WO2016197647A1

WO2016197647A1 - Optical splitter, test apparatus and test method

Info

Publication number: WO2016197647A1
Application number: PCT/CN2016/076530
Authority: WO
Inventors: 李青; 金晓静
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-06-08
Filing date: 2016-03-16
Publication date: 2016-12-15
Also published as: CN106301545A

Abstract

Provided are an optical splitter, a test apparatus and a test method. The optical splitter comprises: a first output end, a fibre winding structure and a second output end. The first output end is connected to one end of the fibre winding structure, wherein the fibre winding structure is formed by winding optical fibres; the other end of the fibre winding structure is set as the second output end; and the second output end is used for test output of the optical splitter. The problem that a blind zone exists in an optical splitter test is solved and the accuracy of network fault locating in a passive optical network (PON) is improved.

Description

Beam splitter, test device and test method

Technical field

The present invention relates to the field of communications, and in particular to a beam splitter, a test apparatus, and a test method.

Background technique

The Optical Distribution Network (ODN) of the Passive Optical Network (PON) is a point-to-multipoint network structure. The network structure is far more complicated than the point-to-point optical network. Especially in the scenario of Fiber To The Home (FTTH), the fiber has entered thousands of households, and the probability of fiber failure has increased greatly.

In the related art, in order to cope with the ODN problem occurring in the optical network in the fiber access, the operator hopes to periodically detect the performance of the ODN and locate the fault by using an Optical Time Domain Reflectometer (OTDR). In the PON network, the optical splitter is an important optical path device. For the OTDR, the existence of the optical splitter brings a serious problem to the OTDR test: blind zone.

The blind zone can be divided into an event blind zone and an attenuation blind zone, which respectively correspond to a reflection event and a decay event. The beam splitter has a strong attenuation and is often accompanied by strong reflections, resulting in large blind spots near the splitter in the OTDR test results. In the blind zone, the ODN failure cannot be located through the OTDR.

In the related art, the test of the optical splitter has a blind spot problem, and no effective solution has been proposed yet.

Summary of the invention

The invention provides a beam splitter, a test device and a test method, so as to at least solve the problem that the test of the splitter in the related art has a blind spot.

According to an embodiment of the present invention, a beam splitter is provided, including: a first output end, a disk fiber structure, and a second output end;

The first output end is connected to one end of the fiber structure, wherein the fiber structure is formed by fiber winding;

The other end of the disk structure is configured as a second output, and the second output is used for a test output of the beam splitter.

In an embodiment of the invention, the optical fiber is a bare fiber.

In an embodiment of the invention, the radius of the disk structure is greater than the minimum bend radius of the fiber.

In an embodiment of the invention, the length of the fiber of the disk structure is determined by the split ratio of the splitter and/or the type of fiber interface.

In an embodiment of the invention, the fiber length of the disk structure ranges from 10 m to 1 km.

According to another embodiment of the present invention, there is also provided a testing apparatus comprising: a housing, the housing interior comprising: a beam splitter and a fiber structure;

A first type of output end of the optical splitter is coupled to one end of the fiber optic structure, and the other end of the fiber optic structure is coupled to a second type of output end on the housing.

In an embodiment of the invention, the optical fiber is a bare fiber.

In an embodiment of the invention, the fiber length of the disk fiber ranges from 10 m to 1 km.

According to another embodiment of the present invention, there is also provided a spectrometer testing method, comprising:

Connecting the first output end of the optical splitter to one end of the fiber structure, wherein the fiber structure is formed by winding the optical fiber;

The other end of the disk structure is disposed as a second output of the beam splitter, and the second output is used for a test output of the beam splitter.

The present invention provides a beam splitter, comprising: a first output end, a fiber structure, and a second output end, wherein the first output end is connected to one end of the fiber structure, wherein the fiber structure is coiled by the optical fiber Forming; the other end of the fiber structure is set as a second output end, and the second output end is used for the test output of the optical splitter, which solves the problem that the optical splitter test has a dead zone, and improves the fault of the passive optical network PON network The accuracy of the positioning.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a block diagram showing the structure of a beam splitter according to an embodiment of the present invention;

2 is a schematic diagram of a hardware module of a splitter in accordance with a preferred embodiment of the present invention;

3 is a schematic view showing the structure of a disk according to a preferred embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

A splitter is provided in this embodiment. FIG. 1 is a structural block diagram of a beam splitter according to an embodiment of the present invention. As shown in FIG. 1, the first output terminal 12, the fiber structure 14 and the second output end are included. 16;

The first output end 12 is connected to one end of the fiber structure 14 , wherein the fiber structure 14 is formed by fiber winding;

The other end of the disk structure 14 is provided as a second output 16, which is used for the test output of the beam splitter.

Through the above-mentioned optical splitter, the test blind zone of the optical splitter is set inside the optical splitter, and the fault of the true branched optical fiber can be tested, the blind spot problem of the optical splitter test is solved, and the fault location of the passive optical network PON network is improved. Accuracy.

In this embodiment, the optical fiber is a bare fiber, so that the volume of the fiber structure can be reduced, and space is saved.

In this embodiment, the radius of the fiber structure 14 is greater than the minimum bending radius of the fiber. The length of the fiber of the disk structure 14 is determined by the split ratio of the splitter and/or the type of fiber interface. The fiber interface type includes a PC (Physical Contact) interface and an APC (Angled Physical Contact) interface, and the fiber length of the fiber structure 14 ranges from 10 m to 1 km.

In this embodiment, a test apparatus is further provided, comprising: a housing, the housing interior comprises: a beam splitter and a fiber structure;

A first type of output of the optical splitter is coupled to one end of the fiber optic structure, and the other end of the fiber optic structure is coupled to a second type of output end of the housing.

Through the above test device, the test blind zone of the test device is set inside the optical splitter, and the fault of the true branch fiber can be tested, the blind spot problem of the test of the splitter is solved, and the fault location of the PON network of the passive optical network is improved. Accuracy.

In this embodiment, a spectrometer testing method is also provided, including:

Through the above test method, the test blind zone in the test is set inside the optical splitter, and the fault of the true branch fiber can be tested, the blind zone problem of the splitter test is solved, and the fault location of the passive optical network PON network is improved. Accuracy.

The invention will now be described in detail in conjunction with the preferred embodiments and embodiments.

The preferred embodiment overcomes the problem of optical fiber failure in a range after the splitter cannot be detected in the OTDR solution deployed in the local area, and provides a device that can circumvent the optical splitter of the OTDR test dead zone.

The apparatus of the spectroscope of the preferred embodiment includes the following modules:

Ordinary beam splitter, multiple disk fibers;

The method further includes: connecting the plurality of outputs of the ordinary beam splitter and the fibers of the disks.

A 10m to 1km fiber is connected in series at each output of the ordinary beam splitter, and combined into a beam splitter that circumvents the dead zone of the OTDR test. In this way, the OTDR test dead zone is confined inside the optical splitter, and the OTDR can test the fault of the true branch fiber.

The preferred embodiment circumvents the OTDR testing technology in the blind area behind the optical splitter, and achieves the enhanced OTDR test effect, saves troubleshooting time, and improves efficiency.

2 is a schematic diagram of a hardware module of a splitter according to a preferred embodiment of the present invention, as shown in FIG. 2, including:

Shell, common beam splitter, disc fiber.

3 is a schematic structural view of a disk fiber according to a preferred embodiment of the present invention. As shown in FIG. 3, the disk fiber is coiled using bare fibers, and the disk fiber diameter is larger than the minimum bending radius of the fiber. The length is 10 m to 1 km, and the length of the disk is determined according to the splitting ratio of the spectroscope, whether the connector of the spectroscope is PC or APC, and preferably 200 m is used. The number of fibers is equal to the number of ports in the splitter.

The input terminal of the ordinary split beam splitter is used as the input end of this splitter that can circumvent the OTDR test dead zone.

The N output ends of the optical splitter are fused together with one end of the fiber, and the other end of the fiber is used as the output of the optical splitter that can circumvent the OTDR test dead zone.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

A splitter according to an embodiment of the present invention includes: a first output end, a fiber structure, and a second output end, wherein the first output end is connected to one end of the fiber structure, wherein the fiber structure is made of fiber The coil is formed; the other end of the fiber structure is set as a second output end, and the second output end is used for the test output of the optical splitter, which solves the problem that the optical splitter test has a dead zone, and improves the PON network for the passive optical network. The accuracy of fault location.

Claims

A beam splitter comprising: a first output end, a disk fiber structure, and a second output end;

The first output end is connected to one end of the fiber structure, wherein the fiber structure is formed by fiber winding;

The other end of the disk structure is configured as a second output, and the second output is used for a test output of the beam splitter.
The optical splitter of claim 1 wherein said optical fiber is a bare fiber.
The optical splitter of claim 1 wherein the radius of the disk structure is greater than a minimum bend radius of the fiber.
The optical splitter of claim 1 wherein the length of the fiber of the disk structure is determined by a split ratio of the splitter and/or a type of fiber interface.
The spectroscope according to any one of claims 1 to 4, wherein the fiber length of the disc fiber structure ranges from 10 m to 1 km.
A testing device includes: a housing including: a beam splitter and a disk structure;

A first type of output end of the optical splitter is coupled to one end of the fiber optic structure, and the other end of the fiber optic structure is coupled to a second type of output end on the housing.
The testing device of claim 6 wherein the optical fiber is bare fiber.
The test apparatus according to any one of claims 6 to 7, wherein the fiber length of the disk fiber ranges from 10 m to 1 km.
A spectrometer test method comprising:

Connecting the first output end of the optical splitter to one end of the fiber structure, wherein the fiber structure is formed by winding the optical fiber;

The other end of the disk structure is disposed as a second output of the beam splitter, and the second output is used for a test output of the beam splitter.
The method of claim 9 wherein the fiber length of the disk structure ranges from 10 m to 1 km.