CN220380524U - Optical fiber detection structure capable of detecting optical fiber plug - Google Patents

Abstract

The utility model provides an optical fiber detection structure capable of detecting the insertion and extraction of an optical fiber, which comprises an LED, an optical fiber detection bracket, a photodiode, an optical fiber connection fixer, an optical fiber connection socket and an optical fiber ferrule. The utility model detects the light emitted by the LED to generate output current change through the photodiode, and judges whether the plug is in place or not according to the current change condition; the LEDs and the photodiodes are arranged in 2 limit grooves on the optical fiber detection support and horizontally opposite to each other, so that the current value detected by the photodiodes is more accurate; the optical fiber detection bracket is arranged on a limit groove of a fixer in the laser tube shell, and the LED1 and the PD are controlled at the same height; the surface of the optical fiber connection socket is communicated, when no optical fiber is inserted, the communicated position is not blocked by a plug, light emitted by the LED can irradiate the surface of the photodiode to generate current, and when the optical fiber is inserted, the LED emits light and cannot irradiate the surface of the photodiode, and no current is generated at the moment.

Description

Optical fiber detection structure capable of detecting optical fiber plug

Technical Field

The utility model relates to the technical field of electronic components, in particular to an optical fiber detection structure capable of detecting the insertion and extraction of an optical fiber.

Background

The semiconductor laser has the advantages of small volume, high efficiency, easy integration and the like, and is widely used in the fields of communication, medical treatment, military and the like. However, when the semiconductor laser is used, the insertion and extraction of the optical fiber are inevitably considered, and due to technical limitations, a coupling mirror used by the conventional optical fiber coupling semiconductor laser has a fixed focus, and a focus plane needs to be accurately coincident with the optical fiber plane to ensure power and use safety.

However, given the different needs of the user for the fiber core, the 400/200/105 or even smaller or larger core fiber needs to be replaced continuously, which provides a great challenge for the use of fiber-coupled semiconductor lasers. When the ferrule is not inserted in place, the laser power may be reduced and the risk of fiber burnout may increase, possibly also affecting the life of the laser.

Therefore, there is a need for a structure that can detect whether an optical fiber is in place.

Disclosure of Invention

The utility model provides an optical fiber detection structure capable of detecting the insertion and extraction of an optical fiber, which aims to solve the problem of in-place detection when the optical fiber is inserted, and detects the change of output current generated by light rays emitted by an LED through a photodiode, and judges whether the insertion and extraction are in place according to the current change condition; 2 limit grooves are formed in the optical fiber detection support, the size of each limit groove is matched with the size of an LED and the size of a photodiode to be installed, and the positions of the LEDs and the photodiodes need to be horizontally opposite when the photodiodes and the LEDs are installed, so that the current value detected by the photodiodes is more accurate; the optical fiber detection bracket is arranged on a fixer limit groove in the laser tube shell through tight mechanical fit, the fixer limit groove can tightly fix the optical fiber detection bracket at a designated position of the tube shell, and the LED1 and the PD are controlled at the same height; besides the optical fiber detection bracket and the fixer on the tube shell, a special optical fiber connection socket is needed, the surface of the special socket is communicated, when no optical fiber is inserted, the communicated position is not blocked by a plug, the light emitted by the LED can irradiate the surface of the photodiode to generate current, and when the optical fiber is inserted, the LED emits light and cannot irradiate the surface of the photodiode, and no current is generated at the moment.

The utility model provides an optical fiber detection structure capable of detecting the insertion and extraction of an optical fiber, which comprises an LED, an optical fiber detection bracket fixed on the outer side of the LED, a photodiode arranged on the opposite side of the LED, an optical fiber connector fixer arranged on the outer side of the optical fiber detection bracket and an optical fiber connection socket arranged on the outer side of an optical fiber inserting core;

the photodiode is also arranged on the optical fiber detection support, the optical fiber connector fixer is fixed with the laser tube shell and fixes the optical fiber detection support, through holes are formed in two sides of the optical fiber connection socket, the LED and the photodiode are located on two sides of the through holes, the optical fiber connection socket penetrates through the optical fiber detection support and the optical fiber connector fixer, and when the optical fiber lock pin enters the optical fiber connection socket and is inserted into place, the optical fiber lock pin blocks light of the LED to be output to the photodiode.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fiber, the optical fiber detection support comprises a support body, and LED limit grooves and photodiode limit grooves which are respectively arranged on two sides of the support body, wherein the LEDs are embedded in the LED limit grooves, and the photodiodes are embedded in the photodiode limit grooves;

the bracket body is of a hollow structure.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fibers, as a preferable mode, the bracket body comprises a left side face, a top face and a right side face which are sequentially connected, the LED limiting groove is arranged in the left side face, the photodiode limiting groove is arranged in the right side face, the LED limiting groove and the photodiode limiting groove are all communicated and provided with stepped faces, and the distance from the center of the LED limiting groove to the bottom of the left side face is the same as the distance from the photodiode limiting groove to the bottom of the right side face.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fibers, as an optimal mode, the bottom of the left side face, the top of the top face and the bottom of the right side face are all plane, and the height of the left side face is the same as that of the right side face.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fibers, as an optimal mode, the optical fiber connector fixer comprises a fixer body, a left fixing surface connected to the left lower part of the fixer body, a right fixing surface connected to the right lower part of the fixer body, a top fixing surface at the top and an optical fiber mounting hole penetrating through the fixer body, wherein the left fixing surface, the right fixing surface and the top fixing surface are all planes, the fixer body is of a hexahedral structure, and the left fixing surface and the right fixing surface are arranged on the front side of the bottom of the fixer body in a protruding mode;

the bottom of left side supports at left side stationary plane upper surface, the bottom of right side supports at right side stationary plane upper surface, the bottom of top surface supports at top stationary plane upper surface.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fibers, as a preferred mode, the optical fiber connection socket comprises an optical fiber outer tube, a socket and avoidance holes which are arranged on two sides of the optical fiber outer tube and are oppositely arranged, the optical fiber outer tube is of a hollow structure, and the number of the avoidance holes is two, and the size and the height of the avoidance holes are the same.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fiber, the optical fiber outer tube penetrates through the optical fiber mounting hole in an optimal mode, and light of the LED sequentially penetrates through the avoidance hole and is captured by the photodiode.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fiber, the insertion opening is an SMA905 interface as an optimal mode.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fiber, as an optimal mode, the LED is a 650nm red light LED, and the detection range of the photodiode is 600-700 nm.

According to the optical fiber detection structure capable of detecting the insertion and extraction of the optical fibers, as an optimal mode, the LEDs and the photodiodes are adhered to two sides of the optical fiber detection support, and the optical fiber detection support is adhered and fixed on the optical fiber connector fixer.

The utility model has the following advantages:

(1) The utility model detects the light emitted by the LED to generate output current change through the photodiode, and judges whether the plug is in place or not according to the current change condition;

(2) The photodiodes adopted by the utility model are photodiodes for detecting specific wavelengths, and only detect the light source emitted by the LEDs, so that the influence of ambient light on the plug detection can be avoided to a great extent, the LEDs are selected as the light rays with specific wavelengths, and the detection of the specific photodiodes can be met;

(3) According to the utility model, a mechanical matching installation mode is adopted, 2 limit grooves are formed in the optical fiber detection support, the sizes of the limit grooves are just matched with the sizes of the LEDs and the photodiodes to be installed, and the positions of the LEDs and the photodiodes need to be horizontally opposite when the photodiodes and the LEDs are installed, so that the current value detected by the photodiodes is more accurate;

(4) The optical fiber detection bracket is arranged on the limit groove of the fixer in the laser tube shell mainly through tight mechanical fit, the limit groove of the fixer can tightly fix the optical fiber detection bracket at the appointed position of the tube shell, and the LED1 and the PD are controlled at the same height;

(5) Besides the optical fiber detection bracket and the fixer on the tube shell, the utility model also needs a special optical fiber connection socket, the surface of the special socket is communicated, when no optical fiber is inserted, the communicated position is not blocked by a plug, the light emitted by the LED can irradiate the surface of the photodiode to generate current, and when the optical fiber is inserted, the LED emits light and cannot irradiate the surface of the photodiode, and no current is generated at the moment.

Drawings

FIG. 1 is an overall assembly diagram of a fiber optic probe structure that detects fiber optic plugs;

FIG. 2 is a schematic diagram showing the installation of an optical fiber detection bracket, an LED1 and a PD of an optical fiber detection structure capable of detecting the insertion and extraction of an optical fiber;

FIG. 3 is a schematic view of a fiber optic connector holder with a fiber optic probe structure for detecting fiber optic plugs;

FIG. 4 is a schematic illustration of the installation of a fiber optic probe holder and holder of a fiber optic probe structure for detecting fiber optic plugs;

FIG. 5 is a schematic diagram of a fiber optic connection socket of a fiber optic probing structure for detecting fiber optic plug;

FIG. 6 is a schematic diagram of the internal structure of a fiber optic connector with a fiber optic probe structure for detecting the insertion and removal of optical fibers;

fig. 7 is a schematic diagram of an optical fiber detecting structure capable of detecting insertion and extraction of an optical fiber after the optical fiber is inserted into an optical fiber connection socket.

Reference numerals:

1. an LED; 2. an optical fiber detection bracket; 21. a bracket body; 211. a left side surface;

212. a top surface; 213. a right side surface; 22. an LED limit groove; 23. a photodiode limiting groove; 3. a photodiode; 4. an optical fiber connector holder; 41. a holder body; 42. a left side fixing surface; 43. a right side fixing surface; 44. a top fixed surface; 45. an optical fiber mounting hole; 5. an optical fiber connection socket; 51. an optical fiber outer tube; 52. a socket; 53. avoidance holes; 6. an optical fiber ferrule.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Example 1

As shown in fig. 1 to 7, a fiber detection structure capable of detecting insertion and extraction of an optical fiber, the components include: the LED optical fiber detection device comprises an LED1, an optical fiber detection support 2, a photodiode 3, an installed optical fiber fixer 4, a laser tube shell of an optical fiber connection socket 5 and an SMA905 standard interface optical fiber ferrule 6;

the optical fiber detection bracket 2 is fixed on the outer sides of the LED1 and the photodiode 3, the LED1 is arranged on the opposite side of the photodiode 3, the optical fiber connector fixer 4 is arranged on the outer side of the optical fiber detection bracket 2, and the optical fiber connection socket 5 is arranged on the outer side of the optical fiber insert core 6;

the optical fiber connector fixer 4 is fixed with the laser tube shell and fixes the optical fiber detection bracket 2, through holes are arranged at two sides of the optical fiber connection socket 5, the LED1 and the photodiode 3 are positioned at two sides of the through holes, the optical fiber connection socket 5 penetrates through the optical fiber detection bracket 2 and the optical fiber connector fixer 4, and when the optical fiber insert 6 enters the optical fiber connection socket 5 and is inserted into place, the optical fiber insert 6 blocks the light of the LED1 from being output to the photodiode 3;

as shown in fig. 2, the optical fiber detection bracket 2 comprises a bracket body 21, and an LED limit groove 22 and a photodiode limit groove 23 which are respectively arranged at two sides of the bracket body 21, wherein the LED1 is embedded in the LED limit groove 22, and the photodiode 3 is embedded in the photodiode limit groove 23;

the bracket body 21 is of a hollow structure;

the bracket body 21 comprises a left side surface 211, a top surface 212 and a right side surface 213 which are sequentially connected, an LED limit groove 22 is arranged in the left side surface 211, a photodiode limit groove 23 is arranged in the right side surface 213, the LED limit groove 22 and the photodiode limit groove 23 are all communicated and provided with a stepped surface, and the distance from the center of the LED limit groove 22 to the bottom of the left side surface 211 is the same as the distance from the photodiode limit groove 23 to the bottom of the right side surface 213;

the bottoms of the left side surface 211, the top of the top surface 212 and the bottom of the right side surface 213 are all plane, and the height of the left side surface 211 is the same as that of the right side surface 213;

as shown in fig. 3, the optical fiber connector holder 4 includes a holder body 41, a left side fixing surface 42 connected to a left side lower portion of the holder body 41, a right side fixing surface 43 connected to a right side lower portion, a top fixing surface 44 at the top, and an optical fiber mounting hole 45 penetrating the holder body 41, the left side fixing surface 42, the right side fixing surface 43, and the top fixing surface 44 are all planar, the holder body 41 is of a hexahedral structure, and the left side fixing surface 42 and the right side fixing surface 43 are provided to protrude at a bottom front side of the holder body 41;

as shown in fig. 4, the bottom of the left side 211 is supported on the upper surface of the left side fixing surface 42, the bottom of the right side 213 is supported on the upper surface of the right side fixing surface 43, and the bottom of the top 212 is supported on the upper surface of the top fixing surface 44;

as shown in fig. 5, the optical fiber connection socket 5 includes an optical fiber outer tube 51, a socket 52 and avoidance holes 53 which are connected and are arranged on two sides of the optical fiber outer tube 51 oppositely, the optical fiber outer tube 51 is of a hollow structure, and the number of the avoidance holes 53 is two and the size and the height are the same;

as shown in fig. 6 to 7, the optical fiber outer tube 51 passes through the optical fiber mounting hole 45, and the light of the led1 passes through the avoidance hole 53 in sequence and is captured by the photodiode 3;

socket 52 is an SMA905 interface;

the LED1 is a 650nm red LED, and the detection range of the photodiode 3 is 600-700 nm;

the LED1 and the photodiode 3 are adhered to two sides of the optical fiber detection bracket 2, and the optical fiber detection bracket 2 is adhered and fixed on the optical fiber connector fixer 4.

At this time, after the positive and negative electrodes of the LED1 and the photodiode 3 are LED out through the connection wires, the LED1 and the photodiode 3 are respectively placed into the limit grooves 22 and 23 inside the optical fiber detection bracket 2, and the limit groove structure is formed by matching the special protruding structures on the LED1 and the photodiode 3 and limiting the LED1 and the photodiode 3 in a mechanical matching manner, as shown in fig. 2. The LED1 is powered on, the output is regulated to a rated working mode, the current detection equipment is used for monitoring the output current change of the photodiode 3, at the moment, the optical fiber is not inserted into the special optical fiber connection socket, and the light emitted by the LED1 vertically irradiates the surface of the photodiode 3. The removal requires the insertion of the fiber stub using an optical fiber, the internal structure of which is shown in fig. 6. At this time, the optical fiber core plug just blocks the light emitted by the LED1, and the current emitted by the photodiode 3 can restore to the initial value, so that the optical fiber can be judged to be inserted in place at this time, and the normal light emission can be ensured.

The utility model can be suitable for various occasions needing to perform optical fiber plug detection.

In order to realize simple and convenient optical fiber plug detection, the plug detection mode is to detect the change of output current generated by light rays emitted by the LED1 through the photodiode, and judge whether the plug is in place or not according to the current change condition. The LED1 lamp and the photodiode 3 are simultaneously arranged on the plug detection support designed by the utility model.

The photodiode 3 adopted by the utility model is the photodiode 3 for detecting the specific wavelength, only the light source emitted by the LED1 is detected, the influence of the ambient light on the plug detection can be avoided to a great extent, the LED1 selects the light with the specific wavelength, and the detection of the specific photodiode 3 can be met.

According to the utility model, a mechanical matching installation mode is adopted, as shown in fig. 2, 2 limit grooves are formed in the optical fiber detection support 2, the sizes of the limit grooves are matched with the sizes of the LEDs 1 and the photodiodes 3 to be installed, and when the photodiodes 3 and the LEDs 1 are installed, the positions of the LEDs 1 and the photodiodes 3 need to be horizontally opposite, so that the current value detected by the photodiodes 3 is more accurate. A schematic diagram of the mounting of the LED1 and photodiode 3 is shown in fig. 1.

The optical fiber detection bracket 2 is arranged on the limit groove of the fixer in the laser tube shell mainly through tight mechanical fit, the fixer can tightly fix the optical fiber detection bracket 2 at the designated position of the tube shell as shown in fig. 3, and the LED1 and the PD are controlled at the same height, and the specific assembly details are shown in fig. 4.

In addition to the optical fiber detecting bracket 2 and the fixer on the tube shell, the utility model also needs a special optical fiber connecting socket 5, and the optical fiber connecting socket 5 is shown in fig. 5. The surface of the special socket is penetrated, when the optical fiber 6 is not inserted, the penetrated position 53 is not blocked by a plug, the light emitted by the LED1 can irradiate the surface of the photodiode 3 to generate current, and when the optical fiber is inserted, the LED1 emits light and cannot irradiate the surface of the photodiode 3, and no current is generated. As shown in fig. 6-7.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (10)

1. An optical fiber detection structure capable of detecting optical fiber plug, which is characterized in that: the optical fiber detection device comprises an LED (1), an optical fiber detection bracket (2) fixed on the outer side of the LED (1), a photodiode (3) arranged on the opposite side of the LED (1), an optical fiber connector fixer (4) arranged on the outer side of the optical fiber detection bracket (2) and an optical fiber connection socket (5) arranged on the outer side of an optical fiber insert core (6);

the optical fiber connector is characterized in that the photodiode (3) is also arranged on the optical fiber detection support (2), the optical fiber connector fixer (4) is fixed with the laser tube shell and fixes the optical fiber detection support (2), through holes are formed in two sides of the optical fiber connection socket (5), the LED (1) and the photodiode (3) are located on two sides of the through holes, the optical fiber connection socket (5) penetrates through the optical fiber detection support (2) and the optical fiber connector fixer (4), and when the optical fiber inserting core (6) enters the optical fiber connection socket (5) and is inserted into place, the optical fiber inserting core (6) blocks light of the LED (1) to be output to the photodiode (3).

2. The optical fiber detecting structure for detecting optical fiber plug according to claim 1, wherein: the optical fiber detection bracket (2) comprises a bracket body (21), and LED limit grooves (22) and photodiode limit grooves (23) which are respectively arranged on two sides of the bracket body (21), wherein the LEDs (1) are embedded in the LED limit grooves (22), and the photodiodes (3) are embedded in the photodiode limit grooves (23);

the bracket body (21) is of a hollow structure.

3. The optical fiber detecting structure for detecting optical fiber plug according to claim 2, wherein: the support body (21) is including consecutive left surface (211), top surface (212) and right flank (213), LED spacing groove (22) set up in left surface (211), photodiode spacing groove (23) set up in right flank (213), LED spacing groove (22) with photodiode spacing groove (23) all link up and set up the step face, the distance of LED spacing groove (22) center to left surface (211) bottom with the distance of photodiode spacing groove (23) to right flank (213) bottom is the same.

4. A fiber optic probe structure for detecting fiber optic plugs according to claim 3, wherein: the bottoms of the left side face (211), the top of the top face (212) and the bottom of the right side face (213) are all plane, and the height of the left side face (211) is the same as that of the right side face (213).

5. A fiber optic probe structure for detecting fiber optic plugs according to claim 3, wherein: the optical fiber connector fixer (4) comprises a fixer body (41), a left fixing surface (42) connected to the left lower part of the fixer body (41), a right fixing surface (43) connected to the right lower part of the fixer body, a top fixing surface (44) at the top and an optical fiber mounting hole (45) penetrating through the fixer body (41), wherein the left fixing surface (42), the right fixing surface (43) and the top fixing surface (44) are all planes, the fixer body (41) is of a hexahedral structure, and the left fixing surface (42) and the right fixing surface (43) are arranged on the front side of the bottom of the fixer body (41) in a protruding mode;

the bottom of the left side surface (211) is supported on the upper surface of the left side fixing surface (42), the bottom of the right side surface (213) is supported on the upper surface of the right side fixing surface (43), and the bottom of the top surface (212) is supported on the upper surface of the top fixing surface (44).

6. The optical fiber detecting structure for detecting optical fiber plug according to claim 5, wherein: the optical fiber connection socket (5) comprises an optical fiber outer tube (51), a socket (52) and avoidance holes (53) which are connected with each other and are arranged on two sides of the optical fiber outer tube (51) oppositely, the optical fiber outer tube (51) is of a hollow structure, and the number of the avoidance holes (53) is two and the size and the height are the same.

7. The optical fiber detecting structure for detecting optical fiber plug according to claim 6, wherein: the optical fiber outer tube (51) passes through the optical fiber mounting hole (45), and the light of the LED (1) passes through the avoidance hole (53) in sequence and is captured by the photodiode (3).

8. The optical fiber detecting structure for detecting optical fiber plug according to claim 6, wherein: the socket (52) is an SMA905 interface.

9. The optical fiber detecting structure for detecting optical fiber plug according to claim 1, wherein: the LED (1) is a 650nm red LED, and the detection range of the photodiode (3) is 600-700 nm.

10. The optical fiber detecting structure for detecting optical fiber plug according to claim 1, wherein: the LED (1) and the photodiode (3) are adhered to two sides of the optical fiber detection support (2), and the optical fiber detection support (2) is adhered and fixed on the optical fiber connector fixer (4).