公开(公告)号：US4915717A

公开(公告)日：1990-04-10

申请号：US577405

申请日：1984-02-06

申请人： Minoru Watanabe ,  Naoki Yoshioka ,  Hiroo Kanamori ,  Nobuo Inagaki

发明人： Minoru Watanabe ,  Naoki Yoshioka ,  Hiroo Kanamori ,  Nobuo Inagaki

IPC分类号： C03B37/014

CPC分类号： C03B37/0142 ,  C03B2207/04 ,  C03B2207/10 ,  C03B2207/16 ,  C03B2207/20 ,  C03B2207/22 ,  C03B2207/26 ,  C03B2207/36 ,  C03B2207/50

摘要： An improved method for fabricating an optical fiber preform by the vapor phase axial deposition (VAD) method, comprises forming core and cladding soots at the same time by the use of core and cladding burners. The improvement is that the cladding burner is designed so that at least one of the outlets for a feed material gas, a fuel gas, an auxiliary fuel gas, and an inert gas is composed of a plurality of openings. In this improved method, the temperature distribution from the boundary of the core soot to the periphery of the cladding soot is made smooth, and thus the cladding soot is prevented from cracking.

摘要翻译： 通过气相轴向沉积（VAD）方法制造光纤预制件的改进方法包括通过使用芯和包层燃烧器同时形成芯和包覆烟灰。 改进之处在于，包层燃烧器被设计成使得用于进料材料气体，燃料气体，辅助燃料气体和惰性气体的出口中的至少一个由多个开口组成。 在这种改进的方法中，从核心烟灰的边界到包层烟灰的周边的温度分布变得平滑，因此防止了包层烟灰的破裂。

公开(公告)号：US4812155A

公开(公告)日：1989-03-14

申请号：US132655

申请日：1987-12-10

申请人： Michihisa Kyoto ,  Naoki Yoshioka ,  Gotaro Tanaka ,  Hiroo Kanamori ,  Minoru Watanabe ,  Motohiro Nakahara

发明人： Michihisa Kyoto ,  Naoki Yoshioka ,  Gotaro Tanaka ,  Hiroo Kanamori ,  Minoru Watanabe ,  Motohiro Nakahara

IPC分类号： C03B37/014 ,  C03B37/018

CPC分类号： C03B37/01446 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/42 ,  C03B2203/22 ,  Y10S65/16

摘要： A method for producing a glass preform for optical fibers in which fluorine is efficiently incorporated into the preform without incorporation of Fe or Cu. A fine glass particle mass, made primarily of quartz, is converted into transparent glass by heating it in a gas atmosphere containing at least a fluorine-based compound gas and a chlorine-based compound gas. The preferred heating range is 1,100.degree. to 1,400.degree. C.

摘要翻译： 一种用于制造光纤的玻璃预制棒的方法，其中氟被有效地结合到预成型体中而不引入Fe或Cu。 主要由石英制成的微细玻璃颗粒物质通过在至少含有氟基化合物气体和氯基化合物气体的气体气氛中加热而转化为透明玻璃。 优选的加热范围为1100至1400℃。

公开(公告)号：US4880452A

公开(公告)日：1989-11-14

申请号：US289444

申请日：1988-12-22

申请人： Hiroo Kanamori ,  Gotaro Tanaka ,  Michihisa Kyoto ,  Naoki Yoshioka ,  Futoshi Mizutani

发明人： Hiroo Kanamori ,  Gotaro Tanaka ,  Michihisa Kyoto ,  Naoki Yoshioka ,  Futoshi Mizutani

IPC分类号： B65G47/90 ,  B23Q7/04 ,  B25J5/02 ,  B25J19/00 ,  B66C1/22 ,  B66C1/24 ,  B66C11/02 ,  B66C11/04 ,  B66C11/06 ,  B66C13/12 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/00

CPC分类号： C03B37/01446 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16

摘要： A method for producing a glass preform for an optical fiber comprising a core and a cladding containing fluorine is fisclosed. The method comprises forming a porous glass layer of substantially pure quartz on an outer surface of a fused glass rod consisting of a central portion of substantially pure quartz and a peripheral portion of quartz glass containing fluorine, and heating a composite of the fused glass rod and the porous glass layer in an atmosphere containing fluorine to add fluorine to the porous glass layer and to make it transparent, by which contamination of glass with hydroxyl groups can be prevented and light transmission characteristics of an optical fiber fabricated from the glass preform are improved.

摘要翻译： 公开了一种用于生产包含芯和包含氟的包层的光纤玻璃预制棒的方法。 该方法包括在由基本上纯的石英的中心部分和含氟的石英玻璃的周边部分组成的熔融玻璃棒的外表面上形成基本上纯的石英的多孔玻璃层，并加热熔融的玻璃棒和 在含氟的气氛中的多孔玻璃层，向多孔玻璃层中添加氟并使其透明化，由此可以防止由羟基引起的玻璃的污染，并提高由玻璃预制件制造的光纤的透光特性。

公开(公告)号：US4675040A

公开(公告)日：1987-06-23

申请号：US722384

申请日：1985-04-12

申请人： Gotaro Tanaka ,  Futoshi Mizutani ,  Naoki Yoshioka ,  Hiroo Kanamori

发明人： Gotaro Tanaka ,  Futoshi Mizutani ,  Naoki Yoshioka ,  Hiroo Kanamori

IPC分类号： C03B37/14 ,  C03B37/012 ,  C03B37/014 ,  G02B6/00 ,  C03B37/018

CPC分类号： C03B37/01446 ,  C03B37/014 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16

摘要： A method for producing a glass preform for a single mode optical fiber comprising a core and a cladding, which method comprises depositing fine glass particle of a glass raw material on a periphery of a cylindrical seed member having a smooth and clean outer surface by flame hydrolysis to form a soot of the fine glass material, pulling out the seed member from the soot, inserting a core glass rod in a hollow portion of the soot and dehydrating and sintering a complex of a core rod and a cladding to produce a glass preform from which a single mode optical fiber having low attenuation of light transmission, particularly due to absorption by hydroxyl groups can be drawn.

摘要翻译： 一种用于制造用于单模光纤的玻璃预制棒的方法，其包括芯和包层，该方法包括通过火焰水解在玻璃原料的周围沉积具有光滑且干净的外表面的圆柱形种子构件的细微玻璃颗粒 为了形成微细玻璃材料的烟灰，从烟灰中拉出种子构件，将核心玻璃棒插入烟灰的中空部分中，并且将芯棒和包层的复合物脱水和烧结以产生玻璃预制件 可以描绘出具有低透光率的单模光纤，特别是由于羟基的吸收。

公开(公告)号：US5221309A

公开(公告)日：1993-06-22

申请号：US938502

申请日：1992-08-31

申请人： Michihisa Kyoto ,  Minoru Watanabe ,  Hiroo Kanamori

发明人： Michihisa Kyoto ,  Minoru Watanabe ,  Hiroo Kanamori

IPC分类号： C03B37/014

CPC分类号： C03B37/0146 ,  C03B37/01446 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16 ,  Y10S65/90

摘要： A method for producing a glass preform, which method comprises forming a soot preform of glass fine particles comprising SiO.sub.2 by flame hydrolysis or solution hydrolysis of a starting glass material and sintering the soot preform in an atmosphere containing at least SiF.sub.4 to obtain a glass preform which is free from an increase in absorption due to impurities and has sufficiently low attenuation of light transmission.

摘要翻译： 一种制造玻璃预成型体的方法，该方法包括通过火焰水解或起始玻璃材料的溶液水解形成包含SiO 2的玻璃微粒的烟灰预制件，并在至少包含SiF 4的气氛中烧结烟灰预制件以获得玻璃预制件， 没有由杂质引起的吸收增加，并且具有足够低的透光衰减。

公开(公告)号：US4979971A

公开(公告)日：1990-12-25

申请号：US472446

申请日：1990-01-29

申请人： Michihisa Kyoto ,  Minoru Watanabe ,  Hiroo Kanamori

发明人： Michihisa Kyoto ,  Minoru Watanabe ,  Hiroo Kanamori

IPC分类号： C01B33/107 ,  C03B37/014 ,  C03C13/04 ,  G02B6/00

CPC分类号： C03B37/0146 ,  C03B37/01446 ,  C03B37/01453 ,  C03B2201/12 ,  C03B2203/22 ,  Y10S65/16 ,  Y10S65/90

摘要： A method for producing a glass preform for an optical fiber is disclosed. The method comprises forming a soot preform of glass fine particles comprising SiO.sub.2 by flame hydrolysis or solution hydrolysis of a starting glass material and sintering the soot preform in an atmosphere containing at least SiF.sub.4 to obtain a glass preform which is free from an increase in absorption due to impurities and has sufficiently low attenuation of light transmission.

摘要翻译： 公开了一种用于生产用于光纤的玻璃预制棒的方法。 该方法包括通过火焰水解或起始玻璃材料的溶液水解形成包含SiO 2的玻璃细颗粒的烟灰预制件，并在至少包含SiF 4的气氛中烧结烟灰预制件以获得玻璃预成型体，其不受吸收增加的影响 并且具有足够低的光透射衰减。

公开(公告)号：US5377294A

公开(公告)日：1994-12-27

申请号：US77935

申请日：1993-06-18

申请人： Masahi Onishi ,  Koji Nakazato ,  Hiroo Kanamori ,  Minoru Watanabe ,  Yoshiaki Miyajima

发明人： Masahi Onishi ,  Koji Nakazato ,  Hiroo Kanamori ,  Minoru Watanabe ,  Yoshiaki Miyajima

IPC分类号： G02B6/00 ,  C03C3/32 ,  C03C4/00 ,  G02F1/35 ,  G02F1/355 ,  H01S3/06 ,  H01S3/063 ,  H01S3/067 ,  H01S3/07 ,  H01S3/0915 ,  H01S3/16 ,  H01S3/17

CPC分类号： H01S3/06716 ,  C03C3/325 ,  C03C4/0071 ,  H01S3/06754 ,  H01S2302/00 ,  H01S2303/00 ,  H01S3/1611 ,  H01S3/1691 ,  H01S3/173

摘要： An optical functioning glass for enabling optical amplification at 1.3-.mu.m wavelength band or increasing efficiency of the amplification is disclosed. The optical functioning glass contains Nd.sup.3+ as an active material and uranium, both of which are doped in a multi-component function glass serving as a host glass. Since uranium is doped in the optical functioning glass, light emission of Nd.sup.3+ in the 1.06-.mu.m wavelength band can be absorbed by uranium. A decrease in efficiency of induced emission in a 1.3-.mu.m wavelength band can be prevented, and an optical functioning glass suitable for optical amplification in the 1.3-.mu.m wavelength band can be obtained. When a fiber is formed using the optical functioning glass as a core, a low-threshold, high-gain fiber amplifier, fiber laser, and the like can be obtained.

摘要翻译： 公开了一种用于使得在1.3μm波长带上进行光学放大或增加放大效率的光学功能玻璃。 光学功能玻璃含有作为活性物质的Nd 3+和铀，两者均掺杂在作为主体玻璃的多组分功能玻璃中。 由于铀在光学功能玻璃中被掺杂，所以在1.06μm波段中的Nd 3+的发光可被铀吸收。 可以防止在1.3μm波长带中的感应发射效率的降低，并且可以获得适用于1.3μm波段的光放大的光功能玻璃。 当使用光学功能玻璃作为核心形成光纤时，可以获得低阈值，高增益光纤放大器，光纤激光器等。

公开(公告)号：US5244846A

公开(公告)日：1993-09-14

申请号：US829477

申请日：1992-02-03

申请人： Masashi Onishi ,  Koji Nakazato ,  Hiroo Kanamori ,  Minoru Watanabe ,  Yoshiaki Miyajima

发明人： Masashi Onishi ,  Koji Nakazato ,  Hiroo Kanamori ,  Minoru Watanabe ,  Yoshiaki Miyajima

IPC分类号： G02B6/00 ,  C03C3/32 ,  C03C4/00 ,  G02F1/35 ,  G02F1/355 ,  H01S3/06 ,  H01S3/063 ,  H01S3/067 ,  H01S3/07 ,  H01S3/0915 ,  H01S3/16 ,  H01S3/17

CPC分类号： H01S3/06716 ,  C03C3/325 ,  C03C4/0071 ,  H01S3/06754 ,  H01S2302/00 ,  H01S2303/00 ,  H01S3/1611 ,  H01S3/1691 ,  H01S3/173

摘要： An optical functioning glass for enabling optical amplification at 1.3-.mu.m wavelength band or increasing efficiency of the amplification is disclosed. The optical functioning glass contains Nd.sup.3+ as an active material and uranium, both of which are doped in a multi-component function glass serving as a host glass. Since uranium is doped in the optical functioning glass, light emission of Nd.sup.3+ in the 1.06-.mu.m wavelength band can be absorbed by uranium. A decrease in efficiency of induced emission in a 1.3-.mu.m wavelength band can be prevented, and an optical functioning glass suitable for optical amplification in the 1.3-.mu.m wavelength band can be obtained. When a fiber is formed using the optical functioning glass as a core, a low-threshold, high-gain fiber amplifier, fiber laser, and the like can be obtained.

公开(公告)号：USRE38086E1

公开(公告)日：2003-04-22

申请号：US09714615

申请日：2000-11-17

申请人： Masashi Onishi ,  Hiroo Kanamori ,  Masayuki Nishimura ,  Tomonori Kashiwada ,  Yasushi Koyano

发明人： Masashi Onishi ,  Hiroo Kanamori ,  Masayuki Nishimura ,  Tomonori Kashiwada ,  Yasushi Koyano

IPC分类号： G02B616

CPC分类号： G02B6/02261 ,  C03B37/014 ,  C03B2203/22 ,  C03B2203/36 ,  G02B6/02004 ,  G02B6/0228 ,  G02B6/02285 ,  G02B6/0281 ,  G02B6/0283 ,  G02B6/0286 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/29377 ,  H01S3/06729 ,  H01S3/302

摘要： The present invention relates to a dispersion compensating fiber for improving a transmission system with it in total chromatic dispersion and dispersion slope in the 1.55 &mgr;m wavelength band. The dispersion compensating fiber according to the present invention is characterized by having the following characteristics for light in the 1.55 &mgr;m wavelength band: chromatic dispersion not less than −40 ps/km/nm and not more than 0 ps/km/nm; dispersion slope not less than −0.5 ps/km/nm2 and not more than −0.1 ps/km/nm2; transmission loss not more than 0.5 dB/km; polarization mode dispersion not more than 0.7 ps.km−½; mode field diameter not less than 4.5 &mgr;m and not more than 6.5 &mgr;m; cut-off wavelength not less than 0.7 &mgr;m and not more than 1.7 &mgr;m in the length of 2 m; and bending loss at the diameter of 20 mm, not more than 100 dB/m. The dispersion compensating fiber is optically connected with a dispersion shifted fiber as a compensated object at a ratio of appropriate lengths, which can improve the system including the dispersion compensating fiber in the total chromatic dispersion and dispersion slope of the system in the 1.55 &mgr;m band.

摘要翻译： 本发明涉及一种用于改善传输系统的色散补偿光纤在1.55μm波长带中的总色散和色散斜率。 根据本发明的色散补偿光纤的特征在于对于1.55μm波长带中的光具有以下特性：色散不小于-40ps / km / nm且不大于0ps / km / nm; 色散斜率不小于-0.5 ps / km / nm2，不大于-0.1 ps / km / nm2; 传输损耗不超过0.5 dB / km; 偏振模色散不大于0.7 ps.km-½; 模场直径不小于4.5μm，不大于6.5μm; 截止波长不小于0.7μm和不大于1.7μm，长度为2μm; 弯曲损耗为20mm，不大于100dB / m。 色散补偿光纤以适当长度的比率与作为补偿对象的色散位移光纤光学连接，这可以改善包括色散补偿光纤在1.55mum带中的系统的总色散和色散斜率的系统。

公开(公告)号：US5746801A

公开(公告)日：1998-05-05

申请号：US785835

申请日：1997-01-15

申请人： Chie Fukuda ,  Masashi Onishi ,  Hiroo Kanamori

发明人： Chie Fukuda ,  Masashi Onishi ,  Hiroo Kanamori

IPC分类号： C03B5/16 ,  C03B5/033 ,  C03B37/012 ,  C03C3/32 ,  C03C13/04 ,  C03B37/00 ,  C03B3/02

CPC分类号： C03B37/01265 ,  C03B5/0334 ,  C03C3/325 ,  C03B2201/82 ,  Y10S65/16

摘要： A process for producing fluoride glass, including the steps of: introducing a raw material for fluoride glass into a heating vessel; and heating the raw material in the heating vessel, while causing the heating vessel to have a negative internal pressure and introducing an inert gas into the heating vessel, thereby to melt the raw material under heating.

摘要翻译： 一种生产氟化物玻璃的方法，包括以下步骤：将氟化玻璃原料引入加热容器; 在加热容器中加热原料，同时使加热容器具有负的内部压力，并将惰性气体引入加热容器中，从而在加热下熔化原料。