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公开(公告)号：JPS61118732A
公开(公告)日：1986-06-06
申请号：JP24005484
申请日：1984-11-14
Applicant: Nec Corp
Inventor： FUJIWARA MASAHIKO
CPC classification number: G02F3/026
Abstract: PURPOSE:To obtain an optical bistable semiconductor element which operates even with a high-speed light signal by forming a light emitting element on the same substrate with an optical bistable semiconductor laser which has a current unapplied area and a current applied area in a resonator closely to the current unapplied area. CONSTITUTION:The DH substrate formed by laminating an n-InP buffer layer 11, an InGaAsP active layer 12, and a p-InP clad layer 13 on an n-InP substrate 10 is etched to form a wafer. Then, the 1st p-InP current block layer 14, the 2nd n-InP current block layer 15, a p-InP buried layer 16, and a p-InGaAsP cap layer 17 are formed successively and two grooves 22 and 23 for forming a mesa stripe 20 converting the active layer 12 are formed at a wide part 24 and a narrow part 25. The current blocks are not grown on the stripe 20 at the wide part 24 as shown in figure (b), but as shown at the in figure (c) at the narrow part 25. Then, Cd is diffused at part 29 of a flat part close to the narrow part 25 to form a current path penetrating the current block layers 14 and 15, the cap layer 17 of AuZn is formed thereafter, and electrodes 26, 27, 30, and 28 are stuck.
Abstract translation: 目的：为了获得光双稳态半导体元件，通过在同一基板上形成发光元件，即可利用高速光信号进行操作，该光双稳态半导体激光器在谐振器中具有电流未应用区域和电流施加区域 到目前未应用的地区。 构成：蚀刻在n-InP衬底10上层叠n-InP缓冲层11，InGaAsP有源层12和p-InP覆盖层13而形成的DH衬底，形成晶片。 然后，依次形成第一p-InP电流阻挡层14，第nnInP电流阻挡层15，p-InP掩埋层16和p-InGaAsP覆盖层17，并且形成两个槽22和23， 转换有源层12的台面条20形成在宽的部分24和窄部分25处。如图（b）所示，当前块在宽的部分24处不在条纹20上生长，但是如图 然后，Cd在靠近窄部25的平坦部分的部分29处扩散，形成穿过当前阻挡层14和15的电流路径，形成AuZn的覆盖层17 此后，电极26,27,30和28被卡住。
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公开(公告)号：JPS5945641A
公开(公告)日：1984-03-14
申请号：JP15545882
申请日：1982-09-07
Applicant: Nec Corp
Inventor： FUJIWARA MASAHIKO
CPC classification number: G11B7/12
Abstract: PURPOSE:To realize the isotropy of beam forms with a simple constitution, by making the beams given from plural lasers incident to a prism in the form of parallel beams and with different incident angles and forming the output beams into plural spots on a disk via a multiplexing optical system. CONSTITUTION:The beasm sent from two laser diodes 21a and 21b and having the same polarizing direction and different waveforms are set in parallel to each other through collimator lenses 23a and 23b to be made incident to a prism 25 with different incident angles. The output beams 26a and 26b pass through a polarized beam splitter 27, a lambda/4 plate 28 and reflector 29 with a larger difference of angles than that of incident beams and form two light spots separate from each other to a track 32 on a disk medium 31 through a focusing lens 30. Thus the informatin is recorded and reproduced. With use of a prism 25, the distance can be reduced between lenses 23a and and 23b and the beam splitter 27 to realize the isotropy of beams. Furthermore the constitution can be simplified owing to use of just a single prism 25.
Abstract translation: 目的：通过简单的结构实现波束形状的各向同性，通过使来自多个激光器的光束以平行光束的形式入射到棱镜并具有不同的入射角度，并将输出光束经由盘 复用光学系统。 构成：从两个激光二极管21a和21b发出的具有相同偏振方向和不同波形的光束通过准直透镜23a和23b彼此平行地设置成入射到具有不同入射角的棱镜25。 输出光束26a和26b通过偏振分束器27，λ/ 4板28和反射器29，其角度差异大于入射光束的角度，并形成彼此分离的两个光点到盘上的轨道32 介质31通过聚焦透镜30.因此信息记录被记录和再现。 利用棱镜25，透镜23a和23b与分束器27之间的距离可以减小，以实现光束的各向同性。 此外，由于仅使用单个棱镜25，因此可以简化构造。
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公开(公告)号：JPS5758106A
公开(公告)日：1982-04-07
申请号：JP13336880
申请日：1980-09-25
Applicant: Nec Corp
Inventor： OOTA YOSHINORI , FUJIWARA MASAHIKO
CPC classification number: G02F1/0955
Abstract: PURPOSE:To array a layer easily at low cost and with high precision by forming an optical waveguide medium by using a magnetooptical material, by connecting the circumference of the optical waveguide whose top surface is covered with a metallic film to an optical waveguide covered with the medium having the same refractivity in a light transmission direction, and by applying a magnetic field in the direction. CONSTITUTION:On, for example, a GdGa garnet crystal substrate 1, a magnetooptical crystal layer 2 of YFE garnet, etc., formed by epitaxial growth and worked in a channel shape is provide. The crystal layer 2 is covered partially with a material 3c having the same refractivity with the substrate 1, and while the top surface of the remainder is in contact with a metallic film 4, and the flanks are in contact with materials 3a and 3b having the same refractivity with the substrate 1. The layer is magnetized in the transmission direction of light by an external magnetic field 5. So that a TE wave 7 incident to the crystal layer 2 is emitted at an emission terminal 6 after 45 deg. Faraday rotation, the length L is set, and consequently light returning by being reflected by the outside is a TM wave, which is absorbed by the electrode 4. Consequently, the material is arrayed easily at low cost and with high precision.
Abstract translation: 目的：通过使用磁光材料形成光波导介质，通过将顶表面被金属膜覆盖的光波导的周边连接到覆盖有光波导的光波导，以低成本且高精度地容易地排列层 介质在透光方向上具有相同的折射率，并且沿该方向施加磁场。 构成：例如，提供GdGa石榴石晶体基板1，YFE石榴石等的磁光晶体层2，其通过外延生长形成并以通道形状加工。 晶体层2被部分地覆盖与基板1具有相同折射率的材料3c，而其余部分的顶表面与金属膜4接触，并且侧面与材料3a和3b接触，材料3a和3b具有 与基板1具有相同的折射率。该层通过外部磁场5在光的透射方向上被磁化。使得入射到晶体层2的TE波7在发射端子6之后在45度之后被发射。 法拉第旋转，长度L被设定，因此被外部反射的光返回是由电极4吸收的TM波。因此，材料以低成本和高精度易于排列。
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公开(公告)号：JP2002269282A
公开(公告)日：2002-09-20
申请号：JP2001063344
申请日：2001-03-07
Applicant: NEC CORP
Inventor： TAJIRI TOMOKO , FUJIWARA MASAHIKO , ISHIKAWA YUKIO
IPC: G06Q50/10 , G06Q20/00 , G06Q20/10 , G06Q20/12 , G06Q40/00 , G06Q40/02 , G06Q40/04 , G06Q50/00 , G06Q50/34 , G06F17/60
Abstract: PROBLEM TO BE SOLVED: To enable an applicant to bet by a bank account already possessed by the applicant by reducing the amount of time from application of registering until the applicant is registered as a regular member. SOLUTION: Betting member application information input from an application terminal device 300 is examined by an application accepting device 100, and in the case of an applicant to be registered, a member number and a temporary password are given, log-in authentication is performed by the member number and the temporary password, and after log-in authentication, a new password is registered in an application accepting device 100. After that, collation for the contents of the application and member authentication are performed to assign a betting ID to the applicant, and the personal identification number of the applicant is registered in the application accepting device 100. After that, the authentication for the betting ID input from the application terminal device 300 and the personal identification number is performed by the application accepting device 100. After authentication, a bank name, a branch office name, an account number, a sum of money of payment of the applicant are input from the application terminal device 30, and transferred to the application accepting device 100. After the bank name is checked, bank account transfer processing is conducted.
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公开(公告)号：JP2001007463A
公开(公告)日：2001-01-12
申请号：JP17876699
申请日：1999-06-24
Applicant: NEC CORP
Inventor： HOJO SAKAE , ODA MIKIO , SHIMADA YUZO , ITO MASATAKA , KANAYAMA YOSHINOBU , FUJIWARA MASAHIKO
Abstract: PROBLEM TO BE SOLVED: To obtain a substrate on which an optical waveguide section and an electrical wiring section can be mounted three-dimensionally in a mixed state and the cost of which can be reduced. SOLUTION: A substrate for mixedly mounting optical and electrical parts is provided with a fine electrical wiring section composed of an electric insulating layer 4, and fine copper wiring 5 and an optical waveguide section composed of an optical waveguide clad layer 6 and an optical waveguide core layer 7. The insulating layer 4 of the fine electrical wiring section and the clad layer 6 and core layer 7 of the optical waveguide section are composed of a photosensitive resin the refractive index of which varies depending upon the quantity of exposed light. Since the layers 4, 6, and 7 are made of the same material in the above-mentioned way, the electrical wiring section and optical waveguide section can be formed in the same process and can be mounted three- dimensionally on the substrate in a mixed state and the cost of the substrate can be reduced.
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Patent Agency Ranking
公开(公告)号：JP2001004853A
公开(公告)日：2001-01-12
申请号：JP17709499
申请日：1999-06-23
Applicant: NEC CORP
Inventor： KANAYAMA YOSHINOBU , ITO MASATAKA , FUJIWARA MASAHIKO , HOJO SAKAE , ODA MIKIO , SHIMADA YUZO
Abstract: PROBLEM TO BE SOLVED: To provide a structure for shielding at least an optical element from the outside air at a low cost by providing such a structure that an optical waveguide upper clad covers the optical element to shield it from the outside structure. SOLUTION: In the manufacturing process of this optical module, a ceramic substrate 1 having an electric wiring 2 in the inner part is formed. The part for forming an optical waveguide lower clad 3 is formed by etching or the like. The optical waveguide lower clad 3 is then formed. A polymer optical waveguide core 4 is successively formed. An optical element 6 is mounted so that its optical axis is matched to the formed polymer optical waveguide core 4, and an electric element 7 is also mounted. Finally, a polymer optical waveguide material is applied to form a polymer optical waveguide upper clad 5, and a structure for shielding the optical element 6 and the electric element 7 from the outside air is formed. According to this, since the manufacture of the polymer optical waveguide upper clad 5 is simultaneously performed with the airtight sealing of the optical element 6 and the electric element 7 by use of the same member, the manufacturing process can be simplified.
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公开(公告)号：JPH06303656A
公开(公告)日：1994-10-28
申请号：JP8901593
申请日：1993-04-16
Applicant: NEC CORP
Inventor： SHIRAGAKI TATSUYA , FUJIWARA MASAHIKO
Abstract: PURPOSE:To attain efficient package by constituting the optical switch network without use of an optical branching device and an optical confluent device having been used to compensate unequality of inter-node traffic, thereby eliminating input terminals and output terminals of the undesired optical branching device and optical confluent device. CONSTITUTION:Plural optical switch network in which an optical switch 101 is arranged to an input side and a matrix optical switch 103 is arranged to an output side, an output of each matrix optical switch 101 is given to a different matrix optical switch 102, an input of each matrix optical switch 102 is connected to the matrix optical switch 101 of a different path and an output of the matrix optical switch 102 is connected to the matrix optical switch 103 of a different path and an input of the matrix optical switch 103 is connected to the different matrix optical switch 102 are connected in parallel and at least an optical transmission line from each path is connected to each optical switch network.
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公开(公告)号：JPH04332828A
公开(公告)日：1992-11-19
申请号：JP10228191
申请日：1991-05-08
Applicant: NEC CORP
Inventor： KURIYAMA TOSHIHIDE , FUJIWARA MASAHIKO
Abstract: PURPOSE:To realize a variable wavelength filter required for wavelength multiple communication technology using an optical fiber at a low cost by means of a silicon actuator and optical fibers formed with a mirror on an end face. CONSTITUTION:In a variable wavelength filter which varies wavelength of transmitting light by varying resonant geometric length of Fabry-Perot etalon, one of two optical fibers 1 formed with a mirror at an end face is provided on a groove formed at a silicon part 4 which is electrostatically driven, whereby resonant geometric length of the etalon formed of two optical fibers is varied.
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公开(公告)号：JPH02272897A
公开(公告)日：1990-11-07
申请号：JP9454889
申请日：1989-04-13
Applicant: NEC CORP
Inventor： KAJITANI SHUNICHI , FUJIWARA MASAHIKO
Abstract: PURPOSE:To constitute a reception terminal equipment having plural outputs through the use of one photoelectric converter by providing a selecting circuit to time-serially select plural arbitrary signals among plural optical signals in the time of one bit of the optical signal outputted from an optical branching device and to output the optical signal to be time-division multiplexed. CONSTITUTION:As selecting circuits (3-1)-(3-m), optical matrix switches in a tree constitution where a connected condition can be switched at the high speed, are used. The selecting circuits (3-1)-(3-m) input the optical signals outputted from the optical branching devices (2-1)-(2-n), select plural arbitrary signals out of plural optical signals time-serially by switching them at the high speed in the time of one bit and output the signal to be time-division-multiplexed. Thus, since the time division multiplexed signal can be generated by selecting plural optical signals and, simultaneously, can be made as the optical signal as it is when photoelectric converters (5-1)-(5-m) and time division separating circuits (6-1)-(6-m) are provided, light receiving terminals (7-1)-(7-m) having plural outputs can be composed by using one photoelectric converter.
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公开(公告)号：JPH02181731A
公开(公告)日：1990-07-16
申请号：JP182489
申请日：1989-01-06
Applicant: NEC CORP
Inventor： FUJIWARA MASAHIKO , SUZUKI SHUJI , NISHIMOTO YUTAKA , KAJITANI SHUNICHI
Abstract: PURPOSE:To obtain the optical speech path which has no switch losses and with which the output level does not depend on the polarization state of incident light by subjecting plural LD optical amplifiers to optical cascade connection on both sides of optical matrix switches by intersecting the polarization directions to be mainly amplified orthogonally with each other. CONSTITUTION:The space divided optical exchange system connected with the optical matrix switches 1a, 1b and 1c, 1d on both sides of an optical inter-stage connection circuit 2 is constituted by connecting the respective input and output sides to the semiconductor laser type (LD) optical amplifiers 41, 42 via a single mode fiber (SMF) array 3a and SMDs 31, 3c and 32 when the speech path to connect the switches 1a, 1c is selected. These amplifiers 41, 42 are provided by intersecting the respectively polarization directions to be mainly amplified orthogonally with each other. The polarization state of the input light signal is preserved as it is in the switches 1a, 1c of this constitution and the switch operation is obtd. without depending on the polarization state of the input light signal as a whole. The level fluctuation of the output light is thus prevented. Since the immediate interaction of both the amplifiers on each other is prevented by the intervention of both the switches, the stable operation is assured while the gain is obtd.
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