CN111658139B - Optical fiber mode disturbing unit, medical optical fiber based on optical fiber mode disturbing unit and application - Google Patents
Optical fiber mode disturbing unit, medical optical fiber based on optical fiber mode disturbing unit and application Download PDFInfo
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- CN111658139B CN111658139B CN202010470452.1A CN202010470452A CN111658139B CN 111658139 B CN111658139 B CN 111658139B CN 202010470452 A CN202010470452 A CN 202010470452A CN 111658139 B CN111658139 B CN 111658139B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 138
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 230000023597 hemostasis Effects 0.000 claims abstract description 13
- 238000002679 ablation Methods 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000002439 hemostatic effect Effects 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 238000005253 cladding Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000010453 quartz Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 239000011253 protective coating Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012681 fiber drawing Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000002307 prostate Anatomy 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00589—Coagulation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00595—Cauterization
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00702—Power or energy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B2018/2205—Characteristics of fibres
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Otolaryngology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Laser Surgery Devices (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
The invention discloses an optical fiber mode disturbing unit, a medical optical fiber based on the optical fiber mode disturbing unit and application thereof, wherein the optical fiber is double-clad optical fiber, the double-clad optical fiber comprises a first transmission channel and a second transmission channel, and the second transmission channel is arranged around the first transmission channel; when the optical fiber mode disturbing unit is in a non-mode disturbing state, light rays in the double-clad optical fiber are transmitted through a first transmission channel to output light beams at a first divergence angle; when the optical fiber mode winding unit is in a mode disturbing state, light rays in the double-clad optical fiber enter a second transmission channel from a first transmission channel to output light beams with a second divergence angle; the first divergence angle is less than the second divergence angle. It is convenient to complete ablation and hemostatic function switching, and is beneficial to hemostasis in larger areas.
Description
Technical Field
The invention relates to the technical field of medical optical fibers, in particular to an optical fiber mode disturbing unit, a medical optical fiber based on the optical fiber mode disturbing unit and application.
Background
At present, laser is used as a treatment technology of in-vivo operation, such as prostate cutting, in-vivo lithotripsy and the like, is becoming mature. In various surgical procedures, certain demands are made on the hemostatic capability of laser, and under most conditions, a mode of reducing the laser power is adopted to enable tissues to reach the temperature at which the tissues solidify but are not gasified, so that the hemostatic purpose is achieved. Some doctors who are familiar with medical equipment and operation processes can stop bleeding through the hospital bleeding area without reducing the laser power, and the principle is that the light receiving area is enlarged and the power density is reduced.
The above practice has some disadvantages:
1. Hemostasis is carried out in a power-reducing mode, the size of a light-receiving surface is unchanged, and the direction and the position of the optical fiber are required to be continuously adjusted due to the fact that the bleeding surface is large in part of the time;
2. By means of the distance adjustment, the technical requirements for operation are high, and imaging shake or defocus can be caused if the endoscope is displaced.
3. The existing switching mode adopts a pedal switching mode to switch the output power of laser, which is inconvenient.
Disclosure of Invention
The invention aims to solve the technical problem of providing an optical fiber mode disturbing unit, a medical optical fiber based on the optical fiber mode disturbing unit and application thereof, which are convenient for completing ablation and hemostatic function switching and are beneficial to hemostasis in a larger area.
In order to solve the technical problems, the invention provides an optical fiber mode disturbing unit which comprises a shell, a mode disturbing switch and a mode disturbing column, wherein an inlet hole and an outlet hole are formed in the shell, an optical fiber sequentially passes through the inlet hole and the outlet hole to be arranged in the shell in a penetrating mode, the mode disturbing column is fixedly arranged with the shell, the mode disturbing switch comprises an adjusting part, the optical fiber is positioned between the mode disturbing column and the mode disturbing switch, and the mode disturbing switch is pressed to enable the adjusting part to move relative to the mode disturbing column so as to bend the optical fiber.
Preferably, the adjusting parts are arranged in a plurality, and the adjusting parts and the disturbing mold columns are arranged in a staggered mode.
Preferably, a plurality of the adjusting parts are arranged at equal intervals.
Preferably, the number of the disturbing mold columns is plural, and the plural disturbing mold columns are arranged at equal intervals.
Preferably, the adjusting portion has an arc surface facing the optical fiber direction.
Preferably, the die disturbing switch further comprises a pressing part and an elastic reset piece, wherein the pressing part and the adjusting part are fixedly arranged, and the elastic reset piece is arranged between the pressing part and the shell.
The medical optical fiber is based on the optical fiber mode disturbing unit and is characterized by being double-clad optical fiber, wherein the double-clad optical fiber comprises a first transmission channel and a second transmission channel, and the second transmission channel is arranged around the first transmission channel;
When the optical fiber mode disturbing unit is in a non-mode disturbing state, light rays in the double-clad optical fiber are transmitted through a first transmission channel to output light beams with a first divergence angle;
When the optical fiber mode winding unit is in a mode disturbing state, light rays in the double-clad optical fiber enter a second transmission channel from a first transmission channel to output light beams with a second divergence angle; the first divergence angle is less than the second divergence angle.
Preferably, the outlet hole of the housing is glued and fixed with the double-clad optical fiber.
Preferably, the optical fiber coupling head also comprises an optical fiber protecting sleeve and an optical fiber coupling head, wherein the input end of the double-clad optical fiber is connected with the optical fiber coupling head, and the optical fiber protecting sleeve coats the double-clad optical fiber between the optical fiber coupling head and the shell.
The optical fiber mode disturbing unit has the beneficial effects that: the mode disturbing unit is arranged in the optical fiber to realize the bending of the optical fiber, so that the transmission characteristic of light in the optical fiber is changed, and the output mode of the optical fiber is changed.
The medical optical fiber has the beneficial effects that:
1. In the invention, the operation operator can complete ablation/hemostasis function switching without adjusting the output of the light source, the optical fiber can not be moved completely in the switching process, and the power density of the light receiving target position is directly reduced.
2. In the invention, medical optical fiber is used for hemostasis, the light receiving area in the hemostasis process is directly increased, and hemostasis in a larger area is facilitated.
3. The optical fiber mode disturbing unit is adopted for operation, so that the operation convenience is improved, and a structure convenient to hold is provided for the conventional medical optical fiber.
4. The invention can be matched with an endoscope to use, the endoscope can not shift and shake, and the operation precision is improved.
Drawings
FIG. 1 is a schematic diagram of a fiber mode disturbing unit according to the present invention;
FIG. 2 is a schematic diagram of a fiber mode disturbing unit according to the present invention;
FIG. 3 is a schematic view of a double-clad optical fiber, wherein (a) is an axial cross-sectional view of the double-clad optical fiber and (b) is a radial cross-sectional view of the double-clad optical fiber;
FIG. 4 is a schematic view of an optical fiber in a non-mode disturbing mode, wherein (a) is a schematic view of the structure of the optical fiber and a mode disturbing column, and (b) is a schematic view of the light transmission structure in the optical fiber;
FIG. 5 is a schematic view of an optical fiber in a mode disturbance, wherein (a) is a schematic view of the structure of the optical fiber and the mode disturbance column, and (b) is a schematic view of the light transmission structure in the optical fiber;
fig. 6 is a schematic structural view of a medical fiber.
The reference numerals in the figures illustrate: 1. an optical fiber coupling head; 2. an optical fiber protective sleeve; 3. an optical fiber mode disturbing unit; 31. a housing; 32. disturbing the mould column; 33. a mode disturbing switch; 331. an adjusting section; 4. an optical fiber; 41. a quartz fiber core; 42. A quartz inner cladding; 43. a low refractive index coating.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Referring to fig. 1-2, the invention discloses an optical fiber disturbing module unit 3, which comprises a shell 31, a disturbing module switch 33 and a disturbing module column 32, wherein an inlet hole and an outlet hole are formed in the shell 31. The optical fibers pass through the inlet and outlet holes in sequence to be pierced in the housing 31. The disturbing mold column 32 is fixedly arranged with the housing 31. The mode disturbing switch 33 includes an adjusting portion 331, and an optical fiber is located between the mode disturbing column 32 and the mode disturbing switch 33. The mode disturbing switch 33 is pressed to move the regulating portion 331 with respect to the mode pole 32 to bend the optical fiber.
The working principle of the invention is as follows: by providing a mode disturbing unit in the optical fiber 4, bending of the optical fiber is achieved, thereby changing the transmission characteristics of light in the optical fiber, and thus changing the output mode of the optical fiber. When the optical fiber is straight, the optical fiber is in a non-mode disturbing state; when the optical fiber is bent, the mode is disturbed. Such a fiber mode disturbing unit 3 is suitable for use with double clad fibers. For a double-clad fiber, it includes two output modes that differ in numerical aperture. And the double-clad optical fiber is bent through the optical fiber mode disturbing unit 3, so that the optical fiber outputs two different modes of light beams, thereby adapting to different requirements.
In this embodiment, the adjusting portion 331 is plural, and the adjusting portions 331 are offset from the disturbing columns 32. Thus, the optical fiber is convenient to bend into an s shape, and the conversion of the optical transmission mode is easier to facilitate.
The plurality of adjustment portions 331 are arranged at equal intervals. The mold disturbing columns 32 are provided in plurality, and the mold disturbing columns 32 are arranged at equal intervals. The adjusting portion 331 is disposed to be staggered with the disturbing mold columns 32, so that the disturbing mold effect can be improved.
The adjusting portion 331 has an arc surface facing the direction of the optical fiber, so that the arc of the optical fiber bending is more circular.
The tamper switch 33 further includes a pressing portion and an elastic restoring member, not shown, which are fixedly provided with the adjusting portion 331, and an elastic restoring member is provided between the pressing portion and the housing 31. The disturbing switch 33 can be set according to the requirement, and only the movement of the adjusting part 331 towards the disturbing column 32 is required. The tamper switch 33 may also include a stopper fixed to the housing 31 to limit the displacement of the pressing portion, thereby ensuring the movement displacement limit of the adjustment portion 331. The elastic restoring member may be a spring, i.e., to restore the adjusting portion 331. When the adjusting portion 331 is reset, that is, the adjusting portion 331 is far away from the disturbing column 32, the optical fiber naturally returns to the straightened state due to the good elasticity and toughness, so that the optical output of the optical fiber returns to the initial mode.
The pressing part and the shell 31 are made of light hard plastic, such as PP material, and have a length of not less than 20cm, and are suitable for being held by a human hand; the disturbing mold columns 32 are made of hard plastic, such as PP plastic, and can also be made of an arc or multi-arc structure, and the curvature radius of the arc is determined according to the disturbing mold requirement, such as radius 6mm.
Example two
Referring to fig. 3 to 6, the present invention discloses a medical optical fiber based on the optical fiber mode disturbing unit 3 in the first embodiment.
As shown in fig. 3, the optical fiber is a double-clad optical fiber. The double-cladding energy-transfer fiber is provided with a quartz fiber core 41, a quartz inner cladding 42, a low refractive index coating 43 and a protective coating in sequence from inside to outside. The silica core 41 and the silica inner cladding 42 are formed by one-step molding using an optical fiber drawing process, and then a cured low refractive index coating 43 and a protective coating are sequentially applied.
The quartz fiber core 41 and the quartz inner cladding 42 form a first transmission channel, and an output light beam with a numerical aperture NA1 is obtained; the quartz inner cladding 42 and the polymer coating form a second transmission channel, and an output light beam with a numerical aperture NA2 is obtained; for example, the structure of the optical fiber is 272um (core)/300 um (inner cladding)/400 um (polymer coating)/450 um (protective coating), and two transmission channels with NA 1.2 and NA 2.46 can be obtained by adjusting the refractive index. When the distance from the light receiving position to the light receiving direction is unchanged, the channel is switched, the output divergence angle of the channel II is about NA2/NA1 times of the output divergence angle of the channel I, and the light receiving area is that the power density correspondingly decreases.
The double-clad optical fiber comprises a first transmission channel and a second transmission channel, and the second transmission channel is arranged around the first transmission channel.
When the optical fiber mode disturbing unit 3 is in a non-mode disturbing state, the light in the double-clad optical fiber is transmitted through the first transmission channel to output the light beam with the first divergence angle.
When the optical fiber mode winding unit is in a mode disturbing state, light rays in the double-clad optical fiber enter the second transmission channel from the first transmission channel to output light beams with a second divergence angle. The first divergence angle is smaller than the second divergence angle.
The working principle of the medical optical fiber is as follows:
As shown in fig. 4, if the optical fiber is in the non-mode-disturbing state, i.e. the mode-disturbing switch 33 is not closed, and the optical fiber does not form the S-mode-disturbing state, the laser is normally transmitted along the first channel, and the beam energy is normally output, corresponding to the ablation process. As shown in fig. 5, if the mode disturbing state is that the mode disturbing switch 33 is closed, and the optical fiber forms an S-type mode, a part of the light beam overflows the total reflection condition of the first transmission channel, enters the second transmission channel, and is transmitted through the second transmission channel, and after passing through the area, the part of the light beam cannot return to the first transmission channel for continuous transmission, so that the quality of the whole light beam is deteriorated, the divergence angle of the energy output of the light beam is increased, and the hemostasis process corresponds.
As shown in fig. 6, the present invention further includes an optical fiber protecting sleeve 2 and an optical fiber coupling head 1, wherein an input end of the double-clad optical fiber is connected with the optical fiber coupling head 1, and the optical fiber protecting sleeve 2 coats the double-clad optical fiber between the optical fiber coupling head 1 and a housing 31. The exit hole of the housing 31 is glued to the double-clad fiber.
The optical fiber protective sleeve 2 penetrates from the other end of the double-cladding energy-transfer optical fiber to the position of the optical fiber coupling head 1, one end of the optical fiber protective sleeve 2 is fixed on the optical fiber coupling head 1 in a gluing or interference fit mode, and the other end of the optical fiber protective sleeve is fixed on the position of an inlet hole of the shell 31 in a gluing or mechanical screwing mode.
The beneficial effects of the invention are as follows:
1. The operation operator can complete ablation/hemostasis function switching without adjusting the output of the light source, the optical fiber can not be moved completely in the switching process, and the power density of the light receiving target position is directly reduced.
2. In the invention, medical optical fiber is used for hemostasis, the light receiving area in the hemostasis process is directly increased, and hemostasis in a larger area is facilitated.
3. The optical fiber mode disturbing unit is adopted for operation, so that the operation convenience is improved, and a structure convenient to hold is provided for the conventional medical optical fiber.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The optical fiber mode disturbing unit is characterized by comprising a shell, a mode disturbing switch and a mode disturbing column, wherein an inlet hole and an outlet hole are formed in the shell, optical fibers sequentially pass through the inlet hole and the outlet hole to penetrate through the shell, the mode disturbing column and the shell are fixedly arranged, the mode disturbing switch comprises an adjusting part, the optical fibers are located between the mode disturbing column and the mode disturbing switch, and the mode disturbing switch is pressed to enable the adjusting part to move relative to the mode disturbing column to bend the optical fibers.
2. The optical fiber mode disturbing unit according to claim 1, wherein the plurality of adjusting parts are arranged in a staggered manner with the mode disturbing column.
3. The optical fiber mode disturbing unit according to claim 1, wherein a plurality of the regulating portions are arranged at equal intervals.
4. The optical fiber mode disturbing unit according to claim 1, wherein the mode disturbing columns are provided in plural, and the mode disturbing columns are arranged at equal intervals.
5. The optical fiber mode disturbing unit according to claim 1, wherein the regulating portion has an arc surface facing the optical fiber direction.
6. The optical fiber disturbing unit according to claim 1, wherein the disturbing switch further comprises a pressing portion and an elastic reset member, the pressing portion is fixedly arranged with the adjusting portion, and the elastic reset member is arranged between the pressing portion and the housing.
7. A medical optical fiber, based on the optical fiber mode disturbing unit of any one of claims 1-6, characterized in that the optical fiber is a double-clad optical fiber comprising a first transmission channel and a second transmission channel, the second transmission channel being arranged around the first transmission channel;
When the optical fiber mode disturbing unit is in a non-mode disturbing state, light rays in the double-clad optical fiber are transmitted through a first transmission channel to output light beams at a first divergence angle;
when the optical fiber mode winding unit is in a mode disturbing state, light rays in the double-clad optical fiber enter a second transmission channel from a first transmission channel to output light beams with a second divergence angle;
The first divergence angle is less than the second divergence angle.
8. The medical fiber according to claim 7, wherein the exit hole of the housing is adhesively secured to the double-clad fiber.
9. The medical fiber according to claim 7, further comprising a fiber protective sheath and a fiber coupling head, wherein the input end of the double-clad fiber is connected to the fiber coupling head, and wherein the fiber protective sheath encapsulates the double-clad fiber between the fiber coupling head and the housing.
10. Use of the medical fiber according to claim 7 for the manufacture of ablation and hemostasis switching devices.
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| CN202010470452.1A CN111658139B (en) | 2020-05-28 | 2020-05-28 | Optical fiber mode disturbing unit, medical optical fiber based on optical fiber mode disturbing unit and application |
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| CN202010470452.1A CN111658139B (en) | 2020-05-28 | 2020-05-28 | Optical fiber mode disturbing unit, medical optical fiber based on optical fiber mode disturbing unit and application |
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| CN111658139B true CN111658139B (en) | 2024-07-02 |
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| CN212996714U (en) * | 2020-05-28 | 2021-04-20 | 北京通腾激光医疗科技有限公司 | Optical fiber mode-disturbing unit and medical optical fiber based on optical fiber mode-disturbing unit |
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| CN100424494C (en) * | 2005-12-17 | 2008-10-08 | 中国科学院安徽光学精密机械研究所 | Method for Realizing Uniform Intensity of Circular Halo and Optical Fiber Mode Scrambler |
| CN102866501B (en) * | 2012-09-27 | 2014-10-22 | 哈尔滨工程大学 | Emergent light spot strength homogenizing mode-disturbing device for optical fiber |
| CA2899953C (en) * | 2013-02-01 | 2021-01-12 | Polyvalor, Limited Partnership | Asymmetric optical fiber coupler |
| CN203759313U (en) * | 2013-11-14 | 2014-08-06 | 北京龙慧珩医疗科技发展有限公司 | Bent corner laser optical fiber structure |
| US10677984B2 (en) * | 2016-09-29 | 2020-06-09 | Nlight, Inc. | Production of temporally apparent intensity distribution by rapid perturbation of variable beam characteristics optical fiber |
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