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公开(公告)号：US20060269197A1
公开(公告)日：2006-11-30
申请号：US10547768
申请日：2004-03-05
申请人： Hitoshi Uno , Hiroaki Asano , Hironori Souda , Syougo Horinouchi , Toshinori Kai , Toshihiro Koga , Masaharu Fukakusa
发明人： Hitoshi Uno , Hiroaki Asano , Hironori Souda , Syougo Horinouchi , Toshinori Kai , Toshihiro Koga , Masaharu Fukakusa
IPC分类号： G02B6/36
CPC分类号： G02B6/4246 , G02B6/4214 , H01L2224/48091 , H01L2224/48463 , H01L2224/73265 , H01L2924/3025 , H01S5/02252 , H01S5/02284 , H01S5/02292 , H01L2924/00014 , H01L2924/00
摘要： In a bidirectional optical module, a technique for attaining a miniaturization and a lower cost of a bidirectional optical module in which one optical fiber propagation path can be bused in two ways is disclosed. According to this technique, a molded product 12 is made of a transparent material, and a beam splitter layer 121 is inclined and embedded. A sub carrier 15 has a stage portion constituting an upper stage and a lower stage and is mounted on a flat top plane of a carrier 19. A semiconductor laser 14 is mounted on the upper stage of the sub-carrier, and a light receiving device 13 is mounted at a lower position of the molded product on the lower stage, and a side of the molded product is mounted on the side, and the respective planes are consequently bonded.
摘要翻译： 在双向光模块中，公开了一种用于实现双向光模块的小型化和低成本的技术，其中一个光纤传播路径可以以两种方式被布置。 根据该技术，模制品12由透明材料制成，并且分束器层121倾斜并嵌入。 副载体15具有构成上段和下段的载物台部分，并且安装在载体19的平坦顶平面上。半导体激光器14安装在副载体的上层上，并且光接收装置 13被安装在下阶段的模制品的下部位置，并且模制品的侧面安装在侧面上，并且因此粘合各个平面。
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公开(公告)号：US5493440A
公开(公告)日：1996-02-20
申请号：US324972
申请日：1994-10-18
申请人： Hironori Souda , Masaaki Tojo , Noboru Kurata , Masanori Iida
发明人： Hironori Souda , Masaaki Tojo , Noboru Kurata , Masanori Iida
CPC分类号： G02B6/2746 , G02F1/093 , H01S3/06754 , G02B6/4246
摘要： On one end side of a converging rod lens are provided a first and second input optical fibers and a first and second output optical fibers. On the other end side of the converging rod lens is provided a reflecting mirror. Between the converging lens and the first and second input and output optical fibers is provided a birefringent element for resolving a ray which passes therethrough into an ordinary ray and an extraordinary ray. In the optical paths of the first and second output optical fibers between the converging rod lens and birefringent element is placed a compensator for rotating 45 degrees the plane of polarization of a ray which passes therethrough. The reflecting mirror reflects incident rays from the first and second input optical fibers to the first and second output optical fibers. Between the converging rod lens and the reflecting mirror is provided a magneto-optical element for rotating 22.5 degrees the plane of polarization of a ray which passes therethrough. The rays emitted from the first and second input optical fibers have their planes of polarization rotated 90 degrees by the magneto-optical element and compensator.
摘要翻译： 在会聚杆透镜的一端侧设置有第一和第二输入光纤以及第一和第二输出光纤。 在会聚杆透镜的另一端设有反射镜。 在会聚透镜和第一和第二输入和输出光纤之间设置有用于将通过其中的光线分解为普通光线和非凡光线的双折射元件。 在会聚棒透镜和双折射元件之间的第一和第二输出光纤的光路中设置有用于使通过其的光线的偏振平面旋转45度的补偿器。 反射镜将来自第一和第二输入光纤的入射光线反射到第一和第二输出光纤。 在聚光棒透镜和反射镜之间设置有用于使穿过其中的光线的偏振面旋转22.5度的磁光元件。 从第一和第二输入光纤发射的光线通过磁光元件和补偿器使其偏振面旋转90度。
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公开(公告)号：US5299056A
公开(公告)日：1994-03-29
申请号：US56535
申请日：1993-05-05
申请人： Noboru Kurata , Hironori Souda , Masaaki Tojo
发明人： Noboru Kurata , Hironori Souda , Masaaki Tojo
CPC分类号： G02B6/272 , G02B6/2766 , G02F1/0955 , G02B6/3822
摘要： An optical fiber amplifier suited for use in optical fiber transmission systems includes a plurality of optical passive components. The optical passive components are integrated into an assembly including a birefringent crystal, a first lens, a magneto-optic crystal, an optical filter, and a second lens, all of which are axially aligned in this order, with a half-wave plate interposed between the birefringent crystal and the first lens. The birefringent crystal is opposed to end faces of first and second optical fibers and separates incident light into two linearly polarized light beams having respective polarized light planes generally perpendicular to each other. The half-wave plate allows light emitted from the second optical fiber to pass therethrough and rotates a polarized light plane of incident light. The first lens converts incident light into a generally collimated ray, and the magneto-optic crystal rotates a polarized light plane of incident light by an angle of .pi./8+Nn/4 (N=0, 1, 2, . . .) under the influence of a magnetic field. The optical filter reflects light having a specific wavelength and allows light having a wavelength other than this specific wavelength to pass therethrough, and the second lens are opposed to end faces of third and fourth optical fibers and converges a collimated ray introduced thereinto. By this construction, an optical coupling system is constituted between the first and second optical fibers and between the third and fourth optical fibers and one of the first and second optical fibers.
摘要翻译： 适用于光纤传输系统的光纤放大器包括多个光无源部件。 光学无源部件被集成到包括双折射晶体，第一透镜，磁光晶体，滤光器和第二透镜的组件中，所有这些都按照该顺序轴向对准，其中插入了半波片 在双折射晶体和第一透镜之间。 双折射晶体与第一和第二光纤的端面相对，并将入射光分离成具有彼此垂直的各偏振光平面的两个线偏振光束。 半波片允许从第二光纤发射的光通过，并使入射光的偏振光平面旋转。 第一透镜将入射光转换成大致平行的光线，并且磁光晶体将入射光的偏振光平面旋转角度（pi）/ 8 + Nn / 4（N = 0,1,2，...）。 。）在磁场的影响下。 滤光器反射具有特定波长的光，并且允许具有不同于该特定波长的波长的光通过其中，并且第二透镜与第三和第四光纤的端面相对并且会聚入射入的准直光。 通过这种结构，在第一和第二光纤之间以及第三和第四光纤之间以及第一和第二光纤中的一个之间构成光耦合系统。
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公开(公告)号：US5689360A
公开(公告)日：1997-11-18
申请号：US475344
申请日：1995-06-07
申请人： Noboru Kurata , Masaaki Tojo , Hironori Souda
发明人： Noboru Kurata , Masaaki Tojo , Hironori Souda
CPC分类号： G02B6/2746 , G02B6/272 , G02B6/2766 , G02B6/2937 , G02B6/4246 , G02F1/093 , G02B6/4207 , G02B6/4208 , Y10S372/703
摘要： A polarization independent optical isolator for transmitting a signal ray in a forward direction and suppressing backward transmission comprises: a first and second optical isolation unit for receiving, transmitting, and outputting signal rays in the forward direction and for suppress backward transmission of any rays; and a reflection unit for coupling to first and second optical isolation unit by directing the outputted signal ray from the first optical isolation unit to the second optical isolation unit, the signal ray received by the first optical isolation unit transmitting in the opposite direction to the outputted signal ray from the second optical isolation unit. A reflection protection unit may be provided to prevent undesired reflection at inlet of the optical isolator. A optical filter for reflecting a component having a predetermined wavelength and transmitting remaining component may be used for the reflection unit. An optical detector may be used for monitoring the remaining component. An absorber may be used for absorbing the remaining components. A half mirror may be used for the reflection unit for monitoring the signal ray.
摘要翻译： 用于向正方向传输信号线并抑制反向传输的偏振无关光隔离器包括：第一和第二光隔离单元，用于在前向方向上接收，发射和输出信号光，并抑制任何光线的反向传输; 以及反射单元，用于通过将来自第一光隔离单元的输出信号光线引导到第二光隔离单元而耦合到第一和第二光隔离单元，由第一光隔离单元接收的信号线沿与输出的相反方向发送 来自第二光隔离单元的信号线。 可以提供反射保护单元以防止光隔离器的入口处的不期望的反射。 用于反射具有预定波长的分量并传输剩余分量的滤光器可用于反射单元。 可以使用光学检测器来监视剩余部件。 可以使用吸收器来吸收剩余的组分。 反射镜可用于监测信号射线。
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公开(公告)号：US5574595A
公开(公告)日：1996-11-12
申请号：US205431
申请日：1994-03-04
申请人： Noboru Kurata , Masaaki Tojo , Hironori Souda
发明人： Noboru Kurata , Masaaki Tojo , Hironori Souda
CPC分类号： G02B6/2746 , G02F1/093 , Y10S372/703
摘要： A polarization independent optical isolator for use in optical communication systems is provided. This optical isolator functions to provide dual-way optical isolation wherein an input optical signal entering in the isolation direction is transmitted through the optical isolator twice using a reflecting member, and includes a magnetooptic plate and a birefringent plate disposed between the magnetooptic plate and the reflecting member. The birefringent plate aligns two linearly polarized optical signals in a transmitting direction, having planes of polarization rotated through a predetermined angle by the magnetooptic plate, on a given optical path with a preselected spatial displacement therebetween for allowing transmission of the optical signals traveling in the transmitting direction, while it orients two linearly polarized optical signals in the isolation direction, having planes of polarization rotated through the predetermined angle by the magnetooptic plate, out of the given optical path for blocking transmission of the optical signals traveling in the isolation direction.
摘要翻译： 提供了一种用于光通信系统的偏振无关光隔离器。 该光隔离器用于提供双向光隔离，其中进入隔离方向的输入光信号通过光隔离器使用反射构件传输两次，并且包括设置在磁光板和反射板之间的磁光板和双折射板 会员。 双折射板在给定的光路上在透射方向上对准两个具有预定角度的偏振平面的透射方向的线性偏振光学信号，其间具有预选的空间位移，以允许传输在传输 方向，同时其在隔离方向上定向两个线性偏振光信号，其具有通过磁光板旋转预定角度的偏振平面，用于阻挡在隔离方向上行进的光信号的传输。
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公开(公告)号：US5689359A
公开(公告)日：1997-11-18
申请号：US160787
申请日：1993-12-03
申请人： Noboru Kurata , Masaaki Tojo , Hironori Souda
发明人： Noboru Kurata , Masaaki Tojo , Hironori Souda
CPC分类号： G02B6/2746 , G02B6/272 , G02B6/2766 , G02B6/2937 , G02B6/4246 , G02F1/093 , G02B6/4207 , G02B6/4208 , Y10S372/703
摘要： A polarization independent optical isolator for transmitting a signal ray in a forward direction and suppressing backward transmission comprises: a first and second optical isolation unit for receiving, transmitting, and outputting signal rays in the forward direction and for suppress backward transmission of any rays; and a reflection unit for coupling to first and second optical isolation unit by directing the outputted signal ray from the first optical isolation unit to the second optical isolation unit, the signal ray received by the first optical isolation unit transmitting in the opposite direction to the outputted signal ray from the second optical isolation unit. A reflection protection unit may be provided to prevent undesired reflection at inlet of the optical isolator. A optical filter for reflecting a component having a predetermined wavelength and transmitting remaining component may be used for the reflection unit. An optical detector may be used for monitoring the remaining component. An absorber may be used for absorbing the remaining components. A half mirror may be used for the reflection unit for monitoring the signal ray.
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公开(公告)号：US5499132A
公开(公告)日：1996-03-12
申请号：US59762
申请日：1993-05-12
申请人： Masaaki Tojo , Noboru Kurata , Hironori Souda
发明人： Masaaki Tojo , Noboru Kurata , Hironori Souda
CPC分类号： G02B6/2937 , G02B5/3083 , G02B6/272 , G02F1/093 , G02B6/2746 , G02B6/2766 , G02B6/4246 , Y10S372/703
摘要： An object of the present invention is to provide an optical passive component having a polarization-independent optical isolator for constituting an optical fiber amplifier and exhibiting an optical isolator function. At least first and second optical fibers for input and output of light rays, a birefringent crystal, a lens for converting the input light rays into nearly collimated rays, a magnetooptical crystal for receiving a magnetic field so as to rotate by .pi./8+N.pi./4(n=0, 1, . . . ) the polarization direction of the input light rays, and a reflector are disposed in order. A half wave plate is provided to cover one portion of the ray path between the above described birefringent crystal and the above described lens.
摘要翻译： 本发明的目的是提供一种具有偏振无关光隔离器的光学无源元件，用于构成光纤放大器并具有光隔离器功能。 用于输入和输出光线的至少第一和第二光纤，双折射晶体，用于将输入光线转换成几乎准直的光线的透镜，用于接收磁场以便通过pi / 8 + N旋转的磁光晶体 pi / 4（n = 0,1，...）输入光线的偏振方向，反射器依次布置。 提供半波片以覆盖上述双折射晶体与上述透镜之间的光线路径的一部分。
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公开(公告)号：US5355249A
公开(公告)日：1994-10-11
申请号：US49459
申请日：1993-04-20
申请人： Hironori Souda , Masaaki Tojo , Noboru Kurata
发明人： Hironori Souda , Masaaki Tojo , Noboru Kurata
CPC分类号： G02B6/4246 , G02B6/2706 , G02B6/29367 , G02B6/4208 , H01S3/094003 , G02B6/2773 , H01S2301/02 , H01S3/067 , Y10S372/703
摘要： Optical passive components comprising: a first optical fiber for outputting pumping light; a second optical fiber for receiving the pumping light and either outputting or receiving signal light; a third optical fiber for either receiving or outputting the signal light; a wavelength selecting filter which transmits therethrough the pumping light and reflects the signal light; a mirror which reflects most of the signal light reflected by the wavelength selecting filter and transmits therethrough a portion of the signal light reflected by the wavelength selecting filter such that the wavelength selecting filter and the mirror form an optical assembly; an optical isolator which passes therethrough the signal light reflected by the mirror so as to output the signal light; and a semiconductor optical detecting device for detecting the signal light transmitted through the mirror; wherein the first, second and third optical fibers are disposed at one side of the optical assembly.
摘要翻译： 光无源部件，包括：用于输出泵浦光的第一光纤; 用于接收泵浦光并输出或接收信号光的第二光纤; 用于接收或输出信号光的第三光纤; 波长选择滤波器，其透过泵浦光并反射信号光; 反射由波长选择滤光器反射的大部分信号光，并透射由波长选择滤光器反射的信号光的一部分，使得波长选择滤光器和反射镜形成光学组件; 光隔离器，其通过反射镜反射的信号光，以输出信号光; 以及半导体光检测装置，用于检测透过反射镜的信号光; 其中所述第一，第二和第三光纤设置在所述光学组件的一侧。
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