CN102730959A - Manufacturing method of microstructure optical fiber preform for FTTH (fiber to the home) - Google Patents
Manufacturing method of microstructure optical fiber preform for FTTH (fiber to the home) Download PDFInfo
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- CN102730959A CN102730959A CN2012101851219A CN201210185121A CN102730959A CN 102730959 A CN102730959 A CN 102730959A CN 2012101851219 A CN2012101851219 A CN 2012101851219A CN 201210185121 A CN201210185121 A CN 201210185121A CN 102730959 A CN102730959 A CN 102730959A
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- 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
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
- C03B37/0122—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube for making preforms of photonic crystal, microstructured or holey optical fibres
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- 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
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/01228—Removal of preform material
- C03B37/01231—Removal of preform material to form a longitudinal hole, e.g. by drilling
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/14—Non-solid, i.e. hollow products, e.g. hollow clad or with core-clad interface
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/42—Photonic crystal fibres, e.g. fibres using the photonic bandgap PBG effect, microstructured or holey optical fibres
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Abstract
The invention discloses a manufacturing method of a microstructure optical fiber preform for FTTH, and relates to the new material field. The method comprises the following steps: preparing an optical fiber rod through adopting a routine communication optical fiber preparation method, drilling a certain number apertures with a same diameter in a same angle manner at the outboard of the optical fiber rod along the circumferential direction, cleaning the optical fiber rod having the well drilled apertures with an acid solution, cleaning with deionized water, drying, connecting a tail tube to one end of the optical fiber rod, and connecting a tapered quartz head to the other end of the optical fiber rod. The manufacturing method of the invention allows micro-porous high-purity preparation and micro-porous accurate fixing of the microstructure optical fiber preform for the FTTH to be realized, so the polarization mode characteristic and the bending loss characteristic of the microstructure optical fiber for the FTTH are effectively improved, problems of secondary impurity introduction and pollution brought by a micropore formation link in common microstructure optical fiber manufacturing processes are avoided, and the attenuation characteristic of the microstructure optical fiber for the FTTH is guaranteed.
Description
Technical field
The present invention relates to field of new, particularly relate to the method for manufacture of a kind of FTTH (Fiber To The Home, Fiber to the home) with the microstructured optical fibers prefabricated rods.
Background technology
The explosive demand of infotech has driven the develop rapidly of FTTH.Fiber-to-the-home application demand impels optical fiber technology to develop to small-bend radius, low decay direction, and simultaneously, other optical property indexs of small-bend radius single-mode fiber still can G.652 optical fiber be consistent with single-mode fiber with general communication.G.657 optical fiber is under minimum bending diameter (below the 5mm) for routine, and the decay of optical fiber increases rapidly.This has limited the scope of its application, well uses in last application of hundred meters that is difficult in also at present that Fiber to the home.FTTH uses microstructured optical fibers, is a kind of microstructured optical fibers of multi-hole type, has good bending property, in that (the additional optical fiber decay under the 1mm～5mm) still can be controlled in the reasonable scope, adapts to very that Fiber to the home waits complicated applied environment under the minimum bending diameter.
Conventional porous microstructure optical fibre mainly adopts method preparations such as kapillary method of piling, kapillary bundle algorithm.The shortcoming of these methods mainly is to be difficult in the manufacturing processed guarantee high-purity environment and the accurate typing that is difficult to guarantee micropore.Because kapillary can directly contact external environment in manufacturing processed; Be difficult to reach high-purity characteristic of general single mode fiber prefabricated rods ME, make the Reduction Level that utilizes kapillary to form the microstructured optical fibers prefabricated rods of micropore be difficult to reach the Reduction Level of general communication optical fiber.This is the key constraints that microstructured optical fibers is difficult to have been used in a large scale.Simultaneously; Because kapillary is in accumulation and pack; Misplace easily, this possibly cause the angle meeting between micropore and the micropore inconsistent, the deviation that causes pattern to be revealed; Thereby cause the unusual of optic fiber polarization mould dispersion, make microstructured optical fibers on conventional optical index such as characteristics such as chromatic dispersion and polarization mode dispersion, also can have certain gap with the level of general communication single-mode fiber.For example, the patent No. is the Chinese invention patent of " ZL 200410002286.3 ", the mode that adopts multiple material pieces to combine, preparation photonic crystral optical fiber preform, the manufacturing requirement that does not also reach telecommunication optical fiber; Application number is in the Chinese invention patent application of " 200410093901.6 "; Adopt a kind of mode of femtosecond laser; Carry out the preparation of microstructured optical fibers prefab; The micropore of the preform of its preparation is fit to the microstructured optical fibers of preparation complex construction below 1mm, not too be fit to the preparation high-performance, FTTH uses the microstructured optical fibers prefabricated rods cheaply.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of above-mentioned background technology; A kind of high quality is provided, FTTH is with the method for manufacture of microstructured optical fibers prefabricated rods cheaply; Realized that FTTH accurately finalizes the design with high-purity preparation of the micropore of microstructured optical fibers prefabricated rods and micropore; Effectively improve polarization mode characteristic and the bending loss characteristic of FTTH with microstructured optical fibers; Avoided micropore in the common microstructured optical fibers ME to form the secondary impurities that link brings and introduced and pollution problem, ensured the attenuation characteristic of FTTH with microstructured optical fibers.
FTTH provided by the invention is with the method for manufacture of microstructured optical fibers prefabricated rods; May further comprise the steps: S1, employing general communication method for preparing optical fiber are prepared the single-mode fiber prefabricated rods; Said single-mode fiber prefabricated rods comprises that one is mixed the quartzy sandwich layer of germanium and the quartzy covering of the pure silicon that is positioned at the sandwich layer periphery, and sandwich layer and quartzy covering are concentric(al) circles; S2, in the outside of single-mode fiber prefabricated rods the identical hole of diameter of along the circumferential direction equal angular brill some amount; S3, hole-drilled single-mode fiber prefabricated rods is cleaned up with acid solution; Re-use that washed with de-ionized water is clean, after the oven dry; At the continuous tail pipe of a termination of single-mode fiber prefabricated rods; And the tail rod that continues and be used for clamping at tail pipe, continue one section at the other end of single-mode fiber prefabricated rods and to be convenient to the quartzy chieftain of wire drawing fused taper, so far a FTTH completes with the microstructured optical fibers prefabricated rods.
In technique scheme, the method for preparing optical fiber of general communication described in the step S1 comprises VAD method, PCVD method and MCVD method.
In technique scheme, step S2 may further comprise the steps: in the quartzy covering outside the sandwich layer of single-mode fiber prefabricated rods, be the center of circle with the center of sandwich layer, each pore distribution is on same circle, and the angle of the Kong Xinyu sandwich layer line of centres in each hole equates; Diameter according to the hole that calculates is selected drilling rod, and the single-mode fiber prefabricated rods is placed on the punch, uses drilling rod to get out the hole of desired number successively.
In technique scheme, the deviation between the outward flange in each hole of being bored among the step S2 and the outer peripheral distance of single-mode fiber prefabricated rods keeps consistency the position of each hole and sandwich layer in 1mm.
In technique scheme, the quantity in the hole of being bored among the step S2 is even number.
In technique scheme, the diameter in the hole of being bored among the step S2 is between 2～12mm.
In technique scheme, the diameter in said hole adopts high-energy laser as drilling rod between 2～5mm the time; The diameter in hole adopts metal drill pipe as drilling rod between 5～12mm the time.
In technique scheme, further comprising the steps of after the step S3: produced FTTH is suspended on the wire-drawer-tower with the microstructured optical fibers prefabricated rods, and under 2200 ℃ high temperature, fusion draw becomes FTTH to use microstructured optical fibers.
In technique scheme, at the 1625nm wave band, when 1 bending diameter was the circle of 2mm, bending loss was at 0.20～0.25dB with microstructured optical fibers for said FTTH, and the polarization mode dispersion coefficient of this optical fiber is at 0.045～0.051ps/km
1/2, at the 0.191～0.202dB/km that decays to of 1550nm wave band, other optical property indexs are also G.652 consistent with the general communication single-mode fiber.
In technique scheme; Adopt among the step S1 bore among VAD technology, the step S2 FTTH that 6 holes produce with microstructured optical fibers at the 1625nm wave band; When 1 bending diameter was the circle of 2mm, bending loss was at 0.22dB, and the polarization mode dispersion coefficient of this optical fiber is at 0.048ps/km
1/2, at the 0.191dB/km that decays to of 1550nm wave band, other optical property indexs are also G.652 consistent with the general communication single-mode fiber.
Compared with prior art, advantage of the present invention is following:
(1) the present invention adopts the general communication preform to prepare the single-mode fiber prefabricated rods, has fully guaranteed to utilize the long low decay transport property of all-wave and the dispersion property of the optical fiber that this single-mode fiber prefabricated rods is drawn into.Owing to adopt conventional single-mode fiber prefabricated rods fully as operand; Each item optical index and daily control also can be carried out very easily; Method in conjunction with Fully-mechanized drilling operation; Guarantee preparation FTTH with the high-purity preparation of the micropore of microstructured optical fibers prefabricated rods, can realize high quality, FTTH is with the preparation of microstructured optical fibers prefabricated rods cheaply.
(2) the present invention adopts the high accuracy mechanical locator meams; Around the single-mode fiber prefabricated rods, utilize a drilling rod to come back operations, realize that porous gets out moulding; Each micropore is all come out by same bit drills, has fully guaranteed the size identical property and the circularity consistence of each micropore.In addition,, can realize the micron order location of micropore, fully ensure position uniform distribution along the circumferential direction between each micropore through the high accuracy mechanical location.Not only the location accurately; And the dimensional uniformity between the Kong Yukong is good; The circularity consistence in hole itself is also fine, has realized that through these three aspects FTTH accurately finalizes the design with the micropore of microstructured optical fibers prefabricated rods, guarantees sandwich layer micropore distribution consistence on every side; Thereby can effectively improve polarization mode characteristic and the bending loss characteristic of FTTH, in the wide application prospect that has of Fiber to the home the fiber optic communication field of Denging with microstructured optical fibers.
(3) the present invention utilizes mechanical drilling machine around the sandwich layer of single-mode fiber prefabricated rods; Along the circumferential direction; Beat to equal angles the isodiametric hole of some amount; The tail rod that directly continues after cleaning up is placed on and is drawn into microstructured optical fibers on the High Temperature Furnaces Heating Apparatus, has realized the ease of Use and the mechanized operation of whole preform ME, ensures in the in type quartz layer and can not introduce new impurity; Thereby avoid adopting the kapillary method of piling to prepare microstructured optical fibers and not only itself can introduce new impurity; And in the fused quartz layer, also have the phenomenon that impurity is introduced, and avoided micropore in the common microstructured optical fibers ME to form the secondary impurities that link brings fully and introduced and pollution problem, ensure the attenuation characteristic of FTTH with microstructured optical fibers.
Description of drawings
Fig. 1 is that the embodiment of the invention prepares the schema of FTTH with the microstructured optical fibers prefabricated rods.
Fig. 2 is the mechanical positioning boring synoptic diagram of single-mode fiber prefabricated rods in the embodiment of the invention.
Fig. 3 is the structural representation of FTTH microstructured optical fibers prefabricated rods of tail pipe aftershaping of continuing in the embodiment of the invention.
Among the figure: 1-single-mode fiber prefabricated rods, 2-sandwich layer, the quartzy covering of 3-, 4-hole, 5-drilling rod, 6-tail pipe, 7-tail rod, the quartzy chieftain of 8-.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is made further detailed description.
To the additional attenuation of the minimum bending radius of small-bend radius single-mode fiber and with other optical property index request of communication unit mode fiber level; Simultaneously; From being convenient to the angle of large-scale production; The embodiment of the invention provides a kind of FTTH method of manufacture with the microstructured optical fibers prefabricated rods, and referring to shown in Figure 1, this method of manufacture may further comprise the steps:
S1, employing general communication method for preparing optical fiber are prepared single-mode fiber prefabricated rods 1, for example PCVD (PCVD) method, MCVD (improved chemical vapour deposition) method and VAD (axial vapor deposition) method.This single-mode fiber prefabricated rods 1 comprises one and mixes the quartzy sandwich layer 2 of germanium and the quartzy covering 3 of the pure silicon that is positioned at sandwich layer 2 peripheries, and the two is a concentric(al) circles.
S2, in the identical hole 4 of the diameter of the along the circumferential direction equal angular brill some amount in the outside of single-mode fiber prefabricated rods 1 (being generally even number), the diameter in hole 4 is according to the difference of single-mode fiber prefabricated rods 1 diameter, value is between 2～12mm.On quartzy covering 3, be the center of circle with the center of sandwich layer 2, and get suitable diameter according to the diameter of sandwich layer 2 and draw a circle, the quantity in the hole 4 of boring as required; For example, bore 6 holes 4, referring to shown in Figure 2; Then on circle, get 6 points, the angle between each point is 60 degree, then according to the diameter of calculating good hole 4; Select a suitable drilling rod 5, single-mode fiber prefabricated rods 1 is placed on the punch, use this root drilling rod 5 to get 6 holes 4 successively.
The diameter in hole 4 is between 2～5mm the time; Adopt suitable heavy caliber high-energy laser as drilling rod 5, single-mode fiber prefabricated rods 1 is placed on the position of drilling rod 5, regulate the bore of outgoing laser beam; The diameter in the hole 4 that makes it and will bore is consistent, gets 6 holes 4 successively.The diameter in hole 4 adopts metal drill pipe as drilling rod 5 between 5～12mm the time.If be distributed in the micropore skewness around the single-mode fiber prefabricated rods 1; Then can cause the leakage of light on the one hand; Make the bending loss characteristic variation of the optical fiber of drawing; Can make on the other hand that the circumference of optical fiber on former core diameter direction plane of living in is stressed to be existed asymmetricly, cause the polarization mode bad characteristic of optical fiber, thereby influence the normal use of optical fiber.Therefore, bored 6 holes 4 after, also to measure the outward flange and the single-mode fiber prefabricated rods 1 outer peripheral distance L 1 and the L2 in symmetric two holes 4, the two deviation keeps consistency each hole 4 and the position of sandwich layer 2, as far as possible uniform distribution in 1mm.
S3, the single-mode fiber prefabricated rods 1 usefulness acid solution that will bore hole 4 clean up; Re-use clean, the oven dry of washed with de-ionized water; Referring to shown in Figure 3, at the continuous tail pipe 6 of a termination of single-mode fiber prefabricated rods 1, and the tail rod 7 that on tail pipe 6, continues and be used for clamping; The other end of the single-mode fiber prefabricated rods 1 quartzy chieftain 8 of one section taper that continues, be convenient to the wire drawing fusion.So complete FTTH just completes with the microstructured optical fibers prefabricated rods.
Produced FTTH is suspended on the wire-drawer-tower through high-temperature fusion with the microstructured optical fibers prefabricated rods draws, just can become FTTH to use microstructured optical fibers.Adopt the bend-insensitive microstructured optical fibers of this prepared, at the 1625nm wave band, when 1 bending diameter was the circle of 2mm, bending loss had good little bending loss characteristic at 0.20～0.25dB; The PMD of this optical fiber (polarization mode dispersion) coefficient is at 0.045～0.051ps/km
1/2, at the 0.191～0.202dB/km that decays to of 1550nm wave band, can reach the level of general communication single-mode fiber, other optical property indexs are also G.652 consistent with the general communication single-mode fiber.
Be elaborated through 3 specific embodiments below.
Embodiment 1:VAD technology, 6 holes of brill
Adopt the VAD prepared to go out single-mode fiber prefabricated rods 1; The diameter of single-mode fiber prefabricated rods 1 reaches 150mm, is the center of circle with sandwich layer 2 centers, and drawing diameter is the circle of 20～40mm; Referring to shown in Figure 2; Confirm to need to bore 6 holes 4, the angle of Kong Xinyu sandwich layer 2 lines of centres in each hole 4 is 60 degree, and the diameter in each hole 4 is 12mm.Selecting bore is the drilling rod 5 of 12mm, and single-mode fiber prefabricated rods 1 is placed on the punch, utilizes same drilling rod, successively in the quartzy covering 3 of single-mode fiber prefabricated rods 1, according to confirming that in advance good position comes outbreak out 6 holes 4.After boring finishes; With the diameter line of single-mode fiber prefabricated rods 1 through sandwich layer 2 centers of circle is axle; Measure the outward flange and the single-mode fiber prefabricated rods 1 outer peripheral distance in each hole 4, obtain 6 range data, the deviation between these 6 distances needs just to meet the requirements with interior at 1mm.
With having bored hole 4 and having cleaned up through detecting qualified single-mode fiber prefabricated rods 1 usefulness acid solution; Re-use clean, the oven dry of washed with de-ionized water; Referring to shown in Figure 3, at the continuous tail pipe 6 of a termination of single-mode fiber prefabricated rods 1, and the tail rod 7 that on tail pipe 6, continues and be used for clamping; The other end of the single-mode fiber prefabricated rods 1 quartzy chieftain 8 of one section taper that continues, be convenient to the wire drawing fusion.So complete FTTH just completes with the microstructured optical fibers prefabricated rods.
Produced FTTH is suspended on the wire-drawer-tower with the microstructured optical fibers prefabricated rods, and under the high temperature about 2200 ℃, fusion draw becomes FTTH to use microstructured optical fibers.This optical fiber is at the 1625nm wave band, and when 1 bending diameter was the circle of 2mm, bending loss was at 0.22dB, and the polarization mode dispersion coefficient of optical fiber has only 0.048ps/km simultaneously
1/2, at the 0.191dB/km that decays to of 1550nm wave band, other optical property indexs are also G.652 consistent with the general communication single-mode fiber.
Embodiment 2:PCVD technology, 12 holes of brill
Adopt the PCVD prepared to go out single-mode fiber prefabricated rods 1; The diameter of single-mode fiber prefabricated rods 1 is 80mm; With sandwich layer 2 centers is the center of circle, and drawing diameter is the circle of 15～30mm, confirms to need to bore 12 holes 4; The angle of Kong Xinyu sandwich layer 2 lines of centres in each hole 4 is 30 degree, and the diameter in each hole 4 is 6mm.Selecting bore is the drilling rod 5 of 6mm, and single-mode fiber prefabricated rods 1 is placed on the punch, utilizes same drilling rod, successively in the quartzy covering 3 of single-mode fiber prefabricated rods 1, according to confirming that in advance good position comes outbreak out 12 holes 4.After boring finishes; With the diameter line of single-mode fiber prefabricated rods 1 through sandwich layer 2 centers of circle is axle; Measure the outward flange and the single-mode fiber prefabricated rods 1 outer peripheral distance in each hole 4, obtain 12 range data, the deviation between these 12 distances needs just to meet the requirements with interior at 1mm.
With having bored hole 4 and having cleaned up through detecting qualified single-mode fiber prefabricated rods 1 usefulness acid solution; Re-use clean, the oven dry of washed with de-ionized water, referring to shown in Figure 3, at the continuous tail pipe 6 of a termination of single-mode fiber prefabricated rods 1; And the tail rod 7 that on tail pipe 6, continues and be used for clamping; The other end of the single-mode fiber prefabricated rods 1 quartzy chieftain 8 of one section taper that continues, be convenient to the wire drawing fusion, so complete FTTH just completes with the microstructured optical fibers prefabricated rods.
Produced FTTH is suspended on the wire-drawer-tower with the microstructured optical fibers prefabricated rods, and under the high temperature about 2200 ℃, fusion draw becomes FTTH to use microstructured optical fibers.This optical fiber is at the 1625nm wave band, and when 1 bending diameter was the circle of 2mm, bending loss was at 0.20dB, and the polarization mode dispersion coefficient of optical fiber has only 0.045ps/km simultaneously
1/2, at the 0.195dB/km that decays to of 1550nm wave band, other optical property indexs are also G.652 consistent with the general communication single-mode fiber.
Embodiment 3:MCVD technology, 12 holes of brill
Adopt the MCVD prepared to go out single-mode fiber prefabricated rods 1; Single-mode fiber prefabricated rods 1 diameter is 50mm, and sandwich layer 2 diameters are 5.0mm, is the center of circle with sandwich layer 2 centers; Drawing diameter is the circle of 10～20mm; Confirm to need to bore 12 holes 4, the angle of Kong Xinyu sandwich layer 2 lines of centres in each hole 4 is 30 degree, and the diameter in each hole 4 is 2mm.Selecting lasing beam diameter is the laser apparatus of 2mm; The laser output of laser apparatus is installed to the correspondence position of punch; Single-mode fiber prefabricated rods 1 is placed on the punch; Utilize same laser output, successively in the quartzy covering 3 of single-mode fiber prefabricated rods 1, according to confirming that in advance good position comes outbreak out 12 holes 4.After boring finishes; With the diameter line of single-mode fiber prefabricated rods 1 through sandwich layer 2 centers of circle is axle; Measure the outward flange and the single-mode fiber prefabricated rods 1 outer peripheral distance in each hole 4, obtain 12 range data, the deviation between these 12 distances needs just to meet the requirements with interior at 1mm.
With having bored hole 4 and having cleaned up through detecting qualified single-mode fiber prefabricated rods 1 usefulness acid solution; Re-use clean, the oven dry of washed with de-ionized water, referring to shown in Figure 3, at the continuous tail pipe 6 of a termination of single-mode fiber prefabricated rods 1; And the tail rod 7 that on tail pipe 6, continues and be used for clamping; The other end of the single-mode fiber prefabricated rods 1 quartzy chieftain 8 of one section taper that continues, be convenient to the wire drawing fusion, so complete FTTH just completes with the microstructured optical fibers prefabricated rods.
Produced FTTH is suspended on the wire-drawer-tower with the microstructured optical fibers prefabricated rods, and under the high temperature about 2200 ℃, fusion draw becomes FTTH to use microstructured optical fibers.This optical fiber is at the 1625nm wave band, and when 1 bending diameter was the circle of 2mm, bending loss was at 0.25dB, and the polarization mode dispersion coefficient of optical fiber has only 0.051ps/km simultaneously
1/2, at the 0.202dB/km that decays to of 1550nm wave band, other optical property indexs are also G.652 consistent with the general communication single-mode fiber.
Obviously; Those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention; Belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention comprises these changes and modification interior.The content of not doing in this specification sheets to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (10)
1. a FTTH is characterized in that may further comprise the steps with the method for manufacture of microstructured optical fibers prefabricated rods:
S1, employing general communication method for preparing optical fiber are prepared single-mode fiber prefabricated rods (1); Said single-mode fiber prefabricated rods (1) comprises the quartzy covering (3) mixing the quartzy sandwich layer (2) of germanium and be positioned at the peripheral pure silicon of sandwich layer (2), and sandwich layer (2) and quartzy covering (3) are concentric(al) circles;
S2, in the outside of single-mode fiber prefabricated rods (1) the identical hole (4) of the diameter of along the circumferential direction equal angular brill some amount;
S3, the single-mode fiber prefabricated rods (1) that will bore hole (4) clean up with acid solution; Re-use that washed with de-ionized water is clean, after the oven dry; At the continuous tail pipe (6) of a termination of single-mode fiber prefabricated rods (1); And the tail rod (7) that continues and be used for clamping at tail pipe (6), continue one section at the other end of single-mode fiber prefabricated rods (1) and to be convenient to the quartzy chieftain (8) of wire drawing fused taper, so far a FTTH completes with the microstructured optical fibers prefabricated rods.
2. FTTH as claimed in claim 1 is characterized in that with the method for manufacture of microstructured optical fibers prefabricated rods: the method for preparing optical fiber of general communication described in the step S1 comprises VAD method, PCVD method and MCVD method.
3. FTTH as claimed in claim 2 is with the method for manufacture of microstructured optical fibers prefabricated rods; It is characterized in that: step S2 may further comprise the steps: in the quartzy covering (3) outside the sandwich layer (2) of single-mode fiber prefabricated rods (1); Center with sandwich layer (2) is the center of circle; Each hole (4) is distributed on the same circle, and the angle of Kong Xinyu sandwich layer (2) line of centres of each hole (4) equates; Diameter according to the hole that calculates (4) is selected drilling rod (5), and single-mode fiber prefabricated rods (1) is placed on the punch, uses drilling rod (5) to get out the hole (4) of desired number successively.
4. FTTH as claimed in claim 3 is with the method for manufacture of microstructured optical fibers prefabricated rods; It is characterized in that: the deviation between the outward flange in each hole (4) of being bored among the step S2 and the outer peripheral distance of single-mode fiber prefabricated rods (1) keeps consistency each hole (4) and the position of sandwich layer (2) in 1mm.
5. FTTH as claimed in claim 3 is characterized in that with the method for manufacture of microstructured optical fibers prefabricated rods: the quantity of the hole of being bored among the step S2 (4) is even number.
6. FTTH as claimed in claim 3 is characterized in that with the method for manufacture of microstructured optical fibers prefabricated rods: the diameter of the hole of being bored among the step S2 (4) is between 2～12mm.
7. FTTH as claimed in claim 6 is characterized in that with the method for manufacture of microstructured optical fibers prefabricated rods: the diameter of said hole (4) adopts high-energy laser as drilling rod (5) between 2～5mm the time; The diameter in hole (4) adopts metal drill pipe as drilling rod (5) between 5～12mm the time.
Like each described FTTH in the claim 2 to 7 with the method for manufacture of microstructured optical fibers prefabricated rods; It is characterized in that: further comprising the steps of after the step S3: that produced FTTH is suspended on the wire-drawer-tower with the microstructured optical fibers prefabricated rods; Under 2200 ℃ high temperature, fusion draw becomes FTTH to use microstructured optical fibers.
9. FTTH as claimed in claim 8 is with the method for manufacture of microstructured optical fibers prefabricated rods; It is characterized in that: said FTTH with microstructured optical fibers at the 1625nm wave band; When 1 bending diameter is the circle of 2mm; Bending loss is at 0.20～0.25dB, and the polarization mode dispersion coefficient of this optical fiber is at 0.045～0.051ps/km
1/2, at the 0.191～0.202dB/km that decays to of 1550nm wave band, other optical property indexs are also G.652 consistent with the general communication single-mode fiber.
10. FTTH as claimed in claim 9 is with the method for manufacture of microstructured optical fibers prefabricated rods; It is characterized in that: adopt among the step S1 bore among VAD technology, the step S2 FTTH that 6 holes (4) produce with microstructured optical fibers at the 1625nm wave band; When 1 bending diameter is the circle of 2mm; Bending loss is at 0.22dB, and the polarization mode dispersion coefficient of this optical fiber is O.048ps/km
1/2, at the 0.191dB/km that decays to of 1550nm wave band, other optical property indexs are also G.652 consistent with the general communication single-mode fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185121.9A CN102730959B (en) | 2012-06-06 | 2012-06-06 | Manufacturing method of microstructure optical fiber preform for FTTH (fiber to the home) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185121.9A CN102730959B (en) | 2012-06-06 | 2012-06-06 | Manufacturing method of microstructure optical fiber preform for FTTH (fiber to the home) |
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| Publication Number | Publication Date |
|---|---|
| CN102730959A true CN102730959A (en) | 2012-10-17 |
| CN102730959B CN102730959B (en) | 2014-12-31 |
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| WO2024099033A1 (en) * | 2022-11-10 | 2024-05-16 | 长飞光纤光缆股份有限公司 | Integrated hollow-core optical fiber preform, optical fiber and manufacturing method therefor |
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