-
公开(公告)号：US5446820A
公开(公告)日：1995-08-29
申请号：US98908
申请日：1993-07-29
CPC分类号： G02B6/2552
摘要： An object of this invention is to provide a mode field diameter conversion optical fiber which can be processed in a short period of time to have a reduced mode field diameter at a desired portion thereof. The optical fiber according to this invention comprises a core of silica glass having a residual tensile stress, and a cladding surrounding the core and having a lower refractive index than that of the core. The desired portion is heated to relax the residual tensile stress in the core, whereby the optical fiber has a reduced mode field diameter at the desired portion.
摘要翻译： 本发明的目的是提供一种可以在短时间内处理以在其期望部分具有减小的模场直径的模场直径转换光纤。 根据本发明的光纤包括具有残余拉伸应力的石英玻璃芯和围绕芯的包层，并且折射率低于芯的折射率。 加热所需部分以松弛芯中的残余拉伸应力，由此光纤在期望部分具有减小的模场直径。
-
公开(公告)号：US5306322A
公开(公告)日：1994-04-26
申请号：US924767
申请日：1992-07-24
申请人： Shinji Ishikawa , Yuichi Ohga , Ichiro Tsuchiya , Hiroo Kanamori , Hiroshi Yokota , Michihisa Kyoto
发明人： Shinji Ishikawa , Yuichi Ohga , Ichiro Tsuchiya , Hiroo Kanamori , Hiroshi Yokota , Michihisa Kyoto
IPC分类号： G02B6/00 , C03B37/014 , C03B37/023
CPC分类号： C03B37/01446 , C03B37/0146 , C03B2201/07 , C03B2201/075 , C03B2201/12 , Y10S65/16 , Y10S65/90
摘要： The present invention providesa process for the dehydrating and purifying treatment by heating a porous glass preform for an optical fiber comprising passing the porous glass preform through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere comprising an inert gas and a silicon halogenide gas;a process for the fluorine-doping treatment by heating a porous glass preform for an optical fiber comprising passing a porous glass preform through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere comprising a fluorine compound gas and an inert gas; anda process for the vitrifying treatment by heating a porous glass preform for an optical fiber comprising passing the preform, which has been previously dehydrated and purified, through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere gas.
摘要翻译： 本发明提供了一种通过加热用于光纤的多孔玻璃预制件进行脱水和净化处理的方法，包括使多孔玻璃预制件通过具有SiC层的马弗管至少在其内表面上在高温下在包括 惰性气体和卤化硅气体; 通过加热用于光纤的多孔玻璃预制件进行氟掺杂处理的方法，包括使多孔玻璃预制件通过具有SiC层的马弗管至少在其内表面上在高温下在包含氟化合物气体 和惰性气体; 以及通过加热用于光纤的多孔玻璃预制件进行玻璃化处理的方法，包括使预先脱水和净化的预成型体至少在其内表面上通过具有SiC层的马弗管在高温下 气氛气体。
-
公开(公告)号：US5259856A
公开(公告)日：1993-11-09
申请号：US891913
申请日：1992-06-01
IPC分类号： C03B37/014
CPC分类号： C03B37/01446 , C03B37/0146 , C03B2201/12 , C03B2203/22 , Y10S65/16 , Y10S65/90
摘要： A heating furnace for heating a porous preform made of fine particles of quartz base glass for an optical fiber which comprises a heater and a muffle tube positioned inside the heater to separate a heating atmosphere from the heater, wherein the muffle tube body consists of highly pure carbon and an inner wall and an outer wall of the body is coated with a carbon material selected from the group consisting of pyrolytic graphite and solid-phase carbonized glassy carbon.
摘要翻译： 一种加热炉，用于加热由用于光纤的石英基底玻璃的微细颗粒制成的多孔预成型件，该多孔预制件包括位于加热器内部的加热器和马弗管，以将加热气体与加热器分离，其中马弗管体由高纯度 碳和主体的内壁和外壁涂覆有选自热解石墨和固相碳化玻璃碳的碳材料。
-
公开(公告)号：US5106401A
公开(公告)日：1992-04-21
申请号：US544942
申请日：1990-06-28
申请人： Shinji Ishikawa , Yuichi Ohga , Ichiro Tsuchiya , Hiroo Kanamori , Hiroshi Yokota , Michihisa Kyoto
发明人： Shinji Ishikawa , Yuichi Ohga , Ichiro Tsuchiya , Hiroo Kanamori , Hiroshi Yokota , Michihisa Kyoto
IPC分类号： G02B6/00 , C03B37/014
CPC分类号： C03B37/01446 , C03B37/0146 , C03B2201/07 , C03B2201/075 , C03B2201/12 , Y10S65/16 , Y10S65/90
摘要： The present invention providesa process for the dehydrating and purifying treatment by heating a porous glass preform for an optical fiber by passing the porous glass preform through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere containing an inert gas and a silicon halogenide gas;a process for the fluorine-doping treatment by heating a porous glass preform for an optical fiber by passing a porous glass preform through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere containing a fluorine compound gas and an inert gas; anda process for the vitrifying treatment by heating a porous glass preform for an opticla fiber by passing the preform, which has been previously dehydrated and purified, through a muffle tube having a SiC layer at least on its inner surface at a high temperature under an atmosphere gas.
-
公开(公告)号：US5320658A
公开(公告)日：1994-06-14
申请号：US921991
申请日：1992-08-03
IPC分类号： G02B6/00 , C03B37/027 , C03B37/029 , C03B37/023
CPC分类号： C03B37/02718 , C03B37/029 , C03B2205/56 , C03B2205/63 , Y02P40/57
摘要： There is provided a process of melt drawing an optical fiber from a preform therefor in which a heating furnace comprising a muffle tube inside thereof through which the optical fiber is passed is provided immediately below a melt drawing furnace to further draw the optical fiber while heated, and an interior of the muffle tube is kept in an atmosphere selected from the group consisting of an inert atmosphere, an atmosphere comprising oxygen gas and an atmosphere comprising hydrogen gas.
摘要翻译： 提供了一种从其预成型件熔融拉伸光纤的方法，其中在熔融拉拔炉的正下方设置包括其中通过光纤的马弗管的加热炉，以在加热下进一步拉伸光纤， 并且马弗管的内部保持在选自惰性气氛，包含氧气和包含氢气的气氛的气氛中的气氛中。
-
公开(公告)号：US5381503A
公开(公告)日：1995-01-10
申请号：US61385
申请日：1993-05-14
CPC分类号： G02B6/262 , G02B6/2552
摘要： There is disclosed an optical waveguide comprising a core portion made of a light propagating material and a cladding portion, a first dopant and a second dopant being induced into said core portion, the first dopant having a function of increasing a refractive index of the light propagating material and having a first thermal diffusion coefficient to said light propagating material, the second dopant having a function of decreasing the refractive index of said light propagating material and having a second thermal diffusion coefficient to the light propagating material larger than the first thermal diffusion coefficient under a predetermined temperature.
摘要翻译： 公开了一种光波导，包括由光传播材料和包层部分构成的芯部分，第一掺杂剂和第二掺杂剂被诱导到所述芯部分中，第一掺杂剂具有增加传播光的折射率的功能 材料，并且对所述光传播材料具有第一热扩散系数，第二掺杂剂具有降低所述光传播材料的折射率并且具有比第一热扩散系数大的第二热扩散系数的第二热扩散系数的函数， 预定温度。
-
公开(公告)号：US6144784A
公开(公告)日：2000-11-07
申请号：US209419
申请日：1998-12-11
CPC分类号： G02B6/2932 , G02B6/29383 , H04J14/0201
摘要： The present invention relates to an optical I/O module and light-reflecting device comprising a structure excellent in expandability having a high degree of freedom in designing. The optical I/O module according to the present invention comprises a directional coupler having, at least, input and output ports for constituting a part of a transmission line and an intermediate port for constituting a branch; and a light-reflecting device, optically connected to the intermediate port, for transmitting therethrough a specific wavelength. This structure can realize various configurations which allow a specific wavelength to be dropped from the transmission line and to be added to the transmission line, without influencing the configuration of the transmission line.
摘要翻译： 本发明涉及一种光学I / O模块和光反射装置，其包括在设计中具有高自由度的可扩展性优异的结构。 根据本发明的光I / O模块包括定向耦合器，至少具有用于构成传输线的一部分的输入和输出端口以及用于构成分支的中间端口; 以及光反射装置，光学连接到中间端口，用于透射特定波长。 该结构可以实现允许特定波长从传输线路丢弃并被添加到传输线路的各种配置，而不影响传输线路的配置。
-
公开(公告)号：US5238479A
公开(公告)日：1993-08-24
申请号：US984734
申请日：1992-12-04
申请人： Yuichi Ohga , Toshio Danzuka , Hiroo Kanamori , Hiroshi Yokota
发明人： Yuichi Ohga , Toshio Danzuka , Hiroo Kanamori , Hiroshi Yokota
IPC分类号： C03B37/014
CPC分类号： C03B37/0142 , C03B2201/31 , C03B2203/22 , C03B2203/26 , C03B2207/06 , C03B2207/20 , C03B2207/24 , C03B2207/26 , C03B2207/28 , C03B2207/50
摘要： The invention is a method for producing a porous preform for use in the fabrication of an optical fiber at least two burners synthesize glass soot particles, one of which generates a double-layer flame and one of which is used for forming a core part of the preform. The method comprises the steps of supplying SiCl.sub.4 and optionally GeCl.sub.4 to the inner flame of the double-layer flame, and only SiCl.sub.4 to an outer flame of the double-layer flame to flame hydrolyze the supplied compounds and synthesize glass soot particles. Compounds SiCl.sub.4 and GeCl.sub.4 as glass-forming raw materials are supplied to the burner for forming the core part of the preform by depositing the generated glass soot particles on the lower end of a rotating starting member. The generated porous preform comprises a core part containing at least partly GeO.sub.2, and a surface having a low concentration of GeO.sub.2 which reduces cracking or peeling.
摘要翻译： 本发明是用于制造用于制造光纤的多孔预制棒的方法，至少两个燃烧器合成玻璃烟灰颗粒，其中一个产生双层火焰，其中一个用于形成 预制件。 该方法包括以下步骤：向双层火焰的内部火焰提供SiCl 4和任选的GeCl 4，并且仅将SiCl 4与双层火焰的外部火焰直接火焰水解所提供的化合物并合成玻璃烟灰颗粒。 作为玻璃形成原料的化合物SiCl4和GeCl4通过将生成的玻璃烟灰颗粒沉积在旋转起始构件的下端而供给到用于形成预成型体的芯部的燃烧器。 生成的多孔预制件包括至少部分含有GeO 2的核心部分和具有低浓度GeO 2的表面，其减少开裂或剥离。
-
公开(公告)号：US5377294A
公开(公告)日：1994-12-27
申请号：US77935
申请日：1993-06-18
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
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.
-
-
-
-
-
-
-
-
-
搜索结果
62 条记录 (耗时 0.023 秒)
