CN106855649A - A kind of optical fiber buncher drawing method - Google Patents
A kind of optical fiber buncher drawing method Download PDFInfo
- Publication number
- CN106855649A CN106855649A CN201611248452.7A CN201611248452A CN106855649A CN 106855649 A CN106855649 A CN 106855649A CN 201611248452 A CN201611248452 A CN 201611248452A CN 106855649 A CN106855649 A CN 106855649A
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- optical fiber
- quartz ampoule
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- cone
- buncher
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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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/028—Drawing fibre bundles, e.g. for making fibre bundles of multifibres, image fibres
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The present invention is a kind of optical fiber buncher drawing method, and step is as follows：The bare fibre beam of removal optical fiber coating is penetrated in quartz ampoule, and two ends are stayed in outside quartzy pipe port；Quartzy bore just allows the bare fibre beam to pass through.The quartz ampoule two ends for penetrating fibre bundle are put into fixed in drawing cone fixture, draw quartz ampoule and its interior fibre bundle after cone to turn into the optical fiber buncher of fusion one.This law adjusts flame lance Level Change quartz ampoule heating temperature, reduces insertion loss.Add the adjusting height of helical structure under flame lance, can quantitative grading adjust it highly.Repeatedly examination is drawn and is adjusted, and obtains the optimal flame lance of the qualified buncher of drawing insertion loss highly.The horn mouth of quartz ampoule one end effectively protects fibre bundle.Quartz ampoule of the present invention ideally constrains the arrangement of fibre bundle optimum tight, improves the depth of parallelism between dutycycle and core, and efficiency is significantly improved；The gradual precise control of quartz ampoule heating temperature, it is ensured that draw cone to obtain the qualified optical fiber buncher of insertion loss, shorten regulating time.
Description
Technical field
The present invention relates to a kind of optical fiber buncher drawing technology field, specially a kind of optical fiber buncher drawing method, stone
English pipe sleeve constrains close fiber optic arrangement outside fibre bundle.
Background technology
, it is necessary to realize that high-energy is exported in the practical application in the fields such as laser inertial confinement fusion, high energy laser system,
Require electrical-optical high, light-light conversion efficiency simultaneously.Fiber amplifier network (FAN) is capable of achieving laser-produced fusion igniter megajoule
Single pulse energy output above, the features such as efficiency high, light path flexibility is inserted with wall.But realize single pulse energy so high
Amount output is, it is necessary to using up to ten million large mode field gain fibres, while needing based on optical fiber buncher to realize hundreds and thousands of
The beam combination of optical fiber output light beam.
Optical fiber arrangement causes arrangement not tight using traditional gluing or wire binding during optical fiber buncher makes, office
Portion bends the shortcoming of the depth of parallelism difference and optical fiber between.
Optical fiber fused tapering (FBT-Fused Biconical Taper) technique, is by many optical fiber of removal coat
Draw close in some way, melt at high temperature heat, while to two side stretchings, finally forming bicone structure in heating zone
Special boundling device, it is desirable to which optical fiber arrangement is tight after drawing, and dutycycle is high, and can be effectively ensured parallel between core between optical fiber
Degree.
An optical fiber centered on preferable N core fibre buncher close fiber optic arrangement modes, each layer fiber count outside it is equal
It is 6 multiple, core number N is with the relation of optical fiber arrangement number of plies M：
K is positive integer.
But when existing buncher drawing method is difficult to realize this close-packed arrays, particularly large core number, it is impossible to ensure to draw
Multifiber is neat by above-mentioned aligned transfer before system, although skilled engineer's plenty of time when optical fiber buncher is made
Spend in dense arrangement optical fiber, but yield rate is still extremely low, and the depth of parallelism is determined by execute-in-place situation between core, and repeatability is extremely low.
When draw optical fiber buncher insertion loss index backlog demand when, now can only by change draw cone speed and
Try to draw again after rate of flame travel, but be related to draw cone speed and the parameter space of rate of flame travel needs adjustment too big, selection
The parameter of pairing is more than 106, test to get up to expend very much the time, also difficult selected suitable drawing bores speed and rate of flame travel, real
Now draw the optical fiber buncher for meeting insertion loss index.
The content of the invention
It is an object of the invention to provide a kind of drawing method of optical fiber buncher, the fibre bundle that will be prepared integrally penetrates stone
Ying Guanzhong, optical fiber and quartz ampoule draw cone, the depth of parallelism, essence between the close-packed arrays and fiber cores of the constraint guarantee optical fiber of quartz ampoule simultaneously
Really control draws cone flame lance highly, it is ensured that draws cone temperature appropriate, the optical fiber buncher insertion loss of drawing is met the requirements.
A kind of optical fiber buncher drawing method that the present invention is provided includes following job step：
Ith, optical fiber coating removal
According to optical fiber buncher core number N to be prepared, N root optical fiber one end being removed into optical fiber coating, naked fibre is long by 50~
80mm, by drawing, cone compares specific length and the cone section length of needs is determined, cleans dried for standby；
IIth, quartz pipe sleeve is fine
The fibre bundle that will be prepared is penetrated in quartz ampoule, and the bare fibre without coat stretches out from one end of quartz ampoule, there is painting
Optical fiber one end of coating is stayed in outside the quartz ampoule other end；
The quartz ampoule is the pure quartz ampoule of glassy state, and length is 30~60mm, and its internal diameter is bare fibre beam external diameter, with naked light
Fine beam can just be passed through and is defined.
The pipe thickness of quartz ampoule is less than 1mm.
The fiber lengths for having coat outside quartz ampoule are 800~1000mm, and the bare fibre length without coat is 15
~20mm.
IIIth, optical fiber buncher draws
There are a pair of drawings to bore fixture mobile platform and flame mobile platform, each electronic fine setting on drawing device workbench used
Frame connection drives each mobile platform movement, and control system connection each electronic micropositioning stage of control controls the movement of each mobile platform
Speed and distance.
There is the adjusting height for adjusting flame lance height on the electronic micropositioning stage of flame mobile platform.
The fuel gas flow of flame is constant, the fluctuation of experimental situation airless；Quartz ampoule lower edge is in flame.
The quartz ampoule two ends for penetrating fibre bundle that step II is completed are put into drawing cone fixture and are fixed, according to light to be prepared
Drawing cone ratio and cone section length designed by fine buncher set to draw bores the outer shifting speed of fixture mobile platform, flame mobile platform
Translational speed, carries out drawing cone, and when quartz ampoule softens, the fibre bundle in it is also at soft state, draw cone fixture mobile platform to
It is the optical fiber buncher of the cone structure being fused into one that side shifting outside left and right, quartz ampoule and fibre bundle are drawn into.
IVth, flame lance high precision control
If step III draws the optical fiber buncher insertion loss index obtained by cone to be unsatisfactory for requiring that this method is by adjusting flame
Jet pipe Level Change quartz ampoule heating temperature, so as to reduce the insertion loss for drawing cone gained optical fiber buncher.
By testing regulation flame lance highly, the insertion loss that gained optical fiber buncher is drawn in examination is determined, flame lance is high
Spend after turning down certain value, quartz ampoule is increased with flame distance, the reduction of its heating temperature, if now trying the insertion of the optical fiber buncher of drawing
Loss is reduced, and illustrates that flame lance is highly turned down correctly, continues to turn down flame lance highly；If the height of flame lance is turned down
Afterwards, the insertion loss of the optical fiber buncher that examination is drawn is raised, and illustrates that flame lance height should be heightened.Repeatedly examination is drawn and regulation flame
Jet pipe highly, obtains optimal flame lance highly, to realize that the insertion loss of optical fiber buncher of drawing is qualified.
The adjusting height of the regulation flame lance height includes vertical screw rod and nut, there is handwheel on screw rod, rotates hand
Wheel rotates screw rod, and nut thereon is moved up and down.Flame lance is connected to nut, with nut synchronously move up and down.The spiral shell
The thread of bar is away from being 0.4~0.6mm.Hand wheel rotating one week, screw rod rotates 360 degree, and nut up or down moves 0.4~0.6mm.This
Method with 10 degree of hand wheel rotating be one grade of regulation flame lance highly, i.e., each flame lance height change is 0.011~
0.018mm。
When step IV examination is drawn, the translational speed heated quarty tube of the flame mobile platform determined by step III, with step
Quartz ampoule is drawn and bored by the outer shifting speed of the rapid III drawing cone fixture mobile platform for determining, drawing cone fixture, if quartz ampoule draws bores shaping,
Flame lance now highly for initial flame jet pipe highly.
If flame lance is too low, from quartz ampoule too away from, quartz ampoule softens inadequate, draws cone fixture to pull quartz ampoule；If
Flame lance is too high, and quartz ampoule is melted deformation, and heating zone possibly even drops, and cannot also draw.
By certain point, 1~M of hand wheel rotating on the right-angled intersection point alignment quartz ampoule on infrared temperature tester monitor screen
Week, the temperature change value of this point on record quartz ampoule.More than 5 times be repeatedly measured, can be calculated the Zhou Shiwen of hand wheel rotating one
The average change value of degree.When also can be obtained by one grade of regulation flame lance height of each hand wheel rotating 10 degree, the change of temperature
Amount.
The step I removes optical fiber coating using chemical solvent.Length immersion is dense needed for the stand-by optical fiber one end of N roots is pressed
Sulfuric acid 30~50 minutes, takes out the optical fiber that coat is stripped, and clear water is fully rinsed, and stripping is fully wiped with ethanol and acetone soln
Except the bare fibre 3~6 times of coat, each naked fibre is examined under a microscope, determine that processing procedure does not cause scar.
There is the horn mouth of cone quartz ampoule one end used by the step II, and bell-mouthed length is 5~15mm, naked light
It is fine to be located in horn mouth with the optical fiber junction for having coat.Horn mouth effectively protects bare fibre, it is to avoid optical fiber surface is damaged
Or there is disconnected fibre.
The big mouth diameter in horn mouth outer end is equal to the diameter of the fibre bundle for having coat, can just with the fibre bundle for having coat
Pass through and be defined.
Step III draws cone fixture to clamp the two ends of quartz ampoule, and horn mouth is in the drawing cone fixture of one end.
Compared with prior art, a kind of advantage of optical fiber buncher drawing method of the invention is：1st, quartz pipe sleeve fibre bundle,
Fibre bundle can be ideally constrained, the fibre bundle optimum tight arrangement mode that current optical fiber buncher is obtained after boring is drawn, duty is improved
Than the depth of parallelism and between core, and optical fiber need not be arranged with plenty of time energy, efficiency is significantly improved；2nd, with change flame lance highly
To change the distance of flame and quartz ampoule, realize the gradual precise control of quartz ampoule heating temperature, it is to avoid the big ripple of temperature
Dynamic, experiment shows, this method flame lance highly adjusts quartz ampoule heating temperature, is capable of achieving temperature adjustment precision and is less than 0.5
DEG C, so as to ensure to draw cone to obtain the optical fiber buncher of insertion loss qualified, and greatly shorten the regulating time that examination is drawn；3rd, machine
Tool stripping method cutlery easy damaged optical fiber, ablation reduces the fiber strength of ablating part, and the pickling removal optical fiber of this method is applied
Coating is more excellent, efficiency high, peels off complete and few to optical fiber damage；4th, horn mouth quartz ampoule makes band coat fibre bundle and removes
The bare fibre joining part of coat is in quartz ampoule horn mouth, it is to avoid optical fiber surface is damaged and disconnected fibre, realizes drawing
During and test process in the complete preservation of optical fiber.
Brief description of the drawings
Fig. 1 is that this optical fiber buncher drawing method draws cone 7 core fibre buncher schematic cross sections of gained；
Fig. 2 is that this optical fiber buncher drawing method draws cone 19 core fibre buncher schematic cross sections of gained；
Fig. 3 is that this optical fiber buncher drawing method draws cone 37 core fibre buncher schematic cross sections of gained.
Specific embodiment
This optical fiber buncher drawing method embodiment includes following job step：
Ith, optical fiber coating removal
This example 7 core fibre buncher to be prepared,
7 optical fiber one end 70mm long are immersed into the concentrated sulfuric acid 30 minutes, the optical fiber that coat is stripped is taken out, clear water is fully rushed
Wash, the bare fibre 5 times for divesting coat is fully wiped with ethanol and acetone soln, examine under a microscope each naked fibre, it is determined that
Processing procedure does not cause scar.
IIth, quartz pipe sleeve is fine
The pure quartz ampoule of glassy state of 50mm long is chosen, internal diameter can just be passed through for 7 bare fibre beams, i.e., internal diameter is equal to
7 bare fibre beam external diameters are 0.4mm, and the pipe thickness of quartz ampoule is 0.2mm；
There is the horn mouth of cone this example quartz ampoule one end, and bell-mouthed length is 10mm, the big mouth diameter 7 in horn mouth outer end
The fibre bundle that root has coat can just be passed through, i.e., a diameter of 0.8mm for having the fibre bundle of coat equal to 7；
During 7 optical fiber that step I is prepared are penetrated into quartz ampoule, bare fibre stretches out 15mm from the port of quartz ampoule straight tube,
Bare fibre and the optical fiber junction for having coat are located in horn mouth, and the optical fiber for having coat stayed in outside quartz ampoule horn mouth is long
It is 800~1000mm to spend；
IIIth, optical fiber buncher draws
There are a pair of drawings to bore fixture mobile platform and flame mobile platform on drawing device workbench used by this example, it is each electronic
Micropositioning stage connection drives each mobile platform movement, and control system connection each electronic micropositioning stage of control controls each mobile platform
Translational speed and distance.
There is the adjusting height for adjusting flame lance height on the electronic micropositioning stage of flame mobile platform.
The adjusting height of this example regulation flame lance height includes vertical screw rod and nut, there is handwheel on screw rod, rotates hand
Wheel rotates screw rod, and nut thereon is moved up and down.Flame lance is connected to nut, with nut synchronously move up and down.The spiral shell
The thread of bar is away from being 0.5mm.Hand wheel rotating one week, screw rod rotates 360 degree, and nut up or down moves 0.5mm.This example is turned with handwheel
Dynamic 10 degree are one grade and adjust flame lance highly, i.e., each flame lance height change is 0.0139mm.
The quartz ampoule two ends for penetrating fibre bundle that step II is completed are put into drawing cone fixture and are fixed, horn mouth is in side
Drawing cone fixture in drawing cone ratio according to designed by optical fiber buncher to be prepared and cone section length set and draw cone fixture movement flat
The outer shifting speed of platform, the translational speed of flame mobile platform, carry out drawing cone, and when quartz ampoule softens, the fibre bundle in it is also at
Soft state, draws cone fixture mobile platform to move to the left and right, and quartz ampoule and fibre bundle are drawn into and are fused into one
The optical fiber buncher of cone structure.
The fuel gas flow of flame is constant, the fluctuation of experimental situation airless；Quartz ampoule lower edge is in flame.
IVth, flame lance high precision control
The translational speed heated quarty tube of the flame mobile platform determined by step III, fixture is bored with the drawing that step III determines
Quartz ampoule is drawn and bored by the outer shifting speed of mobile platform, drawing cone fixture, if quartz ampoule draws bores shaping, flame lance now is highly
For initial flame jet pipe highly.
If step III draws the optical fiber buncher insertion loss index obtained by cone to be unsatisfactory for requiring, this example is sprayed by adjusting flame
Pipe Level Change quartz ampoule heating temperature, so as to reduce the insertion loss for drawing cone gained optical fiber buncher.
By testing regulation flame lance highly, the insertion loss that gained optical fiber buncher is drawn in examination is determined, flame lance is high
Spend after turning down certain value, quartz ampoule is increased with flame distance, the reduction of its heating temperature, if now trying the insertion of the optical fiber buncher of drawing
Loss is reduced, and illustrates that flame lance is highly turned down correctly, continues to turn down flame lance highly；If the height of flame lance is turned down
Afterwards, the insertion loss of the optical fiber buncher that examination is drawn is raised, and illustrates that flame lance height should be heightened.Repeatedly examination is drawn and regulation flame
Jet pipe highly, obtains optimal flame lance highly, to realize that the insertion loss of optical fiber buncher of drawing is qualified.
This example draws gained optical fiber buncher cross section after cone as shown in figure 1,1 optical fiber is located at center, and 1 layer of periphery lays 6
Root optical fiber, realizes close-packed arrays in quartz ampoule, and dutycycle is 0.5, and the depth of parallelism is less than or equal to 0.52mrad between core.
The present embodiment has also manufactured experimently 19 cores and 37 core fibre bunchers, its drawing in side sectional elevation as shown in Figures 2 and 3, in stone
Close-packed arrays are realized in English pipe, dutycycle is the depth of parallelism between 0.5, core and is respectively less than equal to 0.60mrad.
Above-described embodiment, only the purpose of the present invention, technical scheme and beneficial effect are further described is specific
Individual example, the present invention is not limited to this.All any modifications made within the scope of disclosure of the invention, equivalent, change
Enter, be all contained within protection scope of the present invention.
Claims (7)
1. a kind of optical fiber buncher drawing method, including following job step：
Ith, optical fiber coating removal
According to optical fiber buncher core number N to be prepared, N root optical fiber one end is removed into optical fiber coating, naked fibre 50~80mm long, tool
By drawing, cone compares body length and the cone section length of needs is determined, cleans dried for standby；
IIth, quartz pipe sleeve is fine
The fibre bundle that will be prepared is penetrated in quartz ampoule, and the bare fibre without coat stretches out from one end of quartz ampoule, there is coat
Optical fiber one end stay in outside the quartz ampoule other end；
The quartz ampoule is the pure quartz ampoule of glassy state, and length is 30~60mm, and its internal diameter is bare fibre beam external diameter, with bare fibre beam
Can just pass through and be defined；
The pipe thickness of quartz ampoule is less than 1mm
There are the fiber lengths of coat for 800~1000mm outside quartz ampoule, the bare fibre length without coat is 15~
20mm；
IIIth, optical fiber buncher draws
There are a pair of drawings to bore fixture mobile platform and flame mobile platform on drawing device workbench used, each electronic micropositioning stage connects
Tape splicing moves each mobile platform movement, and control system connection each electronic micropositioning stage of control controls the translational speed of each mobile platform
And distance；
There is the adjusting height for adjusting flame lance height on the electronic micropositioning stage of flame mobile platform；
The fuel gas flow of flame is constant, the fluctuation of experimental situation airless；Quartz ampoule lower edge is in flame；
The quartz ampoule two ends for penetrating fibre bundle that step II is completed are put into drawing cone fixture and are fixed, according to optical fiber collection to be prepared
Drawing cone ratio and cone section length designed by beam device set the translational speed of flame mobile platform and draw the outer of cone fixture mobile platform
Move speed；
When quartz ampoule softens, the fibre bundle in it is also at soft state, draws cone fixture mobile platform to move to the left and right, stone
It is the optical fiber buncher of the cone structure being fused into one that English pipe and fibre bundle are drawn into；
IVth, flame lance high precision control
If step III draws the optical fiber buncher insertion loss index obtained by cone to be unsatisfactory for requiring that this method is by adjusting flame lance
Level Change quartz ampoule heating temperature, reduces the insertion loss for drawing cone gained optical fiber buncher；
By testing regulation flame lance highly, the insertion loss that gained optical fiber buncher is drawn in examination is determined, flame lance is highly adjusted
After low certain value, quartz ampoule is increased with flame distance, the reduction of its heating temperature, if now trying the insertion loss of the optical fiber buncher of drawing
Reduce, illustrate that flame lance is highly turned down correctly, continue to turn down flame lance highly；After if the height of flame lance is turned down, examination
The insertion loss of the optical fiber buncher of drawing is raised, and illustrates that flame lance height should be heightened.Repeatedly examination is drawn and regulation flame lance
Highly, optimal flame lance is obtained highly.
2. the optical fiber buncher drawing method according to claim 1, it is characterised in that：
The adjusting height of the regulation flame lance height includes vertical screw rod and nut, there is handwheel on screw rod, and rotating handwheel makes
Screw rod is rotated, and nut thereon is moved up and down.Flame lance is connected to nut, with nut synchronously move up and down；The screw rod
Thread is away from being 0.4~0.6mm.Hand wheel rotating one week, screw rod rotates 360 degree, and nut up or down moves 0.4~0.6mm；This method
With 10 degree of hand wheel rotating be one grade of regulation flame lance highly.
3. the optical fiber buncher drawing method according to claim 1, it is characterised in that：
When step IV examination is drawn, the translational speed heated quarty tube of the flame mobile platform determined by step III, with step III
Quartz ampoule is drawn and bored by the outer shifting speed of the drawing cone fixture mobile platform of determination, drawing cone fixture, if quartz ampoule draws bores shaping, now
Flame lance highly for initial flame jet pipe highly.
4. the optical fiber buncher drawing method according to claim 1, it is characterised in that：
The step I removes optical fiber coating using chemical solvent.The length immersion concentrated sulfuric acid needed for the stand-by optical fiber one end of N roots is pressed
30~50 minutes, the optical fiber that coat is stripped is taken out, clear water is fully rinsed, and is fully wiped with ethanol and acetone soln and is divested painting
The bare fibre of coating 3~6 times, examines under a microscope each naked fibre, determines that processing procedure does not cause scar.
5. the optical fiber buncher drawing method according to claim 1, it is characterised in that：
Quartz ampoule one end used by the step II have cone horn mouth, bell-mouthed length be 5~15mm, bare fibre with
The optical fiber junction for having coat is located in horn mouth.
6. the optical fiber buncher drawing method according to claim 1, it is characterised in that：
The big mouth diameter in horn mouth outer end is equal to the diameter of the fibre bundle for having coat, can just with the fibre bundle for having coat
Pass through and be defined.
7. the optical fiber buncher drawing method according to claim 5, it is characterised in that：
The step III draws cone fixture to clamp the two ends of quartz ampoule, and horn mouth is in drawing cone fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611248452.7A CN106855649A (en) | 2016-12-29 | 2016-12-29 | A kind of optical fiber buncher drawing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611248452.7A CN106855649A (en) | 2016-12-29 | 2016-12-29 | A kind of optical fiber buncher drawing method |
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| CN106855649A true CN106855649A (en) | 2017-06-16 |
Family
ID=59126625
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6676307B1 (en) * | 2000-06-14 | 2004-01-13 | Ciena Corporation | Method and system for controlling splice attenuation |
| US20090202204A1 (en) * | 2006-03-17 | 2009-08-13 | Crystal Fibre A/S | Optical coupler, a method of its fabrication and use |
| CN101672951A (en) * | 2009-10-21 | 2010-03-17 | 烽火通信科技股份有限公司 | Optical fiber fused conic clinker |
| CN102841408A (en) * | 2011-06-23 | 2012-12-26 | 中国科学院西安光学精密机械研究所 | Production process of optical fiber combiner based on capillary tube |
-
2016
- 2016-12-29 CN CN201611248452.7A patent/CN106855649A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6676307B1 (en) * | 2000-06-14 | 2004-01-13 | Ciena Corporation | Method and system for controlling splice attenuation |
| US20090202204A1 (en) * | 2006-03-17 | 2009-08-13 | Crystal Fibre A/S | Optical coupler, a method of its fabrication and use |
| CN101672951A (en) * | 2009-10-21 | 2010-03-17 | 烽火通信科技股份有限公司 | Optical fiber fused conic clinker |
| CN102841408A (en) * | 2011-06-23 | 2012-12-26 | 中国科学院西安光学精密机械研究所 | Production process of optical fiber combiner based on capillary tube |
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Application publication date: 20170616 |