CN116908971A - Optical path coupling equipment - Google Patents

Optical path coupling equipment Download PDF

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Publication number
CN116908971A
CN116908971A CN202310768981.3A CN202310768981A CN116908971A CN 116908971 A CN116908971 A CN 116908971A CN 202310768981 A CN202310768981 A CN 202310768981A CN 116908971 A CN116908971 A CN 116908971A
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CN
China
Prior art keywords
groove
optical fiber
channel
path coupling
hollow optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310768981.3A
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Chinese (zh)
Inventor
汪礼锋
林涵文
李孝燊
尉伟
贺志刚
吴国荣
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Shenzhen Integrated Particle Facility Research Institute
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Shenzhen Integrated Particle Facility Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Integrated Particle Facility Research Institute filed Critical Shenzhen Integrated Particle Facility Research Institute
Priority to CN202310768981.3A priority Critical patent/CN116908971A/en
Publication of CN116908971A publication Critical patent/CN116908971A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
    • G02B6/4221—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements involving a visual detection of the position of the elements, e.g. by using a microscope or a camera
    • G02B6/4222—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements involving a visual detection of the position of the elements, e.g. by using a microscope or a camera by observing back-reflected light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

The application provides optical path coupling equipment, and belongs to the technical field of laser communication. The light path coupling device comprises a limiting device, a box body, a hollow optical fiber, a reflecting mirror, a first connecting structure and a second connecting structure, wherein an installation channel is defined in the limiting device along a first direction, and a first groove, a second groove and at least one airflow channel which are communicated with the installation channel are formed in one side of the limiting device; an exit window is arranged on one side of the box body; the hollow optical fiber penetrates through the installation channel, a first through hole is formed in one side of the hollow optical fiber, and the air flow channel is communicated with the hollow optical fiber through the first through hole; the reflecting mirror is arranged in the box body, so that the laser which is injected into the first groove through the incident window can pass through the mounting channel and the second groove and then is emitted from the emergent window after being reflected by the reflecting mirror. The optical path coupling equipment provided by the application has the advantages of simple structure, easiness in operation, and capability of improving the success rate of the coupling process of laser and hollow optical fibers and prolonging the service life of the hollow optical fibers.

Description

Optical path coupling equipment
Technical Field
The application relates to the technical field of laser communication, in particular to optical path coupling equipment.
Background
The coherent deep ultraviolet/soft X-ray light source generated by a High-order harmonic (HHG) process can be used for measuring valence electrons and inner shell electron dynamics, exploring the material structure and energy band characteristics, controlling the magnetic material characteristics and researching the mesa deep ultraviolet lithography. Because of the strong absorption of deep ultraviolet/soft X-rays in air, HHG procedures need to be implemented in vacuum. In general, gas can enter the vacuum chamber to interact with the femtosecond laser in three ways, using a gas target, a gas nozzle, or a Hollow-core fiber (HCF) structure.
The port of the hollow optical fiber cannot be seen in the vacuum structure of the existing optical path coupling device, so that great uncertainty exists in the coupling process of the laser and the hollow optical fiber for the first time, the coupling efficiency is reduced, the HHG production efficiency is limited, and the hollow optical fiber is seriously damaged by femtosecond laser, so that the experiment is failed.
Disclosure of Invention
In view of the above, the present application aims to overcome the shortcomings in the prior art, and provides an optical path coupling device.
The application provides the following technical scheme: an optical path coupling apparatus comprising:
the limiting device is characterized in that an installation channel is defined in the limiting device along a first direction, and a first groove, a second groove and at least one airflow channel which are communicated with the installation channel are formed in one side of the limiting device;
the light source comprises a box body, wherein an exit window is arranged on one side of the box body;
the hollow optical fiber penetrates through the installation channel, a first through hole is formed in one side of the hollow optical fiber, and the air flow channel is communicated with the hollow optical fiber through the first through hole;
the box body is communicated with the first groove through the first connecting structure, one end of the second connecting structure is communicated with the second groove, and an incident window is arranged at the other end of the second connecting structure;
and a reflecting mirror disposed in the case so that the laser light incident to the first groove through the incident window can be emitted from the exit window through the mounting channel and the second groove after being reflected by the reflecting mirror.
In some embodiments of the application, the first groove and the second groove are disposed at both ends of the mounting channel, respectively, along the first direction.
Further, the air flow channels are arranged in two groups, and the two groups of air flow channels are arranged at intervals;
the two groups of air flow channels are positioned between the first groove and the second groove.
Further, one end of the hollow fiber is located in the first groove, and the other end of the hollow fiber is located in the second groove.
Further, a yielding groove is formed in one side of the limiting device, and the yielding groove is located between the two groups of air flow channels, so that the mounting channels are separated to form a first section and a second section through the yielding groove;
the hollow optical fiber penetrates through the abdication groove.
Further, a colloid is arranged at the connecting end between the first groove and the mounting channel so as to form a first sealing structure at one end of the mounting channel;
and a colloid is arranged at the connecting end between the second groove and the mounting channel so as to form a second sealing structure at the other end of the mounting channel.
Further, a colloid is arranged in the abdication groove so as to form a third sealing structure in the abdication groove, and the abdication groove is sealed through the third sealing structure;
the third sealing structure is wrapped around a portion of the hollow optical fiber.
Further, a position regulator is arranged in the box body, and the reflecting mirror is connected with the output end of the position regulator so as to control the reflecting mirror to move along the first direction through the output end of the position regulator.
Further, the axis of the hollow optical fiber, the axis of the mounting channel, the axis of the first connection structure, and the axis of the second connection structure all coincide.
Further, along the first direction, a lens is arranged on one side of the incident window, which is away from the box body.
Embodiments of the present application have the following advantages: by arranging the first groove and the second groove which are spaced at one side of the limiting device, a worker can conveniently glue and fix the hollow optical fiber, more importantly, the first groove and the second groove are used for observing whether laser passes through the hollow optical fiber or not, so that the worker can conveniently adjust the incidence angle of the laser according to the position of the laser and the hollow optical fiber, and the light path coupling equipment provided by the application has the advantages of simple structure, convenience in use and easiness in operation, and greatly improves the success rate of the coupling process of the laser and the hollow optical fiber and the service life of the hollow optical fiber.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a view angle of an optical coupling device according to some embodiments of the present application;
fig. 2 is a schematic structural view of a view angle of a limiting device in an optical path coupling apparatus according to some embodiments of the present application;
fig. 3 is a schematic structural view of another view of a limiting device in an optical path coupling apparatus according to some embodiments of the present application;
FIG. 4 shows a cross-sectional view of section A-A of FIG. 3;
fig. 5 is a schematic structural view of a limiting device in an optical path coupling apparatus according to another embodiment of the present application;
FIG. 6 shows a cross-sectional view of section B-B of FIG. 5;
FIG. 7 is a schematic diagram of another view of an optical coupling device according to some embodiments of the present application;
fig. 8 shows a cross-sectional view of the C-C portion of fig. 7.
Description of main reference numerals:
100-limiting devices; 110-a first groove; 120-a second groove; 130-air flow channel; 200-a box body; 300-an exit window; 400-hollow fiber; 410-a first through hole; 500-a first connection structure; 600-a second connection structure; 700—entrance window; 800-mirrors; 140-yielding slots; 900-position regulator; 1000-lens; 1100-guiding tube; 1200-supporting seat; 1300-transparent plate.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 8, some embodiments of the present application provide an optical path coupling device, which is mainly applied to improving the success rate in the coupling process of laser and hollow fiber, improving the service life of the hollow fiber, reducing the experimental cost, and improving the experimental efficiency.
The optical path coupling apparatus includes a limiting device 100, a case 200, a hollow optical fiber 400, and a reflecting mirror 800. It should be noted that, the limiting device 100 forms a limiting effect on the hollow optical fiber 400, so as to improve the stability of the hollow optical fiber 400 in the limiting device 100. In this embodiment, the box 200 is a vacuum box to ensure the collimation of the laser in the box 200.
Along the first direction, the limiting device 100 defines an installation channel, and it should be noted that the installation channel is a linear channel. Meanwhile, a first groove 110, a second groove 120 and at least one air flow channel 130, which are communicated with the installation channel, are formed at one side of the limiting device 100. It is understood that the number of the air flow channels 130 may be one, two or any number of more than two, and may be specifically set according to practical situations.
Specifically, in this embodiment, the first groove 110 and the second groove 120 are respectively disposed at two ends of the mounting channel, and the notch of the first groove 110 is oriented perpendicular to the first direction, and the notch of the second groove 120 is oriented perpendicular to the first direction.
The first direction refers to the axial direction of the mounting passage.
In addition, the air flow channel 130 may be provided at either side of the limiting device 100, and the air flow channel 130 is spaced between the first groove 110 and the second groove 120, so that external air can enter into the installation channel through the air flow channel 130.
In this embodiment, the case 200 is disposed on one side of the limiting device 100, and the case 200 is disposed on one side of the first groove 110 facing away from the second groove 120, and specifically, the case 200 is disposed in the first direction. An exit window 300 is provided at one side of the case 200 so that laser light entering the case 200 can be emitted through the exit window 300.
The hollow optical fiber 400 is disposed through the installation channel, a first through hole 410 is formed on one side of the hollow optical fiber 400, the air flow channel 130 is communicated with the hollow optical fiber 400 through the first through hole 410, and the outer wall of the vacuum optical fiber contacts with the inner wall of the installation channel, so as to improve the stability of the hollow optical fiber 400 in the installation channel.
It should be noted that the number of the first through holes 410 may be one, two or more than two, and may be specifically set according to practical situations.
Preferably, the aperture of the first through hole 410 is equal to the aperture of the air flow channel 130, and the axis of the first through hole 410 coincides with the axis of the air flow channel 130.
In this embodiment, the number of the first through holes 410 is equal to the number of the air flow channels 130, and one first through hole 410 communicates with one air flow channel 130.
In order to allow a worker to see whether laser light enters the hollow optic fiber 400 through the first groove 110 and the second groove 120 during the test, the length of the hollow optic fiber 400 is greater than or equal to the length of the installation channel in the first direction.
Preferably, the length of the hollow optical fiber 400 is greater than the length of the installation path in the first direction, that is, a portion of one end of the hollow optical fiber 400 near the first groove 110 is located in the first groove 110 and a portion of one end of the hollow optical fiber 400 near the second groove 120 is located in the second groove 120, so that a worker can determine whether laser light enters the hollow optical fiber 400 through the first groove 110 and the second groove 120, and at the same time, it is easy to adjust the incident angle of the laser light, thereby enabling the improvement of experimental efficiency.
As shown in fig. 1, 7 and 8, in some embodiments of the present application, the optical path coupling apparatus further includes a first connection structure 500 and a second connection structure 600, and the case 200 is in communication with the first groove 110 through the first connection structure 500, and it should be noted that the first connection structure 500 is in sealing connection with the first groove 110. The first connection structure 500 and the second connection structure 600 are all through connection structures.
Specifically, along the first direction, one end of the first connection structure 500 is disposed through the limiting device 100, so that the first connection structure 500 is communicated with the first groove 110, and the other end of the first connection structure 500 is disposed through the side wall of the case 200, so as to be communicated with the cavity inside the case 200.
In addition, one end of the second connection structure 600 communicates with the second groove 120. Specifically, along the first direction, the second connection structure 600 is disposed on a side of the limiting device 100 near the second groove 120, and one end of the second connection structure 600 is disposed through the limiting device 100 so as to be communicated with the second groove 120. Meanwhile, an incident window 700 is provided at the other end of the second connection structure 600, so that one end of the second connection structure 600 is sealed by the incident window 700 to form a sealing structure, so that external laser can be injected into the second connection structure 600 through the incident window 700.
It should be noted that, the axis of the first connection structure 500, the axis of the second connection structure 600, and the axis of the hollow optical fiber 400 coincide with the axis of the installation channel, so that the laser light can pass through the second connection structure 600, the second groove 120, the hollow optical fiber 400, the first groove 110, and the first connection structure 500 in this order in the first direction, and then enter the interior of the case 200.
Specifically, in this embodiment, the first connection structure 500 and the second connection structure 600 are vacuum connection pipes or other vacuum sealing structures.
By disposing the reflecting mirror 800 in the case 200, so that the laser light incident into the first groove 110 through the incident window 700 can pass through the hollow optical fiber 400 in the installation channel and the second groove 120 and be emitted from the exit window 300 after being reflected by the reflecting mirror 800, power and flare measurement can be performed outside the case 200, thereby judging whether the laser light is efficiently coupled into the hollow optical fiber 400.
In this embodiment, by arranging the first groove 110 and the second groove 120 on one side of the limiting device 100, a worker can monitor whether laser strikes the incident end surface of the hollow optical fiber 400 through the first groove 110 and the second groove 120 in the test process, so as to provide a practical criterion for adjusting the coupling of the hollow optical fiber 400, and greatly improve the efficiency and success rate of the process of coupling the femtosecond laser into the hollow optical fiber 400.
In the present embodiment, the shapes of the first groove 110 and the second groove 120 may be any one of polygonal columns, spheres, ellipsoids, or abnormal shapes, which may be specifically set according to practical situations.
In some embodiments of the present application, as shown in fig. 2, 5 and 6, the air flow channels 130 are two groups, the two groups of air flow channels 130 are spaced apart, and the two groups of air flow channels 130 are located between the first groove 110 and the second groove 120.
Since the number of the first through holes 410 is equal to the number of the air flow channels 130, that is, in this embodiment, the number of the first through holes 410 is two, one of the first through holes 410 is communicated with one air flow channel 130, the other first through hole 410 is communicated with the other air flow channel 130, the axis of the first through hole 410 coincides with the axis of the air flow channel 130, and the aperture of the first through hole 410 is equal to the aperture of the air flow channel 130, so that external air can enter into the hollow optical fiber 400 through the air flow channel 130 and the first through hole 410, thereby generating High-order harmonic (HHG), and the coherent deep ultraviolet/soft X-ray light source generated through the High-order harmonic process can be used for valence electron and inner shell layer electron dynamics measurement, exploration of material structure and energy band characteristics, manipulation of magnetic material characteristics, and mesa deep ultraviolet lithography research.
The experiment for generating HHG was carried out by focusing a femtosecond laser beam to 10 14 -10 16 W/cm 2 A range, interacting with the gas, produces a coherent deep ultraviolet/soft X-ray source by a high order nonlinear process.
Preferably, in some embodiments, a guiding tube 1100 is disposed on a side of the limiting device 100 where the airflow channels 130 are disposed, one end of the guiding tube 1100 is in sealing connection with the limiting device 100, and the number of the guiding tubes 1100 is equal to that of the airflow channels 130, one guiding tube 1100 is correspondingly communicated with one airflow channel 130, and the axis of the guiding tube 1100 coincides with the axis of the airflow channel 130, and the axis of the airflow channel 130 is perpendicular to the first direction.
It should be noted that, in the present embodiment, two air flow channels 130 are disposed on the same side of the limiting device 100. In addition, in other embodiments, two air flow channels 130 are provided on two opposite sides of the spacing device 100. Can be specifically set according to the actual situation.
In some embodiments, the axis of the airflow channel 130 is at an acute angle to the axis of the mounting channel.
As shown in fig. 4 and 6, in some embodiments of the present application, one end of the hollow optical fiber 400 is positioned in the first groove 110, and the other end of the hollow optical fiber 400 is positioned in the second groove 120.
It can be appreciated that one end of the hollow optical fiber 400 is at least partially disposed in the first groove 110, so that a worker can observe the portion of the hollow optical fiber 400 disposed in the first groove 110 through the notch of the first groove 110, and thus, when laser passes through the hollow optical fiber 400 or is injected into the hollow optical fiber 400, the worker can clearly observe whether the laser passes through the hollow optical fiber 400, thereby effectively improving the accuracy and efficiency of the experiment.
It should be noted that, since the existing gluing process is divided into two parts, the hollow optical fiber 400 is glued first through the side grooves. After the gel is solidified (typically 24 hours), the hollow fiber 400 is glued by erecting a vacuum jig from the vacuum tube. If the gel is not solidified, the vacuum clamp is erected, and glue is applied from the vacuum tube and the vacuum tube, so that the hollow optical fiber 400 may be misplaced or slid, and the air inlet of hundred micrometers may be positionally shifted, which may cause the air inlet effect to be reduced and the experiment to fail.
Further, the connection end between the first groove 110 and the installation channel is provided with a glue, so that a first sealing structure is formed at one end of the installation channel, and the first sealing structure surrounds the circumference of the hollow optical fiber 400, so that the first groove 110 and one end of the installation channel, which is close to the first groove 110, are sealed by the first sealing structure, so as to prevent the gas in the gas flow channel 130 from entering the first groove 110 through the installation channel. Meanwhile, a colloid is disposed at the connection end between the second groove 120 and the installation channel, so as to form a second sealing structure at the other end of the installation channel, and the second sealing structure surrounds the circumference of the hollow optical fiber 400, so that the second groove 120 and one end of the installation channel, which is close to the second groove 120, are sealed by the second sealing structure, so that the gas in the gas flow channel 130 is prevented from entering the second groove 120 through the installation channel.
Through set up first recess 110 and second recess 120 on stop device, can guarantee like this that stop device 100 is when the level is placed, be convenient for carry out the rubber coating through first recess 110 and second recess 120 to can accomplish the process of rubber coating under the condition of not changing the position of hollow optic fibre 400, not only can promote the accuracy of rubber coating like this, but also can reduce the flow of rubber coating, promote the efficiency of rubber coating, shorten the time that needs wait after the rubber coating, thereby guarantee the accuracy nature of experiment.
Further, a first mounting table is provided at an edge of the notch of the first groove 110 and a second mounting table is provided at an edge of the notch of the second groove 120, the notch of the first groove 110 is provided with a transparent plate, and the transparent plate 1300 is disposed on the first mounting table to seal the notch of the first groove 110 by the transparent plate to define the first groove 110 into a first sealed cavity. In addition, a transparent plate 1300 is provided at the notch of the second groove 120, and the transparent plate is disposed on the second mounting table to seal the notch of the second groove 120 through the transparent plate to define the second groove 120 into a second sealed cavity. This can prevent outside air from entering the first groove 110 and the second groove 120, while a worker can observe the laser light in the first groove 110 and the second groove 120 through the transparent plate.
The transparent plate 1300 in this embodiment may include any of transparent glass, transparent acryl plate, and transparent silica gel, and may be specifically set according to practical situations.
As shown in fig. 2, 3, 4 and 6, in some embodiments of the present application, a relief groove 140 is formed on one side of the limiting device 100, and it should be noted that the relief groove 140 is located between two sets of the airflow channels 130, and a space is provided between the relief groove 140 and the airflow channels 130.
The first section and the second section are formed by separating the installation channel by the relief groove 140, it is understood that the first section and the second section of the installation channel are communicated by the relief groove 140, and the hollow optical fiber 400 is inserted into the relief groove 140, that is, a portion of the hollow optical fiber 400 is located in the relief groove 140.
Further, in some embodiments of the present application, a gel is disposed in the relief groove 140, and the gel wraps a portion of the hollow optical fiber 400, and forms a third sealing structure in the relief groove 140, so that the relief groove 140 is sealed by the third sealing structure, and a portion of the relief groove 140 in communication with the air flow channel 130 is sealed by the third sealing structure, by which the hollow optical fiber 400 located in the relief groove 140 can be wrapped and sealed, so as to prevent external air from entering into the installation channel through the relief groove 140.
Further, the colloid is disposed in the abdication groove 140, so that the hollow optical fiber 400 is limited and fixed by the colloid, so that the displacement of the hollow optical fiber 400 in the installation channel is avoided, and the stability of the hollow optical fiber 400 in the installation channel is improved.
The limiting structure is sealed through the first sealing structure, the second sealing structure and the third sealing structure, so that accuracy in the test process is improved.
It should be noted that in some embodiments of the present application, the gel is a transparent vacuum gel.
As shown in fig. 8, in some embodiments of the present application, a position adjuster 900 is provided inside the case 200, the position adjuster 900 is provided at the bottom inside the case 200, and the mirror 800 is connected to an output end of the position adjuster 900 to control the mirror 800 to move in the first direction through the output end of the position adjuster 900, specifically, when laser light is incident on the mirror 800, the position of the mirror is adjusted by the position adjuster 900 to adjust the position of the laser light reflected by the mirror 800 at the exit window 300, so that the reflected laser light can be guided out of the exit window 300.
Optionally, in some embodiments, the position adjuster 900 is a sliding assembly that includes a sliding rail (not shown) and a slider (not shown).
The sliding rail is arranged along the first direction, the sliding block is in sliding connection with the sliding rail, and it can be understood that the sliding block can slide on the sliding rail along the first direction.
By connecting the reflecting mirror 800 with the slider, the reflecting mirror 800 is driven to move along the first direction by the slider, so that the position of the laser light reflected by the reflecting mirror 800 by the laser light entering the case 200 through the first connection structure 500 is adjusted, so that the laser light reflected by the reflecting mirror 800 can be emitted through the exit window 300.
As shown in fig. 1, 7 and 8, in some embodiments of the present application, the optical path coupling apparatus further includes a supporting seat 1200, and the supporting seat 1200 is disposed at one side of the limiting device 100, so as to provide a supporting effect to the limiting device 100 through the supporting seat 1200, so as to improve stability of the limiting device 100.
As shown in fig. 1, in some embodiments of the present application, the entrance window 700 and the exit window 300 are designed according to the visible light band, specifically, the entrance window 700 and the exit window 300 may be made of glass or fused silica, and the shape of the entrance window 700 and the exit window 300 may be any one of polygonal, circular, elliptical or special-shaped, which may be specifically set according to practical situations.
As shown in fig. 1, 7 and 8, in some embodiments of the present application, a lens 1000 is disposed on a side of the incident window 700 facing away from the case 200 along the first direction, and the laser light is focused by the lens 1000, so that the laser light focused by the lens 1000 can pass through the hollow optical fiber 400 through the incident window 700.
Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.

Claims (10)

1. An optical path coupling apparatus, comprising:
the limiting device is characterized in that an installation channel is defined in the limiting device along a first direction, and a first groove, a second groove and at least one airflow channel which are communicated with the installation channel are formed in one side of the limiting device;
the light source comprises a box body, wherein an exit window is arranged on one side of the box body;
the hollow optical fiber penetrates through the installation channel, a first through hole is formed in one side of the hollow optical fiber, and the air flow channel is communicated with the hollow optical fiber through the first through hole;
the box body is communicated with the first groove through the first connecting structure, one end of the second connecting structure is communicated with the second groove, and an incident window is arranged at the other end of the second connecting structure;
and a reflecting mirror disposed in the case so that the laser light incident to the first groove through the incident window can be emitted from the exit window through the mounting channel and the second groove after being reflected by the reflecting mirror.
2. The optical path coupling apparatus according to claim 1, wherein the first groove and the second groove are provided at both ends of the mounting channel, respectively, in the first direction.
3. The optical path coupling apparatus according to claim 1, wherein the air flow channels are arranged in two groups, and the two groups of the air flow channels are arranged at intervals;
the two groups of air flow channels are positioned between the first groove and the second groove.
4. The optical path coupling apparatus according to claim 1, wherein one end of the hollow optical fiber is located in the first groove, and the other end of the hollow optical fiber is located in the second groove.
5. The optical path coupling apparatus according to claim 1, wherein a relief groove is provided on one side of the limiting device, the relief groove being located between two sets of the air flow channels, so as to partition the mounting channels by the relief groove to form a first section and a second section;
the hollow optical fiber penetrates through the abdication groove.
6. The optical path coupling apparatus according to claim 1, wherein a connection end between the first groove and the mounting channel is provided with a gel to form a first sealing structure at one end of the mounting channel;
and a colloid is arranged at the connecting end between the second groove and the mounting channel so as to form a second sealing structure at the other end of the mounting channel.
7. The optical path coupling apparatus according to claim 5, wherein a colloid is provided in the relief groove to form a third sealing structure in the relief groove, and the relief groove is sealed by the third sealing structure;
the third sealing structure is wrapped around a portion of the hollow optical fiber.
8. The optical path coupling apparatus according to any one of claims 1 to 7, wherein a position regulator is provided inside the housing, and the reflecting mirror is connected to an output end of the position regulator to control the movement of the reflecting mirror in the first direction through the output end of the position regulator.
9. The optical path coupling apparatus according to any one of claims 1 to 7, wherein an axis of the hollow optical fiber, an axis of the mounting channel, an axis of the first connection structure, and an axis of the second connection structure all coincide.
10. The optical path coupling apparatus according to any one of claims 1 to 7, wherein a side of the entrance window facing away from the housing is provided with a lens in the first direction.
CN202310768981.3A 2023-06-27 2023-06-27 Optical path coupling equipment Pending CN116908971A (en)

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CN202310768981.3A CN116908971A (en) 2023-06-27 2023-06-27 Optical path coupling equipment

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CN202310768981.3A CN116908971A (en) 2023-06-27 2023-06-27 Optical path coupling equipment

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