CN218482857U - Miniature high reverse isolation divides light splitting detector - Google Patents
Miniature high reverse isolation divides light splitting detector Download PDFInfo
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- CN218482857U CN218482857U CN202222658903.1U CN202222658903U CN218482857U CN 218482857 U CN218482857 U CN 218482857U CN 202222658903 U CN202222658903 U CN 202222658903U CN 218482857 U CN218482857 U CN 218482857U
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Abstract
The utility model relates to a micro high reverse isolation light splitting detector, which comprises a double optical fiber head; after light beams input by the input end of the double-fiber head pass through the light splitting sheet, reflected light beams are received by the output end of the double-fiber head, and transmitted light beams are received by the detector after passing through the small through holes formed in the metal ring; the double optical fiber heads are arranged obliquely to the metal ring; the metal ring is arranged coaxially with the detector. The utility model discloses a becket is used for blocking the backward light beam that the output got into, shields the light beam that absorbs the output and reflect once more simultaneously, avoids its measurement to the detector to cause the interference, improves reverse isolation degree, realizes the transmission of light through utilizing little through-hole, the effectual problem of solving reflection light. The use of the metal ring and the special lens ensures that the light splitting detector has high reverse isolation; in addition, the special design of the metal tube seat ensures the reliability of the light splitting detection device.
Description
Technical Field
The utility model relates to an optical fiber communication field especially relates to a miniature high reverse isolation divides light detector.
Background
The TAP PD is widely used in optical fiber communication systems, and the optical splitter is one of optical power detectors, and obtains optical signal information of the entire optical transmission line by monitoring the power of an optical signal in the optical transmission line on line, thereby monitoring and managing the power of the optical signal.
The existing light splitting detector has a large outer diameter, is not beneficial to the use of a miniaturized module, and in addition, the traditional optical power detector does not limit the light reflected back through an output optical fiber, namely the reverse isolation, so that the interference is caused on the measurement result of the detector, and the measurement precision is influenced. Therefore, it is an urgent technical problem to be solved in the art to realize the microminiaturization of the spectroscopic detector and to improve the reverse isolation.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the above problems in the prior art, the utility model provides a miniature high reverse isolation divides light detector.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
a miniature high reverse isolation photodetector, comprising: comprises a dual optical fiber head; after light beams input by the input end of the double-fiber head pass through the light splitting sheet, reflected light beams are received by the output end of the double-fiber head, and transmitted light beams are received by the detector after passing through the small through holes formed in the metal ring; the double optical fiber heads are arranged obliquely to the metal ring; the metal ring and the detector are coaxially arranged.
Further, the double optical fiber head is sealed and arranged in the glass tube.
Furthermore, a double-optical-fiber head, a lens, a light splitting piece and a metal tube seat are sequentially arranged in the glass tube from left to right.
Furthermore, a metal ring and a detector are sequentially arranged in the metal tube seat from left to right.
Further, the metal pipe seat comprises a connecting part which is used for being inserted into the glass pipe and fixedly connected with the glass pipe and an extending part which is arranged opposite to the end part of the glass pipe.
Further, the outer diameter of the extension part is the same as that of the glass tube.
Further, the metal ring is arranged in the connecting part; the detector is disposed within the extension.
Further, the double optical fiber heads are fixedly connected with the lens; the lens seal is disposed within the glass tube.
Furthermore, a lens, a light splitting sheet and a metal ring are sequentially arranged in the glass tube from left to right.
Furthermore, the right end of the glass tube is coaxially arranged on the left side of the metal tube seat, and an outer sealing tube is sleeved outside the left end of the glass tube; and a detector is arranged in the metal tube seat and positioned on the right side of the metal ring.
Further, the lens is a high gradient index self-focusing lens; the light splitting sheet is arranged on the end face of the lens.
(III) advantageous effects
The beneficial effects of the utility model are that: the metal ring is used for blocking the reverse light beam entering from the output end, simultaneously shields and absorbs the light beam reflected by the output end again, avoids the interference to the measurement of the detector, improves the reverse isolation degree, realizes the transmission of light rays by utilizing the small through hole, and effectively solves the problem of reflected light rays. Meanwhile, after the input light is debugged into the small through hole, the obliquely arranged structure of the obliquely arranged double-fiber head can also effectively prevent the reflected light; the high-gradient-refractive-index self-focusing lens is adopted, and a large included angle of two beams is formed, so that the high reverse isolation degree can be ensured on a very small size; the use of the metal ring and the special lens ensures that the light splitting detector has high reverse isolation; in addition, the reliability of the light splitting detection device is ensured by the special design of the metal tube seat.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;
[ description of reference ]
1-double optical fiber head, 11-input end, 12-output end, 2-lens, 3-beam splitter, 4-glass tube, 5-metal ring, 51-small through hole, 6-metal tube seat, 61-connecting part, 62-extending part, 7-detector and 8-outer sealing tube.
Detailed Description
To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. 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 of 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
In the first embodiment, please refer to fig. 1:
a miniature high reverse isolation light splitting detector comprises a double optical fiber head 1; after the light beam input by the input end 11 of the double-optical-fiber head 1 passes through the light splitting sheet 3, the reflected light beam is received by the output end 12 of the double-optical-fiber head 1, and the transmitted light beam is received by the detector 7 after passing through the small through hole 51 arranged on the metal ring 5; the double optical fiber head 1 is arranged obliquely to the metal ring 5; the metal ring 5 is arranged coaxially with the detector 7. The double optical fiber head 1 is hermetically arranged in the glass tube 4. The double-optical-fiber head 1, the lens 2, the light splitting sheet 3 and the metal tube seat 6 are sequentially arranged in the glass tube 4 from left to right. And a metal ring 5 and a detector 7 are sequentially arranged in the metal tube seat 6 from left to right. The lens 2 is a high gradient index self-focusing lens. The light splitting sheet 3 is arranged on the end face of the lens 2. The metal stem 6 includes a connecting portion 61 for inserting and fixedly connecting the glass tube 4 and an extending portion 62 disposed opposite to the end of the glass tube 4. The outer diameter of the extension 62 is the same as that of the glass tube 4. The metal ring 5 is arranged in the connecting part 61; the detector 7 is disposed within the extension 62.
The input light beam firstly passes through the lens 2, a high-gradient refractive index self-focusing lens is adopted, a large double-light-beam included angle is formed, and high reverse isolation can be guaranteed on the very small size. When an input light beam passes through the light splitting sheet 3, one part of light is received by the output end 12 after being reflected, the other part of light is transmitted through the light splitting sheet 3 and then is output backwards, because the metal ring 5 is provided with the small through hole 51 through which the input light can pass, and the outside of the small through hole 51 is the body of the metal ring 5, the small through hole can effectively block a reverse light beam entering from the output end 12, and can shield and absorb the light beam reflected again from the output end, only the light beam transmitted through the light splitting sheet 3 after being calibrated is output to the detector 7, so that the problem of reflected light is effectively solved. In addition, the special design of the metal tube seat ensures the reliability of the light splitting detection device.
Example two, described with reference to fig. 2:
a miniature high reverse isolation light splitting detector comprises a double optical fiber head 1; after the light beam input by the input end 11 of the double-optical-fiber head 1 passes through the light splitting sheet 3, the reflected light beam is received by the output end 12 of the double-optical-fiber head 1, and the transmitted light beam is received by the detector 7 after passing through the small through hole 51 arranged on the metal ring 5; the double optical fiber head 1 is arranged obliquely to the metal ring 5; the metal ring 5 is arranged coaxially with the detector 7. The double optical fiber head 1 is fixedly connected with the lens 2; the lens 2 is hermetically arranged in a glass tube 4. The lens 2, the light splitting sheet 3 and the metal ring 5 are sequentially arranged in the glass tube 4 from left to right; the lens is a high gradient refractive index self-focusing lens; the light splitting piece 3 is arranged on the end face of the lens 2. The right end of the glass tube 4 is coaxially arranged at the left side of the metal tube seat 6, and an outer sealing tube 8 is sleeved outside the left end of the glass tube 4; and a detector 7 is arranged on the right side of the metal ring 5 in the metal tube seat 6.
Compared with embodiment 1, the embodiment is more convenient to install and debug when having the same reverse isolation effect and reliability, and specifically comprises the following steps: firstly fix detector 7 in the metal tube seat 6 right side, fix the becket 5 in the glass tube 4 right side, fix the glass tube 4 in the metal tube seat 6 left side, the beam splitter 3 pastes on lens 2, debug first two optical fiber head 1 and lens 2 with the reverberation of beam splitter 3, debug two optical fiber head 1 transmission light again, be fixed in glass tube 4, at last with glass tube 4 outside cover outer envelope 8 for whole device is sealed. Due to the connection structure of the embodiment 2, the debugging method is convenient and rapid to install, and more debugging operation space is provided. The debugging and installation efficiency can be effectively improved.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. A miniature high reverse isolation photodetector, comprising: comprises a dual optical fiber head; after light beams input by the input end of the double optical fiber head pass through the light splitting sheet, reflected light beams are received by the output end of the double optical fiber head, and transmitted light beams are received by the detector after passing through the small through holes formed in the metal ring; the double optical fiber heads are arranged obliquely to the metal ring; the metal ring is arranged coaxially with the detector.
2. The micro high reverse isolation photodetector of claim 1, wherein: the double optical fiber heads are arranged in the glass tube in a sealing mode.
3. The micro high reverse isolation photodetector of claim 2, wherein: and a double-fiber head, a lens, a beam splitter and a metal tube seat are sequentially arranged in the glass tube from left to right.
4. A miniature high reverse isolation photodetector as claimed in claim 3, wherein: and a metal ring and a detector are sequentially arranged in the metal tube seat from left to right.
5. A miniature high reverse isolation photodetector as claimed in claim 3, wherein: the metal pipe seat comprises a connecting part which is used for being inserted into the glass pipe and is fixedly connected with the glass pipe and an extending part which is arranged opposite to the end part of the glass pipe.
6. The micro high reverse isolation photodetector of claim 5, wherein: the outer diameter of the extension part is the same as that of the glass tube; the metal ring is arranged in the connecting part; the detector is disposed within the extension.
7. The micro high reverse isolation photodetector of claim 1, wherein: the double optical fiber heads are fixedly connected with the lens; the lens seal is disposed within the glass tube.
8. A miniature high reverse isolation photodetector as claimed in claim 7, wherein: and the glass tube is internally provided with a lens, a beam splitter and a metal ring in sequence from left to right.
9. The micro high reverse isolation photodetector of claim 7, wherein: the right end of the glass tube is coaxially arranged on the left side of the metal tube seat, and an outer sealing tube is sleeved outside the left end of the glass tube; and a detector is arranged in the metal tube seat and positioned on the right side of the metal ring.
10. A micro high reverse isolation photodetector as claimed in claim 3 or 7, wherein: the lens is a high gradient refractive index self-focusing lens; the light splitting sheet is arranged on the end face of the lens.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022225959421 | 2022-09-29 | ||
| CN202222595942 | 2022-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218482857U true CN218482857U (en) | 2023-02-14 |
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ID=85168868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222658903.1U Active CN218482857U (en) | 2022-09-29 | 2022-10-10 | Miniature high reverse isolation divides light splitting detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218482857U (en) |
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2022
- 2022-10-10 CN CN202222658903.1U patent/CN218482857U/en active Active
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