CN219957913U - Optical waveguide combiner, optical cable splitting box and optical transmission network - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of optical fiber communication, and discloses an optical waveguide combiner, an optical cable fiber distribution box and an optical transmission network, wherein the optical waveguide combiner comprises: the hollow steel pipe body, two steel caps, a plurality of loose tail fibers and a wavelength division pipe arranged in the steel pipe body; the openings at the two ends of the steel pipe body are respectively connected with two steel caps; the openings at the two ends of the steel pipe body are of an up-down step structure; the two steel caps respectively comprise a step-type connection structure connected with openings at two ends of the steel pipe body; the upper steps with openings at two ends are connected with the lower steps of the step-type connecting structure; the outer diameter of the lower step of the step-type connecting structure is smaller than the inner diameter of the upper step with openings at two ends, and the outer diameter of the upper step of the step-type connecting structure is larger than or equal to the outer diameter of the openings at two ends; through holes are respectively arranged on the two steel caps; one end of each loose tail fiber passes through the through hole of the steel cap and is connected with the wavelength division tube. Through the mode, the embodiment of the utility model provides the optical waveguide combiner with a simple and reliable packaging structure.

Description

Optical waveguide combiner, optical cable splitting box and optical transmission network

Technical Field

The embodiment of the utility model relates to the technical field of optical fiber communication, in particular to an optical waveguide combiner, an optical cable splitting box and an optical transmission network.

Background

Wavelength division multiplexing (Wavelength Division Multiplexing, WDM) is a communication technology in which a series of optical signals carrying information but having different wavelengths are combined into a single bundle by a multiplexer (also called a combiner) at a transmitting end, and transmitted along a single optical fiber, and each optical signal is separated by a demultiplexer (also called a demultiplexer) at a receiving end.

At present, in the coverage construction of a gigabit network of a home broadband, the main scheme is to upgrade the existing GPON (Gigabit Passive Optical Network ) to the XGPON (10Gigabit Passive Optical Network,10 gigabit passive optical network), wherein a WDM1r (Wavelength Division Multiplexing First Revision, optical waveguide multiplexer) passive wavelength division multiplexer is a core device of the scheme. Because the services such as wide home, wireless, video monitoring and the like undergo explosive construction period, operators continuously upgrade and expand the network scale, the corridor fiber distribution boxes and the household boxes of most residential buildings and commercial buildings are in a heavy load state basically when the network time exceeds 10 years, and 1-4 passive WDM1r devices are newly deployed under the condition that the residual space is very tight. The existing WDM1r has the main form of box type design, larger size, more occupied space, insufficient simple packaging structure and stability which cannot be ensured.

Disclosure of Invention

In view of the above problems, an embodiment of the present utility model provides an optical waveguide combiner, which is used to solve the problems of larger size, complex package and insufficient reliability of the existing optical waveguide combiner.

According to an aspect of an embodiment of the present utility model, there is provided an optical waveguide combiner including:

the device comprises a hollow steel pipe body, two steel caps, a plurality of loose tail fibers and a wavelength division pipe arranged in the steel pipe body;

the two ends of the steel pipe body are respectively connected with the two steel caps; the openings at the two ends of the steel pipe body are of an up-down step structure; the two steel caps respectively comprise a step-type connection structure connected with openings at two ends of the steel pipe body; the upper steps with openings at the two ends are connected with the lower steps of the step-type connecting structure; the outer diameter of the lower step of the step-shaped connecting structure is smaller than the inner diameter of the upper step of the two-end opening, and the outer diameter of the upper step of the step-shaped connecting structure is larger than or equal to the outer diameter of the two-end opening;

through holes are respectively formed in the two steel caps; one end of each loose tail fiber respectively penetrates through the through hole of the steel cap to be connected with the wavelength division tube.

In an optional manner, the optical waveguide combiner further includes a plurality of loose tubes for protecting the connection between the loose tube pigtails and the wavelength division tubes.

In an alternative, a plurality of said loose tubes have a diameter of 2.0mm.

In an alternative mode, the wavelength division tube is a single-fiber bidirectional wavelength division tube.

In an alternative manner, the wavelength division tube includes a first wavelength end, a second wavelength end and a wave combining end which are arranged at two ends;

the first wavelength end, the second wavelength end and the wave combining end are respectively connected with the loose tail fiber.

In an alternative mode, the number of through holes of one steel cap is one, and the number of through holes of the other steel cap is two; the number of the loose tail fibers is three;

one end of the loose tail fiber penetrates through one through hole of the steel cap and is connected with the first wavelength end, and one end of the other two loose tail fibers penetrates through two through holes of the other steel cap and is connected with the second wavelength end and the wave combining end respectively.

In an alternative mode, the wavelength division tube is fixedly arranged in the steel tube body through glue.

In an alternative mode, the two steel caps are fixedly connected with the openings at the two ends of the steel pipe body through glue.

According to another aspect of an embodiment of the present utility model, there is provided an optical cable distribution box comprising: a backbone optical cable, a plurality of distribution optical cables, and at least one optical waveguide combiner as described above.

According to another aspect of an embodiment of the present utility model, there is provided an optical transmission network for transmitting an optical signal, the optical transmission network including: at least two optical waveguide combiners and optical fibers;

the optical waveguide combiner combines the optical signals with at least two wavelengths into a combined signal and transmits the combined signal to the optical fiber;

the optical fiber transmits the combined signal to another optical waveguide combiner;

and the other optical waveguide combiner carries out wave division processing on the combined signal and outputs the optical signals with at least two wavelengths.

The optical waveguide combiner provided by the embodiment of the utility model is connected with the step-type connection structure of the steel cap through the openings at the two ends of the steel tube body with the upper and lower step structures, has the advantages of simple packaging structure, convenient connection and good sealing property, is not easy to fall off, and plays a good role in protecting the internal structure.

Further, fastening protection is carried out on the joint of the wavelength division tube and the loose tail fiber through the loose tube, damage to the optical fiber at the joint in the bending installation scene of the optical cable can be effectively reduced, and the joint subjected to fastening protection is not easy to break in construction pulling.

Further, the fixed connection of the steel pipe body and the steel cap can be completed through glue, and the packaging process is simplified.

Furthermore, the optical waveguide combiner provided by the utility model can be directly replaced when any optical waveguide combiner fails, so that the production detection and maintenance efficiency is improved.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 shows a schematic structural diagram of a steel pipe of an optical waveguide combiner provided by an embodiment of the present utility model;

fig. 2 shows a schematic structural diagram of an optical waveguide combiner according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a first steel cap 20a of the optical waveguide combiner according to an embodiment of the present utility model;

fig. 4 shows a schematic structural diagram of a second steel cap 20b of the optical waveguide combiner according to an embodiment of the present utility model.

Reference numerals in the specific embodiments are as follows:

the optical fiber connector comprises a steel pipe body 10, a first steel cap 20a, a second steel cap 20b, a first loose tube tail fiber 30a, a second loose tube tail fiber 30b, a third loose tube tail fiber 30c, a wavelength division tube 40, a first wavelength end 41, a second wavelength end 42, a wave combining end 43, a first loose tube 50a, a second loose tube 50b, a second loose tube 50c, a first opening 105, a first opening upper step 105a, a first opening lower step 105b, a second opening 110, a second opening upper step 110a, a second opening lower step 110b, a first step-type connecting structure 205, a first step-type connecting structure upper step 205a, a first step-type connecting structure lower step 205b, a second step-type connecting structure 210, a second step-type connecting structure upper step 210a and a second step-type connecting structure lower step 210b.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Embodiment one:

the embodiment of the utility model provides an optical waveguide combiner, which comprises:

the device comprises a hollow steel pipe body, two steel caps, a plurality of loose tail fibers and a wavelength division pipe arranged in the steel pipe body; the two ends of the steel pipe body are respectively connected with the two steel caps; the openings at the two ends of the steel pipe body are of an up-down step structure; the two steel caps respectively comprise a step-type connection structure connected with openings at two ends of the steel pipe body; the upper steps with openings at the two ends are connected with the lower steps of the step-type connecting structure; the outer diameter of the lower step of the step-shaped connecting structure is smaller than the inner diameter of the upper step of the two-end opening, and the outer diameter of the upper step of the step-shaped connecting structure is larger than or equal to the outer diameter of the two-end opening; through holes are respectively formed in the two steel caps; one end of each loose tail fiber respectively penetrates through the through hole of the steel cap to be connected with the wavelength division tube.

The outer diameter of the wavelength division tube is smaller than the inner diameter of the steel tube body, the wavelength division tube is fixedly arranged in the cavity of the steel tube body through glue, and preferably, the wavelength division tube is fixed at the middle position of the steel tube body.

The optical waveguide combiner further comprises a plurality of loose tubes for protecting the connection parts of the loose tube pigtails and the wavelength division tubes 40.

Among them, the loose tube diameter is preferably 2.0mm.

Wherein the diameter of the steel pipe body is preferably 6.0mm, and the length of the steel pipe body is preferably less than 50mm.

Wherein the length of the loose tail fiber is preferably 0.3-1.5 m.

The loose tail fiber and the wavelength division tube can be connected in a fusion mode.

One end of each loose tail fiber passes through the through hole of the steel cap and is connected with the wavelength division tube, the other end of each loose tail fiber is connected with a tail fiber Connector, the tail fiber Connector is an SC/PC (Square Connector/Physical Contact), the front part of the Connector is a Square Connector, the front part of the Connector is used for characterizing the tail fiber, and the rear part of the Connector is used for characterizing the section process of the fiber Connector to be micro-sphere grinding and polishing).

The wavelength division tube is used for synthesizing at least two optical signals with one optical signal, and the utility model does not limit the concrete expression form of the wavelength division tube.

In the embodiment of the utility model, the wavelength division tube is a single-fiber bidirectional wavelength division tube, and the wavelength division tube is also used for separating one path of optical signals into optical signals with at least two wavelengths.

The optical waveguide combiner provided by the embodiment of the utility model is connected with the step-type connection structure of the steel cap through the openings at the two ends of the steel tube body with the upper and lower step structures, has the advantages of simple packaging structure, convenient connection and good sealing property, is not easy to fall off, and plays a good role in protecting the internal structure.

Further, the fixed connection of the steel pipe body and the steel cap can be completed through glue, and the packaging process is simplified.

Further, the loose sleeve is used for fastening at the joint of the loose sleeve tail fiber and the wavelength division tube, so that the damage to the optical fiber at the joint during bending and installation of the optical fiber can be effectively reduced, and the joint protected by fastening is not easy to break during construction and pulling, so that the fiber has good stability.

Furthermore, the optical waveguide combiner provided by the utility model can be directly replaced when any optical waveguide combiner fails, so that the production detection and maintenance efficiency is improved.

Embodiment two:

referring to fig. 1 and fig. 2, fig. 2 shows a schematic structural diagram of an optical waveguide combiner according to the present utility model, where the optical waveguide combiner includes: the hollow steel pipe body 10 and the two steel caps comprise a first steel cap 20a, a second steel cap 20b, a plurality of loose tail fibers and a wavelength division pipe 40 arranged in the steel pipe body 10.

Fig. 1 shows a schematic steel pipe structure of an optical waveguide combiner according to an embodiment of the present utility model, where openings at two ends of a steel pipe body 10 are respectively connected to a first steel cap 20a and a second steel cap 20 b; the openings at two ends of the steel pipe body 10 are in an up-down step structure, the openings at two ends comprise a first opening 105 and a second opening 110, the first opening 105 comprises a first opening upper step 105a and a first opening lower step 105b, and the second opening 110 comprises a second opening upper step 110a and a second opening lower step 110b; the first steel cap 20a includes a first stepped engagement structure 205 connected with the first opening 105; the second steel cap 20b includes a second stepped engagement structure 210 connected with the second opening 110; the first step-type engagement structure 205 includes a first step-type engagement structure upper step 205a and a first step-type engagement structure lower step 205b, and the second step-type engagement structure 210 includes a second step-type engagement structure upper step 210a and a second step-type engagement structure lower step 210b; the first opening upper step 105a is engaged with the first step engagement structure lower step 205b, the outer diameter of the first step engagement structure lower step 205b is smaller than the inner diameter of the first opening upper step 105a, and the outer diameter of the first step engagement structure upper step 205a is greater than or equal to the outer diameter of the first opening 105; the second opening upper step 110a is engaged with the second step type engagement structure lower step 210b; the outer diameter of the second step-shaped engaging structure lower step 210b is smaller than the inner diameter of the second opening upper step 110a, and the outer diameter of the second step-shaped engaging structure upper step 210a is larger than or equal to the outer diameter of the second opening 110; through holes are respectively formed in the two steel caps; one end of each loose tail fiber passes through the through hole of the steel cap and is connected with the wavelength division tube 40.

In the embodiment of the present utility model, referring to fig. 3 and 4, fig. 3 shows a schematic structural diagram of a first steel cap 20a of an optical waveguide combiner according to the embodiment of the present utility model, and fig. 4 shows a schematic structural diagram of a second steel cap 20b of the optical waveguide combiner according to the embodiment of the present utility model. The number of through holes of the first steel cap 20a is one, the number of through holes of the second steel cap 20b is two, and the first steel cap 20a and the second steel cap 20b are provided with a first step-shaped connecting structure 205 and a second step-shaped connecting structure 210 which are consistent in shape and size; the outer diameter of the first step-shaped engagement structure lower step 205b is smaller than the outer diameter of the first step-shaped engagement structure upper step 205 a; the outer diameter of the second step-shaped engagement structure lower step 210b is smaller than the outer diameter of the second step-shaped engagement structure upper step 210 a.

In the embodiment of the present utility model, the first opening 105 and the second opening 110 of the steel pipe body 10 have a structure with up-down steps with consistent shapes and sizes; specifically, the partial structures close to the openings at the two ends of the steel pipe body 10 are a first opening upper step 105a and a second opening upper step 110a, respectively, and the partial structures far from the openings at the two ends of the steel pipe body 10 are a first opening lower step 105b and a second opening lower step 110b, respectively; the inner diameters of the first opening upper step 105b, the first opening lower step 105b, the second opening upper step 110a, and the second opening lower step 110b are all smaller than or equal to the outer diameter of the steel pipe body 10. The inner diameter of the first opening upper step 105b may be larger or smaller than the inner diameter of the first opening lower step 105b, and in this embodiment, the inner diameter of the first opening upper step 105b is smaller than the inner diameter of the first opening lower step 105 b. The inner diameter of the second opening upper step 110a may be larger or smaller than the inner diameter of the second opening lower step 110b, and in this embodiment, the inner diameter of the second opening upper step 110a is smaller than the inner diameter of the second opening lower step 110 b.

In the embodiment of the present utility model, the number of loose-sleeve pigtails is three, including a first loose-sleeve pigtail 30a, a second loose-sleeve pigtail 30b, and a third loose-sleeve pigtail 30c.

Wherein the optical waveguide combiner further comprises a plurality of loose tubes for protecting the connection part between the loose tube pigtails and the wavelength division tubes 40, and the diameter of the loose tubes is preferably 2.0mm; in the present embodiment, the plurality of loose tubes includes a first loose tube 50a, a second loose tube 50b and a third loose tube 50c.

Wherein the diameter of the steel pipe body 10 is preferably 6.0mm, and the length of the steel pipe body 10 is preferably less than 50mm.

In the embodiment of the present utility model, the wavelength division tube 40 is a single-fiber bidirectional wavelength division tube.

Wherein the wavelength division tube 40 includes a first wavelength end 41, a second wavelength end 42 and a wave combining end 43 disposed at two ends; the first wavelength end 41, the second wavelength end 42 and the combining end 43 are fiber pigtail structures for receiving or transmitting optical signals.

Preferably, the first wavelength end 41 is configured to receive or transmit an optical signal with an uplink central wavelength of 1310nm and a downlink central wavelength of 1490nm, the second wavelength end 42 is configured to receive or transmit an optical signal with an uplink central wavelength of 1270nm and a downlink central wavelength of 1577nm, and the combining end 43 is configured to receive or transmit a combined signal of optical signals with uplink central wavelengths of 1310nm and 1270nm and downlink central wavelengths of 1490nm and 1577 nm.

The first wavelength end 41 is connected with the first loose tube tail fiber 30a, and the connection is fastened and protected by a first loose tube 50 a; the second wavelength end 42 is connected with the second loose tube tail fiber 30b, and the connection is fastened and protected by a second loose tube 50 b; the wave combining end 43 is connected with the third loose tube tail fiber 30c, and the connection is fastened and protected by a third loose tube 50c.

The connection between the first wavelength end 41 and the first loose tail fiber 30a, the second wavelength end 42 and the second loose tail fiber 30b, and the connection between the wave combining end 43 and the third loose tail fiber 30c may be fusion.

In the embodiment of the present utility model, the number of through holes of the first steel cap 20a is one, and the number of through holes of the second steel cap 20b is two, referring to fig. 3 and fig. 4, fig. 3 shows a schematic structural diagram of the first steel cap 20a of the optical waveguide combiner provided in the embodiment of the present utility model, and fig. 4 shows a schematic structural diagram of the second steel cap 20b of the optical waveguide combiner provided in the embodiment of the present utility model. One end of the first loose tail fiber 30a passes through one through hole of the first steel cap 20a and is connected with the first wavelength end 41, and one ends of the second loose tail fiber 30b and the third loose tail fiber 30c respectively pass through two through holes of the second steel cap 20b and are respectively connected with the second wavelength end 42 and the wave combining end 43.

The inner diameter of each through hole on the first steel cap 20a and the second steel cap 20b is larger than or equal to the outer diameter of the loose tube tail fiber, and smaller than or equal to the outer diameter of the loose tube.

Wherein the length of the loose tail fiber is preferably 0.3-1.5 m.

The other end of the first loose tail fiber 30a is connected with a first tail fiber connector 70a, the other end of the second loose tail fiber 30b is connected with a second tail fiber connector 70b, and the other end of the third loose tail fiber 30c is connected with a third tail fiber connector 70c; the first pigtail connector 70a, the second pigtail connector 70b and the third pigtail connector 70c are all SC/PC connectors.

The outer diameter of the wavelength division tube 40 is smaller than the inner diameter of the steel tube body 10, the wavelength division tube 40 is fixedly arranged in the cavity of the steel tube body 10 through glue, and preferably, the wavelength division tube 40 is fixed in the middle of the steel tube body 10.

Wherein, the first steel cap 20a and the second steel cap 20b are fixedly connected with the first opening 105 and the second opening 110 of the steel pipe body 10 respectively through glue.

The optical waveguide combiner provided by the embodiment of the utility model is matched with the first step-shaped linking structure 205 and the second step-shaped linking structure 210 of the first steel cap 20a and the second steel cap 20b respectively through the upper and lower step-shaped structures of the first opening 105 and the second opening 110 of the steel tube body 10, so that the packaging of the optical waveguide combiner can be completed, the packaging structure is simple, the connection is convenient, the sealing performance is good, the steel caps are not easy to fall off, and the internal structure is well protected.

Further, the fixed connection of the steel pipe body 10 and the steel cap can be completed through glue, and the packaging process is simplified.

Further, the loose tube is used for fastening at the joint of the loose tube tail fiber and the wavelength division tube 40, so that the damage to the optical fiber at the joint during the bending and installation of the optical fiber can be effectively reduced, and the joint protected by fastening is not easy to break during the construction and pulling, so that the fiber has good stability.

Furthermore, the optical waveguide combiner provided by the utility model can be directly replaced when any optical waveguide combiner fails, so that the production detection and maintenance efficiency is improved.

Embodiment III:

the embodiment of the utility model provides an optical cable fiber dividing box, which comprises: a backbone optical cable, a plurality of distribution optical cables, and at least one optical waveguide combiner as described above.

Wherein, the optical waveguide combiner includes: the device comprises a hollow steel pipe body, two steel caps, a plurality of loose tail fibers and a wavelength division pipe arranged in the steel pipe body; the two ends of the steel pipe body are respectively connected with the two steel caps; the openings at the two ends of the steel pipe body are of an up-down step structure; the two steel caps respectively comprise a step-type connection structure connected with openings at two ends of the steel pipe body; the upper steps with openings at the two ends are connected with the lower steps of the step-type connecting structure; the outer diameter of the lower step of the step-shaped connecting structure is smaller than the inner diameter of the upper step of the two-end opening, and the outer diameter of the upper step of the step-shaped connecting structure is larger than or equal to the outer diameter of the two-end opening; through holes are respectively formed in the two steel caps; one end of each loose tail fiber respectively penetrates through the through hole of the steel cap to be connected with the wavelength division tube.

The wavelength division tube comprises a first wavelength end, a second wavelength end and a wave combining end which are arranged at two ends; the first wavelength end, the second wavelength end and the wave combining end are respectively connected with the loose tail fiber.

Wherein the number of through holes of one steel cap is one, and the number of through holes of the other steel cap is two; the number of the loose tail fibers is three; one end of the loose tail fiber penetrates through one through hole of the steel cap and is connected with the first wavelength end, and one end of the other two loose tail fibers penetrates through two through holes of the other steel cap and is connected with the second wavelength end and the wave combining end respectively.

The other end of each loose sleeve tail fiber is connected with a tail fiber connector respectively.

In the embodiment of the utility model, two distribution cables are provided, the optical fibers of the main optical cable are connected with the wave combining end of the optical waveguide wave combiner through a tail fiber connector, and the optical fibers of the two distribution cables are respectively connected with the first wavelength end and the second wavelength end of the optical waveguide wave combiner through other two tail fiber connectors.

The optical waveguide combiner is used for combining two paths of optical signals of the two distribution optical cables into one path of optical signal and transmitting the optical signal to the trunk optical cable; the optical waveguide combiner is also used for carrying out wave division processing on one path of optical signals of the main optical cable, outputting two paths of optical signals and respectively transmitting the two paths of optical signals to the two distribution optical cables.

The optical cable splitting box further comprises a box body, wherein the box body is used for installing and placing at least one optical waveguide combiner, and a trunk optical cable and a distribution optical cable are connected with the optical waveguide combiner in the box body.

In an optional manner, the optical waveguide combiner further includes a plurality of loose tubes for protecting the connection between the loose tube pigtails and the wavelength division tubes.

In an alternative, a plurality of said loose tubes have a diameter of 2.0mm.

In an alternative mode, the wavelength division tube is fixedly arranged in the steel tube body through glue.

In an alternative mode, the two steel caps are fixedly connected with the openings at the two ends of the steel pipe body through glue.

The optical waveguide combiner arranged in the optical cable splitting box provided by the embodiment of the utility model is matched with the step-shaped connection structures of the two steel caps respectively through the upper and lower step-shaped structures of the openings at the two ends of the steel pipe body 1, so that the optical waveguide combiner can be packaged, the packaging structure is simple, the connection is convenient, the tightness is good, the steel caps are not easy to fall off, and the internal structure is well protected.

Further, the optical cable fiber dividing box provided by the utility model can be used for completing the fixed connection between the steel pipe body 10 and the steel cap through glue, so that the packaging flow of the optical waveguide combiner is simplified.

Furthermore, the optical waveguide combiner adopted by the optical cable splitting box provided by the utility model is fastened by using the loose tube at the joint of the loose tail fiber and the wavelength splitting tube, so that the damage to the optical fiber at the joint during bending and installation of the optical fiber can be effectively reduced, and the joint protected by fastening is not easy to break during construction and pulling, so that the optical cable splitting box has good stability.

Embodiment four:

an embodiment of the present utility model provides an optical transmission network for transmitting an optical signal, the optical transmission network including: at least two optical waveguide combiners and optical fibers; the optical waveguide combiner combines the optical signals with at least two wavelengths into a combined signal and transmits the combined signal to the optical fiber; the optical fiber transmits the combined signal to another optical waveguide combiner; and the other optical waveguide combiner carries out wave division processing on the combined signal and outputs the optical signals with at least two wavelengths.

Wherein, the optical waveguide combiner includes: wherein, the optical waveguide combiner includes: the device comprises a hollow steel pipe body, two steel caps, a plurality of loose tail fibers and a wavelength division pipe arranged in the steel pipe body; the two ends of the steel pipe body are respectively connected with the two steel caps; the openings at the two ends of the steel pipe body are of an up-down step structure; the two steel caps respectively comprise a step-type connection structure connected with openings at two ends of the steel pipe body; the upper steps with openings at the two ends are connected with the lower steps of the step-type connecting structure; the outer diameter of the lower step of the step-shaped connecting structure is smaller than the inner diameter of the upper step of the two-end opening, and the outer diameter of the upper step of the step-shaped connecting structure is larger than or equal to the outer diameter of the two-end opening; through holes are respectively formed in the two steel caps; one end of each loose tail fiber respectively penetrates through the through hole of the steel cap to be connected with the wavelength division tube.

The at least two optical waveguide wave combiners comprise a first optical waveguide wave combiners and a second optical waveguide wave combiners.

The first optical waveguide combiner and the second optical waveguide combiner are connected through the optical fiber.

The first optical waveguide combiner synthesizes the optical signals with at least two wavelengths into one combined signal to be output through a combining function, and the combined signal is transmitted through the optical fiber; and the second optical waveguide combiner receives the combined signal transmitted by the optical fiber, performs wave division processing on the combined signal and outputs the optical signals with at least two wavelengths.

The optical transmission network further comprises a first optical network unit connected with the first optical waveguide combiner and a second optical network unit connected with the second optical waveguide combiner; the first optical network unit converts at least two paths of optical network signals into at least two wavelengths of optical signals and transmits the at least two wavelengths of optical signals to the first optical waveguide combiner, and the second optical network unit is used for receiving the at least two wavelengths of optical signals output by the second optical waveguide combiner and restoring the at least two paths of optical network signals.

In an optional manner, the optical waveguide combiner further includes a plurality of loose tubes for protecting the connection between the loose tube pigtails and the wavelength division tubes.

In an alternative, a plurality of said loose tubes have a diameter of 2.0mm.

In an alternative manner, the wavelength division tube includes a first wavelength end, a second wavelength end and a wave combining end which are arranged at two ends;

the first wavelength end, the second wavelength end and the wave combining end are respectively connected with the loose tail fiber.

In an alternative mode, the number of through holes of one steel cap is one, and the number of through holes of the other steel cap is two; the number of the loose tail fibers is three;

one end of the loose tail fiber penetrates through one through hole of the steel cap and is connected with the first wavelength end, and one end of the other two loose tail fibers penetrates through two through holes of the other steel cap and is connected with the second wavelength end and the wave combining end respectively.

In an alternative mode, the wavelength division tube is fixedly arranged in the steel tube body through glue.

In an alternative mode, the two steel caps are fixedly connected with the openings at the two ends of the steel pipe body through glue.

The optical waveguide combiner applied to the optical transmission network provided by the embodiment of the utility model is mutually matched with the step-shaped connection structures of the two steel caps through the upper and lower step-shaped structures of the openings at the two ends of the steel tube body, so that the optical waveguide combiner can be packaged, the packaging structure is simple, the connection is convenient, the tightness is good, the steel caps are not easy to fall off, and the internal structure is well protected.

Further, the fixed connection of the steel pipe body and the steel cap can be completed through glue, and the packaging flow of the optical waveguide combiner is simplified.

Furthermore, the optical waveguide combiner applied to the optical transmission network provided by the embodiment of the utility model can effectively reduce the damage to the optical fiber at the joint when the optical fiber is bent and installed by fastening the loose tube at the joint of the loose tube tail fiber and the wavelength division tube, and the joint protected by fastening is not easy to break when being pulled in construction, so that the optical waveguide combiner has good stability.

It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present utility model should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present utility model belong.

In the description of the novel embodiment, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiment of the present utility model and for simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiment of the present utility model.

Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the novel embodiments, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or be integrated; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the novel embodiments, unless explicitly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediary. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. An optical waveguide combiner, the optical waveguide combiner comprising:

the device comprises a hollow steel pipe body, two steel caps, a plurality of loose tail fibers and a wavelength division pipe arranged in the steel pipe body;

the two ends of the steel pipe body are respectively connected with the two steel caps; the openings at the two ends of the steel pipe body are of an up-down step structure; the two steel caps respectively comprise a step-type connection structure connected with openings at two ends of the steel pipe body; the upper steps with openings at the two ends are connected with the lower steps of the step-type connecting structure; the outer diameter of the lower step of the step-shaped connecting structure is smaller than the inner diameter of the upper step of the two-end opening, and the outer diameter of the upper step of the step-shaped connecting structure is larger than or equal to the outer diameter of the two-end opening;

through holes are respectively formed in the two steel caps; one end of each loose tail fiber respectively penetrates through the through hole of the steel cap to be connected with the wavelength division tube.

2. The optical waveguide combiner of claim 1, further comprising a plurality of loose tubes for protecting the junction of the loose tube pigtails and the wavelength-division tubes.

3. The optical waveguide combiner of claim 2 wherein a plurality of said loose tubes have a diameter of 2.0mm.

4. The optical waveguide combiner of claim 1, wherein the wavelength division tube is a single fiber bi-directional wavelength division tube.

5. The optical waveguide combiner of claim 4, wherein the wavelength division tube comprises a first wavelength end, a second wavelength end, and a combining end disposed at both ends;

the first wavelength end, the second wavelength end and the wave combining end are respectively connected with the loose tail fiber.

6. The optical waveguide combiner of claim 5, wherein the number of through holes of one of the steel caps is one and the number of through holes of the other steel cap is two; the number of the loose tail fibers is three;

one end of the loose tail fiber penetrates through one through hole of the steel cap and is connected with the first wavelength end, and one end of the other two loose tail fibers penetrates through two through holes of the other steel cap and is connected with the second wavelength end and the wave combining end respectively.

7. The optical waveguide combiner of claim 1, wherein the wavelength division tube is fixedly disposed within the steel tube body by glue.

8. The optical waveguide combiner according to claim 1, wherein the two steel caps are fixedly connected with the two end openings of the steel pipe body through glue.

9. An optical cable fiber distribution box, characterized in that the optical cable fiber distribution box comprises: a trunk cable, a plurality of distribution cables and at least one optical waveguide combiner as recited in any one of claims 1-8.

10. An optical transmission network for transmitting optical signals, the optical transmission network comprising: at least two optical waveguide combiners, optical fibers according to any of claims 1-8;

the optical waveguide combiner combines the optical signals with at least two wavelengths into a combined signal and transmits the combined signal to the optical fiber;

the optical fiber transmits the combined signal to another optical waveguide combiner;

and the other optical waveguide combiner carries out wave division processing on the combined signal and outputs the optical signals with at least two wavelengths.