CN110957628A

CN110957628A - Optical fiber fusing detection device, system and method

Info

Publication number: CN110957628A
Application number: CN201911267814.0A
Authority: CN
Inventors: 蔡亚鹏; 王宾; 李瑞浔; 何青文; 郑龙; 汪微
Original assignee: O Net Communications Shenzhen Ltd
Current assignee: O Net Technologies Shenzhen Group Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-04-03

Abstract

The invention relates to the field of lasers, in particular to a device, a system and a method for detecting optical fiber fusing; the detection device comprises at least one low-temperature fusing silk thread laid on a light path, a detection circuit used for detecting the state of the low-temperature fusing silk thread and an adapter plate at least used for reliably connecting the low-temperature fusing silk thread with the detection circuit, wherein each low-temperature fusing silk thread corresponds to one adapter plate; compared with the prior art, the invention designs the detection method and the detection system for the optical fiber fusing, has simple and convenient use, is not limited by space, has wide detection range, can carry out multi-point and multi-direction detection, improves the detection reliability, further avoids additional loss caused by the optical fiber fusing, and reduces the repair cost of the optical fiber laser.

Description

Optical fiber fusing detection device, system and method

Technical Field

The invention relates to the field of lasers, in particular to a device, a system and a method for detecting optical fiber fusing.

Background

With the promotion of global industrial automation production and the improvement of laser power, the application of lasers in the industrial field is rapidly permeated, the situation that industrial lasers run away from the whole laser industry is presented in the laser market, a fiber laser is taken as one of industrial lasers and is becoming the core driving force for the growth of the whole industry, components such as a pump, an optical device, optical fibers (including active optical fibers and passive optical fibers), QBH and the like are important components of the fiber laser and are also the core of the fiber laser, the cost of the fiber laser is lower and lower along with the popularization and application of the localization of the internal components of the fiber laser, and the fiber is taken as one of the core components of the fiber laser, and if the core components cannot be found and processed in time due to the quality problem, the assembly process problem and the operator level problem of the fiber, a certain fiber is fused/burned out due to overheating, the additional loss of the fiber laser caused by the problems of fiber fusing, cross-over caused by fiber fusing and the like is increased.

At present, a PD detector is generally placed at a welding point of an optical device and a mold stripping device to collect a light leakage signal at the position to be used as optical fiber fusing protection.

Therefore, it is necessary to design a detection device, system and method for optical fiber fusing with low cost, high reliability and capability of implementing multi-point detection to solve the defects in the prior art.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a device, a system and a method for detecting fiber fuse, which overcome the defects of the prior art, such as high cost, single monitoring point, failure to alarm quickly in time, and susceptibility to false alarm caused by influence.

The technical scheme adopted by the invention for solving the technical problems is as follows: provided is a detection device for fiber fuse, which is preferably characterized in that: the detection device comprises at least one low-temperature fusing silk thread laid on a light path, a detection circuit used for detecting the state of the low-temperature fusing silk thread and at least one adapter plate used for reliably connecting the low-temperature fusing silk thread with the detection circuit, wherein each low-temperature fusing silk thread corresponds to one adapter plate.

The better scheme is that the adapter plate is provided with a first connecting piece connected with the low-temperature fusing silk thread and a second connecting piece connected with the detection circuit.

The low-temperature fusing silk thread is a lead-free solder wire.

Wherein, the diameter of the lead-free solder wire is 0.3-0.5mm in a better scheme.

Wherein, the melting point of the lead-free solder wire is 130-150 ℃.

In order to solve the defects in the prior art, the invention also provides a detection system for fusing the optical fiber, and the preferred scheme is as follows: the detection system comprises the detection device and the optical fiber laser, wherein the detection device is arranged inside the optical fiber laser.

The optical fiber laser comprises a pump, a beam combiner, a high-reflection grating, an optical fiber, a low-reflection grating, a mold stripper and an output head, wherein the pump emits a light beam, and the light beam sequentially passes through the beam combiner, the high-reflection grating, the optical fiber, the low-reflection grating and the mold stripper and then is output by the output head.

The detection system further comprises a driving module, an optical coupling isolation module used for sending a switching signal and a control module used for controlling the operation of the system.

In order to solve the defects in the prior art, the present invention further provides a method for detecting fiber fuse, wherein the detection method is preferably implemented by the detection system, and comprises the following steps:

s1, laying a layer of low-temperature fusing silk thread on the surface of the optical fiber;

s2, detecting whether the low-temperature fusing wire is fused or not;

and S3, cutting off the power supply if the low-temperature fusing wire is fused.

Compared with the prior art, the invention has the advantages that the detection method and the detection system for the optical fiber fusing are simple and convenient to use, are not limited by space, have wide detection range, can carry out multi-point and multi-direction detection, improve the detection reliability, further avoid additional loss caused by the optical fiber fusing, and reduce the repair cost of the optical fiber laser.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a first schematic structural diagram of a device for detecting the fusion of an optical fiber according to the present invention;

FIG. 2 is a schematic structural view of an interposer of the present invention;

FIG. 3 is a schematic structural diagram of a device for detecting the fusion of an optical fiber according to the present invention;

FIG. 4 is a third schematic structural diagram of a device for detecting the fusion of an optical fiber according to the present invention;

FIG. 5 is a schematic diagram of the structure of a fiber laser in the present invention;

FIG. 6 is a first schematic structural diagram of a fiber optic fuse detection system according to the present invention;

FIG. 7 is a second schematic structural diagram of a system for detecting fiber optic fusing according to the present invention;

FIG. 8 is a flow chart of a method for detecting fiber optic fusing according to the present invention.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the present invention provides a preferred embodiment of a device for detecting the fusion of an optical fiber.

Referring to fig. 1, the detection device includes at least one low-temperature fusing wire 110-11N laid on a light path, a detection circuit 120 for detecting a state of the low-temperature fusing wire 110, and an adapter plate 130-13N for at least reliably connecting the low-temperature fusing wire 110-11N with the detection circuit 120, where each low-temperature fusing wire corresponds to one adapter plate.

Further, referring to fig. 2, each of the adapter plates is provided with a first connector connected to the low-temperature fusing wire and a second connector connected to the detection circuit 120, taking the adapter plate 130 as an example, the adapter plate 130 includes a first connector a0 and a second connector B0.

Specifically, the first connecting member 131 and the second connecting member 132 are both pads or terminals; the bonding pads are basic constitutional units of surface mount assembly and are used for constituting bonding pad patterns (land patterns) of a circuit board, namely various bonding pad combinations designed for special element types; the terminal refers to a wiring terminal, the wiring terminal is an accessory product for realizing electrical connection, the connector is industrially divided into the category of the connector, along with the increasing industrial automation degree and the stricter and more accurate industrial control requirements, the using amount of the wiring terminal gradually rises, along with the development of the electronic industry, the using range of the wiring terminal is more and more, the types are more and more, and the wiring terminal is used most widely, except for a PCB (printed circuit board) terminal, and further comprises a hardware terminal, a nut terminal, a spring terminal and the like.

Specifically, referring to fig. 3, four low-temperature fusing wires and four corresponding adapter plates are taken as an example for detailed description; the low-temperature fusing filament 110-; when the optical fiber at any point in the optical path is fused, the corresponding low-temperature fusing silk thread is fused by heating, and the detection module 120 can determine that the optical fiber is fused by detecting that the low-temperature fusing silk thread is fused by heating.

The second connecting members B0-B3 of the adapter plate 130-133 and the detection circuit 120 have two connection modes, one is as shown in fig. 3, the adapter plate 130-133 is directly and individually connected to the detection circuit 120 through thin wires, and this mode can be fixed to the fiber fusing position, and under the condition of not disassembling the device, the problem can be located and analyzed; referring to fig. 4, the

adapter plates

130 and 133 are connected in series and then connected to the detection circuit 120 through thin wires, which can save the wires and the space requirement for the low temperature fuse wires and the adapter plates.

Further, the low-temperature fusing silk thread is a lead-free solder wire, and the lead-free solder wire comprises a tin-copper lead-free tin wire/solder wire, a tin-silver-copper lead-free tin wire/solder wire, a silver lead-free tin wire/solder wire, a solid core lead-free tin wire/solder wire and a small rosin lead-free tin wire/solder wire; the soldering flux has good wettability, electric conductivity and thermal conductivity, is easy to apply tin, customizes the rosin content percentage according to the requirement of a customer, does not splash during welding, is uniform in soldering flux distribution, has no broken soldering flux phenomenon in a tin core, is uniform in winding and free from knotting, and has high tin application speed and few residues.

Wherein the diameter of the lead-free solder wire is 0.3-0.5 mm.

Wherein the melting point of the lead-free solder wire is 130-150 ℃.

As shown in FIGS. 5-7, the present invention provides a preferred embodiment of a system for detecting the presence of a blown optical fiber.

A detection system for optical fiber fusing comprises the detection device and an optical fiber laser, wherein the detection device is arranged inside the optical fiber laser.

Referring to fig. 5, the fiber laser includes a pump 210, a beam combiner 220, a high reflective grating 230, an optical fiber 240, a low reflective grating 250, a mode stripper 260, and an output head 270, wherein the pump 210 emits an optical beam, and the optical beam sequentially passes through the beam combiner 220, the high reflective grating 230, the optical fiber 240, the low reflective grating 250, and the mode stripper 260 and is then output by the output head 270.

The detection device is arranged in a position relationship with the optical fiber laser, namely a low-temperature fusing wire 110 and an adapter plate 130 are arranged between the pump 210 and the beam combiner 220, a low-temperature fusing wire 111 and an adapter plate 131 are arranged between the beam combiner 220 and the high-reflection grating 230, a low-temperature fusing wire 112 and an adapter plate 132 are arranged on the optical fiber 240, a low-temperature fusing wire 113 and an adapter plate 133 are arranged between the optical fiber 240 and the low-reflection grating 250, a low-temperature fusing wire 114 and an adapter plate 134 are arranged between the low-reflection grating 250 and the stripping device 260, and the low-temperature fusing wire 110 and the low-temperature fusing wire 114 are connected into the detection module 120 through the adapter plate 130 and the adapter plate 134 at a time.

Specifically, the low-

temperature fusing filament

110 and 114 are sequentially laid on the pump 210 and the beam combiner 220, the beam combiner 220 and the high reflective grating 230, the optical fiber 240 and the low reflective grating 250, and the low reflective grating 250 and the mold stripper 260, and both ends of the low-

temperature fusing filament

110 and 114 are connected to the first connecting member a0-a4 on the adapter plate 130 and 134, further, the second connecting member B0-B4 of the adapter plate 130 and 134 is connected to the detection circuit 120; when any one of the fusion points of the pump 210 and the combiner 220, the combiner 220 and the high reflective grating 230, the optical fiber 240 and the low reflective grating 250, and the low reflective grating 250 and the stripper 260 is fused, the corresponding low-temperature fusing wire is fused by heating, and the detection module 120 can determine that the optical fiber is fused by detecting that the low-temperature fusing wire is fused by heating.

The second connecting members B0-B4 of the adapter plate 130-134 and the detection circuit 120 have two connection modes, one is that the adapter plate 130-134 is directly and individually connected to the detection circuit 120 through thin wires (refer to fig. 6), and this mode can be fixed to the fiber fusing position, and under the condition of not disassembling the device, the problem can be located and analyzed; another way is that the adapter plates 130 and 134 are connected in series and then connected to the detection circuit 120 through thin wires (refer to fig. 7), which can save the wires and the space requirement for multiple low-temperature fusing wires and multiple adapter plates.

Furthermore, the system also comprises a driving module, an optical coupling isolation module used for sending a switching signal and a control module used for controlling the operation of the system.

Specifically, when a certain section of welding point in the optical path is fused, the low-temperature fusing silk thread can be fused, the detection circuit detects that the low-temperature fusing silk thread is fused and then feeds back the fused low-temperature fusing silk thread to the control circuit, the control circuit sends a signal to the optical coupling isolation circuit, the optical coupling isolation circuit immediately generates a level signal (namely a switch signal), and meanwhile, the control circuit controls the driving circuit to cut off a main power supply loop, so that the generation of larger loss is avoided.

As shown in FIG. 8, the present invention also provides a preferred embodiment of a method for detecting a blown optical fiber.

A method for detecting the fusion of an optical fiber, and referring to fig. 8, the method is implemented by the detection system as described above, and includes the steps of:

s2, detecting whether the low-temperature fusing wire is fused or not;

Specifically, the low-temperature fusing silk thread is fused by heat after the optical fiber is fused, a switching signal generated after the low-temperature fusing silk thread is disconnected serves as an input signal of the system, and when the low-temperature fusing silk thread is fused, the input signal is inverted in level to inform the system of rapidly cutting off a power supply loop and a related control unit, so that greater loss is avoided.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, but rather as embodying the invention in a wide variety of equivalent variations and modifications within the scope of the appended claims.

Claims

1. An optical fiber fusing detection device is characterized in that: the detection device comprises at least one low-temperature fusing silk thread laid on a light path, a detection circuit used for detecting the state of the low-temperature fusing silk thread and at least one adapter plate used for reliably connecting the low-temperature fusing silk thread with the detection circuit, wherein each low-temperature fusing silk thread corresponds to one adapter plate.

2. The detection device according to claim 1, wherein: and the adapter plate is provided with a first connecting piece connected with the low-temperature fusing silk thread and a second connecting piece connected with the detection circuit.

3. The detection device according to claim 1, wherein: the low-temperature fusing silk thread is a lead-free soldering tin thread.

4. The detection device according to claim 3, wherein: the diameter of the lead-free solder wire is 0.3-0.5 mm.

5. The detection device according to claim 3, wherein: the melting point of the lead-free solder wire is 130-150 ℃.

6. A system for detecting blown optical fibers, comprising: the detection system comprises the detection device according to any one of claims 1 to 5 and a fiber laser, the detection device being disposed inside the fiber laser.

7. The detection system of claim 6, wherein: the optical fiber laser comprises a pump, a beam combiner, a high-reflection grating, an optical fiber, a low-reflection grating, a mold stripping device and an output head, wherein the pump emits a light beam, and the light beam sequentially penetrates through the beam combiner, the high-reflection grating, the optical fiber, the low-reflection grating and the mold stripping device and then is output by the output head.

8. The detection system of claim 6, wherein: the detection system further comprises a driving module, an optical coupling isolation module used for sending a switching signal and a control module used for controlling the operation of the system.

9. A method for detecting the fusion of an optical fiber, wherein the method is implemented by the detection system according to any one of claims 6 to 8, and comprises the steps of:

s2, detecting whether the low-temperature fusing wire is fused or not;