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1. 发明授权

US5546483A Integrated optical waveguide circuit and optical branch line test system using the same 失效
标题翻译：集成光波导电路和光分支线路测试系统使用相同
公开(公告)号：US5546483A
公开(公告)日：1996-08-13
申请号：US285633
申请日：1994-08-01
申请人： Yasuyuki Inoue , Masao Kawachi , Katsunari Okamoto , Norio Takato , Fumihiko Yamamoto , Hiroyuki Suda , Shinichi Furukawa , Akira Morinaka
发明人： Yasuyuki Inoue , Masao Kawachi , Katsunari Okamoto , Norio Takato , Fumihiko Yamamoto , Hiroyuki Suda , Shinichi Furukawa , Akira Morinaka
IPC分类号： G01M11/00 , G02B6/12 , G02B6/30 , G02B6/34 , G01B9/02 , H04B10/24
CPC分类号： G01M11/3154 , G01M11/3136 , G02B6/12011 , G02B6/12014 , G02B6/12016 , G02B6/12019 , G02B6/12023 , G02B2006/12164 , G02B6/12033 , G02B6/30
摘要： An integrated optical waveguide circuit includes a substrate; an optical wavelength multiplexer and an optical power splitter formed on a same surface of the substrate. The optical wavelength multiplexer is composed of a first slab optical waveguide, a second slab optical waveguide, a single or a plurality of input optical waveguides connected to the first slab optical waveguide at one end of the first slab optical waveguide, a plurality of arrayed optical waveguides arranged in parallel and having different lengths and connected to the first slab optical waveguide and the second slab optical waveguide, and a plurality of output optical waveguides arranged in parallel and connected to the second slab optical waveguide. The optical power splitter is composed of the second slab optical waveguide, one or more input optical waveguides, and the plurality of output optical waveguides arranged in parallel and connected to the second slab optical waveguide.
摘要翻译：集成光波导电路包括基板; 形成在基板的同一表面上的光波长多路复用器和光功率分配器。光波长多路复用器由第一平板光波导，第二平板光波导，连接到第一平板光波导一端的第一平板光波导的单个或多个输入光波导组成，多个阵列光学平行布置且具有不同长度并且连接到第一平板光波导和第二平板光波导的波导和平行布置并连接到第二平板光波导的多个输出光波导。光功率分配器由第二平板光波导，一个或多个输入光波导和多个平行布置并连接到第二平板光波导的输出光波导组成。

2. 发明授权

US5247594A Waveguide-type optical matrix switch 失效
标题翻译：波导型光矩阵开关
公开(公告)号：US5247594A
公开(公告)日：1993-09-21
申请号：US853989
申请日：1992-03-20
申请人： Masayuki Okuno , Kuniharu Kato , Katsumi Katoh , Masao Kawachi
发明人： Masayuki Okuno , Kuniharu Kato , Katsumi Katoh , Masao Kawachi
IPC分类号： G02B6/12 , G02B6/125 , G02B6/28 , G02F1/01 , G02F1/313
CPC分类号： G02F1/3136 , G02B6/125 , G02B6/2804 , G02B6/2821 , G02B2006/12145 , G02B2006/12159 , G02F1/0147 , G02F2001/0113
摘要： A waveguide-type optical matrix switch including as its switching element a Mach-Zehnder interferometer which includes two directional couplers and an optical phase shifter. The two directional couplers are arranged by placing two optical waveguides in close proximity at two positions on a substrate, and have an identical coupling ratio. The optical phase shifter is disposed over at least one of the two optical waveguides between the directional couplers. The two optical waveguides have an effective optical path length difference of half a wavelength of a light signal between the two directional couplers, and are intersected in the optical switch element. The waveguide-type optical matrix switch is little affected by fabrication errors in the coupling ratio of the directional couplers, and superior in the extinction ratio.
摘要翻译：一种波导型光矩阵开关，包括作为其开关元件的包括两个定向耦合器和光学移相器的马赫 - 曾德干涉仪。两个定向耦合器通过将两个光波导放置在靠近基板上的两个位置并且具有相同的耦合比来布置。光学移相器设置在定向耦合器之间的两个光波导中的至少一个上。两个光波导具有在两个定向耦合器之间的光信号的一半波长的有效光程长度差，并且在光开关元件中相交。波导型光矩阵开关几乎不受定向耦合器耦合比的制造误差的影响，消光比优越。

3. 发明授权

US06643463B1 Optical wavelength division multiplexing transmission network system using transmitting/receiving apparatuses having 2-input and 2-output optical path switching elements 有权
标题翻译：使用具有2输入和2输出光路交换元件的发射/接收装置的光波分复用传输网系统
公开(公告)号：US06643463B1
公开(公告)日：2003-11-04
申请号：US09581998
申请日：2000-06-21
申请人： Senichi Suzuki , Masao Kawachi , Kennosuke Fukami , Yuji Akatsu , Kazutosi Kato , Mitsuru Harada , Junichi Akahani , Atsushi Takahara
发明人： Senichi Suzuki , Masao Kawachi , Kennosuke Fukami , Yuji Akatsu , Kazutosi Kato , Mitsuru Harada , Junichi Akahani , Atsushi Takahara
IPC分类号： H04J1402
CPC分类号： H04J14/0282 , H04J14/02 , H04J14/0227 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0032
摘要： An optical wavelength division multiplexing transmission network system having a star-topology network is disclosed, which comprises an arrayed-waveguide grating type multiplexing/demultiplexing circuit having N input ports and N output ports, and N transmitting/receiving apparatuses, each apparatus including a transmitter, receiver, demultiplexer, multiplexer, and N 2-input and 2-output optical path switching elements corresponding to N wavelengths, so as to cope with a damage to a transmitting or receiving portion corresponding to a specific wavelength. Each switching element is independently switched between first and second connective conditions. In the first connective condition, the output port corresponding to a specific wavelength of the demultiplexer is connected to the input port corresponding to the specific wavelength of the receiver, and the output port corresponding to a specific wavelength of the transmitter is connected to the input port corresponding to the specific wavelength of the multiplexer; and in the second connective condition, the output port corresponding to a specific wavelength of the transmitter is connected to the input port corresponding to the specific wavelength of the receiver, and the output port corresponding to a specific wavelength of the demultiplexer is connected to the input port corresponding to the specific wavelength of the multiplexer.
摘要翻译：公开了一种具有星形拓扑网络的光波分复用传输网络系统，其包括具有N个输入端口和N个输出端口的阵列波导光栅型复用/解复用电路，以及N个发射/接收设备，每个设备包括发射机，对应于N个波长的接收机，解复用器，多路复用器和N 2输入和2输出光路开关元件，以便应对对与特定波长相对应的发送或接收部分的损坏。每个开关元件在第一和第二连接条件之间独立地切换。在第一连接条件下，对应于解复用器的特定波长的输出端口连接到对应于接收机的特定波长的输入端口，并且对应于发射器的特定波长的输出端口连接到输入端口对应于多路复用器的特定波长; 并且在第二连接条件下，对应于发射机的特定波长的输出端口连接到对应于接收机的特定波长的输入端口，并且对应于解复用器的特定波长的输出端口连接到输入端端口对应于多路复用器的特定波长。

4. 发明授权

US4900112A Integrated optical device and method for manufacturing thereof 失效
标题翻译：集成光学装置及其制造方法
公开(公告)号：US4900112A
公开(公告)日：1990-02-13
申请号：US211556
申请日：1988-06-24
申请人： Masao Kawachi , Norio Takato , Kaname Jinguji , Akio Sugita , Shin Sumida
发明人： Masao Kawachi , Norio Takato , Kaname Jinguji , Akio Sugita , Shin Sumida
IPC分类号： G02B6/122 , G02B6/10 , G02B6/12 , G02B6/126 , G02B6/13 , G02B6/14 , G02B6/34 , G02F1/01
CPC分类号： G02B6/12007 , G02B6/105 , G02B6/126 , G02B6/13 , G02B6/29353
摘要： An integrated optical device includes a substrate; a single-mode optical waveguide having a cladding layer disposed on the substrate and a core portion embedded in the cladding layer for transmitting light therethrough; and a stress applying film disposed on a desired portion of the cladding layer for adjusting stress-induced birefringence of the single-mode optical waveguide by irreversibly changing the stress exerted on the core portion by a trimming technique. The integrated optical device can be manufactured by the steps of forming a cladding layer on a substrate; forming a single-mode optical waveguide having a core portion embedded in the cladding layer for transmitting light therethrough; and forming, on the cladding layer, a stress applying film for exerting a stress on the single-mode optical waveguide to irreversibly change the stress by trimming the film. The device exhibits a precisely adjusted birefringence and a desired polarization dependence or independence, and is effective for constructing an integrated optical device for optical communication, for optical sensing, or for optical signal processing, in which the polarization characteristics play an important role.

5. 发明授权

US4781424A Single mode channel optical waveguide with a stress-induced birefringence control region 失效
标题翻译：具有应力诱导双折射控制区域的单模通道光波导
公开(公告)号：US4781424A
公开(公告)日：1988-11-01
申请号：US49387
申请日：1987-05-13
申请人： Masao Kawachi , Kaname Jinguji , Norio Takato , Mitsuho Yasu , Katsunari Okamoto
发明人： Masao Kawachi , Kaname Jinguji , Norio Takato , Mitsuho Yasu , Katsunari Okamoto
IPC分类号： G02B6/126 , G02F1/01 , G02F1/21 , G02F1/313 , G02B5/14
CPC分类号： G02B6/126 , G02F1/0134 , G02F1/0147 , G02F1/3136 , G02F2001/212
摘要： In a single mode optical waveguide having a substrate, a cladding layer formed on the substrate, a core portion embedded in the cladding layer, and an elongated member for applying a stress to the core portion or a stress relief groove for relieving a stress from the core portion in the cladding layer along the core portion. The position, shape and material of the elongated member or the groove are determined in such a way that stress-induced birefringence produced in the core portion in accordance with a difference in thermal expansion coefficient between the substrate and the single mode optical waveguide is a desired value.
摘要翻译：在具有基板的单模光波导中，形成在基板上的包覆层，嵌入包覆层中的芯部以及用于向芯部施加应力的细长部件或用于缓解来自芯部的应力释放槽沿芯部的包层的芯部。细长构件或凹槽的位置，形状和材料以这样的方式确定，即根据衬底和单模光波导之间的热膨胀系数的差异在芯部中产生的应力引起的双折射是期望的值。

6. 发明授权

US4763977A Optical fiber coupler with tunable coupling ratio and method of making 失效
标题翻译：具有可调耦合比的光纤耦合器和制造方法
公开(公告)号：US4763977A
公开(公告)日：1988-08-16
申请号：US690099
申请日：1985-01-09
申请人： Brian S. Kawasaki , Masao Kawachi , Kenneth O. Hill , Derwyn C. Johnson
发明人： Brian S. Kawasaki , Masao Kawachi , Kenneth O. Hill , Derwyn C. Johnson
IPC分类号： G02B6/28 , G02B6/26 , G02B6/42
CPC分类号： G02B6/2835 , G02B6/283 , Y10S359/90
摘要： An optical coupler for single mode optical signals having a tunable (variable) coupling ratio, and a method of fabricating the coupler. A pair of virtually identical optical fibers are fused together at a narrowed waist region, each fiber being formed of a core and cladding, each being tapered toward the waist in such a manner as to ensure adiabatic propagation of light in the structure. An optical signal carried by one fiber first passes through a decreasing taper region and then passes through an increasing taper region of one or the other fiber (or both). The decreasing taper rate of the input portion of one fiber is such that the optical signal radiates out of the core (where V=1 locally) and into the cladding, as it approaches the waist. The increasing taper rates of the output portions of the two fibers are such that a predetermined coupling ratio is obtained. The coupler is bent in the region of the waist whereby a coupling ratio can be selected between the incoming fiber portions having the decreasing taper and the outgoing fibers having increasing tapers.
摘要翻译：一种具有可调谐（可变）耦合比的单模光信号的光耦合器，以及一种制造耦合器的方法。一对实际上相同的光纤在狭窄的腰部区域融合在一起，每个纤维由芯和包层形成，每个纤维都以朝向腰部渐缩的方式形成，以确保光在结构中的绝热传播。一个光纤所携带的光信号首先通过减小的锥形区域，然后通过一个或另一个光纤（或两者）的增加的锥形区域。一个光纤的输入部分的减小的锥形速率使得光信号在接近腰部时从芯（其中V = 1局部）辐射出并进入包层。两根纤维的输出部分的逐渐增大的锥度使得获得预定的耦合比。耦合器在腰部的区域中弯曲，从而可以在具有减小的锥度的进入纤维部分和出口纤维之间选择耦合比来增加锥度。

7. 发明授权

US4406684A Core torch for fabricating single-mode optical fiber preforms 失效
标题翻译：用于制造单模光纤预制棒的核心手电筒
公开(公告)号：US4406684A
公开(公告)日：1983-09-27
申请号：US386752
申请日：1982-06-09
申请人： Masao Kawachi , Satoru Tomaru , Takao Edahiro , Shoichi Suto
发明人： Masao Kawachi , Satoru Tomaru , Takao Edahiro , Shoichi Suto
IPC分类号： C03B37/014 , C03B19/06
CPC分类号： C03B37/0144 , C03B37/014 , C03B2203/22 , C03B2203/24 , C03B2207/04 , C03B2207/06 , C03B2207/10 , C03B2207/16 , C03B2207/18 , C03B2207/20 , C03B2207/42 , C03B2207/50 , C03B2207/60 , C03B2207/64 , Y02P40/57 , Y10S65/90
摘要： A core torch for fabricating a single-mode optical fiber preform wherein fine glass particles are produced eccentrically with respect to the center area of a flame stream, the core torch being so arranged as to blow the flame stream at an angle inclined to a seed rod. The porous glass body forming the core is grown on one end of the rod and in the direction of the axis of the rod. A cladding layer is formed on the periphery of the porous glass core body by at least one torch for forming the cladding. The obtained porous glass body is heated and vitrified into a transparent glass body, which is sealed in a silica tube for jacketting to form a single-mode optical fiber preform. At least one exhaust port is disposed within a distance of 1 mm to 50 mm from the periphery of the porous glass body and in the vicinity of the growing surface of the glass body to exhaust residual glass fine particles and undesired gases. A porous glass body having a diameter of 20 mm or less is easily formed. Single-mode optical fiber having a cladding-to-core-diameter ratio of 3 or more is fabricated by the VAD method. Accordingly, a long-length and low-loss single-mode optical fiber is mass-produced.
摘要翻译：一种用于制造单模光纤预制件的核心手电筒，其中相对于火焰流的中心区域产生偏心的细玻璃颗粒，所述芯焊炬布置成以与种子杆倾斜的角度吹动火焰流。形成芯的多孔玻璃体在棒的一端和棒的轴线方向上生长。通过用于形成包层的至少一个焊炬在多孔玻璃芯体的周边上形成包覆层。将得到的多孔玻璃体加热并玻璃化成透明玻璃体，将其密封在用于夹套的石英管中，形成单模光纤预制棒。至少一个排气口设置在与多孔玻璃体的周边1mm至50mm的距离内，并且在玻璃体的生长表面附近，以排出残余的玻璃微粒和不期望的气体。容易形成直径为20mm以下的多孔玻璃体。通过VAD法制造包芯到芯直径比为3以上的单模光纤。因此，大批量生产长长度和低损耗的单模光纤。

8. 发明授权

US4367085A Method of fabricating multi-mode optical fiber preforms 失效
标题翻译：制造多模光纤预制棒的方法
公开(公告)号：US4367085A
公开(公告)日：1983-01-04
申请号：US188916
申请日：1980-09-19
申请人： Shoichi Suto , Fumiaki Hanawa , Masao Kawachi , Takao Edahiro , Motohiro Nakahara
发明人： Shoichi Suto , Fumiaki Hanawa , Masao Kawachi , Takao Edahiro , Motohiro Nakahara
IPC分类号： C03B37/014 , C03B19/06 , C03B37/07
CPC分类号： C03B37/014 , C03B37/0144 , C03B2203/22 , C03B2203/24 , C03B2207/04 , C03B2207/06 , C03B2207/10 , C03B2207/16 , C03B2207/18 , C03B2207/20 , C03B2207/42 , C03B2207/50 , C03B2207/60 , C03B2207/64 , Y02P40/57
摘要： A method of fabricating an optical fiber preform wherein a synthesizing torch is inclined between 10.degree. and 60.degree. with respect to the rotation axis of a seed rod. Moving the rod while rotating it, a glass raw material gas and a flame forming gas are blown out individually from the torch to synthesize glass particles which are deposited onto one end of the rod, so that a cylindrical porous preform is grown in the direction of the rotation axis of the rod. Then the porous preform is heated at a high temperature to vitrify the porous preform into a transparent optical fiber preform. At least one exhaust port is disposed at a distance of 1 mm to 50 mm from the periphery of the porous preform and in the vicinity of the growing surface of the porous preform. In fabricating the porous preform the outer diameter fluctuations are small, and the preform is formed stably without formation of cracking on the periphery of the preform.
摘要翻译：一种制造光纤预制件的方法，其中合成炬相对于种棒的旋转轴线在10°和60°之间倾斜。在旋转杆的同时移动杆，玻璃原料气体和火焰形成气体从喷枪单独吹出以合成沉积在杆的一端上的玻璃颗粒，使得圆柱形多孔预制棒沿着杆的旋转轴线。然后将多孔预成型件在高温下加热以使多孔预成型件玻璃化成透明的光纤预制件。至少一个排气口设置在多孔预型件的周边1mm至50mm的距离处，并且在多孔预型件的生长表面附近。在制造多孔预成型件时，外径波动小，并且预成型件稳定地形成，而在预成型件的周边没有形成开裂。

9. 发明授权

US4345928A Fabrication method of single-mode optical fiber preforms 失效
标题翻译：单模光纤预制棒的制作方法
公开(公告)号：US4345928A
公开(公告)日：1982-08-24
申请号：US188914
申请日：1980-09-19
申请人： Masao Kawachi , Satoru Tomaru , Takao Edahiro , Shoichi Suto
发明人： Masao Kawachi , Satoru Tomaru , Takao Edahiro , Shoichi Suto
IPC分类号： C03B37/014 , C03B19/06
CPC分类号： C03B37/0144 , C03B37/014 , C03B2203/22 , C03B2203/24 , C03B2207/04 , C03B2207/06 , C03B2207/10 , C03B2207/16 , C03B2207/18 , C03B2207/20 , C03B2207/42 , C03B2207/50 , C03B2207/60 , C03B2207/64 , Y02P40/57 , Y10S65/90
摘要： A method of fabricating a single-mode optical fiber preform wherein a core torch produces fine glass particles eccentrically with respect to the center area of a flame stream, the core torch being so arranged as to blow the flame stream at an angle inclined to a seed rod. The porous glass body forming the core is grown on one end of the rod and in the direction of the axis of the rod. A cladding layer is formed on the periphery of the porous glass core body by at least one torch for forming the cladding. The obtained porous glass body is heated and vitrified into a transparent glass body, which is sealed in a silica tube for jacketting to form a single-mode optical fiber preform. At least one exhaust port is disposed within a distance of 1 mm to 50 mm from the periphery of the porous glass body and in the vicinity of the growing surface of the glass body to exhaust residual glass fine particles and undesired gases. A porous glass body having a diameter of 20 mm or less is easily formed. Single-mode optical fiber having a cladding-to-core-diameter ratio of 3 or more is fabricated by the VAD method. Accordingly, a long-length and low-loss single-mode optical fiber is mass-produced.
摘要翻译：一种制造单模光纤预成型件的方法，其中芯焊炬相对于火焰流的中心区域偏心地产生细微的玻璃颗粒，所述芯炬被布置成以与种子倾斜的角度吹动火焰流竿。形成芯的多孔玻璃体在棒的一端和棒的轴线方向上生长。通过用于形成包层的至少一个焊炬在多孔玻璃芯体的周边上形成包覆层。将得到的多孔玻璃体加热并玻璃化成透明玻璃体，将其密封在用于夹套的石英管中，形成单模光纤预制棒。至少一个排气口设置在与多孔玻璃体的周边1mm至50mm的距离内，并且在玻璃体的生长表面附近，以排出残余的玻璃微粒和不期望的气体。容易形成直径为20mm以下的多孔玻璃体。通过VAD法制造包芯到芯直径比为3以上的单模光纤。因此，大批量生产长长度和低损耗的单模光纤。

10. 发明授权

US5204921A Automated optical main distributing frame system 失效
标题翻译：自动光学主分布框系统
公开(公告)号：US5204921A
公开(公告)日：1993-04-20
申请号：US817519
申请日：1992-01-07
申请人： Tsuneo Kanai , Shigefumi Hosokawa , Kunihiko Sasakura , Syuichirou Inagaki , Shigeru Umemura , Hirobumi Kimura , Akira Nagayama , Mitsuhiro Makihara , Masao Kawachi
发明人： Tsuneo Kanai , Shigefumi Hosokawa , Kunihiko Sasakura , Syuichirou Inagaki , Shigeru Umemura , Hirobumi Kimura , Akira Nagayama , Mitsuhiro Makihara , Masao Kawachi
IPC分类号： G02B6/35 , G02B6/44 , G02B26/02 , H04Q1/14
CPC分类号： H04Q1/147 , G02B6/3538 , G02B6/4452 , H04Q1/023 , G02B26/004 , G02B6/3546 , G02B6/3596
摘要： In an optical MDF (main distributing frame) for interconnecting external subscriber optical lines (122) with office optical lines (131) through jumpering operation, a matrix waveguide (128, 129, 130) having a plurality of crosspoints coupled with external lines and office lines is used. The matrix waveguide has a groove (235 in FIG. 4A) at each crosspoint so that said crosspoint is switched ON or OFF depending upon whether said groove is filled with matching oil or not, so that one of the external lines is connected to the selected office line. Said matching oil has the same refractive index as that of waveguides. Each crosspoint groove is coupled with a respective oil pool (236), which supplies matching oil which has essentially the same refractive index as that of a waveguide to said groove. Switching at a crosspoint is carried out in a manner that a light signal in a waveguide goes straight through the crosspoint when a groove is filled with matching oil, and the light signal changes its direction at the crosspoint through total internal reflection when the groove is empty. A jumpering operation to connect or disconnect a crosspoint is carried out by a robot (133), which fills or pulls out matching oil in the oil pool at the designated coordinates. Each external line is branched by using an optical directional coupler (237) for test purposes, and one of the branch lines subject to test is selected by using a similar 1.times.N type matrix waveguide. (FIG. 4A)

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