CN219641976U - Optical fiber coupling debugging structure - Google Patents

Optical fiber coupling debugging structure Download PDF

Info

Publication number
CN219641976U
CN219641976U CN202320102422.4U CN202320102422U CN219641976U CN 219641976 U CN219641976 U CN 219641976U CN 202320102422 U CN202320102422 U CN 202320102422U CN 219641976 U CN219641976 U CN 219641976U
Authority
CN
China
Prior art keywords
laser
optical fiber
total reflection
reflection mirror
red light
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.)
Active
Application number
CN202320102422.4U
Other languages
Chinese (zh)
Inventor
杨欣
杨洪铖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Meige Medical Technology Co ltd
Original Assignee
Ningbo Meige Medical Technology Co ltd
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 Ningbo Meige Medical Technology Co ltd filed Critical Ningbo Meige Medical Technology Co ltd
Priority to CN202320102422.4U priority Critical patent/CN219641976U/en
Application granted granted Critical
Publication of CN219641976U publication Critical patent/CN219641976U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Optical Couplings Of Light Guides (AREA)

Abstract

The utility model relates to an optical fiber coupling debugging structure which comprises a laser, an optical fiber, a coupling head, a red light laser, a first total reflection mirror and a second total reflection mirror, wherein the coupling head is arranged at the first end of the optical fiber and is used for coupling laser output by the laser into the optical fiber. The position of the output light of the red light laser on the second full-return mirror and the first full-return mirror can be marked as A, B, the position of the output laser of the laser on the first full-return mirror and the second full-return mirror can be marked as C, D, the angle of the second full-return mirror is adjusted so that the point B is overlapped with the point C, the angle of the first full-return mirror is adjusted so that the point D is overlapped with the point A, at the moment, the output laser of the laser is overlapped with the red light reference light coupled and output by the optical fiber, the red light reference light is emitted from the center of the optical fiber, and the laser can be incident to the center of the optical fiber according to the principle of reversibility of the optical path; the utility model has simple and reasonable structure, can realize high-precision adjustment and is convenient to operate.

Description

Optical fiber coupling debugging structure
Technical Field
The utility model relates to an optical fiber coupling debugging structure.
Background
The common optical fiber coupling debugging method is that firstly, laser to be coupled to an optical fiber is overlapped with a low-power visible reference light, then the reference light is debugged and coupled into the optical fiber, and finally, the laser is finely tuned to ensure that the optical fiber coupling output is optimal.
The obvious disadvantage of the above method is that it is difficult to ensure that the laser light is incident on the center of the fiber. The optical fiber coupling output effect of the low-power laser debugging is good; however, for the optical fiber coupling of the high-power laser, because the output beam mode is different from that of the high-power laser, the focusing light spot is larger through the coupling lens under the high power, if the debugging laser is not incident to the center of the optical fiber under the low power, the laser is easy to be incident to the edge of the optical fiber under the high power to damage the optical fiber.
Therefore, for the current optical fiber coupling debugging structure, further improvement is needed.
Disclosure of Invention
Aiming at the current state of the art, the utility model provides the optical fiber coupling debugging structure which can ensure that laser is incident to the center of an optical fiber so as to avoid damaging the optical fiber and has high adjusting precision.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides an optic fibre coupling debugging structure, includes laser instrument, optic fibre and coupling head, the coupling head is located optic fibre first end department, is arranged in the laser coupling of laser instrument output to optic fibre, still includes:
the red light laser is arranged at the second end of the optical fiber and is used for inputting red light into the optical fiber; the direction of outputting red light at the first end of the optical fiber is parallel to the direction of outputting laser light by the laser;
the first total reflection mirror is movably arranged on a light path of laser output laser;
the second total reflection mirror is movably arranged on the optical path of the red light output by the first end of the optical fiber and is arranged in parallel with the first total reflection mirror.
Preferably, a first focusing lens is arranged between the second total reflection mirror and the coupling head, and is used for focusing the light emitted by the laser and then making the light enter the optical fiber.
Preferably, the red light laser comprises a 650nm semiconductor laser and a second focusing lens which are sequentially arranged along the output direction of the red light, and the red light laser is detachably connected with the second end of the optical fiber. The 650nm semiconductor laser is a low-power optical fiber coupled output red light laser, and the low-power optical fiber coupled output visible light is realized by matching the red light laser with the second focusing lens.
Preferably, the first total reflection mirror and the second total reflection mirror are 45-degree total reflection mirrors. The total reflection mirror is adopted to realize the light path arrangement between the red light laser and the laser, and the light path of the laser to be coupled is further finely adjusted by utilizing the light path reversibility principle so as to ensure that the laser can be incident to the center of the optical fiber.
Preferably, the first total reflection mirror is used for receiving red light output by the red laser and marking as B, receiving laser output by the laser and marking as C, the second total reflection mirror is used for receiving red light output by the red laser and marking as A, receiving laser output by the laser and marking as D, and the positions of the first total reflection mirror and the second total reflection mirror are kept at the positions where B and C coincide and where A and D coincide. The positions of the first total reflection mirror and the second total reflection mirror are adjusted at the position, so that the requirement that laser energy is incident to the center of the optical fiber can be met.
Preferably, the bottom of the first total reflection mirror and/or the second total reflection mirror is provided with a base capable of driving the first total reflection mirror and/or the second total reflection mirror to rotate. By adopting the structure, the angle of the first total reflection mirror and/or the second total reflection mirror can be conveniently adjusted, so that the requirement of adjusting the direction of the light path is met.
Compared with the prior art, the utility model has the advantages that: the position of the output light of the red light laser on the second full-return mirror and the first full-return mirror can be marked as A, B, the position of the output laser of the laser on the first full-return mirror and the second full-return mirror can be marked as C, D, the angle of the second full-return mirror is adjusted so that the point B is overlapped with the point C, the angle of the first full-return mirror is adjusted so that the point D is overlapped with the point A, at the moment, the output laser of the laser is overlapped with the red light reference light coupled and output by the optical fiber, the red light reference light is emitted from the center of the optical fiber, and the laser can be incident to the center of the optical fiber according to the principle of reversibility of the optical path; the utility model has simple and reasonable structure, can realize high-precision adjustment and is convenient to operate.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a propagation path of light emitted from a laser according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of a part of a propagation optical path of a red laser according to an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 3, the optical fiber coupling debugging structure of the present embodiment includes a laser 1, an optical fiber 6, and a coupling head 5, where the coupling head 5 is disposed at a first end of the optical fiber 6 and is used for coupling laser output by the laser 1 into the optical fiber.
The embodiment is also provided with a red laser, a first total reflection mirror 2 and a second total reflection mirror 3.
Wherein, the red light laser is arranged at the second end of the optical fiber 6 and is used for entering red light into the optical fiber 6; the direction of the red light output by the first end of the optical fiber 6 is parallel to the direction of the laser light output by the laser 1. The red laser of the present embodiment includes a 650nm semiconductor laser 8, a second focusing lens 7, which are disposed in order along the red light output direction, the red laser being detachably connected to the second end of the optical fiber 6. The 650nm semiconductor laser 8 is a low-power optical fiber coupled-out red light laser, and is matched with the second focusing lens 7 to realize optical fiber coupling-out low-power visible light.
The first total reflection mirror 2 is movably arranged on a light path of laser 1 for outputting laser light; the second total reflection mirror 3 is movably arranged on the optical path of the red light output by the first end of the optical fiber 6 and is arranged in parallel with the first total reflection mirror 2. The first total reflection mirror 2 and the second total reflection mirror 3 in this embodiment are all 45-degree total reflection mirrors. The total reflection mirror is adopted to realize the light path arrangement between the red light laser and the laser 1, and the light path of the laser to be coupled is further finely adjusted by utilizing the light path reversibility principle so as to ensure that the laser can be incident to the center of the optical fiber 6.
A first focusing lens 4 is disposed between the second total reflection mirror 3 and the coupling head 5 in this embodiment, and is configured to focus the light emitted from the laser 1 and then make the light incident into the optical fiber 6.
The red laser coupled and output by the optical fiber is coupled and outputs red reference light through the optical fiber to be incident to the first focusing lens 4 through the coupling head, and then is incident to the laser 1 to be coupled with output laser into the optical fiber through the second full-return mirror 3 and the first full-return mirror 2 in sequence.
When the optical fiber coupling is debugged, the first total reflecting mirror 2 is used for receiving red light output by the red light laser and marking as B, receiving laser output by the laser 1 and marking as C, the second total reflecting mirror 3 is used for receiving red light output by the red light laser and marking as A, receiving laser output by the laser 1 and marking as D, firstly, the second total reflecting mirror 3 is regulated, then the first total reflecting mirror 2 is regulated, so that the positions of the first total reflecting mirror 2 and the second total reflecting mirror 3 are kept at the position where B coincides with C and the position where A coincides with D, at the moment, the laser output laser coincides with red reference light output by the optical fiber coupling, the red reference light is emitted from the center of the optical fiber, and according to the principle of reversibility of an optical path, the positions of the first total reflecting mirror 2 and the second total reflecting mirror 3 are regulated at the position where the laser can be incident on the center of the optical fiber.
In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims (4)

1. The utility model provides a fiber coupling debugging structure, includes laser instrument, optic fibre and coupling head, the coupling head is located optic fibre first end department, is arranged in the laser coupling of laser instrument output to optic fibre, its characterized in that: and also comprises
The red light laser is arranged at the second end of the optical fiber and is used for inputting red light into the optical fiber; the direction of outputting red light at the first end of the optical fiber is parallel to the direction of outputting laser light by the laser;
the first total reflection mirror is movably arranged on a light path of laser output laser;
the second total reflection mirror is movably arranged on a light path of the red light output by the first end of the optical fiber and is arranged in parallel with the first total reflection mirror;
the first total reflection mirror and the second total reflection mirror are 45-degree total reflection mirrors.
2. The fiber coupling debug structure of claim 1, wherein: and a first focusing lens is arranged between the second total reflection mirror and the coupling head and used for focusing the light rays emitted by the laser and then making the light rays incident into the optical fiber.
3. The fiber coupling debug structure of claim 2, wherein: the red light laser comprises a 650nm semiconductor laser and a second focusing lens which are sequentially arranged along the output direction of the red light, and the red light laser is detachably connected with the second end of the optical fiber.
4. A fibre-coupled debug structure according to claim 1 or 2 or 3, wherein: the bottom of the first total reflection mirror and/or the second total reflection mirror is provided with a base capable of driving the first total reflection mirror and/or the second total reflection mirror to rotate.
CN202320102422.4U 2023-02-02 2023-02-02 Optical fiber coupling debugging structure Active CN219641976U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320102422.4U CN219641976U (en) 2023-02-02 2023-02-02 Optical fiber coupling debugging structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320102422.4U CN219641976U (en) 2023-02-02 2023-02-02 Optical fiber coupling debugging structure

Publications (1)

Publication Number Publication Date
CN219641976U true CN219641976U (en) 2023-09-05

Family

ID=87814851

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320102422.4U Active CN219641976U (en) 2023-02-02 2023-02-02 Optical fiber coupling debugging structure

Country Status (1)

Country Link
CN (1) CN219641976U (en)

Similar Documents

Publication Publication Date Title
CN103293649B (en) Lens optical equipment and light path transmission method based on lens optical equipment
CN111082298B (en) Automatic light path collimation method of off-axis eight-pass amplification laser system
CN110895364B (en) High-coupling-efficiency fiber laser debugging device and method
CN219641976U (en) Optical fiber coupling debugging structure
CN206010166U (en) A kind of multifunctional unit modularized laser light path system
CN113376766A (en) Light path beam combining and optical fiber coupling device of space light laser
CN110456521B (en) Light path system for aligning, installing and adjusting unstable cavity solid laser
CN114235344B (en) Debugging device and method for laser resonant cavity mirror
KR20000067535A (en) Optical module
He et al. Analysis of contributing factors in coupling from laser diode into optical fiber
CN211293369U (en) High-coupling-efficiency optical fiber laser debugging device
CN103499890B (en) Multikilowatt collimation-type isolator
CN219737839U (en) Low-power mid-infrared laser optical fiber space coupling device
CN2794721Y (en) Girdling light guide system
CN1145051C (en) Laser diode with wide emitting surface and single-mode optical fibre coupler
CN107608037B (en) Optical fiber coupling device applied to loop-mediated isothermal amplification
CN217689613U (en) Optical path system of rapid scanning device
CN202837616U (en) Structure capable of coupling beams of two semiconductor lasers
CN201935695U (en) Axicon lens reflective type laser demarcation device for three-dimensional spectroscopy by double square prisms
CN219900642U (en) Focusing light path for laser welding
CN105651779B (en) Reflective laser multiband focusing device
CN220341675U (en) High polarization ratio optical fiber coupled laser capable of monitoring power
CN216177550U (en) Portable laser
CN215219332U (en) Light guide arm parallel light hand tool
CN2525542Y (en) Duplex focusing device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant