CN217135497U - Optical fiber interface on-off detection device - Google Patents

Abstract

The utility model belongs to the technical field of optical fiber, and provides an optical fiber interface on-off detection device, which is arranged on an optical fiber interface, wherein the optical fiber interface comprises a core part for transmitting laser signals and a connecting part sleeved on the core part; the optical fiber interface on-off detection device comprises a connecting and supporting component, a movable first light-passing ring is arranged inside one end of the connecting and supporting component, and a core part can extend into the other end of the connecting and supporting component and is pressed against the first light-passing ring; the other end of the connecting support component is connected with the connecting part; the information of the looseness of the optical fiber interface is obtained by monitoring the position signal of the first light passing ring. The utility model provides an optical fiber interface break-make detection device can accurately detect the not hard up condition of SMA interface, in time reports to the police the outage and suspends the light-emitting to the protection laser instrument.

Description

Optical fiber interface on-off detection device

Technical Field

The utility model belongs to the technical field of the optic fibre, especially, relate to an optical fiber interface break-make detection device.

Background

The SMA interface is a common optical fiber connection interface and is commonly used for various laser optical fiber output lasers, and the SMA interface is fixedly connected with the lasers in a threaded fastening mode and is convenient to use. But at the same time, the threaded connection mode also has the problem of connection reliability, such as interface loosening. When the SMA joint is applied to the field of high-energy laser, the position change of the SMA joint indicates that the SMA joint deviates from an intersection point, and output light cannot completely enter an optical fiber, so that the joint of the SAM interface and a laser is easily burnt, and even the whole laser fails.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an optical fiber interface break-make detection device can accurately detect the not hard up condition of SMA interface, in time reports to the police the outage and suspends the light-emitting to the protection laser instrument.

To achieve the purpose, the utility model adopts the following technical proposal:

the on-off detection device for the optical fiber interface is arranged on the optical fiber interface, and the optical fiber interface comprises a core part for transmitting laser signals and a connecting part sleeved on the core part;

the optical fiber interface on-off detection device comprises:

the core part can extend into the other end of the connecting and supporting component and is pressed against the first light-passing ring; the other end of the connecting support component is connected to the connecting part;

and acquiring the information of the looseness of the optical fiber interface by monitoring the position signal of the first light passing ring.

Preferably, the connection support assembly is threadedly connected to the connection portion.

Preferably, the connection support assembly includes:

the first light passing ring is arranged inside one end of the supporting piece;

one end of the connecting piece is connected with the connecting part, the other end of the connecting piece is connected with the supporting piece, the core part sequentially penetrates through the connecting piece and the supporting piece to be pressed against the first light passing ring, and the supporting piece or the connecting piece is connected with the laser.

Preferably, a flange is arranged on the connecting piece or the supporting piece, and a mounting hole connected with the laser is arranged on the flange.

Preferably, the optical fiber interface on-off detection device further includes:

and the second light-passing ring is arranged in the connecting and supporting component and is positioned on one side of the first light-passing ring, which is far away from the core part, and the first light-passing ring can be contacted with or separated from the second light-passing ring.

Preferably, the optical fiber interface on-off detection device further includes:

the insulating part is arranged inside the connecting and supporting component, and the second light-passing ring is arranged on the insulating part.

Preferably, the optical fiber interface on-off detection device further comprises an elastic member disposed in the support member, and the elastic member is configured to drive the first light passing ring to move synchronously with the core.

Preferably, the insulating member and the connection support member are connected by welding, bonding, and interference fitting.

Preferably, the support member is threadedly coupled to the connector.

Preferably, the second light-passing ring and the insulating member are connected by welding or bonding.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses well laser instrument, optical fiber interface break-make detection device and optical fiber interface install the back in proper order, and the laser signal that the laser instrument produced is through the first core that leads to light ring transmission to optical fiber interface, when connecting support assembly and optical fiber interface's being connected the appearance not hard up, and the position change of first ring of light produces position signal to acquire the not hard up information of optical fiber interface, thereby suspend laser instrument work, reach the effect of protection laser instrument. In addition, the optical fiber interface on-off detection device can be used for connecting various semiconductor lasers and optical fiber interfaces, and is high in applicability and wide in application.

Drawings

Fig. 1 is a schematic structural diagram of an optical fiber interface according to the present invention;

fig. 2 is a schematic structural diagram of a laser, an optical fiber interface on-off detection device and an optical fiber interface in the present invention;

fig. 3 is a cross-sectional view of the optical fiber interface on-off detection device and the optical fiber interface of the present invention;

fig. 4 is a cross-sectional view of the optical fiber interface on-off detection device of the present invention;

fig. 5 is a schematic structural diagram of an optical fiber interface on-off detection device and an optical fiber interface in the present invention;

fig. 6 is a schematic structural diagram of the optical fiber interface on-off detection device of the present invention.

10, an optical fiber interface on-off detection device; 1. an optical fiber interface; 11. a core; 12. a connecting portion;

2. connecting the support component; 21. a support member; 22. a connecting member; 220. a flange; 230. mounting holes; 23. a first conductive line; 24. a second conductive line;

3. a first light-passing ring; 4. a laser; 5. a second light-passing ring; 6. an insulating member; 7. an elastic member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The embodiment aims at solving the problem that a connection part is loosened when the optical fiber interface 1 is in threaded connection with a laser, wherein the optical fiber interface 1 is a standard universal part, the optical fiber interface 1 is an SMA optical fiber interface 1, and the optical fiber interface 1 is shown in a schematic structural diagram of the optical fiber interface 1 in fig. 1. The optical fiber interface 1 includes a core 11 for transmitting laser signals and a connecting portion 12 sleeved on the core 11.

In order to solve the above problem, as shown in fig. 2, in the present embodiment, an optical fiber interface on-off detection device 10 is provided, one end of the optical fiber interface on-off detection device 10 is used for connecting an optical fiber interface 1, and the other end of the optical fiber interface on-off detection device is used for connecting a laser 4, and a laser signal generated by the laser 4 is transmitted to the optical fiber interface 1 through the optical fiber interface on-off detection device 10.

Specifically, as shown in fig. 3 to 6, the optical fiber interface on-off detection device 10 includes a connection support component 2, a movable first light-passing ring 3 is disposed inside one end of the connection support component 2, a core 11 can extend into the other end of the connection support component 2 and abut against the first light-passing ring 3, and the other end of the connection support component 2 is connected to a connection portion 12. The loosening information of the optical fiber interface 1 is obtained by monitoring the position signal of the first light passing ring 3.

In this embodiment, the connection support component 2 is used to support the first light passing ring 3 inside, and in addition, when the connection support component 2 and the connection portion 12 are installed, the core 11 extends into the connection support component 2 to contact with the first light passing ring 3 and presses the first light passing ring 3 to start moving until the first light passing ring 3 does not move any more, which indicates that the connection support component 2 and the optical fiber interface 1 are installed in place, that is, the optical fiber interface on-off detection device 10 and the optical fiber interface 1 are installed in place. The connecting and supporting component 2 is fixedly connected with the laser 4 at the same time, so that a laser signal generated by the laser 4 is transmitted to the optical fiber interface 1 through the optical fiber interface on-off detection device 10. In the working process, when the position change signal of the first light passing ring 3 is monitored, the information that the optical fiber interface 1 is loosened is obtained, and the laser 4 stops working.

The position signal of the first light-passing ring 3 here refers to an electrical signal generated by directly monitoring the displacement change of the first light-passing ring 3 as the position signal of the first light-passing ring 3, and in other embodiments, may also be an electrical signal indirectly determining the position change of the first light-passing ring 3 through other signals, for example, an on-off signal generated by whether the first light-passing ring 3 is in contact with other structural members or not is used as the position signal of the first light-passing ring 3.

In this embodiment, the first light passing ring 3 is connected to an external control circuit through a first wire 23 to monitor and acquire a position signal of the first light passing ring 3, so as to detect the on-off condition of the interface between the optical fiber interface 1 and the laser 4. Above-mentioned laser instrument 4, optical fiber interface break-make detection device 10 and optical fiber interface 1 install the back in proper order, the laser signal that laser instrument 4 produced transmits to optical fiber interface 1's core 11 through first ring of light 3, when connecting support assembly 2 and optical fiber interface 1's the connection when becoming flexible, the position change of first ring of light 3 produces position signal, can in time acquire the not flexible information of optical fiber interface 1 through control circuit, thereby suspend laser instrument 4 work, reach the effect of protection laser instrument 4. In addition, the optical fiber interface on-off detection device 10 can be used for connecting various semiconductor lasers 4 and optical fiber interfaces 1, and is high in applicability and wide in application.

Preferably, since the optical fiber interface 1 in this embodiment is a standard universal component and the connecting portion 12 is an outer hexagon nut, the connecting support component 2 is in threaded connection with the connecting portion 12 in order to facilitate the connection between the optical fiber interface on-off detection device 10 and the optical fiber interface 1. The connection mode has simple structure, and is simple and convenient on the basis of not changing the structure of the optical fiber interface 1. When the optical fiber interface on-off detection device 10 is additionally arranged on the old optical fiber interface 1, the structure of the optical fiber interface 1 is not required to be changed, the optical fiber interface can be directly installed and put into use, the transformation time is short, the normal work is hardly influenced, and the transformation cost is low.

Aiming at the specific structure of the connection supporting assembly 2, the connection supporting assembly 2 comprises a supporting member 21 and a connecting member 22, wherein a first light passing ring 3 is arranged inside one end of the supporting member 21, one end of the connecting member 22 is connected with the connecting portion 12, the other end of the connecting member 22 is connected with the supporting member 21, and the core 11 sequentially penetrates through the connecting member 22 and the supporting member 21 and is pressed against the first light passing ring 3.

To facilitate the manufacture of the joint support assembly 2, the joint support assembly 2 is divided into two structural members, a support member 21 and a connecting member 22. Meanwhile, one of the support member 21 or the connecting member 22 is connected to the laser 4, and the two are separately provided to facilitate the processing of the support member 21 or the connecting member 22, on which the structure connected to the laser 4 is processed.

In a specific manner of connecting the optical fiber interface on-off detection device 10 and the laser 4, it is preferable that a flange 220 is disposed on the connecting member 22 or the supporting member 21, and a mounting hole 230 connected to the laser 4 is disposed on the flange 220. The flange 220 is arranged on the connecting piece 22 or the supporting piece 21, and the connecting piece 22 and the supporting piece 21 are respectively processed, so that the material is saved, the cost is reduced, and the processing difficulty is reduced. In this embodiment, the flange 220 is disposed on the connecting member 22, and the flange 220 is provided with a mounting hole 230, so that the mounting hole 230 is utilized to be fastened and connected with the laser 4.

Specifically, the connecting piece 22 and the supporting piece 21 are connected through threads, so that the assembly is simple, the thread machining is simple, and the maintenance and the replacement are convenient. In other embodiments, the connector 22 and the support 21 may have an interference fit.

In this embodiment, connect support assembly 2 and first ring of light 3 and use as overall structure after can encapsulating, be convenient for transport and put into use fast. After the connecting piece 22 is in threaded connection with the connecting part 12 of the optical fiber interface 1, the operation can be started, and the installation is quick and simple. The signal of the displacement change of the first light passing ring 3 is monitored to be used as the position signal of the first light passing ring 3, so that whether the optical fiber interface 1 is loose or not is obtained.

Preferably, in order to further increase the detection precision of the optical fiber on-off detection device, the optical fiber interface on-off detection device 10 further includes a second light-passing ring 5, the second light-passing ring 5 is disposed inside the support 21 and is located on one side of the first light-passing ring 3 away from the core 11, and the first light-passing ring 3 can be in contact with or separated from the second light-passing ring 5.

In this embodiment, when the optical fiber interface on-off detection device 10 is installed, the core 11 of the optical fiber interface 1 is inserted into the connector 22 and the support 21, and then contacts the first light passing ring 3 and pushes the first light passing ring 3 to move to contact the second light passing ring 5. First light ring 3 passes through first wire 23, and second light ring 5 passes through second wire 24, and both electricity connect in outside control circuit, and through monitoring the first light ring 3 and the second light ring 5 separation the signal of telecommunication that produces as first light ring 3's position signal, this position signal transmission to control circuit shows that first light ring 3's position produces the change, and then knows that optical fiber interface 1's position produces not hard up.

In this embodiment, the second light passing ring 5 is additionally arranged, and an electric signal generated by contact or separation of the first light passing ring 3 and the second light passing ring 5 is utilized to know whether the optical fiber interface 1 is loose, so that the detection precision of the optical fiber interface on-off detection device 10 is improved, the detection precision can reach 10 micrometers, the detection result is more accurate, and the laser 4 can be more accurately protected.

Preferably, the first light passing ring 3 and the second light passing ring 5 are both metal rings, and both are conductors.

In order to prevent electric shock, preferably, the optical fiber interface on-off detection device 10 further includes an insulating member 6, the insulating member 6 is disposed inside the connection support component 2 and inside the connection support component 2, and the second light-passing ring 5 is disposed on the insulating member 6.

Preferably, the insulating member 6 is connected to the connection support assembly 2 by welding, bonding, and interference fitting. In order to ensure the stability of the assembly between the insulating member 6 and the connection support member 2, it is further preferable that the insulating member 6 is welded to the connection support member 2. Specifically, the insulating member 6 is annular, and the insulating member 6 is disposed inside the supporting member 21 and is welded to the supporting member 21. More specifically, the insulating member 6 is made of ceramic or plastic.

In this embodiment, the second light-passing ring 5 is disposed inside the supporting member 21 and is coaxial with the first light-passing ring 3, and the second light-passing ring 5 is located on one side of the first light-passing ring 3 away from the optical fiber interface 1.

To fix the second light passing ring 5 and the insulating member 6, preferably, the second light passing ring 5 and the insulating member 6 are connected by welding or bonding to fix the second light passing ring 5 and the insulating member 6. In this embodiment, the second light passing ring 5 is embedded in the insulating member 6, and in order to ensure the stability of the second light passing ring 5 after being assembled with the insulating member 6, it is further preferable that the second light passing ring 5 is connected to the insulating member 6 by welding.

When the optical fiber interface 1 is loosened, in order to ensure that the first light-passing ring 3 can move in time, a position signal can be generated in time and monitored by a control circuit. Specifically, the optical fiber interface on-off detection device 10 further includes an elastic member 7 disposed in the support member 21, and the elastic member 7 is configured to drive the first light passing ring 3 to move synchronously with the core 11. When the elastic part 7 can ensure that the optical fiber interface 1 is loosened, the first light passing ring 3 can be timely changed in position, and the elastic part 7 is arranged to control the first light passing ring 3 to move.

In this embodiment, the elastic member 7 is disposed between the first light passing ring 3 and the second light passing ring 5, after the optical fiber interface 1 is installed, the elastic member 7 is compressed, the first light passing ring 3 contacts the second light passing ring 5, at this time, the first wire 23 is communicated with the second wire 24, and the control circuit receives an electrical signal, which indicates that the optical fiber interface 1 is installed perfectly. When the optical fiber interface 1 is loosened, the elastic piece 7 pushes the first light passing ring 3 to be separated from the second light passing ring 5, the first lead 23 and the second lead 24 are disconnected, the signals communicated with each other are interrupted, and the control circuit receives the interrupt signals to indicate the position change of the first light passing ring 3, so that the information that the optical fiber interface 1 is loosened is obtained.

In the embodiment where the second light-passing ring 5 is not provided, it is also possible that the elastic member 7 is provided between the support member 21 and the first light-passing ring 3, the elastic member 7 being located on the side close to the optical fiber connector. After the optical fiber interface 1 is installed, the elastic part 7 is stretched, when the optical fiber interface 1 is loosened, the elastic part 7 pulls the position of the first light passing ring 3 to change, the displacement change of the first light passing ring 3 is used as a position signal of the first light passing ring 3, and accordingly the information that the optical fiber is loosened is obtained. In the embodiment where the second light passing ring 5 is provided, on the basis of the above, when the optical fiber interface 1 is loosened, the elastic member 7 pulls the first light passing ring 3 to separate from the second light passing ring 5, and an interrupt signal generated by disconnecting the first wire 23 from the second wire 24 is used as a position signal of the first light passing ring 3, so that information about the looseness of the optical fiber interface 1 is obtained.

In the embodiment without the second light-passing ring 5, it is also possible that the elastic member 7 is disposed between the support member 21 and the first light-passing ring 3, the elastic member 7 being located on the side away from the optical fiber interface 1. After the optical fiber interface 1 is installed, the elastic part 7 is compressed, when the optical fiber interface 1 is loosened, the elastic part 7 pushes the first light passing ring 3 to change the position, the displacement change of the first light passing ring 3 is used as a position signal of the first light passing ring 3, and accordingly the loosening information of the optical fiber interface 1 is obtained.

It is also possible that one side of the first light circulation ring 3 close to the core 11 is provided with a first elastic member and the other side of the second light circulation ring 5 is provided with a second elastic member. Specifically, one end of the first elastic member abuts against the supporting member 21, the other end of the first elastic member abuts against the first light passing ring 3, one end, away from the core 11, of the supporting member 21 is provided with a sealing ring, a laser signal generated by the laser 4 can penetrate through the sealing ring and be received by the core 11, one end of the second elastic member abuts against the sealing ring, and the other end of the second elastic member abuts against the first light passing ring 3. After optical fiber interface 1 installation is accomplished, the second elastic component is compressed, and first elastic component is stretched, and when optical fiber interface 1 appeared becoming flexible, first through light ring 3 of first elastic component pulling, the second elastic component promoted first through light ring 3, made first through light ring 3 position change to the displacement change of first through light ring 3 is regarded as first through light ring 3's position signal, learns optical fiber interface 1 not flexible information according to this.

In other embodiments, the moving manner of the first light-passing ring 3 can also be such that, after the core 11 of the optical fiber interface 1 is inserted into the connection support component 2 and contacts with the first light-passing ring 3, the front end of the core 11 is inserted into the first light-passing ring 3 and is in transition fit with the first light-passing ring 3, so as to ensure that when the optical fiber interface 1 is loose, the position of the core 11 is changed, and further the position of the first light-passing ring 3 is changed, and the displacement change of the first light-passing ring 3 is used as the position signal of the first light-passing ring 3, so as to acquire the information that the optical fiber interface 1 is loose. Or, the elastic ring is installed to the one end that first logical ring 3 is close to optical fiber interface 1, the front end of core 11 can insert in the elastic ring with first logical ring 3 fastening connection, first logical ring 3 and optical fiber interface 1's core 11 synchronous motion, optical fiber interface 1 position produces not hard up, core 11 and first logical ring 3 synchronous motion, the displacement change of first logical ring 3 is as first logical ring 3's position signal, learns the not hard up information of optical fiber interface 1 according to this.

In the above embodiment provided with the second light passing ring 5 and the insulating member 6, preferably, the insulating member 6 is connected to the connecting support member 2 by welding, bonding, and interference fit. In order to ensure the stability of the assembly between the insulating member 6 and the connection support member 2, it is further preferable that the insulating member 6 is welded to the connection support member 2. Specifically, in this embodiment, the second light passing ring 5 is disposed inside the supporting member 21 and is disposed coaxially with the first light passing ring 3, and the second light passing ring 5 is located on a side of the first light passing ring 3 away from the optical fiber interface 1.

In order to fix the second light passing ring 5 and the insulating member 6, preferably, the second light passing ring 5 and the insulating member 6 are connected by welding or bonding to fix the second light passing ring 5 and the insulating member 6. The stability of the second light passing ring 5 and the insulating member 6 after assembly is ensured, and further preferably, the second light passing ring 5 and the insulating member 6 are connected by welding.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The optical fiber interface on-off detection device is characterized by being mounted on an optical fiber interface (1), wherein the optical fiber interface (1) comprises a core part (11) for transmitting laser signals and a connecting part (12) sleeved on the core part (11);

the optical fiber interface on-off detection device comprises:

the connecting and supporting component (2), a movable first light-passing ring (3) is arranged inside one end of the connecting and supporting component (2), and the core (11) can extend into the other end of the connecting and supporting component (2) and is pressed against the first light-passing ring (3); the other end of the connecting and supporting component (2) is connected to the connecting part (12);

and the information of the looseness of the optical fiber interface (1) is obtained by monitoring the position signal of the first light passing ring (3).

2. The optical fiber interface on-off detection device according to claim 1, wherein the connection support assembly (2) is in threaded connection with the connection portion (12).

3. The optical fiber interface on-off detection device according to claim 1 or 2, wherein the connection support assembly (2) comprises:

a support (21) having the first light-passing ring (3) disposed inside one end thereof;

the connecting piece (22) is connected with the connecting part (12) at one end and connected with the supporting piece (21) at the other end, and the core part (11) sequentially penetrates through the connecting piece (22) and the supporting piece (21) and is pressed against the first light-passing ring (3); the support (21) or the connecting piece (22) is connected to the laser (4).

4. The optical fiber interface on-off detection device according to claim 3, wherein a flange (220) is disposed on the connecting member (22) or the supporting member (21), and a mounting hole (230) connected with the laser (4) is disposed on the flange (220).

5. The optical fiber interface on-off detection device according to claim 1 or 2, further comprising:

the second light-passing ring (5) is arranged inside the connecting and supporting component (2) and is positioned on one side, far away from the core part (11), of the first light-passing ring (3), and the first light-passing ring (3) can be in contact with or separated from the second light-passing ring (5).

6. The optical fiber interface on-off detection device according to claim 5, further comprising:

the insulating part (6) is arranged inside the connecting and supporting component (2), and the second light-passing ring (5) is arranged on the insulating part (6).

7. The optical fiber interface on-off detection device according to claim 3, further comprising an elastic member (7) disposed in the support member (21), wherein the elastic member (7) is configured to drive the first light circulating ring (3) to move synchronously with the core (11).

8. The optical fiber interface on-off detection device according to claim 6, wherein the insulating member (6) is connected with the connection support assembly (2) through welding, bonding and interference fit.

9. The optical fiber interface on-off detection device according to claim 3, wherein the supporting member (21) is screwed with the connecting member (22).

10. The optical fiber interface on-off detection device according to claim 6, wherein the second light-passing ring (5) is connected with the insulating member (6) by welding or bonding.

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