CN105629375A - Optical fiber - Google Patents
Optical fiber Download PDFInfo
- Publication number
- CN105629375A CN105629375A CN201610199577.9A CN201610199577A CN105629375A CN 105629375 A CN105629375 A CN 105629375A CN 201610199577 A CN201610199577 A CN 201610199577A CN 105629375 A CN105629375 A CN 105629375A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- fibre core
- light
- fiber
- urethane acrylate
- 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
Classifications
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02033—Core or cladding made from organic material, e.g. polymeric material
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
- G02B6/02347—Longitudinal structures arranged to form a regular periodic lattice, e.g. triangular, square, honeycomb unit cell repeated throughout cladding
Abstract
The present invention relates to optical fiber. The optical fiber comprises a fiber core and a cladding; the fiber core is composed of two fiber cores with different refractive indexes; the cladding winds the fiber core around the fiber core, the cladding includes a one-time coated layer and a twice coated layer formed by ultraviolet ray curing type resin, and the ultraviolet ray curing type resin includes urethane acrylate and photoinitiator, wherein the polyisocyanate component in the urethane acrylate is aromatic isocyanate; and the one-time coated layer has a plurality of holes extending along the center shaft of the fiber, and the residual stress in the internal areas at the inner sides of the circumcircles of the holes is compression stress. The optical fiber is good in yellowing resistance, low in transmission loss and high in breaking ability.
Description
Technical field
The present invention relates to optical communication optical fiber technology, in particular to a kind of optical fiber.
Background technology
The general structure of optical fiber is the Primary coating layer forming soft matter at the outer surface of bare glass, forms the secondary coating of hard again in its periphery. As the material used in Primary coating layer and secondary coating, adopt ultraviolet curing resin more; As the ultraviolet curing resin used in the coating material of optical fiber, known urethane acrylate, but existing coating optical fiber heat, light, its coating material easily goes bad, if placed for a long time when the illumination such as outdoor or luminescent lamp are penetrated or under high hot condition, then occurring yellow change to wait colour developing or variable color, so-called weathering resistance, thermotolerance are not good. This be due to optical fiber be irradiated by light time, remain in the decomposition of light-initiated dose in coating, produce free radical, alos is become. Further, it is known that have the optical fiber in multiple holes that the central shaft along optical fiber extends, compared with the solid core fibres without this kind of hole, the optical fiber with this kind of hole can have more characteristic.
Summary of the invention
The technical problem to be solved in the present invention is, it is provided that the optical fiber that a kind of yellowing resistance is good and the little resistance to fracture of transmission loss is strong.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is, this optical fiber comprises fibre core and covering, described fibre core is made up of the fibre core doping of two kinds of different refractivities, described covering in the outside of fibre core around described fibre core, described covering comprises the Primary coating layer and secondary coating that are formed by ultraviolet curing resin, and the polymeric polyisocyanate composition that described ultraviolet curing resin contains in urethane acrylate and light-initiated dose and this urethane acrylate is aromatic series class polymeric polyisocyanate; Described Primary coating layer has multiple holes that the central shaft along optical fiber extends, and the unrelieved stress in interior region inside the circumscribed circle in described hole is stress under compression.
Adopt technique scheme, by adopting the fibre core of the fibre core doping composition of two kinds of different refractivities can adapt to the transmission of different distance, make transmission loss little; Covering adopt Primary coating layer that ultraviolet curing resin formed and secondary coating this optical fiber can be made to have good yellowing resistance; In multiple holes that covering extends along the central shaft of optical fiber, it is possible to strengthen the toughness of this optical fiber, make optical fiber not frangibility.
Improve further and it is; light-initiated dose in described Primary coating layer comprises 2; 4; 6-trimethylbenzoyldiphenyl oxide compound; in described secondary coating light-initiated dose is 2; the composition of 4,6-trimethylbenzoyldiphenyl oxide compound and methyl phenyl ketone photoinitiator, and in coating material 1g the molar content of unreacted light-initiated dose less than 2.4 �� 10-3, described methyl phenyl ketone photoinitiator is 1-hydroxycyclohexyl phenyl ketone.
Improving further and be, described stress under compression is more than 20MPa. With the volumetric molar concentration height of the haloid element being positioned at around interior region of the molar concentration rate covering of the haloid element in the interior region inside the circumscribed circle of hole when; In interior region, codoped has chlorine, iodine and fluorine.
Improve further and it is, wherein a kind of fibre core doped with Ge, another kind of fibre core doped with Al.
Improving further and be, described aromatic series class polymeric polyisocyanate is tolylene diisocyanate.
Compared with prior art, the invention has the beneficial effects as follows: this optical fiber yellowing resistance is good and the little resistance to fracture of transmission loss is strong.
Accompanying drawing explanation
In order to make the content of the present invention more easily be clearly understood, below according to specific embodiment and by reference to the accompanying drawings, the present invention is further detailed explanation:
Fig. 1 is the structure iron of optical fiber of the present invention;
1-secondary coating; 2-Primary coating layer; 3-hole; 4-fibre core.
Embodiment
Embodiment 1: as shown in Figure 1, this optical fiber comprises fibre core 4 and covering, described fibre core 4 is made up of fibre core 4 doping of two kinds of different refractivities, described covering is around described fibre core 4 in the outside of fibre core 4, described covering comprises the Primary coating layer 2 and secondary coating 1 that are formed by ultraviolet curing resin, and the polymeric polyisocyanate composition that described ultraviolet curing resin contains in urethane acrylate and light-initiated dose and this urethane acrylate is aromatic series class polymeric polyisocyanate; Light-initiated dose in described Primary coating layer comprises 2; 4; 6-trimethylbenzoyldiphenyl oxide compound; in described secondary coating light-initiated dose is 2; 4; the composition of 6-trimethylbenzoyldiphenyl oxide compound and methyl phenyl ketone photoinitiator, and in coating material 1g the molar content of unreacted light-initiated dose less than 2.4 �� 10-3, described methyl phenyl ketone photoinitiator is 1-hydroxycyclohexyl phenyl ketone; Described Primary coating layer 2 has multiple holes 3 that the central shaft along optical fiber extends, the unrelieved stress in interior region inside the circumscribed circle in described hole 3 is stress under compression, described stress under compression is more than 15MPa, with the volumetric molar concentration height of the haloid element being positioned at around interior region of the molar concentration rate covering of the haloid element in the interior region inside the circumscribed circle of hole when 3; In interior region, codoped has chlorine, iodine and fluorine; Wherein a kind of fibre core doped with Ge, another kind of fibre core doped with Al, described aromatic series class polymeric polyisocyanate is tolylene diisocyanate, when by stretching optical fiber prefabricated component manufacture hole help optical fiber time, it is important that in stretch processing, accurately control aperture; In order to control aperture in stretch processing, it is necessary to the internal pressure of stable hole; Also need to perform high tensile to stretch, thus perform stretching when the viscosity of glass is relatively high; But, when performing high tensile and stretch, tensile stress easily remains in core layer, and the tensile stress remained may cause the decrease in intensity of glass and transmission loss is increased.
Above-described specific embodiment; the object of the present invention, technical scheme and useful effect have been further described; it is it should be understood that; the foregoing is only specific embodiments of the invention; it is not limited to the present invention; within the spirit and principles in the present invention all, any amendment of making, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. an optical fiber, comprise fibre core and covering, it is characterized in that, described fibre core is made up of the fibre core doping of two kinds of different refractivities, described covering in the outside of fibre core around described fibre core, described covering comprises the Primary coating layer and secondary coating that are formed by ultraviolet curing resin, and the polymeric polyisocyanate composition that described ultraviolet curing resin contains in urethane acrylate and light-initiated dose and this urethane acrylate is aromatic series class polymeric polyisocyanate; Described Primary coating layer has multiple holes that the central shaft along optical fiber extends, and the unrelieved stress in interior region inside the circumscribed circle in described hole is stress under compression.
2. optical fiber according to claim 1; it is characterized in that; light-initiated dose in described Primary coating layer comprises 2; 4; 6-trimethylbenzoyldiphenyl oxide compound, light-initiated dose in described secondary coating is 2,4; the composition of 6-trimethylbenzoyldiphenyl oxide compound and methyl phenyl ketone photoinitiator, and in coating material 1g the molar content of unreacted light-initiated dose less than 2.4 �� 10-3, described methyl phenyl ketone photoinitiator is 1-hydroxycyclohexyl phenyl ketone.
3. optical fiber according to claim 2, it is characterised in that, described stress under compression is more than 15MPa.
4. optical fiber according to claim 3, it is characterised in that, wherein a kind of fibre core doped with Ge, another kind of fibre core doped with Al.
5. optical fiber according to claim 3 or 4, it is characterised in that, described aromatic series class polymeric polyisocyanate is tolylene diisocyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199577.9A CN105629375A (en) | 2016-04-04 | 2016-04-04 | Optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199577.9A CN105629375A (en) | 2016-04-04 | 2016-04-04 | Optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105629375A true CN105629375A (en) | 2016-06-01 |
Family
ID=56044483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610199577.9A Pending CN105629375A (en) | 2016-04-04 | 2016-04-04 | Optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105629375A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562989A (en) * | 2016-08-02 | 2019-04-02 | 住友电气工业株式会社 | The manufacturing method of optical fiber and optical fiber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010036007A1 (en) * | 1999-05-20 | 2001-11-01 | Sumitomo Electric Industries, Ltd. | Optical fiber for optical amplifier and fiber optic amplifier |
| CN101196593A (en) * | 2006-12-04 | 2008-06-11 | 德雷卡通信技术公司 | Optical fiber |
| CN102354019A (en) * | 2011-11-11 | 2012-02-15 | 烽火通信科技股份有限公司 | Bent non-sensitive micro-structured optical fiber and production method thereof |
| CN101312923B (en) * | 2006-03-23 | 2012-07-04 | 古河电气工业株式会社 | Optical fiber |
| CN102998739A (en) * | 2011-09-14 | 2013-03-27 | 住友电气工业株式会社 | Optical fiber |
-
2016
- 2016-04-04 CN CN201610199577.9A patent/CN105629375A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010036007A1 (en) * | 1999-05-20 | 2001-11-01 | Sumitomo Electric Industries, Ltd. | Optical fiber for optical amplifier and fiber optic amplifier |
| CN101312923B (en) * | 2006-03-23 | 2012-07-04 | 古河电气工业株式会社 | Optical fiber |
| CN101196593A (en) * | 2006-12-04 | 2008-06-11 | 德雷卡通信技术公司 | Optical fiber |
| CN102998739A (en) * | 2011-09-14 | 2013-03-27 | 住友电气工业株式会社 | Optical fiber |
| CN102354019A (en) * | 2011-11-11 | 2012-02-15 | 烽火通信科技股份有限公司 | Bent non-sensitive micro-structured optical fiber and production method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562989A (en) * | 2016-08-02 | 2019-04-02 | 住友电气工业株式会社 | The manufacturing method of optical fiber and optical fiber |
| CN109562989B (en) * | 2016-08-02 | 2021-10-26 | 住友电气工业株式会社 | Optical fiber and method for manufacturing optical fiber |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |
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| RJ01 | Rejection of invention patent application after publication |