CN115051230A - Device with functions of preventing light reflection and monitoring light signal and monitoring method - Google Patents
Device with functions of preventing light reflection and monitoring light signal and monitoring method Download PDFInfo
- Publication number
- CN115051230A CN115051230A CN202210678570.0A CN202210678570A CN115051230A CN 115051230 A CN115051230 A CN 115051230A CN 202210678570 A CN202210678570 A CN 202210678570A CN 115051230 A CN115051230 A CN 115051230A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- coreless
- light
- monitoring
- disc
- 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
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 28
- 230000006870 function Effects 0.000 title claims description 10
- 239000013307 optical fiber Substances 0.000 claims abstract description 162
- 230000003287 optical effect Effects 0.000 claims abstract description 33
- 238000005253 cladding Methods 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims description 54
- 239000011247 coating layer Substances 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 21
- 239000003292 glue Substances 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 230000009131 signaling function Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 8
- 230000004927 fusion Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- -1 rare earth ions Chemical class 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 210000003733 optic disk Anatomy 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/0014—Monitoring arrangements not otherwise provided for
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The device comprises a tail end optical fiber which is not used by the laser, a coreless optical fiber with the same diameter as a cladding of the tail end optical fiber and an optical fiber disc for placing the optical fiber, wherein tail end of the coreless optical fiber is subjected to ball burning treatment, the coreless optical fiber is subjected to integral microstructure treatment, the coreless optical fiber is placed in the optical fiber disc after integral gluing, and an optical signal acquisition device is placed on a cover of the optical fiber disc and used for monitoring the light emitting state of the laser. The device can be finally packaged into an independent device, can be produced in batches, and is convenient for production line staff to be connected with the laser.
Description
Technical Field
The invention relates to the technical field of laser monitoring, in particular to a device with functions of preventing light reflection and monitoring light signals.
Background
At present, one end of a commonly used optical fiber laser with a fabry perot resonant cavity structure has an unused optical fiber, and because of factors such as spontaneous emission light in an optical path, return light at a fusion point, high-reflectivity of an anti-grating to signal light being not 100%, the idle optical fiber has light output.
The current common treatment methods are as follows:
1. after cutting, high-refractive index glue is smeared and pasted on the light circuit board, and the method has the problems that: since the core is thin, the emitted optical power density is high, burning may be caused if the laser has strong return light coming out of it, and the bare glue may be separated from the optical path board and risk to hit the leaked light to other optical fibers if it is used for a long time.
2. The other section of the jumper is connected with the waste light collector or directly hit on the side wall of the optical circuit board, and the method has the following problems: part of light returns to the inside of the laser to cause poor stability of the laser, and dust is attached to a jumper wire light outlet to cause damage when the laser is used for a long time.
3. The method has the problems that: the high-order mode is filtered by the small disc ring, so that the optical power at the position can be reduced and the return light at the position can be weakened, but the optical power and the return light cannot be completely eliminated, so that the method has certain limitation and the effect hardly meets the expected requirement.
Disclosure of Invention
The invention provides a device with functions of preventing light reflection and monitoring optical signals and a monitoring method, aiming at solving the problems that the existing processing mode for preventing light reflection respectively has the risk that leaked light is irradiated on other optical fibers, part of light is reflected into a laser to cause poor stability of the laser, dust is attached to a jumper wire light outlet to cause damage when the laser is used for a long time, limitation exists when small circles are adopted for processing, the expected requirements are difficult to meet, and the like.
The device with the functions of preventing light reflection and monitoring optical signals comprises a tail end optical fiber which is not used by a laser, a coreless optical fiber with the same diameter as the cladding of the tail end optical fiber, an optical fiber disc in which the coreless optical fiber is coiled and a light-emitting monitor;
terminal optic fibre and centreless optical fiber butt fusion, centreless optical fiber dish after the butt fusion is gone into in the optical fiber dish, and after leading-in high refractive index glue carries out optic fibre solidification sealing in the optical fiber dish, installation optical fiber dish upper cover, the light-emitting watch-dog is installed at optical fiber dish upper cover.
Further, the method also comprises the step of processing the coreless optical fiber, and the method is realized by the following steps:
step A, before welding, stripping off a coating layer at one end of a coreless optical fiber, and then cutting an end face to be flat; welding, and finally coating glue on the welding point;
step B, coreless fiber ball burning treatment;
peeling off the coating layer at the other end of the coreless optical fiber by a certain length, and performing ball burning treatment after cutting the end face;
and step C, performing surface micro-treatment on the part of the coreless optical fiber with the coating layer stripped and the ball burning position to obtain the coreless optical fiber with a smooth optical fiber surface.
Further, the angle of the flat end faces of the two ends of the coreless optical fiber is less than 0.5 degrees.
Furthermore, a plurality of cylinders are arranged in the optical fiber disc, and the coreless optical fiber is wound around the cylinders in a staggered manner; the mounting hole of the optical fiber disc upper cover is used for mounting a light-emitting monitor, and the light-emitting monitor converts the monitored optical signals into electric signals to be transmitted to a control system.
Further, the light emitting monitor is a photodiode detector.
The monitoring method with the functions of preventing light reflection and monitoring light signals is realized by the following steps:
preparing a tail end optical fiber which is not used by a laser and a coreless optical fiber with the same cladding diameter as the tail end optical fiber;
welding the tail end optical fiber with one end of the coreless optical fiber;
step three, performing ball burning and surface microstructure treatment on the other end of the coreless optical fiber;
step four, placing the coreless optical fiber tray treated in the step three into an optical fiber tray, and coating high-refractive-index glue;
and fifthly, mounting a light-emitting monitor at a mounting hole position of the upper cover of the optical fiber disc, fixing the upper cover after selecting a monitoring point by rotating the upper cover, converting an optical signal monitored by the light-emitting monitor into an electric signal and transmitting the electric signal to a control system, and monitoring the optical signal.
The invention has the beneficial effects that: the invention can effectively strip redundant laser, the end face of the optical fiber can not generate back reflection, and the end face can not be burnt due to too strong laser, thereby improving the stability and reliability of the optical path, prolonging the service life of the optical path system, finally, the whole can be packaged into an independent device, being capable of batch production, and facilitating the connection of production line staff and the laser.
The device of the invention can uniformly strip useless light beams in the optical fiber, and the end surface of the optical fiber can not generate resonant cavity oscillation with the front optical path, and the end surface can not have the risk of burning out like the traditional processing mode; and a light-emitting monitor is arranged in the mechanical piece and used for monitoring the light-emitting state of the laser.
Drawings
FIG. 1 is a flow chart of a method for preventing light reflection and monitoring optical signals according to the present invention;
FIG. 2 is a flow chart of a method of processing coreless fiber;
FIG. 3 is a cross-sectional comparison of a conventional optical fiber and a coreless fiber;
FIG. 4 is a schematic diagram of the positions of an F-P structure laser and a fiber optic disk;
FIG. 5 is a schematic view of a coreless fiber ball-firing and cladding micro-processing structure;
FIG. 6 is a schematic view of a fiber optic tray configuration;
fig. 7 is a schematic structural diagram of an optical fiber disc after the optical fiber disc is installed in the optical fiber disc.
FIG. 8 is a schematic view of the bend radius of an optical fiber;
FIG. 9 is a schematic view of a fiber optic tray cover;
FIG. 10 is a schematic view of the overall structure of the optical fiber tray;
Detailed Description
First embodiment, the present embodiment is described with reference to fig. 2 to 10, and the apparatus having functions of preventing light reflection and monitoring an optical signal includes a distal end optical fiber not used by a laser, a coreless fiber having the same diameter as a cladding of the distal end optical fiber, a mechanical member for placing the coreless fiber, and an outgoing light monitor; terminal optic fibre and centreless optical fiber butt fusion, centreless optical fiber dish after the butt fusion is gone into in the optical fiber dish, and after leading-in high refractive index glue carries out optic fibre solidification sealing in the optical fiber dish, installation optical fiber dish upper cover, the light-emitting watch-dog is installed at optical fiber dish upper cover.
In this embodiment, the end optical fiber not used by the laser is fusion-spliced with the coreless optical fiber having the same size as the cladding of the end optical fiber, and the coreless optical fiber is different from the common single-clad optical fiber and the double-clad optical fiber, and the coreless optical fiber does not include a core and has a structure including two parts, i.e., a coating layer and a cladding. The coreless fiber is a passive fiber containing no rare earth ions, the coating layer is generally acrylic resin, the cladding layer is generally solid quartz, and the cladding layer has dimensions
And the specific type selection is carried out according to the diameter of the cladding of the tail fiber of the laserAnd (4) reasonable matching.
Generally, the optical fiber laser is a double-clad optical fiber, signal light is transmitted in a fiber core, the diameter of the fiber core is generally small, so that the power density is very high, particularly, the fiber is burnt due to the overhigh power density when the signal light is output at a welding point or at the tail end, laser in the coreless optical fiber is transmitted in a cladding, the size of the cladding is much larger than that of the fiber core of the double-clad optical fiber, so that the power density is reduced, and the risk of fiber burning is reduced.
According to I ═ P/S, wherein I is power density, P is power, and S is area; such as laser pigtail (end fiber not used by laser) fiber model 10/125, 10 being core diameter in microns, 125 being cladding diameter in microns; when the optical power is 1W, the power density I of the fiber core of the laser is 1e-2W/um 2 If the matching coreless fiber is clad with
The power density I is 8e-5W/um 2 The visible power density is reduced by 3 orders of magnitude in the coreless fiber, and the effect is very obvious.
Referring to fig. 2, the present embodiment further includes a step of processing the coreless fiber, and the step is specifically implemented by:
step A, before the coreless optical fiber is welded, a coating layer needs to be stripped off, and the stripping is about 15 mm; then, the end face of the optical fiber is cut flat by a cutter, and the angle after cutting flat is less than 0.5 degree; welding two optical fibers by using a welding machine, and finally coating glue on a welding point by using a coating machine for protection;
step B, coreless fiber ball burning; the coating layer at the other end (tail end) of the coreless fiber is stripped for a certain length according to specific conditions, and the length of the coating layer can be generally one third of the whole length of the coreless fiber; cutting the end surface flat and then putting the cut end surface flat into optical fiber equipment capable of burning balls for processing;
in this embodiment, the coreless optical fiber end surface is a method of obtaining a spherical end surface on a flat optical fiber end surface, and generally, there are an arc method, a laser method, an oxyhydrogen flame method, and the like, and the optical fiber end surface is melted by the above method, and forms various ellipsoids, hemispheres, and the like with curvatures under the action of surface tension when cooled.
Before ball burning, the end face of the optical fiber needs to be treated, specifically comprising the steps of stripping a coating layer, cleaning the optical fiber and cutting the end face, wherein the cutting angle of the end face of the optical fiber is ensured to be less than 0.5 degrees after the end face of the optical fiber is cut, and the end face has no obvious cracks, edge breakage and the like; burning the ball can further reduce the risk of burning of the end face, and the contact area of the spherical end face is larger than that of the plane.
For example, the radius of the beam (light traveling inside the fiber) is r, as is the radius of the fiber, and the area S1 pi r when the end face is planar 2 If the end face is a hemispherical face, the area S2 ═ 2 × pi × r 2 It is clear that S2 is greater than S1, i.e., the power density is reduced when the end face is curved. Curved surfaces (including hemispheres, ellipsoids, and even other surfaces with curved surfaces) are actually lower power density than flat surfaces.
And step C, performing surface micro-treatment on the part of the coreless optical fiber with the coating layer stripped and the ball burning position to obtain the coreless optical fiber with a smooth optical fiber surface.
The present embodiment is described with reference to fig. 4, fig. 4 is a diagram of a fiber laser optical path of a standard fabry perot resonator structure, a beam combiner introduces LD pump light into a main optical path, rare-earth ions in an active fiber are excited by the pump light to generate a large number of photons, a high-low reflecting grating screens out photons of a desired waveband and provides positive feedback to amplify an optical signal output from the low reflecting grating, a CPS removes unabsorbed pump light, and finally laser light is output from a collimator, and the device (a pigtail protector) of the present embodiment is placed at a position shown in fig. 4 for signal monitoring, and if no device is placed at the position, the device is used as a laser pigtail, that is, an unused fiber.
Referring to fig. 5, the present embodiment will be described, in which the ball burning position of the coreless optical fiber and the cladding layer of the stripped coating layer are subjected to surface micro-processing, and the present convenient and fast method is to use the optical fiber processing working platform with the optical fiber pinout function to process the unevenness of the optical fiber surface, which will destroy the total reflection structure and promote laser leakage, assuming that the cladding refractive index n1 and the air refractive index n2 are the same, where n1 is greater than n2, and the incident angle is greater than n2
Angle of refraction
This satisfies
Critical angle
Satisfy the formula
I.e. angle of incidence greater than
When the light beam is transmitted in the optical fiber, the surface of the cladding is damaged, the same incident angle of the light beam changes, and the light leaks out when the incident angle is smaller than the critical angle.
The present embodiment is described with reference to fig. 6 to 8, in which the processed coreless optical fiber is placed in an optical fiber tray, and a high refractive index glue is applied to the whole optical fiber tray; the optical fiber disc is provided with a plurality of small cylinders, and the optical fiber needs to be wound around the small cylinders in a staggered disc fiber mode. Thus, coiling the fiber increases the fiber bend loss, with the smaller the fiber bend radius, the greater the loss factor.
The bending of the optical fiber can cause the increase of the internal loss, and generally the internal loss is divided into two stages, wherein the bending loss increases exponentially along with the reduction of the bending radius R when the bending is smaller; secondly, the loss is increased more seriously after the bending radius R is smaller than the critical radius R0.
For example, in fig. 7, the small cylinders are actually uniformly distributed on the three concentric circles, in fig. 7, the fibers are wound in a staggered manner by using the innermost and middle layers of the small cylinders, the bending radius of the optical fiber is smaller and the loss is larger by using the innermost and outermost layers of the fibers, and meanwhile, the size of the small cylinder, the distance between the cylinders and the radius of the three concentric circles and the change of the parameters such as the type of the used optical fiber also cause the change of the bending radius of the optical fiber to influence the loss, so that the parameters need to be optimized according to actual conditions. The specification parameters on the current figure are that the diameter of a small cylinder is 3mm, the radiuses of three concentric circles are respectively 20mm, 25mm and 30mm, and the height of an optical fiber disc is 15mm, and the parameters need to be adjusted according to actual conditions.
In fig. 8, according to the cladding refractive index n1, radius x, and air refractive index n2, if the fiber bending radius R is much larger than a/δ, where δ is (n1-n2)/n2, the optical field in the fiber is similar to straight line propagation, the loss coefficient γ is Aexp (-B R), and a and B are constants; a is loss coefficient, which is a quantity of the relationship between the output light intensity and the input light intensity after the light passes through a section of optical fiber, and the formula is I 1 ＝I 0 *e -γ Wherein I 1 Is the output light intensity, I 0 Is the input light intensity and gamma is the loss factor.
And the critical radius r0 ≈ (3 × n 1) 2 *λ)/(4*π*(n1 2 -n2 2 ) 3/2 ) Fiber losses are more pronounced below this radius.
In this embodiment, leading-in high refractive index glue in the optical fiber dish, high refractive index glue purpose makes the intraformational light of cladding fully reveal more, protects optic fibre simultaneously, and high refractive index glue is the arbitrary optical ultraviolet glue that the refracting index is higher than the optic fibre cladding refracting index, does not produce stress and softness after the solidification.
The present embodiment is described with reference to fig. 9 and 10, in the present embodiment, a light-emitting monitor is installed at the hole of the upper cover of the optical fiber tray, and the light-emitting monitor is a photodiode detector. And selecting a proper monitoring point by rotating the upper cover, and finally integrally fixing. Light leaked from the optical fiber is sensed by the light-emitting monitor, an electric signal is generated and fed back to the control system, the size of the telecommunication signal is in direct proportion to the light intensity, and an alarm can be triggered if no light is generated or the light beam is too strong. When the light path emits light at the maximum power, if the light intensity monitored by the light-emitting monitor is P0, and when the light path emits light at the minimum power, if the light intensity monitored by the light-emitting monitor is P1, the upper alarm limit of the monitor can be 1.5 times of P0, and the lower alarm limit can be 0.5 times of P1, that is, the light intensity does not alarm when the light intensity is 0.5 times of P1 and 1.5 times of P0, and the light intensity is less than 0.5 times of P1 or more than 1.5 times of P0.
The second embodiment is described with reference to fig. 1, fig. 2, fig. 6 and fig. 7, and the second embodiment is a method for monitoring by using the device having the functions of preventing light reflection and monitoring an optical signal according to the first embodiment, and the method is implemented by the following steps:
preparing a tail end optical fiber which is not used by a laser and a coreless optical fiber with the same cladding diameter as the tail end optical fiber;
welding the tail end optical fiber with one end of the coreless optical fiber;
step three, performing ball burning and surface microstructure treatment on the other end of the coreless optical fiber;
step four, placing the coreless optical fiber tray treated in the step three into an optical fiber tray, and coating high-refractive-index glue;
and fifthly, mounting a light-emitting monitor at a mounting hole position of the upper cover of the optical fiber disc, selecting a monitoring point by rotating the upper cover, fixing the upper cover, converting optical signals monitored by the light-emitting monitor into electric signals, and transmitting the electric signals to a control system to realize monitoring of the optical signals.
In this embodiment, the coreless fiber processing step includes:
step A, before welding, stripping off a coating layer at one end of a coreless optical fiber (about 15mm is stripped approximately), and then cutting an end face to be flat, (the cut optical fiber can be placed in a welding machine, and the welding machine can display an end face angle which is generally less than 0.5 degrees); welding, and finally coating glue on the welding point;
step B, coreless fiber ball burning treatment;
stripping a coating layer at the other end of the coreless fiber by a certain length (generally, the coating layer can be one third of the whole length of the coreless fiber according to specific conditions), cutting the end face to be flat and then carrying out ball burning treatment;
and step C, performing surface micro-treatment on the part of the coreless optical fiber with the coating layer stripped and the ball burning position to obtain the coreless optical fiber with a smooth optical fiber surface.
A plurality of cylinders are arranged in the optical fiber disc, and the coreless optical fiber is wound around the cylinders in a staggered manner. This increases the fiber bend loss, with smaller fiber bend radii and higher loss factors.
Claims (7)
1. Have the device that prevents the light reflection and control light signal function, characterized by: the device comprises a tail end optical fiber which is not used by a laser, a coreless optical fiber with the same diameter as the cladding of the tail end optical fiber, an optical fiber disc in which the coreless optical fiber is coiled and a light-emitting monitor;
the tail end optical fiber and the coreless optical fiber are welded, the welded coreless optical fiber is placed in an optical fiber disc, high-refractive-index glue is led into the optical fiber disc for curing and sealing the optical fiber, an upper cover of the optical fiber disc is installed, and the light emitting monitor is installed on the upper cover of the optical fiber disc;
the method also comprises the step of processing the coreless optical fiber, which comprises the following specific steps:
step A, before welding, stripping off a coating layer at one end of the coreless optical fiber, and then cutting the end face to be flat; welding, and finally coating glue on the welding point;
step B, coreless fiber ball burning treatment;
peeling off the coating layer at the other end of the coreless optical fiber by a certain length, and performing ball burning treatment after cutting the end face;
and step C, performing surface micro-treatment on the part of the coreless optical fiber with the coating layer stripped and the ball burning position to obtain the coreless optical fiber with a smooth optical fiber surface.
2. The apparatus of claim 1, wherein the optical signal monitoring and preventing device comprises: the angle of the end faces of the two ends of the coreless optical fiber after being cut flat is less than 0.5 degrees.
3. The apparatus of claim 1, wherein the optical signal monitoring and preventing device comprises: a plurality of cylinders are arranged in the optical fiber disc, and the coreless optical fiber is wound around the cylinders in a staggered manner; the mounting hole of the optical fiber disc upper cover is used for mounting a light-emitting monitor, and the light-emitting monitor converts the monitored optical signals into electric signals and transmits the electric signals to the control system.
4. The apparatus of claim 1, wherein the optical signal monitoring and preventing device comprises: the light-emitting monitor is a photodiode detector.
5. The method for monitoring an apparatus having functions of preventing light reflection and monitoring an optical signal according to claim 1, wherein: the method is realized by the following steps:
preparing a tail end optical fiber which is not used by a laser and a coreless optical fiber with the same cladding diameter as the tail end optical fiber;
welding the tail end optical fiber with one end of the coreless optical fiber;
step three, performing ball burning and surface microstructure treatment on the other end of the coreless optical fiber;
step four, placing the coreless optical fiber tray treated in the step three into an optical fiber tray, and coating high-refractive-index glue;
and fifthly, mounting a light-emitting monitor at a mounting hole position of the upper cover of the optical fiber disc, selecting a monitoring point by rotating the upper cover, fixing the upper cover, converting optical signals monitored by the light-emitting monitor into electric signals, and transmitting the electric signals to a control system to realize monitoring of the optical signals.
6. The monitoring method according to claim 5, wherein: the coreless optical fiber treatment process comprises the following steps:
step A, before welding, stripping off a coating layer at one end of the coreless optical fiber, and then cutting the end face to be flat; welding, and finally coating glue on the welding point;
step B, coreless fiber ball burning treatment;
peeling off the coating layer at the other end of the coreless optical fiber by a certain length, and performing ball burning treatment after cutting the end face;
and step C, performing surface micro-treatment on the part of the coreless optical fiber with the coating layer stripped and the ball burning position to obtain the coreless optical fiber with a smooth optical fiber surface.
7. The monitoring method according to claim 5, wherein: a plurality of cylinders are arranged in the optical fiber disc, and the coreless optical fibers are wound around the cylinders in a staggered mode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021106772528 | 2021-06-18 | ||
| CN202110677252.8A CN113437628A (en) | 2021-06-18 | 2021-06-18 | Device with functions of preventing light reflection and monitoring light signal and monitoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115051230A true CN115051230A (en) | 2022-09-13 |
Family
ID=77756487
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110677252.8A Pending CN113437628A (en) | 2021-06-18 | 2021-06-18 | Device with functions of preventing light reflection and monitoring light signal and monitoring method |
| CN202210678570.0A Pending CN115051230A (en) | 2021-06-18 | 2022-06-16 | Device with functions of preventing light reflection and monitoring light signal and monitoring method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110677252.8A Pending CN113437628A (en) | 2021-06-18 | 2021-06-18 | Device with functions of preventing light reflection and monitoring light signal and monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN113437628A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115598910A (en) * | 2022-12-13 | 2023-01-13 | 杭州中科极光科技有限公司（Cn） | Optical system for avoiding ablation of optical fiber end face and laser projection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07225325A (en) * | 1994-02-11 | 1995-08-22 | Fujikura Ltd | Non-reflection terminal part of optical fiber |
| JP2004302292A (en) * | 2003-03-31 | 2004-10-28 | Hoya Corp | Optical fiber terminal, its manufacturing method and optical coupler, and optical component |
-
2021
- 2021-06-18 CN CN202110677252.8A patent/CN113437628A/en active Pending
-
2022
- 2022-06-16 CN CN202210678570.0A patent/CN115051230A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07225325A (en) * | 1994-02-11 | 1995-08-22 | Fujikura Ltd | Non-reflection terminal part of optical fiber |
| JP2004302292A (en) * | 2003-03-31 | 2004-10-28 | Hoya Corp | Optical fiber terminal, its manufacturing method and optical coupler, and optical component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113437628A (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6580995B2 (en) | Low mode high power fiber coupler | |
| JP2572402B2 (en) | Access method for optical fiber line and connector plug thereof | |
| US9534952B2 (en) | Integrated parameter monitoring in a fiber laser/amplifier | |
| JP6683775B2 (en) | Ultra-high power single mode fiber laser system with non-uniformly configured fiber-fiber rod multimode amplifier | |
| EP2962140B1 (en) | Ultra-high power fiber laser system with multimode-multimode fiber combiner | |
| US7684449B2 (en) | Optical fiber for fiber laser device and fiber laser device using same | |
| JPH07119856B2 (en) | Optical transmission device | |
| US7580600B1 (en) | Free space high power fiber coupler | |
| CN115051230A (en) | Device with functions of preventing light reflection and monitoring light signal and monitoring method | |
| JP2020183977A (en) | Optical coupler and optical output device | |
| US6842570B2 (en) | Method for coupling diode array light into an optical fiber | |
| CN110364919B (en) | Optical fiber laser device | |
| CN102201642A (en) | Method for protecting pumping source of optical device | |
| CN107887782A (en) | A kind of optical fiber laser and laser marking machine | |
| JP2003295000A (en) | Optical device | |
| JP4031804B2 (en) | Optical device | |
| CN105161959B (en) | Unidirectional optical fiber cladding light filter and optical fiber laser | |
| JP2010232634A (en) | Optical combiner and fiber laser using the same | |
| CN217739544U (en) | Fusion spliced optical fiber and optical fiber laser | |
| KR102333205B1 (en) | Apparatus for Monitoring of Retro-reflection Light and Laser Beam Combiner including the same | |
| US9130340B1 (en) | System and method for output port management in short-length fiber amplifiers | |
| JP2005018006A (en) | Optical device | |
| JP5095652B2 (en) | Optical combiner | |
| CN115113347A (en) | Optical module for laser indication and laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220913 |