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91. 发明专利

JP2000101103A OPTICAL INTERCONNECTION DEVICE 失效
公开(公告)号：JP2000101103A
公开(公告)日：2000-04-07
申请号：JP26935798
申请日：1998-09-24
申请人： HITACHI LTD , REAL WORLD COMPUTING PARTNERSH
发明人： NISHIMURA SHINJI
IPC分类号： G02B6/00 , G02B6/42 , H01L31/0232 , H01S5/00 , H01S5/42 , H04B10/25 , H04B10/27 , H04B10/80 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To miniaturize the occupancy area on a mounting substrate and to considerably miniaturize a device, without substantial changes in the mounting method for enlarging the capacity of an optical interconnection device and miniaturizing it. SOLUTION: Array-type elements are not vertically arranged but are arranged vertically for reducing the mounting area of the elements which are array- arranged. Ten to twenty array-type elements are arranged vertically in one group. A light signal is transmitted through an optical fiber ribbon 1 in the direction of input 7 and is converted into an electrical signal by a photodiode in a reception module 2. It is switching-processed by a processor 3, then the electric signal is converted into an optical signal by a transmission module 4 and is transmitted through an optical fiber ribbon 5 in the direction of an output 8.

92. 发明专利

JPH1195068A OPTICAL MODULE MOUNTING BOARD 失效
公开(公告)号：JPH1195068A
公开(公告)日：1999-04-09
申请号：JP25045097
申请日：1997-09-16
申请人： HITACHI LTD , REAL WORLD COMPUTING PARTNERSH
发明人： SHIGETA JUNJI , NISHIMURA SHINJI , INOUE HIROAKI
IPC分类号： G02B6/42 , G02B7/00 , H01L31/0232 , H01L33/48 , H01L33/00
摘要： PROBLEM TO BE SOLVED: To freely determine the distributed positions of optical fibers without coming in contact with heating parts such as LSIs by distributing the optical fibers, connected to optical modules so as to transmit optical signals, on a different face (back face) from an LSI mounted face (surface). SOLUTION: LSIs 2 are arranged between transmitting optical modules 3 and receiving optical modules 4, and optical fiber connectors 6. The transmitting optical modules 3, receiving optical modules 4, optical fiber connectors 6 and optical fibers 5 are respectively mounted on the opposite face (back face) to the LSIs 2 of a printed board 1. It is therefore so constituted that heating parts such as the LSIs 2 do not exist between the optical fiber connectors 6 and the transmitting optical modules 3 and receiving optical modules 4, so that the optical fibers 5 can be distributed in a free path such as a shortest path.

93. 发明专利

JPH10214981A OPTICAL SOCKET 失效
公开(公告)号：JPH10214981A
公开(公告)日：1998-08-11
申请号：JP1802697
申请日：1997-01-31
申请人： HITACHI LTD , GIJUTSU KENKYU KUMIAI SHINJOHO
发明人： NISHIMURA SHINJI , INOUE HIROAKI , SHIGETA JUNJI
IPC分类号： G02B6/42 , H01L31/0232 , H01L33/00 , H01L33/62 , H01S5/00 , H04B10/27 , H04B10/80 , H01S3/18 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To realize an optical socket which can shorten an electric wiring length, which is favorable for the high band of a signal, which can reduce a band limitation cause due to a pin bottleneck with reference to a replacement function desiring a high-speed processing operation, whose versatility as a replacement element is high and which is low-cost. SOLUTION: A photodetector 14 for data transmission-reception, a semiconductor laser 15, a control circuit for them, an electronic circuit which shares a replacement function and space optical-path changeover-type switches 18, 19 are mounted inside an IC socket 11a for electronic-circuit mounting, and the signal processing capability of an optical socket is intensified. A data output from the electronic circuit is converted into a light signal by a signal conversion immediately after a pin so as to be output to optical fibers 12.

94. 发明专利

JPH09237942A SURFACE LIGHT EMITTING SEMICONDUCTOR LASER, OPTICAL TRANSMISSION/RECEPTION MODULE USING THE LASER AND PARALLEL INFORMATION PROCESSOR USING THE LASER 失效
公开(公告)号：JPH09237942A
公开(公告)日：1997-09-09
申请号：JP34112096
申请日：1996-12-20
申请人： HITACHI LTD
发明人： KONDO MASAHIKO , NISHIMURA SHINJI , SHINODA KAZUNORI , UOMI KAZUHISA
IPC分类号： H01L27/15 , B82Y10/00 , B82Y20/00 , H01S5/00 , H01S5/026 , H01S5/10 , H04B10/00 , H04B10/40 , H04B10/50 , H04B10/60 , H01S3/18 , H04B10/02 , H04B10/28
摘要： PROBLEM TO BE SOLVED: To provide a surface light emitting semiconductor laser containing a reflector that achieves high reflectance with a smaller number of laminations, and further, in a practical long-wave-band. SOLUTION: Gallium arsenide is used for material of a substrate 1, and a semiconductor multilayer film reflector 2 is formed between the substrate and an active layer 4. Aluminum, indium and phosphorus mainly constitute the low-refractive-index layer of the semiconductor multilayer film reflector 2, and the lattice of the low-refractive- index layer matches that of the substrate. Gallium, indium, nitrogen and arsenic are the elements mainly constituting the high-refractive-index layer of the reflector 2. Gallium arsenide is used for a substrate 1. Gallium, indium, nitrogen and arsenic mainly constitute an active layer 4 formed on the substrate. A semiconductor multilayer film reflector 2, the lattice of which matches that of the substrate 1, is placed between the active layer 4 and the substrate 1. This makes it possible to use the laser over a wide range of optical application systems, including optical transmission/reception modules (optical interconnection devices), parallel information processors, and optial fiber communication systems.

95. 发明专利

JPH07142386A SEMICONDUCTOR SUBSTRATE, SEMICONDUCTOR DEVICE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH07142386A
公开(公告)日：1995-06-02
申请号：JP28786793
申请日：1993-11-17
申请人： HITACHI LTD , HIKARI GIJUTSU KENKYU KAIHATSU
发明人： TANAKA SHIGEHISA , NISHIMURA SHINJI , TAKANO HIDEAKI
IPC分类号： H01L21/20 , H01L21/02 , H01L27/12 , H01L27/15
摘要： PURPOSE:To provide a highly reliable semiconductor substrate which is free from characteristic deterioration and wherein two kinds of semiconductor substrates of different material qualities are bonded each other. CONSTITUTION:The title semiconductor substrate is formed by bonding an Si substrate 2 which is a first semiconductor substrate and a second semiconductor substrate (an InP substrate 3, a GaAs substrate 4) whose material quality differs from that of the substrate 2 by a thin film layer of a layer-like substance wherein layers are bonded each other by van der Waals force like GaSe 1, and a proper semiconductor element is provided on each substrate. As the thin film layer, layer-like chalcogen compound such as GaS, MoS2, MoSe2 or Se, Te, etc., are used in addition to the GaSe 1.

96. 发明专利

JPH06310426A QUANTUM WIRE STRUCTURE 失效
公开(公告)号：JPH06310426A
公开(公告)日：1994-11-04
申请号：JP9407793
申请日：1993-04-21
申请人： HITACHI LTD
发明人： TANAKA SHIGEHISA , NISHIMURA SHINJI
IPC分类号： H01L21/20 , H01L29/06 , H01L29/80 , H01L29/804
摘要： PURPOSE:To reduce fluctuations caused by a surface reconstruction, by using a semiconductor substrate made of III-V and II-V compound semiconductors and using the off-substrate thereof, and by making the plane orientation of the semiconductor substrate (100) plane. CONSTITUTION:A quantum fine line structure comprising a GaAs growth layer 2 and an AlGaAs growth layer 3 is formed on a GaAs (110) substrate 1. The substrate 1 is inclined by a proper angle with suspect to the[111]direction. The present quantum fine line structure is so formed that on the substrate 1, GaAs and AlGaAs are made to grow alternately by an organometallic vapor phase epitaxy or by a molecular beam epitaxy. Here, the direction wherein the quantum wire is formed in the direction equivalent to the [110] or the [100] direction. Also, the composition ratio of Al to AlGaAs is an arbitrary value which is larger than 0 and not larger than 1. Thereby, the quantum wire structure wherein a little fluctuation of the side of the quantum wire is present can be obtained.

97. 发明专利

JPH0688980A OPTICAL FREQUENCY CONVERSION ELEMENT 失效
公开(公告)号：JPH0688980A
公开(公告)日：1994-03-29
申请号：JP23925692
申请日：1992-09-08
申请人： HITACHI LTD
发明人： NISHIMURA SHINJI , INOUE HIROAKI , SANO HIROHISA , KANEKO TADAO , UCHIYAMA HIROYUKI
IPC分类号： G02F2/02
摘要： PURPOSE:To provide the optical frequency conversion element which is driven on a low voltage, is wide in band, high in efficiency and is non-dependent on incident and exit polarized light and the modulation form of signals by using s an optical waveguide structure formed by using a compd. semiconductor which can equivalently attain a phase plate rotating frequency conversion system capable of attaining conversion efficiency of 100% theoretical efficiency regardless of the modulation form of the input signals in optical frequency conversion with the electrooptical effect of the crystal and is advantageous for optical integration. CONSTITUTION:This optical frequency conversion system is constituted by adopting the element constitution to constitute the optical waveguide having the [1, 1, 1] directions of the compd. semiconductor, such as GaAs or InP having tri-symmetrical axes as the propagation direction and to impress a rotating electric field within the plane perpendicular to the propagation direction and further connecting the element in series. As a result, the effect equiv. to the effect of the phase plate rotating frequency conversion system is obtd. by using the electrooptical effect advantageous for high-speed modulation. The above- mentioned frequency conversion is thus possible.

98. 发明专利

JP2006109026A Optical signal communication equipment 审中-公开
标题翻译：光信号通信设备
公开(公告)号：JP2006109026A
公开(公告)日：2006-04-20
申请号：JP2004292058
申请日：2004-10-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NISHIMURA SHINJI
IPC分类号： H04L9/08 , H04B10/556 , H04B10/85
CPC分类号： H04L9/0891 , H04L2209/08
摘要： PROBLEM TO BE SOLVED: To provide optical signal communication equipment by which one encryption circuit is shared by a plurality of data transmission circuits. SOLUTION: An optical signal transmitter for encryption and an optical signal receiver for encryption using optical multiple value transmission at high cost and in which effective improvement of a transmission rate is difficult are used only for exchange of encryption keys and data to be actually transmitted is transmitted by another line. After executing communication of the encryption key by a receiver for encryption transmission prior to data transmission, a data signal is transmitted by using the exchanged encryption key and a high speed signal transmission line of another system in an encryption transmission circuit. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供由多个数据传输电路共享一个加密电路的光信号通信设备。解决方案：用于加密的光信号发送器和用于以高成本进行光多值传输的加密的光信号接收器难以有效地提高传输速率，仅用于交换加密密钥和数据实际上发送的是另一条线路。在数据发送之前，通过接收机执行用于加密传输的加密密钥的通信之后，通过在加密传输电路中使用交换的加密密钥和另一系统的高速信号传输线来发送数据信号。版权所有（C）2006，JPO＆NCIPI

99. 发明专利

JPH1197718A OPTICAL MODULE COOLER 失效
公开(公告)号：JPH1197718A
公开(公告)日：1999-04-09
申请号：JP25045197
申请日：1997-09-16
申请人： HITACHI LTD , REAL WORLD COMPUTING PARTNERSH
发明人： SHIGETA JUNJI , NISHIMURA SHINJI , INOUE HIROAKI
IPC分类号： G02B6/42 , H01L23/36 , H01L23/427 , H01L31/02
摘要： PROBLEM TO BE SOLVED: To restrain unevenness of signal transmission characteristics of respective optical modules and stabilize performance of an electronic computer board or the like using optical modules. SOLUTION: In this optical module cooler 7, optical modules 3 and 4 are connected by a thermal conductor having an excellent thermal conductivity, thus realizing a uniform temperature of the optical modules 3 and 4. Also, a radiation fin (8) and a heat pipe are provided on this thermal conductor to improve the radiation characteristic. Thus, generation of the difference in rising temperature of the optical modules 3 and 4 due to the difference in calorific value of the optical modules 3 and 4 or the like can be avoided, and unevenness of signal transmission characteristics of the optical modules 3 and 4 can be restrained.

100. 发明专利

JPH0961765A TIME LENS FOR FREQUENCY CONTROL LIGHT SIGNAL AND LIGHT SIGNAL PROCESSOR 失效
公开(公告)号：JPH0961765A
公开(公告)日：1997-03-07
申请号：JP21691495
申请日：1995-08-25
申请人： HITACHI LTD , GIJUTSU KENKYU KUMIAI SHINJOHO
发明人： NISHIMURA SHINJI , INOUE HIROAKI
IPC分类号： G02F1/025
摘要： PROBLEM TO BE SOLVED: To provide a time lens for a frequency control light signal having sufficient efficiency and performance without requiring intricate and large-scale device constitution and without impairing the high speed and large capacity of the light signals and a light signal processor. SOLUTION: An optical frequency conversion element of a semiconductor waveguide type applying a half-wavelength plate rotation system is used for a light frequency sweeping section 1 for applying a distribution to the wavelength component of an input signal pulse train. The waveguide consisting of a semiconductor quantum well structure is used as a refractive index dispersion medium 2. The light frequency converter of the half-wavelength plate system used for the optical frequency sweeping section 1 is capable of embodying frequency conversion of efficiency 100% independ on the modulation speed and modulation system of the input signals. The waveguide applying the quantum wells used as the high-refractive index dispersion medium 2 is capable of embodying the refractive index dispersion extremely higher than that of the conventional materials. Consequently, the highly efficient time lens is embodied.

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