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1. 发明公开

EP3372565A1 LARGE-SIZE OPTICAL FIBER PERFORM DEHYDROXYLATION ANNEALING METHOD AND DEVICE 审中-公开
公开(公告)号：EP3372565A1
公开(公告)日：2018-09-12
申请号：EP17859343.0
申请日：2017-11-20
申请人： Futong Group (Jiashan) Communication Technology Co., Ltd.
发明人： DING, Xiong , LIU, Lianyong , WU, Haigang
IPC分类号： C03B25/00
CPC分类号： C03B37/01446 , C03B37/0146
摘要： This invention provides a dehydroxylation annealing method for a large-sized optical fiber preform and a device, wherein the method includes: i) placing the optical fiber preforms in a furnace anneal; ii) heating the optical fiber preforms to a stress removal temperature by raising a temperature four times; iii) preserving the temperature; and iv) reducing the temperature of the optical fiber preforms to a cooling temperature by reducing the temperature four times. This invention heats the preforms to the stress removal temperature by gradually raising the temperature four times which can guarantee a thermal stability of the preforms; heat of the interior of the preforms can be evenly radiated through gradually reducing the temperature four times; and both heating and cooling are performed in a vacuum environment, compared to a non-vacuum environment, the vacuum state is more conducive to a detachment of residual He and hydroxyl in the optical fiber preform, and an effect is better.

2. 发明公开

EP3307684A1 METHOD OF MANUFACTURING PREFORMS FOR OPTICAL FIBRES HAVING LOW ATTENUATION LOSS 审中-公开
标题翻译：制造具有低衰减损失的光纤的预制件的方法
公开(公告)号：EP3307684A1
公开(公告)日：2018-04-18
申请号：EP15729807.6
申请日：2015-06-12
申请人： Prysmian S.p.A.
发明人： COCCHINI, Franco , ADIGRAT, Antonio , CARONNA, Valeria , CAIATA, Marco, Antonio , COLLARO, Antonio , SCHIAFFO, Antonio
IPC分类号： C03B37/014
CPC分类号： C03B37/01446 , C03B37/0124 , C03B37/01473 , C03B37/01493 , C03B2201/31 , C03C13/045
摘要： A method of manufacturing a glass core preform for an optical fibre comprising: providing a porous soot core preform having an outer surface) and a central hole extending axially therethrough; dehydrating the porous soot core preform at a first temperature by exposing the outer surface of the preform to an atmosphere containing chlorine, and simultaneously consolidating the soot core preform and closing the central hole at a second temperature higher than the first temperature to form a glass core preform, wherein consolidating and closing comprises sequentially alternating flowing chlorine containing gas into the central hole and reducing the internal pressure of the central hole.

3. 发明公开

EP3173388A1 METHOD OF MANUFACTURING OPTICAL FIBER PREFORM AND OPTICAL FIBER PREFORM 有权
标题翻译：制造光纤预制棒和光纤预制棒的方法
公开(公告)号：EP3173388A1
公开(公告)日：2017-05-31
申请号：EP15824799.9
申请日：2015-07-21
申请人： Sumitomo Electric Industries, Ltd.
发明人： HARUNA Tetsuya , HIRANO Masaaki , TAMURA Yoshiaki , KAWAGUCHI Yuki
IPC分类号： C03B37/012 , C03B37/014 , C03B37/018 , C03C13/04
CPC分类号： C03B37/01211 , C03B37/01228 , C03B37/01245 , C03B37/01248 , C03B37/01446 , C03B37/018 , C03B37/01807 , C03B37/01869 , C03B37/01892 , C03B2201/075 , C03B2201/12 , C03B2201/20 , C03B2201/50 , C03B2203/22 , C03B2203/29 , C03B2203/34 , C03C3/06 , C03C13/045 , C03C2201/11 , C03C2201/12 , C03C2201/23 , C03C2201/50 , Y02P40/57
摘要： The present invention relates to a method of manufacturing an optical fiber preform for obtaining an optical fiber with low transmission loss. A core preform included in the optical fiber preform comprises three or more core portions, which are each produced by a rod-in-collapse method, and in which both their alkali metal element concentration and chlorine concentration are independently controlled. In two or more manufacturing steps of the manufacturing steps for each of the three or more core portions, an alkali metal element is added. As a result, the mean alkali metal element concentration in the whole core preform is controlled to 7 atomic ppm or more and 70 atomic ppm or less.
摘要翻译：本发明涉及制造用于获得具有低传输损耗的光纤的光纤预制件的方法。包含在光纤预制棒中的纤芯预制棒包括三个或更多个芯部分，每个芯部分都是通过棒内塌缩方法制造的，并且其中它们的碱金属元素浓度和氯浓度都是独立控制的。在三个或更多个芯部中的每一个的制造步骤的两个或更多个制造步骤中，添加碱金属元素。结果，将整个纤芯预制棒中的平均碱金属元素浓度控制在7原子ppm以上且70原子ppm以下。

4. 发明授权

EP2726422B1 METHODS FOR PRODUCING OPTICAL FIBER PREFORMS WITH LOW INDEX TRENCHES 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG VON GLASFASERVORFORMEN MITNIEDRIGINDEXGRÄBEN
公开(公告)号：EP2726422B1
公开(公告)日：2017-02-15
申请号：EP12727759.8
申请日：2012-06-08
申请人： Corning Incorporated
发明人： DAWES, Steven Bruce , KNOWLTON, Robert A , TANDON, Pushkar , WANG, Ji
IPC分类号： C03B37/012 , C03B37/014
CPC分类号： C03B37/01211 , C03B37/01446 , C03B37/01453 , C03B37/01466 , C03B2201/12 , C03B2203/22 , C03B2207/36 , C03B2207/66 , C03B2207/70
摘要： Methods for forming optical fiber preforms with low-index trenches are disclosed. According to one embodiment, the method includes depositing silica-based glass soot on a bait rod to form a low-index trench region of the optical fiber preform. The silica-based glass soot is deposited such that the low-index trench region has a first density. Thereafter a barrier layer having a second density greater than the first density is formed around the low-index trench region. Therafter, an overclad region is deposited around the barrier layer. The bait rod is then removed from a central channel of the trench-overclad assembly. A separate core assembly is inserted into the central channel. A down-dopant gas is then directed through the central channel of the trench-overclad assembly as the trench-overclad assembly is heated to dope the low-index trench region. The barrier layer prevents diffusion of the down-dopant from the low-index trench region into the overclad region.
摘要翻译：公开了用于形成具有低折射率沟槽的光纤预制件的方法。根据一个实施例，该方法包括在诱饵杆上沉积二氧化硅基玻璃烟炱以形成光纤预制棒的低折射率沟槽区域。沉积二氧化硅基玻璃烟炱，使得低折射率沟槽区域具有第一密度。此后，在低折射率沟槽区域周围形成具有大于第一密度的第二密度的阻挡层。 Therafter，一个外包层区域沉积在阻挡层周围。然后将诱饵棒从沟槽外包层组件的中心通道移除。单独的芯组件插入中心通道。然后，随着沟槽外包层组件被加热以掺杂低折射率沟槽区域，下掺杂剂气体被引导通过沟槽外包层组件的中心通道。阻挡层防止下掺杂剂从低折射率沟槽区域扩散到外包层区域中。

5. 发明授权

EP2878583B1 METHOD FOR PRODUCING A SILICA GLASS PREFORM FOR OPTICAL FIBRES 有权
标题翻译：制造方法石英玻璃光纤预制件
公开(公告)号：EP2878583B1
公开(公告)日：2017-01-11
申请号：EP14193027.1
申请日：2014-11-13
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Inoue, Dai , Oyamada, Hiroshi
IPC分类号： C03B37/014 , C03B37/012
CPC分类号： C03B37/01453 , C03B37/01228 , C03B37/0124 , C03B37/01245 , C03B37/01446 , C03B37/01466 , C03B2201/12 , C03B2203/22 , C03B2203/23 , G02B6/0283 , G02B6/0365

6. 发明授权

EP2977359B1 VERFAHREN ZUR HERSTELLUNG VON MIT FLUOR DOTIERTEM QUARZGLAS 有权
标题翻译：用于生产氟掺杂石英玻璃
公开(公告)号：EP2977359B1
公开(公告)日：2016-10-19
申请号：EP14177763.1
申请日：2014-07-21
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Schwerin, Malte , Trommer, Dr. Martin , Zwarg, Steffen
IPC分类号： C03B37/014 , C03B19/14 , C03C3/06
CPC分类号： C03B19/066 , C03B19/1453 , C03B19/1461 , C03B23/045 , C03B23/095 , C03B23/099 , C03B37/01446 , C03B37/01453 , C03B37/0146 , C03B2201/075 , C03B2201/12 , C03B2201/32 , C03B2201/34 , C03B2201/36 , C03B2201/40 , C03B2201/42 , C03C3/06 , C03C13/045 , C03C2201/12 , C03C2201/32 , C03C2201/34 , C03C2201/36 , C03C2201/40 , C03C2201/42 , C03C2203/46

7. 发明公开

EP2551248A3 Methods for manufacturing low water peak optical waveguide 审中-公开
标题翻译：一种用于生产具有低水峰的光波导过程
公开(公告)号：EP2551248A3
公开(公告)日：2014-07-09
申请号：EP12177805.4
申请日：2012-07-25
申请人： Dabby, Franklin W.
发明人： Dabby, Franklin W.
IPC分类号： C03B37/014
CPC分类号： C03B37/01486 , C03B37/014 , C03B37/01413 , C03B37/0142 , C03B37/01446 , C03B37/01493 , C03B2207/50 , C03B2207/64 , C03B2207/66
摘要： Methods are disclosed for manufacturing a cylindrical glass optical waveguide preform having low water content for use in the manufacture of optical waveguide fiber.
The glass optical waveguide preform has a water content sufficiently low such that an optical waveguide fiber producible from the glass optical waveguide preform exhibits an optical attenuation of less than about 0.35 dB/km, and preferably less than about 0.31 dB/km, at a measured wavelength of 1380 nm. Methods are also disclosed for manufacturing glass preforms used in the manufacture of such a glass optical waveguide preform that combine the vapor axial deposition (VAD) and outside vapor deposition (OVD) techniques.

8. 发明授权

EP1875284B1 ALKALI AND FLUORINE DOPED OPTICAL FIBER 有权
标题翻译：碱金属和FLUOR掺杂的光纤
公开(公告)号：EP1875284B1
公开(公告)日：2014-06-18
申请号：EP06720447.9
申请日：2006-02-06
申请人： Corning Incorporated
发明人： MISHRA, Snigdharaj, K.
IPC分类号： G02B6/028 , G02B6/02 , G02B6/036 , C03C3/06
CPC分类号： C03C3/06 , C03B37/01446 , C03B37/01453 , C03B37/01807 , C03B2201/12 , C03B2201/20 , C03B2201/50 , C03B2207/90 , G02B6/02242 , G02B6/0281 , G02B6/0285 , G02B6/0286 , G02B6/03633 , G02B6/0365

10. 发明公开

EP2351715A4 PROCESS FOR PRODUCING OPTICAL-FIBER BASE MATERIAL 有权
标题翻译：工艺生产光学纤维基材
公开(公告)号：EP2351715A4
公开(公告)日：2012-10-03
申请号：EP09812883
申请日：2009-09-09
申请人： SHINETSU CHEMICAL CO
发明人： OTOSAKA TETSUYA
IPC分类号： C03B37/018 , C03B37/012 , C03B37/014
CPC分类号： C03B37/01446 , C03B37/01237 , C03B37/0124 , C03B37/01426 , C03B37/0146 , C03B37/01466 , C03B2201/075 , C03B2201/12 , C03B2201/31 , C03B2203/23 , C03B2203/24 , C03B2203/26 , C03B2207/50

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