Optical fiber adapter detection light extraction device and SC optical fiber adapter

Abstract

The present invention discloses a detection light extraction device for an optical fiber adapter and an SC optical fiber adapter. The adopted technical scheme includes: an optical fiber seat, with horizontally arranged optical fiber pre-buried holes at both ends, and a light-transmitting groove in the middle, the optical fiber pre-buried holes penetrate the light-transmitting groove, and a "U"-shaped guide groove is formed at the bottom of the light-transmitting groove, and slots are arranged on both sides of the light-transmitting groove; an embedded optical fiber, composed of a left embedded optical fiber and a right embedded optical fiber, the left embedded optical fiber and the right embedded optical fiber are respectively horizontally embedded in the optical fiber pre-buried holes at both ends of the optical fiber seat, and the two close ends thereof are placed in the light-transmitting groove of the optical fiber seat, and the ends of the two close ends are provided with oppositely arranged inclined surfaces, and an optical film is arranged between the inclined surfaces, and the optical film cooperates with the inclined surface to extract the detection light; a photoelectric detector is arranged in the slot of the optical fiber seat, and is used to detect the extracted detection light signal and convert the optical signal into an electrical signal.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a fiber optic adapter detection light extraction device and a corresponding SC fiber optic adapter. Background Art

[0002] In recent years, in the field of communications, optical fibers that can carry out high-speed and large-capacity transmission have become the mainstream of transmission lines and are developing further. As a result, optical transmission paths are frequently changed, abandoned, or added, especially in optical communication-related equipment in data centers or telecommunications rooms. The current management method is to put paper labels on jumpers to manage the optical fiber communication direction address and transmission content of this port. However, due to a large number of changes or demolition and construction business, the workload has increased dramatically due to the need to re-label paper labels. The mistakes or irresponsibility of the actual operators have caused the content of the paper labels to be far from the actual optical transmission content, resulting in numerous errors, which has caused great trouble to the construction of later constructors, and also greatly reduced work efficiency and increased operation and maintenance costs.

[0003] Some existing detection light extraction technologies are usually implemented by changing the fiber node structure or introducing waveguide defects in the fiber node. For example: using the reflection and scattering leakage caused by the non-close contact of the fiber end face to extract the detection light. This method has no wavelength selectivity, and the end face conditions and insertion loss are difficult to control, and it cannot effectively obtain the required wavelength of detection light in proportion. Another example: introducing a wedge groove in the ferrule, and extracting the detection light through refraction and reflection at the wedge groove interface. This method also has no wavelength selectivity. Although the extraction rate is controllable, the optical loss of the node is difficult to reduce. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a fiber optic adapter detection light extraction device and an SC fiber optic adapter.

[0005] To solve the above problems, the technical solution adopted by the present invention includes:

[0006] The optical fiber seat has horizontally arranged optical fiber pre-buried holes at both ends and a light-transmitting groove in the middle. The optical fiber pre-buried holes penetrate the light-transmitting groove, and a "U"-shaped guide groove is formed at the bottom of the light-transmitting groove, and slots are provided on both sides of the light-transmitting groove;

[0007] The pre-buried optical fiber is composed of a left pre-buried optical fiber and a right pre-buried optical fiber. The left pre-buried optical fiber and the right pre-buried optical fiber are respectively horizontally pre-buried in the optical fiber pre-buried holes at both ends of the optical fiber holder, and the two close ends thereof are placed in the light-transmitting groove of the optical fiber holder, and the ends of the two close ends are provided with oppositely arranged inclined surfaces, and an optical film is provided between the inclined surfaces, and the optical film cooperates with the inclined surfaces to extract detection light;

[0008] A photoelectric detector is arranged in the slot of the optical fiber holder, and is used to detect the extracted detection light signal and convert the light signal into an electrical signal;

[0009] A wiring harness is connected to the photoelectric detector.

[0010] The optical fiber adapter detection light extraction device is characterized by further comprising a fixing seat for connecting the wiring and the photoelectric detector.

[0011] The optical fiber adapter detection light extraction device is characterized in that a filter film is provided on the detection part of the photoelectric detector.

[0012] The optical fiber adapter detection light extraction device is characterized in that the photoelectric detector is a PD photoelectric detector.

[0013] The optical fiber adapter detection light extraction device is characterized in that the width W of the light-transmitting groove is 200 μm-500 μm.

[0014] The optical fiber adapter detection light extraction device is characterized in that the angle between the inclined surface at the front end of the pre-buried optical fiber and the axial direction of the optical fiber is 30°-60°.

[0015] The optical fiber adapter detection light extraction device is characterized in that a conical positioning groove is provided at the upper end of the optical fiber seat corresponding to the light-transmitting groove, and a conical positioning portion adapted to the conical positioning groove is provided at the bottom of the fixing seat.

[0016] The optical fiber adapter detection light extraction device is characterized in that: the fixed base is provided with two cable slots that pass through from top to bottom, and the bottom is provided with two photoelectric detector slots that are connected to the cable slots. The cable is arranged in the cable slot of the fixed base, and the photoelectric detector is arranged in the photoelectric detector slot of the fixed base.

[0017] The optical fiber adapter detection light extraction device is characterized in that an elastic buckle is provided on one of the opposite side surfaces of the fixing seat, and an elastic hook is provided on the other opposite side surface.

[0018] An SC optical fiber adapter is implemented according to the optical fiber adapter detection light extraction device described above, comprising a housing, a connector installed in the housing, and a sleeve installed in the connector, characterized in that: the optical fiber holder is installed in the sleeve, the connector is installed on the fixing seat through a second mounting port arranged above, the sleeve is inserted into the photoelectric detector through a third mounting port arranged above, so that the photoelectric detector is arranged in the optical fiber holder slot, and a first mounting port is arranged above the housing to connect the external terminal to the fixing seat and the cable.

[0019] The optical fiber adapter detection light extraction device and the optical fiber adapter of the present invention:

[0020] 1. The optical fiber adapter detection light extraction device of the present invention has obvious advantages over the existing optical fiber adapter detection light extraction device by setting an optical film with a specific refractive index between the inclined surfaces of the optical fiber. The reflectivity selectivity can effectively control the escape power of the detection light;

[0021] 2. The transparent receiving tube and reflective concave surface of the traditional optical fiber adapter detection light extraction device are omitted, which further reduces light loss and improves the stability of detection. At the same time, it greatly simplifies the product structure and is easier to produce and promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 is a schematic structural diagram of a detection light extraction device for an optical fiber adapter of the present invention;

[0024] Figure 2 is an exploded view of the optical fiber adapter detection light extraction device of the present invention;

[0025] Figure 3 It is a side view of the optical fiber adapter detection light extraction device of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the pre-buried optical fiber of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the optical fiber holder of the present invention;

[0028] Figure 6 yes Figure 3 AA section view;

[0029] Figure 7 It is a front structural schematic diagram of the fixing seat of the present invention;

[0030] Figure 8 It is a schematic diagram of the reverse structure of the fixing seat of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the photoelectric detector and the wiring of the present invention;

[0032] Fig.10 It is a diagram showing the refraction effect of the optical fiber detection light of the present invention.

[0033] Fig.11 is a schematic structural diagram of the optical fiber adapter of the present invention;

[0034] Fig.12 is an exploded view of the optical fiber adapter of the present invention;

[0035] Fig.13 is a transverse cross-sectional view of the optical fiber adapter of the present invention;

[0036] Fig.14 It is a longitudinal cross-sectional view of the optical fiber adapter of the present invention. DETAILED DESCRIPTION

[0037] Embodiment 1:

[0038] like Figures 1 to 10 As shown, a fiber optic adapter detection light extraction device a of the present invention comprises a fiber optic seat 1, a pre-buried optical fiber 2, a photoelectric detector 3 and a cable arrangement 4. Horizontally arranged fiber optic pre-buried holes 101 are provided at both ends of the fiber optic seat 1, and a light-transmitting groove 102 is provided in the middle of the fiber optic seat 1, and the light-transmitting groove extends in the horizontal direction on both sides of the fiber optic seat 1. The fiber optic pre-buried hole 101 penetrates the light-transmitting groove 102, and a "U"-shaped guide groove 103 is formed at the bottom of the light-transmitting groove 102 to ensure that the pre-buried optical fiber arranged in the fiber optic seat 1 is accurately docked. The fiber optic seat 1 is provided with slots 104 on both sides corresponding to the light-transmitting groove 102. The pre-buried optical fiber 2 is composed of a left pre-buried optical fiber 201 and a right pre-buried optical fiber 202. The left pre-buried optical fiber 201 and the right pre-buried optical fiber 202 are respectively horizontally pre-buried in the optical fiber pre-buried holes 101 at both ends of the optical fiber holder 1. The two proximal ends of the left pre-buried optical fiber 201 and the right pre-buried optical fiber 202 are placed in the light-transmitting groove 102 of the optical fiber holder 1, and the ends of the two proximal ends are provided with oppositely arranged inclined surfaces 203, and the inclined surfaces 203 face the horizontal direction of the light-transmitting groove 102. An optical film 204 is provided between the inclined surfaces 203, and the optical film 204 cooperates with the inclined surfaces 203 to extract the detection light by refraction. The optical film 204 is a solid optical medium film or a liquid film or a film composed of an optical adhesive to achieve accurate extraction of optical signals in the optical fiber at a specific ratio. Wherein, when a solid optical medium film is selected, it is plated and arranged on the two inclined surfaces or one of the inclined surfaces of the left pre-buried optical fiber and the right pre-buried optical fiber; when a liquid film or a film composed of an optical adhesive is selected, it is filled or bonded and arranged between the two inclined surfaces of the left pre-buried optical fiber and the right pre-buried optical fiber. In the above scheme, it is preferred to use a film composed of an optical adhesive, such as UV glue, which is also called photosensitive glue or ultraviolet light curing glue. It is a type of adhesive that can be cured by ultraviolet light irradiation, and its reflectivity is selective. At the same time, the left pre-buried optical fiber and the right pre-buried optical fiber can be connected by bonding, which is easier to produce. The photodetector 3 is arranged in the slot 104 of the optical fiber seat 1, and is used to detect the extracted detection light signal and convert the light signal into an electrical signal. The cable 4 is connected to the photodetector 3, and the external reading terminal is connected to the cable 7 to read the detection signal of the detection light extraction device.

[0039] The photodetector 3 is a PD photodetector. PD refers to a photodiode. A photodiode works under the action of a reverse voltage. When exposed to light of normal illumination, the current generated is called a photocurrent. If a load is connected to the external circuit, an electrical signal is obtained on the load, and this electrical signal changes accordingly with the change of the input optical power. The cable 7 is an FPC flexible cable or an FFC flat cable. The FFC flexible flat cable (FFC) is a new type of data cable made of PET insulating material and extremely thin tinned flat copper wire, which is pressed together by a high-tech automated equipment production line. It has the advantages of being soft, flexible, easy to bend and fold, thin, small, simple to connect, easy to disassemble, and easy to solve electromagnetic shielding (EMI). The FPC flexible cable is a flexible circuit board with different single-sided, double-sided and multi-layer structures obtained by chemically etching FCCL (flexible copper foil).

[0040] Furthermore, the optical fiber adapter detection light extraction device also includes a fixing seat 6, which is used to connect the flat cable 4 and the photoelectric detector 3 to fix the flat cable 4 and the photoelectric detector 3 and facilitate assembly with the optical fiber adapter.

[0041] Furthermore, a filter film 5 is provided on the detection part of the photodetector 6. The filter film 5 is plated by physical or chemical methods and has an anti-reflection effect in the detection light band and blocks other light signals from entering the detector. The filter film itself is an existing material and will not be described in detail here.

[0042] Furthermore, the width W of the light-transmitting groove 102 is 200 μm-500 μm, preferably 300 μm, so as to ensure that the detection light can be refracted out while ensuring the accuracy and stability of the pre-buried optical fiber docking.

[0043] Furthermore, the angle of the inclined surface 3 at the front end of the embedded optical fiber 2 is 30°-60°, so that the detection light can be normally emitted. Preferably, it is 45°, so that the detection light can be emitted 90° in the horizontal direction of the light-transmitting groove, so as to be received by the photoelectric detector.

[0044] Furthermore, a conical positioning groove 105 is provided at the upper end of the optical fiber holder 1 corresponding to the light-transmitting groove 102, and a conical positioning portion 601 adapted to the conical positioning groove 105 is provided at the bottom of the fixing seat 6, so as to ensure accurate installation between the fixing seat and the optical fiber holder, so that the photoelectric detector can be aligned with the inclined surface of the embedded optical fiber.

[0045] Furthermore, the fixing seat 6 is provided with two cable slots 602 extending vertically therethrough, and two photoelectric detector slots 603 communicating with the cable slots 602 are provided at the bottom, the cable 4 is arranged in the cable slots 602 of the fixing seat 6, and the photoelectric detector 3 is arranged in the photoelectric detector slots 603 of the fixing seat 6, so as to realize the quick installation between the cable and the photoelectric detector and the fixing seat.

[0046] Furthermore, an elastic buckle 604 is provided on one of the opposite sides of the fixing base 6, and an elastic hook 605 is provided on the other opposite side to achieve rapid installation between the fixing base and the application object.

[0047] Embodiment 2:

[0048] like Figures 11 to 14 As shown, an SC optical fiber adapter of the present invention is implemented according to the optical fiber adapter detection light extraction device described in Example 1, comprising a housing 10, a connector 11 installed in the housing 10, and a sleeve 12 installed in the connector 11. The optical fiber holder 1 is installed in the sleeve 12, the connector 11 is installed on the fixing seat 6 through the second installation port 14 provided above, and the sleeve 12 is inserted into the photodetector 3 through the third installation port 15 provided above, so that the photodetector 3 is arranged in the slot 104 of the optical fiber holder 1. A first installation port 13 is provided above the housing 10 to connect the external terminal with the fixing seat 6 and the flat cable 4. The second installation port 14 of the connector 11 is provided with card slots 16 on both sides, and the fixing seat and the connector are fixedly connected by the card slots 16 and the elastic buckles 604 on both sides of the fixing seat 6. The optical fiber adapter detection light extraction device can also be applied to optical fiber adapters such as FC adapters and ST adapters, and is not limited to SC optical fiber adapters.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A fiber optic adapter detection light extraction device, characterized in that: include: An optical fiber seat (1) having horizontally arranged optical fiber pre-buried holes (101) at both ends and a light-transmitting groove (102) in the middle, wherein the optical fiber pre-buried holes (101) penetrate the light-transmitting groove (102), and a "U"-shaped guide groove (103) is formed at the bottom of the light-transmitting groove (102), and slots (104) are provided on both sides of the light-transmitting groove (102); The pre-buried optical fiber (2) is composed of a left pre-buried optical fiber (201) and a right pre-buried optical fiber (202), wherein the left pre-buried optical fiber (201) and the right pre-buried optical fiber (202) are respectively horizontally pre-buried in the optical fiber pre-buried holes (101) at the two ends of the optical fiber seat (1), and the two proximal ends thereof are placed in the light-transmitting groove (102) of the optical fiber seat (1), and the ends of the two proximal ends are provided with inclined surfaces (203) arranged opposite to each other, and an optical film (204) is provided between the inclined surfaces (203), and the optical film (204) cooperates with the inclined surfaces (203) to extract detection light; the inclined surfaces (203) face the horizontal direction to the left and right of the light-transmitting groove (102); A photoelectric detector (3) is arranged in a slot (104) of the optical fiber holder (1) and is used to detect the extracted detection light signal and convert the light signal into an electrical signal; A cable (4) is connected to the photoelectric detector (3).

2. The optical fiber adapter detection light extraction device according to claim 1, characterized in that: It also includes a fixing seat (6) for connecting the flat cable (4) and the photoelectric detector (3).

3. The optical fiber adapter detection light extraction device according to claim 1, characterized in that: A filter film (5) is provided on the detection part of the photoelectric detector (3); the filter film (5) is plated by a physical or chemical method and has an anti-reflection effect in the detection light band while blocking other light signals from entering.

4. The optical fiber adapter detection light extraction device according to claim 1, characterized in that: The photoelectric detector (3) is a PD photoelectric detector.

5. The optical fiber adapter detection light extraction device according to claim 1, characterized in that: The width W of the light-transmitting groove (102) is 200 μm-500 μm.

6. The optical fiber adapter detection light extraction device according to claim 1, characterized in that: The angle between the inclined surface (203) at the front end of the pre-buried optical fiber (2) and the axial direction of the optical fiber is 30°-60°.

7. The optical fiber adapter detection light extraction device according to claim 2, characterized in that: A conical positioning groove (105) is provided at the upper end of the optical fiber seat (1) corresponding to the light-transmitting groove (102), and a conical positioning portion (601) adapted to the conical positioning groove (105) is provided at the bottom of the fixing seat (6).

8. The optical fiber adapter detection light extraction device according to claim 2, characterized in that: The fixing seat (6) is provided with two cable slots (602) extending vertically therethrough, and the bottom is provided with two photoelectric detector slots (603) communicating with the cable slots (602). The cable (4) is arranged in the cable slots (602) of the fixing seat (6), and the photoelectric detector (3) is arranged in the photoelectric detector slots (603) of the fixing seat (6).

9. The optical fiber adapter detection light extraction device according to claim 2, characterized in that: An elastic buckle (604) is provided on one of the opposite side surfaces of the fixing seat (6), and an elastic hook (605) is provided on the other opposite side surface.

10. An SC optical fiber adapter, implemented according to the optical fiber adapter detection light extraction device according to any one of claims 1 to 9, comprising a housing (10), a connector (11) installed in the housing (10), and a sleeve (12) installed in the connector (11), characterized in that: It also includes a fixing seat (6) for connecting the cable (4) and the photoelectric detector (3); the optical fiber seat (1) is installed in the sleeve (12), the connecting member (11) is installed on the fixing seat (6) through a second installation opening (14) arranged on the top, the sleeve (12) is inserted into the photoelectric detector (3) through a third installation opening (15) arranged on the top, so that the photoelectric detector (3) is arranged in the slot (104) of the optical fiber seat (1), and a first installation opening (13) is arranged on the top of the housing (10) so that an external terminal is connected to the fixing seat (6) and the cable (4).

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