, the advantage is huge in the aspect of the cost, other subassemblies (not coating film interval fiber optic head 1, first not coating film G lens 2, not coating film G lens 4 of second and not coating film single fiber optic head 5) except that the DWDM filter is the coating film spare are not the coating film spare, reduce and use three glass pipe, reduced the process (need not the coating film process) in the time of reducing material cost, and debugging equipment is simple, single device can save the cost and reach more than 10%, to the device producer, can improve market competition greatly, good market prospect has.

Optionally, the outside diameters of the uncoated pitch optical fiber head 1, the first uncoated G lens 2, the second uncoated G lens 4 and the uncoated single optical fiber head 5 are the same; the coated DWDM filter 3 has an outer diameter smaller than that of the first uncoated G lens 2. It is worth to be noted that the outer diameter of each component has no special requirements, and is a universal size in the industry, and the size of the component does not affect the performance of the device, wherein the cross sections of the optical fiber heads (the non-coating interval optical fiber head 1 and the non-coating single optical fiber head 5) and the lenses (the first non-coating G lens 2 and the second non-coating G lens 4) are circular, and the diameter of the optical fiber heads is 1.8 mm; the coated DWDM filter 3 is a cuboid, and generally has the size of 1.2 × 1.0mm in length, 1.4 × 1.0mm in height or 1.0 × 1.0 in length, wherein the height of the coated DWDM filter 3 is the axial direction of the device.

Optionally, the outer peripheral wall of the optical path coupling adhesive and the outer peripheral wall of the component arranged adjacent to the optical path coupling adhesive are arranged in a flush manner (certainly, the optical path coupling adhesive may not be arranged in a flush manner in actual production, and is in a liquid state when not cured, the optical path coupling adhesive is slightly extruded by the end surfaces of the two adjacent components when debugging is performed after dispensing, and certainly, the extruded optical path coupling adhesive does not need to be removed until the optical path coupling adhesive is cured or removed before the optical path coupling adhesive is cured to ensure that the outer side walls of the optical path coupling adhesive are smoothly arranged), so that the optical path coupling adhesive arranged between the optical fiber head 1 with the non-coating distance and the first non-coating G lens 2 is ensured to be the same as the outer diameter sizes of the optical fiber head 1 with the non-coating distance and the; the optical path coupling glue arranged between the second uncoated G lens 4 and the uncoated single optical fiber head 5 has the same outer diameter size as the second uncoated G lens 4 and the uncoated single optical fiber head 5; the optical path coupling glue arranged between the first uncoated G lens 2 and the coated DWDM filter 3 has the same size as the outer diameter of the coated DWDM filter 3; the optical path coupling glue arranged between the second uncoated G lens 4 and the coated DWDM filter 3 has the same size as the outer diameter of the coated DWDM filter 3; when the outer diameter size of two subassemblies of optical path coupling glue adhesion is different promptly, then the outer diameter size of optical path coupling glue is preferred the same with the subassembly that the outer diameter size is little, has guaranteed the outside roughness and the pleasing to the eye of whole DWDM device like this, improves the aesthetic feeling of whole DWDM device, further improves market competition. It is worth explaining that the two components adhered by the optical path coupling glue can be automatically separated after being processed by special medicament, thereby realizing the recycling of each component and further reducing the cost of the dense wavelength division multiplexing device.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. A dense wavelength division multiplexing device, comprising: sequentially coupling and bonding the non-coated interval optical fiber head, the first non-coated G lens, the coated DWDM filter, the second non-coated G lens and the non-coated single optical fiber head through optical path coupling glue; the optical path coupling glue between the optical fiber head with the uncoated pitch and the first uncoated G lens, between the first uncoated G lens and the coated DWDM filter, between the coated DWDM filter and the second uncoated G lens, and between the second uncoated G lens and the uncoated single optical fiber head is cured to form an antireflection film; the end faces, close to each other, of the uncoated G optical fiber heads, the first uncoated G lens, the second uncoated G lens and the uncoated single optical fiber head are inclined surfaces of 8 degrees and are parallel to each other, and the end faces, close to each other, of the first uncoated G lens, the coated DWDM filter and the second uncoated G lens are straight planes.

2. The dwdm device of claim 1, wherein: the outer diameter sizes of the uncoated pitch optical fiber head, the first uncoated G lens, the second uncoated G lens and the uncoated single optical fiber head are the same.

3. The dwdm device of claim 1, wherein: the outer diameter of the coated DWDM filter is smaller than that of the first uncoated G lens.

4. The dense wavelength division multiplexing device according to any one of claims 1 to 3, wherein:

the optical path coupling glue arranged between the optical fiber head with the non-coating interval and the first G lens without coating has the same outer diameter size as the optical fiber head with the non-coating interval and the first G lens without coating;

the optical path coupling glue arranged between the second uncoated G lens and the uncoated single optical fiber head has the same outer diameter size as the second uncoated G lens and the uncoated single optical fiber head;

the optical path coupling glue arranged between the first uncoated G lens and the coated DWDM filter is the same as the coated DWDM filter in outer diameter size;

and the optical path coupling glue arranged between the second uncoated G lens and the coated DWDM filter is the same as the coated DWDM filter in outer diameter size.