CN103630965A - Bending-resistant tapered fiber and method for manufacturing same - Google Patents
Bending-resistant tapered fiber and method for manufacturing same Download PDFInfo
- Publication number
- CN103630965A CN103630965A CN201310641596.9A CN201310641596A CN103630965A CN 103630965 A CN103630965 A CN 103630965A CN 201310641596 A CN201310641596 A CN 201310641596A CN 103630965 A CN103630965 A CN 103630965A
- Authority
- CN
- China
- Prior art keywords
- bending
- tapered fiber
- covering
- perfluoroethane
- cladding
- 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.)
- Granted
Links
Images
Landscapes
- Glass Compositions (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention discloses a bending-resistant tapered fiber and a method for manufacturing the same, and relates to the field of fibers. A bare fiber of the bending-resistant tapered fiber sequentially comprises a core layer, inner cladding, sunken cladding and outer cladding from the inside to the outside, the outer cladding is quartz cladding, refractive indexes of the core layer, the inner cladding and the sunken cladding are sequentially reduced, and relative refractive index difference of the core layer relative to the outer cladding ranges from 0.85% to 0.95%; relative refractive index difference of the inner cladding relative to the outer cladding ranges from 0.10% to 0.20%; the relative refractive index difference of the sunken cladding relative to the outer cladding ranges from -0.15% to -0.25%. The method includes sequentially depositing the sunken cladding, the inner cladding and the core layer in a quartz reaction tube by an improved chemical vapor deposition technology when the bending-resistant tapered fiber is manufactured. Deposition raw materials include silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride and hexafluoroethane. The bending-resistant tapered fiber and the method have the advantages that the bending-resistant performance of the bending-resistant tapered fiber can be improved on the premise that the tapered performance of the bending-resistant tapered fiber is unaffected, and accordingly application requirements of minimization of C+L waveband fiber couplers on the bending-resistant tapered fiber can be assuredly met.
Description
Technical field
The present invention relates to field fiber, is specifically a kind of counter-bending tapered fiber and manufacture method thereof.
Background technology
Along with the high speed development of optical communication technique, increasing optical device is widely used in optical communication network, comprises the fiber coupler of a large amount of uses of all kinds.
The production method of traditional fiber coupling mechanism is fused biconical taper method, and the method is simple, is suitable for large-scale production.But the general volume of the fiber coupler of manufacturing under these process conditions is larger, and conventional tapered fiber does not possess bending resistance, when bending radius is less than certain numerical value, its addition bend loss meeting sharply increases, and therefore when tail optical fiber encapsulates, should be noted that the bending radius of tail optical fiber.Encapsulation radius is too small, not only can increase the bending loss of optical fiber, brings extra added losses, and too small fiber bending radius also can affect the mechanical property of optical fiber simultaneously, easily causes shortening of optical fibre device mission life.Along with optical device is to miniaturization, the development of integrated direction, the miniaturization of fiber coupler is just very important.
Conventional counter-bending optical fiber, is mainly used in LAN (Local Area Network) or Access Network at present, and its bending property can reach when bending radius 5mm, and the addition bend loss of 1550nm wavelength is less than 0.1dB.But because its material component of counter-bending optical fiber of routine is mainly Si-Ge-F, cannot meet existing requirement of drawing cone technique; In addition, the cutoff wavelength of conventional counter-bending optical fiber generally, more than 1200nm, cannot meet the requirement of 980nm wavelength pump light transmission, also cannot meet the application requirements in the fiber coupler miniaturization of C+L wave band.
Summary of the invention
For the defect existing in prior art, the object of the present invention is to provide a kind of counter-bending tapered fiber and manufacture method thereof, not affecting under the prerequisite of drawing cone performance, promote the bending resistance of optical fiber, guarantee its application requirements in the fiber coupler miniaturization of C+L wave band.
For reaching above object, the invention provides a kind of counter-bending tapered fiber, its bare fibre comprises sandwich layer, inner cladding from the inside to the outside successively, covering and surrounding layer sink, described surrounding layer is quartzy covering, the refractive index of described sandwich layer, inner cladding, the covering that sink reduces successively, and the refractive index contrast of the relative surrounding layer of sandwich layer is 0.85～0.95%; The refractive index contrast of the relative surrounding layer of inner cladding is 0.10～0.20%; The refractive index contrast of the sagging relative surrounding layer of covering is-0.15～-0.25%.
On the basis of technique scheme, the diameter of described sandwich layer is 3.0～3.5 μ m, and the diameter of inner cladding is 9.0～10.5 μ m, and the diameter of the covering that sink is 12.0～14.0 μ m, and the diameter of surrounding layer is 124.5～125.5 μ m.
On the basis of technique scheme, the cutoff wavelength of described counter-bending tapered fiber is less than 980nm, 980nm wavelength mode field diameter 3.5～4.5 μ m, 1550nm wavelength mode field diameter 5.5～6.5 μ m.
The present invention also provides a kind of manufacture method of counter-bending tapered fiber, comprise step: utilize modified chemical vapor deposition process (MCVD) technique, in crystal reaction tube, deposit successively sink covering, inner cladding and sandwich layer, deposition raw material is silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane; Post-depositional crystal reaction tube is melted and shortens solid plug at 1750 ℃ of temperature; Prepare surrounding layer, described plug is formed to preform; Described preform is fixed on wire-drawer-tower, at 2200 ℃ of temperature, is drawn into optical fiber.
On the basis of technique scheme, first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 76.5:8.5:15; Sedimentary inner envoloping layer again, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 70:15:14:1; Finally deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 43.5:51.5:5.
On the basis of technique scheme, first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 80:6:14; Sedimentary inner envoloping layer again, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 65:15:15:5; Finally deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 40:55:5.
On the basis of technique scheme, first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 80:10:10; Sedimentary inner envoloping layer again, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 70:10.5:14.5:5; Finally deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 45:54:1.
Beneficial effect of the present invention is: the present invention utilizes modified chemical vapor deposition process (MCVD) technique (MCVD), and fiber optic materials component is optimized, when guaranteeing that it has and well draw cone performance, owing to possessing the surrounding layer with certain index, 980nm/1550nm Dual-window draws cone isolation to be all greater than 30dB, fully promotes the counter-bending ability of optical fiber.At the bending radius 10mm of optical fiber, during crooked 5 circle, the loss of 1550nm wavelength addition bend is less than 0.05dB, and the bending resistance of optical fiber meets the technological requirement of C+L wave band fiber coupler miniaturization.
Accompanying drawing explanation
Fig. 1 is the bare fibre cross sectional representation of the counter-bending tapered fiber of the present invention;
Fig. 2 is the refractive index profile schematic diagram of plug of the present invention.
Reference numeral: sandwich layer 11, inner cladding 12, the covering 13 that sink, surrounding layer 14.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of counter-bending tapered fiber, its bare fibre comprises sandwich layer 11, inner cladding 12 from the inside to the outside successively, covering 13 and surrounding layer 14 sink.The refractive index of described sandwich layer 11, inner cladding 12, the covering 13 that sink reduces successively, and surrounding layer 14 is quartzy covering.The refractive index contrast Δ n of described sandwich layer 11 relative surrounding layers 14
1be 0.85～0.95%, the refractive index contrast Δ n of inner cladding 12 relative surrounding layers 14
2be 0.10～0.20%, the refractive index contrast of the covering 13 relative surrounding layers 14 that sink is Δ n
3for-0.15～-0.25%.The diameter of described sandwich layer 11 (2a in Fig. 2) is 3.0～3.5 μ m, the diameter of inner cladding 12 (2b in Fig. 2) is 9.0～10.5 μ m, the diameter (2c in Fig. 2) of sagging covering 13 is 12.0～14.0 μ m, and the diameter (not shown) of surrounding layer 14 is 124.5～125.5 μ m.The cutoff wavelength of described counter-bending tapered fiber is less than 980nm, 980nm wavelength mode field diameter 3.5～4.5 μ m, 1550nm wavelength mode field diameter 5.5～6.5 μ m.Optical fiber is at bending radius 10mm, and during crooked 5 circle, the loss of 1550nm wavelength addition bend is less than 0.05dB.
The manufacture method of the counter-bending tapered fiber of the present invention, comprises step:
Utilize modified chemical vapor deposition process (MCVD) technique (MCVD), deposit successively sink covering, inner cladding and sandwich layer in crystal reaction tube, deposition raw material is silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane; The flow proportional that can respectively deposit by adjusting raw material is controlled the refractive index height of sagging covering, inner cladding and sandwich layer.
Utilize oxyhydrogen flame as thermal source, post-depositional crystal reaction tube is melted and shortens solid plug at 1750 ℃ of temperature; Use tiretube process (RIT) or over cladding process to prepare surrounding layer, described plug is formed to preform; Described preform is fixed on wire-drawer-tower, at 2200 ℃ of temperature, is drawn into optical fiber.
Below by specific embodiment, the present invention is described in detail.
Embodiment 1:
Counter-bending tapered fiber in the present embodiment, its bare fibre comprises sandwich layer 11, inner cladding 12 from the inside to the outside successively, covering 13 and surrounding layer 14 sink.The refractive index contrast Δ n of described sandwich layer 11 relative surrounding layers 14
1be 0.85%, the refractive index contrast Δ n of inner cladding 12 relative surrounding layers 14
2be 0.20%, the refractive index contrast of the covering 13 relative surrounding layers 14 that sink is Δ n
3for-0.25%.The diameter of sandwich layer 11 is 3.25 μ m, and the diameter of inner cladding 12 is 9.84 μ m, and the diameter of the covering 13 that sink is 13.02 μ m, and the diameter of surrounding layer 14 is 124.81 μ m.
In the present embodiment, the manufacture method of counter-bending tapered fiber is as follows:
S101. utilize modified chemical vapor deposition process (MCVD) technique (MCVD), first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 76.5:8.5:15.
S102. after the covering that sink has deposited, start sedimentary inner envoloping layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 70:15:14:1.
S103. after inner cladding has deposited, start to deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 43.5:51.5:5.
S104. utilize oxyhydrogen flame as thermal source, post-depositional crystal reaction tube is melted and shortens solid plug at 1750 ℃ of temperature.
S105. use tiretube process (RIT) or over cladding process to prepare surrounding layer, described plug is formed to preform; Described preform is fixed on wire-drawer-tower, at 2200 ℃ of temperature, is drawn into optical fiber.
Use optical fibre all-purpose tester PK2200 test, cutoff wavelength is 945.5nm, 980nm wavelength mode field diameter 4.45 μ m, 1550nm wavelength mode field diameter 6.48 μ m.At bending radius 10mm, during crooked 5 circle, 1550nm wavelength addition bend loss 0.026dB.
Embodiment 2:
Counter-bending tapered fiber in the present embodiment, its bare fibre comprises sandwich layer 11, inner cladding 12 from the inside to the outside successively, covering 13 and surrounding layer 14 sink.The refractive index contrast Δ n of described sandwich layer 11 relative surrounding layers 14
1be 0.91%, the refractive index contrast Δ n of inner cladding 12 relative surrounding layers 14
2be 0.16%, the refractive index contrast of the covering 13 relative surrounding layers 14 that sink is Δ n
3for-0.21%.The diameter of sandwich layer 11 is 3.08 μ m, and the diameter of inner cladding 12 is 9.15 μ m, and the diameter of the covering 13 that sink is 12.24 μ m, and the diameter of surrounding layer 14 is 124.91 μ m.
In the present embodiment, the manufacture method of counter-bending tapered fiber is as follows:
S201. utilize modified chemical vapor deposition process (MCVD) technique (MCVD), first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 80:6:14.
S202. after the covering that sink has deposited, start sedimentary inner envoloping layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 65:15:15:5.
S203. after inner cladding has deposited, start to deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 40:55:5.
S204. utilize oxyhydrogen flame as thermal source, post-depositional crystal reaction tube is melted and shortens solid plug at 1750 ℃ of temperature.
S205. use tiretube process (RIT) or over cladding process to prepare surrounding layer, described plug is formed to preform; Described preform is fixed on wire-drawer-tower, at 2200 ℃ of temperature, is drawn into optical fiber.
Use optical fibre all-purpose tester PK2200 test, cutoff wavelength is 941.6nm, 980nm wavelength mode field diameter 4.05 μ m, 1550nm wavelength mode field diameter 6.26 μ m.At bending radius 10mm, during crooked 5 circle, 1550nm wavelength addition bend loss 0.018dB.
Embodiment 3:
Counter-bending tapered fiber in the present embodiment, its bare fibre comprises sandwich layer 11, inner cladding 12 from the inside to the outside successively, covering 13 and surrounding layer 14 sink.The refractive index contrast Δ n of described sandwich layer 11 relative surrounding layers 14
1be 0.95%, the refractive index contrast Δ n of inner cladding 12 relative surrounding layers 14
2be 0.10%, the refractive index contrast of the covering 13 relative surrounding layers 14 that sink is Δ n
3for-0.15%.The diameter of sandwich layer 11 is 3.40 μ m, and the diameter of inner cladding 12 is 10.2, and the diameter of the covering 13 that sink is 3.8 μ m, and the diameter of surrounding layer 14 is 125.08 μ m.
In the present embodiment, the manufacture method of counter-bending tapered fiber is as follows:
S301. utilize modified chemical vapor deposition process (MCVD) technique (MCVD), first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 80:10:10.
S302. after the covering that sink has deposited, start sedimentary inner envoloping layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 70:10.5:14.5:5.
S303. after inner cladding has deposited, start to deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 45:54:1.
S304. utilize oxyhydrogen flame as thermal source, post-depositional crystal reaction tube is melted and shortens solid plug at 1750 ℃ of temperature.
S305. use tiretube process (RIT) or over cladding process to prepare surrounding layer, described plug is formed to preform; Described preform is fixed on wire-drawer-tower, at 2200 ℃ of temperature, is drawn into optical fiber.
Use optical fibre all-purpose tester PK2200 test, cutoff wavelength is 948.5nm, 980nm wavelength mode field diameter 3.51 μ m, 1550nm wavelength mode field diameter 5.52 μ m.At bending radius 10mm, during crooked 5 circle, 1550nm wavelength addition bend loss 0.012dB.
The present invention is not limited to above-mentioned embodiment, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, within these improvements and modifications are also considered as protection scope of the present invention.The content not being described in detail in this instructions belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. a counter-bending tapered fiber, its bare fibre comprises sandwich layer, inner cladding from the inside to the outside successively, covering and surrounding layer sink, described surrounding layer is quartzy covering, it is characterized in that: the refractive index of described sandwich layer, inner cladding, the covering that sink reduces successively, and the refractive index contrast of the relative surrounding layer of sandwich layer is 0.85～0.95%; The refractive index contrast of the relative surrounding layer of inner cladding is 0.10～0.20%; The refractive index contrast of the sagging relative surrounding layer of covering is-0.15～-0.25%.
2. counter-bending tapered fiber as claimed in claim 1, it is characterized in that: the diameter of described sandwich layer is 3.0～3.5 μ m, the diameter of inner cladding is 9.0～10.5 μ m, and the diameter of the covering that sink is 12.0～14.0 μ m, and the diameter of surrounding layer is 124.5～125.5 μ m.
3. counter-bending tapered fiber as claimed in claim 1, is characterized in that: the cutoff wavelength of described counter-bending tapered fiber is less than 980nm, 980nm wavelength mode field diameter 3.5～4.5 μ m, 1550nm wavelength mode field diameter 5.5～6.5 μ m.
4. the manufacture method based on counter-bending tapered fiber claimed in claim 1, is characterized in that, comprises step:
Utilize modified chemical vapor deposition process (MCVD) technique, deposit successively sink covering, inner cladding and sandwich layer in crystal reaction tube, deposition raw material is silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane;
Post-depositional crystal reaction tube is melted and shortens solid plug at 1750 ℃ of temperature; Prepare surrounding layer, described plug is formed to preform; Described preform is fixed on wire-drawer-tower, at 2200 ℃ of temperature, is drawn into optical fiber.
5. the manufacture method of counter-bending tapered fiber as claimed in claim 4, is characterized in that: first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 76.5:8.5:15; Sedimentary inner envoloping layer again, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 70:15:14:1; Finally deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 43.5:51.5:5.
6. the manufacture method of counter-bending tapered fiber as claimed in claim 4, is characterized in that: first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 80:6:14; Sedimentary inner envoloping layer again, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 65:15:15:5; Finally deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 40:55:5.
7. the manufacture method of counter-bending tapered fiber as claimed in claim 4, is characterized in that: first in crystal reaction tube, deposit the covering that sink, the molar percentage of controlling silicon tetrachloride, phosphorus oxychloride, perfluoroethane is 80:10:10; Sedimentary inner envoloping layer again, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, phosphorus oxychloride, perfluoroethane is 70:10.5:14.5:5; Finally deposit sandwich layer, the molar percentage of controlling silicon tetrachloride, germanium tetrachloride, perfluoroethane is 45:54:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641596.9A CN103630965B (en) | 2013-12-03 | 2013-12-03 | Bending-resistant tapered fiber and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641596.9A CN103630965B (en) | 2013-12-03 | 2013-12-03 | Bending-resistant tapered fiber and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103630965A true CN103630965A (en) | 2014-03-12 |
| CN103630965B CN103630965B (en) | 2015-06-24 |
Family
ID=50212206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310641596.9A Active CN103630965B (en) | 2013-12-03 | 2013-12-03 | Bending-resistant tapered fiber and method for manufacturing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103630965B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003614A (en) * | 2014-05-09 | 2014-08-27 | 烽火通信科技股份有限公司 | OAM transmission fiber and manufacturing method thereof |
| CN108519640A (en) * | 2018-06-08 | 2018-09-11 | 成都富通光通信技术有限公司 | A kind of more covering bending loss insensitive single-mode fibers |
| CN110346864A (en) * | 2019-06-04 | 2019-10-18 | 烽火通信科技股份有限公司 | A kind of multicore less fundamental mode optical fibre and its manufacturing method |
| CN110510864A (en) * | 2019-09-11 | 2019-11-29 | 烽火通信科技股份有限公司 | The preparation method and preform of highly doped rare-earth-doped fiber precast rod |
| CN115124231A (en) * | 2022-06-28 | 2022-09-30 | 华能(泰安)光电科技有限公司 | Air-clad anti-bending multi-core optical fiber and manufacturing method thereof |
| CN116119918A (en) * | 2022-12-07 | 2023-05-16 | 中国电子科技集团公司第四十六研究所 | Germanium-doped core rod with graded fluorine and phosphorus element content in isolation layer and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7680381B1 (en) * | 2008-11-25 | 2010-03-16 | Corning Incorporated | Bend insensitive optical fibers |
| CN102156323A (en) * | 2011-05-05 | 2011-08-17 | 长飞光纤光缆有限公司 | Single mode fiber |
| CN101634728B (en) * | 2009-08-18 | 2011-10-19 | 长飞光纤光缆有限公司 | Anti-bending multimode fiber and manufacturing method thereof |
| CN102540327A (en) * | 2012-01-10 | 2012-07-04 | 长飞光纤光缆有限公司 | Bent insensitive single-mode optical fiber |
| CN102539015A (en) * | 2012-02-15 | 2012-07-04 | 长飞光纤光缆有限公司 | Distributed temperature sensing optical fiber |
-
2013
- 2013-12-03 CN CN201310641596.9A patent/CN103630965B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7680381B1 (en) * | 2008-11-25 | 2010-03-16 | Corning Incorporated | Bend insensitive optical fibers |
| CN101634728B (en) * | 2009-08-18 | 2011-10-19 | 长飞光纤光缆有限公司 | Anti-bending multimode fiber and manufacturing method thereof |
| CN102156323A (en) * | 2011-05-05 | 2011-08-17 | 长飞光纤光缆有限公司 | Single mode fiber |
| CN102540327A (en) * | 2012-01-10 | 2012-07-04 | 长飞光纤光缆有限公司 | Bent insensitive single-mode optical fiber |
| CN102539015A (en) * | 2012-02-15 | 2012-07-04 | 长飞光纤光缆有限公司 | Distributed temperature sensing optical fiber |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003614A (en) * | 2014-05-09 | 2014-08-27 | 烽火通信科技股份有限公司 | OAM transmission fiber and manufacturing method thereof |
| CN104003614B (en) * | 2014-05-09 | 2016-08-17 | 烽火通信科技股份有限公司 | A kind of OAM Transmission Fibers and manufacture method thereof |
| CN108519640A (en) * | 2018-06-08 | 2018-09-11 | 成都富通光通信技术有限公司 | A kind of more covering bending loss insensitive single-mode fibers |
| CN110346864A (en) * | 2019-06-04 | 2019-10-18 | 烽火通信科技股份有限公司 | A kind of multicore less fundamental mode optical fibre and its manufacturing method |
| CN110346864B (en) * | 2019-06-04 | 2020-10-27 | 烽火通信科技股份有限公司 | Multi-core few-mode optical fiber and manufacturing method thereof |
| WO2020244034A1 (en) * | 2019-06-04 | 2020-12-10 | 烽火通信科技股份有限公司 | Multi-core few-mode optical fiber and manufacture method therefor |
| CN110510864A (en) * | 2019-09-11 | 2019-11-29 | 烽火通信科技股份有限公司 | The preparation method and preform of highly doped rare-earth-doped fiber precast rod |
| CN115124231A (en) * | 2022-06-28 | 2022-09-30 | 华能(泰安)光电科技有限公司 | Air-clad anti-bending multi-core optical fiber and manufacturing method thereof |
| CN115124231B (en) * | 2022-06-28 | 2023-11-24 | 华能(泰安)光电科技有限公司 | Air-clad anti-bending multi-core optical fiber and manufacturing method thereof |
| CN116119918A (en) * | 2022-12-07 | 2023-05-16 | 中国电子科技集团公司第四十六研究所 | Germanium-doped core rod with graded fluorine and phosphorus element content in isolation layer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103630965B (en) | 2015-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103630965B (en) | Bending-resistant tapered fiber and method for manufacturing same | |
| CN101738681B (en) | High bandwidth multimode fiber | |
| JP5687355B2 (en) | Multimode optical fiber with bending resistance, large core diameter and high numerical aperture | |
| CN101891380B (en) | Manufacturing method of large-size optical fiber preform | |
| RU2489741C2 (en) | Multi-core fibre-optic guide (versions) | |
| CN102354019B (en) | Bent non-sensitive micro-structured optical fiber and production method thereof | |
| CN106443876B (en) | A kind of low crosstalk less fundamental mode optical fibre | |
| CN103018821B (en) | Polarization maintaining optical fiber with small bending radius and manufacture method of polarization maintaining optical fiber | |
| CN103282809A (en) | Multi-core optical fiber ribbons and methods for making the same | |
| CN102692675A (en) | Gradual refractive index bending resistant multimode optical fiber | |
| CN104291676B (en) | A kind of manufacture method of large scale bend-insensitive multimode optical fiber preform | |
| CN102998742B (en) | Anti-bending single mode fiber with small mode field | |
| CN102225843B (en) | Method for producing fiber prefabricated rod | |
| CN111807699A (en) | Manufacturing method of bending-resistant optical fiber and optical fiber corresponding to manufacturing method | |
| CN103399376B (en) | A kind of bend-insensitive single-mode optical fiber and manufacture method thereof | |
| CN103364870B (en) | A kind of single-mode fiber and manufacture method thereof | |
| CN104316993B (en) | A kind of big core diameter energy-transmission optic fibre | |
| EP3918388A1 (en) | Method for manufacturing an optical fibre and the optical fibre thereof | |
| CN106338793A (en) | Few-mode fiber | |
| CN104261670A (en) | Method for manufacturing optical fiber | |
| CN105785510A (en) | Tapering method-based optical fiber coupler and manufacturing method thereof | |
| CN103246010B (en) | A kind of optical fiber with multiple refractive index | |
| CN103033874A (en) | Bend-insensitive single mode fiber and preparation method thereof | |
| CN107179580B (en) | Side-coupled optical fiber for stripping high-power cladding light and preparation method thereof | |
| CN106154410A (en) | A kind of single-mode fiber and manufacture method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |