公开(公告)号：US06317253B1

公开(公告)日：2001-11-13

申请号：US08871064

申请日：1997-07-09

申请人： Tetsuya Miyazaki ,  Yoshio Karasawa ,  Minoru Yoshida ,  Toshikazu Gozen

发明人： Tetsuya Miyazaki ,  Yoshio Karasawa ,  Minoru Yoshida ,  Toshikazu Gozen

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/1611 ,  H01S3/1693 ,  H01S3/1695 ,  H01S2302/00 ,  H01S2303/00

摘要： In an optical amplifier apparatus for amplifying an incident signal light having wavelengths of 1.06 &mgr;m band, a first optical isolator makes an incident signal light pass therethrough in one direction from an input end to an output end. An optical fiber includes a core mainly composed of silica glass and doped with a predetermined rare-earth element and the other elements, and a cladding of silica glass, and transfers in a single mode the signal light output from the first optical isolator. An optical multiplexer multiplexes an excitation light having an excitation wavelength of 0.8 &mgr;m band with the signal light transferred by the optical fiber, by outputting the excitation light to the optical fiber, and further transfers and outputs the signal light having wavelengths of 1.06 &mgr;m band amplified by induced emission in the optical fiber due to the rare-earth element excited by the excitation light. Further, a second optical isolator makes the signal light outputted from the optical multiplexer pass therethrough in one direction from an input end thereof to an output end thereof, and outputs the signal light as an amplified signal light.

摘要翻译： 在用于放大波长为1.06μm波段的入射信号光的光放大器装置中，第一光隔离器使入射信号光从输入端到输出端沿一个方向通过。 光纤包括主要由石英玻璃构成并掺杂有预定稀土元素的核心和其它元素以及石英玻璃的包层，并且以单一模式传输从第一光隔离器输出的信号光。 光复用器通过向光纤输出激发光，将具有0.8μm波段的激发波长的激发光与由光纤传输的信号光复用，并且进一步传输和输出波长为1.06μm波段的信号光放大 由于由激发光激发的稀土元素引起的光纤中的感应发射。 此外，第二光隔离器使得从光复用器输出的信号光从其输入端到其输出端在一个方向通过，并输出信号光作为放大信号光。

公开(公告)号：US06611650B2

公开(公告)日：2003-08-26

申请号：US09925678

申请日：2001-08-09

申请人： Hiroyuki Hayami ,  Terunobu Iio ,  Toshikazu Gozen ,  Hirokazu Kuzushita ,  Michitsugu Mori ,  Takashi Okamura ,  Shuichi Ohmori

发明人： Hiroyuki Hayami ,  Terunobu Iio ,  Toshikazu Gozen ,  Hirokazu Kuzushita ,  Michitsugu Mori ,  Takashi Okamura ,  Shuichi Ohmori

IPC分类号： G02B600

CPC分类号： C03C3/06 ,  C03B37/01413 ,  C03B37/01426 ,  C03B2201/07 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/23 ,  C03B2207/30 ,  C03B2207/32 ,  C03C13/045 ,  C03C2201/12 ,  C03C2201/23 ,  C03C2201/26 ,  G02B6/06

摘要： A silica optical fiber is provided, which contains a pure-silica core and a cladding layer formed on the pure-silica core, wherein the pure-silica core contains a C element and has a content of elements belonging to the third period-the seventh period of the periodic table, except Si element that constitutes the quartz structure, of not more than 100 ppm. The present invention can provide a silica optical fiber superior in the resistance to high energy electromagnetic waves such as UV light and &ggr;-rays.

公开(公告)号：US4255318A

公开(公告)日：1981-03-10

申请号：US58334

申请日：1979-07-17

申请人： Tamotsu Kaide ,  Toshikazu Gozen ,  Jinichi Taniguchi ,  Yutaka Ohta

发明人： Tamotsu Kaide ,  Toshikazu Gozen ,  Jinichi Taniguchi ,  Yutaka Ohta

IPC分类号： C08K3/22 ,  C09D5/34 ,  C08K7/14

CPC分类号： C09D5/34 ,  C08K3/22 ,  Y10S260/24

摘要： A composition for filling the spaces in bores penetrating walls and floors of buildings and having electric wires and cables extending therethrough or for filling the clearances at the joints of interior finishing materials of buildings. The composition comprises (a) 100 parts by weight of a curable polychloroprene in a liquid state at room temperature, (b) about 200 to about 700 parts by weight of a hydrated metallic oxide, and (c) about 20 to about 100 parts by weight of a heat-resistant fibrous material. The components (b) and (c) are contained in a combined amount of at least about 250 parts by weight per 100 parts by weight of the component (a). The composition will not soften, sag or drip in molten drops even when subjected to the high-temperature conditions of a fire, and gives a tough residual product retaining the original shape when burned and ashed, effectively preventing the spread of fire and assuring outstanding smoketightness.

摘要翻译： 用于填充穿过建筑物的墙壁和地板的孔中的空间的组合物，并且具有延伸穿过其中的电线和电缆或用于填充建筑物内部装饰材料的接合处的间隙。 组合物包含（a）100重量份在室温下为液态的可固化聚氯丁二烯，（b）约200至约700重量份的水合金属氧化物，和（c）约20至约100重量份 耐热纤维材料的重量。 组分（b）和（c）以每100重量份组分（a）至少约250重量份的总量含有。 即使遭受火灾高温条件下，组合物也不会软化，下垂或滴落在熔融液滴中，并且在烧焦和灰化时产生保持原始形状的坚硬残留物，有效防止火势蔓延并确保优异的烟雾度 。

公开(公告)号：US4893896A

公开(公告)日：1990-01-16

申请号：US216382

申请日：1988-07-08

申请人： Hiroyuki Tanaka ,  Takeshi Satake ,  Toshikazu Gozen ,  Toshiya Suzuki ,  Atsushi Utsumi

发明人： Hiroyuki Tanaka ,  Takeshi Satake ,  Toshikazu Gozen ,  Toshiya Suzuki ,  Atsushi Utsumi

IPC分类号： G02B6/10

CPC分类号： G02B6/102

摘要： The present invention relates to an energy transmission optical fiber which is a medium for transmitting high-energy beams within an ultraviolet range such as laser beams. Since an optical fiber according to the present invention comprises a core formed of pure silica and a clad having a graded index type distribution of refractive index and said clad is disposed on an interface between the core and the clad where many structural defects are generated, the transmission loss is not increased even after the transmission of high-energy beams for a long time. In addition, since the optical fiber according to the present invention comprises the core formed of pure silica having a high melting point, the high-energy beams can be transmitted without generating a melting fracture in the core.

摘要翻译： 本发明涉及能量传输光纤，其是用于在诸如激光束的紫外范围内传输高能束的介质。 由于根据本发明的光纤包括由纯二氧化硅形成的芯和具有折射率分级折射率分布的包层，并且所述包层设置在芯和包层之间的界面处，其中产生许多结构缺陷， 即使在高能量束长时间传输之后传输损耗也不会增加。 此外，由于根据本发明的光纤包括由具有高熔点的纯二氧化硅形成的芯，所以可以传输高能束而不会在芯中产生熔融断裂。