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1. 发明专利

JPH11211941A OPTICAL MODULE 失效
公开(公告)号：JPH11211941A
公开(公告)日：1999-08-06
申请号：JP1576398
申请日：1998-01-28
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NOSAKA TAIZO , TANAKA KAZUHIRO , MIURA KAZUNORI , SAWAE SHINYA , KIKUCHI EIJI , NAKAGAWA KOJI , SASAKI MASAMI , TABUCHI HARUHIKO , FUKUDA MITSUO , ICHIKAWA FUMIO , HANAWA FUMIAKI , ISHIBASHI SHIGEKI
IPC分类号： G02B6/42 , G02B6/122 , H01L33/12 , H01L33/56 , H01L33/62 , H01L33/00
摘要： PROBLEM TO BE SOLVED: To attain the stable supply of an optical module with miniaturization, high reliability and price-down. SOLUTION: This optical module is provided with optical transmission lines 121 and 122 , first substrate 10 having optical elements 13 and 14 optically connected to one end of optical transmission lines 121 and 122 , box-shaped second substrate 20 for supporting the side of optical elements 1.3 and 14 together with the optical transmission lines 121 and 122 while defining the other end of the optical transmission lines 121 and 122 as outside, and resin flow stopping member 51 placed at the protruding position of the optical transmission lines 121 and 122 on the second substrate 20 over the optical transmission lines 121 and 122 , and the surface of the second substrate 20 is tightly covered and integrated with resin 42 while including the optical transmission lines 121 and 122 and the optical elements 13 and 14 on the first substrate 10. In this case, concerning the optical module, an interface part 51b of the flow stopping member 51 in contact with the resin 42 at a bridge part A is inclined to the other end side of the optical transmission lines 121 and 122 (the left side of a figure) rather than a surface vertical to the main side of the second substrate 20.

2. 发明专利

JPH09284735A SYSTEM FOR COMMUNICATION AMONG SCATTED SITES 失效
公开(公告)号：JPH09284735A
公开(公告)日：1997-10-31
申请号：JP9150896
申请日：1996-04-12
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KITAYAMA KOICHI , TAKASHIMA KATSUHIKO , TANIMOTO TORU , HORIGUCHI TAKENORI , NAKAGAWA KOJI
IPC分类号： G06F3/14 , G06F3/048 , H04L12/42 , H04N7/15
摘要： PROBLEM TO BE SOLVED: To improve the convenience of use of the user of an image communication terminal equipment when information relating to each image communication terminal equipment is acquired and when a screen display of a video image displayed on the image communication terminal equipment is switched in the system for communication among scattered sites where plural image communication terminal equipments are connected in a loop. SOLUTION: A touch panel 110 outputs coordinate data to an area selection section 111 by using the touch panel 110 provided overlappingly on a display section 109 to select directly a video image area displayed on the display section 109 by the user of the image communication terminal equipment displaying images on a multi-screen. The area selection section 111 based on the coordinate data gives an instruction to a control section 114 so that a video image of the image communication terminal equipment sending the video image displayed on a selected area is singly displayed. Or the area selection section 111 based on the coordinate data gives an instruction to the control section 114 so that information relating to the image communication terminal equipment sending the video image displayed on a selected area is displayed on a selected area.

3. 发明专利

JPH09200718A PICTORIAL COMMUNICATION TERMINAL AND MULTI-SPOT PICTORIAL COMMUNICATION SYSTEM 失效
公开(公告)号：JPH09200718A
公开(公告)日：1997-07-31
申请号：JP881696
申请日：1996-01-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KITAMURA KAZUO , TANIMOTO TORU , HORIGUCHI TAKENORI , NAKAGAWA KOJI
IPC分类号： H04N7/15 , H04L12/42 , H04M3/56
摘要： PROBLEM TO BE SOLVED: To enable a video conference among multiple spots by providing a means for simultaneously encoding image data displayed in plural small areas and for transmitting and receiving these encoded image data. SOLUTION: When the number of recognized terminals is not '2' at the time of loop connection or after the loop connection, the transmission of image data to a frame memory 7 for transmission is instructed to an image composition part 6 by a control part 4, it is calculated how much power of '4' the number of divided picture is and at the time of loop connection or after the loop connection, a recognized present terminal number and a value P calculated in advance are reported to an image format transforming part 9. Corresponding to the number of divided pictures, the image data for one frame transferred from an image input part 10 are respectively horizontally and vertically thinned out into 1/2, the area of the frame memory 7 for transmission corresponding to the present terminal number is detected and the image data are transferred to the detected area. Thus, the video conference, etc., using a pictorial communication system is enabled among spots more than six.

4. 发明专利

JP2014179954A Optical signal demodulation device, optical signal demodulation method, optical signal demodulation program, and optical branch insertion device 有权
标题翻译：光信号解调装置，光信号解调方法，光信号解调方案和光分路插入装置
公开(公告)号：JP2014179954A
公开(公告)日：2014-09-25
申请号：JP2013054332
申请日：2013-03-15
申请人： Fujitsu Ltd , 富士通株式会社
发明人： NAKAGAWA KOJI , SONE KYOSUKE , ODA SHOICHIRO , AOKI YASUHIKO
IPC分类号： H04B10/66
CPC分类号： H04B10/60 , H04B10/675 , H04B2210/074 , H04J14/0201
摘要： PROBLEM TO BE SOLVED: To enhance demodulation accuracy of a second signal, in an optical signal generated by superposing the second signal on a first signal by frequency modulation.SOLUTION: A wavelength variable filter 11 sweeps a transmission wavelength band on a wavelength axis by control of its center wavelength by a wavelength controller 12 to perform filtering of an optical signal. An intensity detector 13 detects an intensity of transmitted light of the wavelength variable filter 11. A power spectrum acquisition part 15 measures and acquires power spectrum of the optical signal from the intensity of the transmitted light. A peak identification part 16 identifies a peak wavelength that is a wavelength corresponding to a peak position of the power spectrum. A wavelength determination part 17 determines a demodulation target wavelength by using the peak wavelength as a reference. A demodulator 18 demodulates the second signal at a demodulation target wavelength of the optical signal.
摘要翻译：要解决的问题：提高第二信号的解调精度，在通过频率调制对第一信号叠加第二信号而产生的光信号中。解决方案：波长可变滤波器11通过控制扫描波长轴上的透射波长带的波长控制器12进行中心波长的滤波以进行光信号的滤波。强度检测器13检测波长可变滤波器11的透射光的强度。功率谱获取部15根据透射光的强度测量并获取光信号的功率谱。峰识别部16识别作为与功率谱的峰值位置对应的波长的峰值波长。波长确定部分17通过使用峰值波长作为参考来确定解调目标波长。解调器18以光信号的解调目标波长对第二信号进行解调。

5. 发明专利

JP2014075554A Variable wavelength light source and wavelength variable method 有权
标题翻译：可变波长光源和波长变化方法
公开(公告)号：JP2014075554A
公开(公告)日：2014-04-24
申请号：JP2012223594
申请日：2012-10-05
申请人： Fujitsu Ltd , 富士通株式会社
发明人： NAKAGAWA KOJI , HOSHIDA GOJI
IPC分类号： H01S5/06 , H01S5/12 , H01S5/40
CPC分类号： H01S3/2391 , H01S5/005 , H01S5/026 , H01S5/0612 , H01S5/06213 , H01S5/12 , H01S5/4012 , H01S5/4031 , H01S5/4087 , H04J14/0254 , H04J14/0265
摘要： PROBLEM TO BE SOLVED: To vary the wavelength of light output continuously over a wide range without any break of the light output.SOLUTION: A variable wavelength light source includes DFB laser arrays 102 which have mutually different variable wavelength regions and also have mutually adjacent wavelength regions allocated to different systems A, B; multiplexers 103a, 103b which multiplex light beams that arrays included in the same systems output; VOAs (Variable Optical Attenuators) 104a, 104b which transmit and cut off the light beams included in the same systems; a multiplexer 103c which multiplexes and outputs the light beams of the different systems A, B; and a control part 107 which controls driving of the DFB laser arrays 102 and VOAs 104a, 104b. The DFB laser arrays 102 are so set that an end of a variable wavelength region overlaps with a wavelength region of an end of the other light source. After selecting and driving one array of the system A to vary a wavelength and also selecting and driving one array of the system B at the end of the wavelength region simultaneously with the array of the system A, the control part 107 performs switching to light output of arrays of the system B and varies the wavelength.
摘要翻译：要解决的问题：在宽范围内连续变化光输出的波长，而不会导致光输出的任何破坏。解决方案：可变波长光源包括具有相互不同的可变波长区域并且还具有相互相邻波长的DFB激光器阵列102 分配给不同系统A，B的区域; 复用器103a，103b，其对包括在相同系统中的阵列输出进行多路复用; VOA（可变光衰减器）104a，104b，其传输和切断包括在相同系统中的光束; 多路复用器103c，其复用并输出不同系统A，B的光束; 以及控制DFB激光器阵列102和VOA 104a，104b的驱动的控制部分107。 DFB激光器阵列102被设定为使得可变波长区域的一端与另一光源的端部的波长区域重叠。在选择并驱动系统A的一个阵列以改变波长之后，并且在与系统A的阵列同时在波长区域的末端选择和驱动系统B的一个阵列，控制部分107执行切换到光输出的系统B的阵列并改变波长。

6. 发明专利

JP2012222170A Optical amplifier 有权
标题翻译：光放大器
公开(公告)号：JP2012222170A
公开(公告)日：2012-11-12
申请号：JP2011086898
申请日：2011-04-11
申请人： Fujitsu Ltd , 富士通株式会社
发明人： YOSHIDA SADAO , KINOSHITA SUSUMU , ISHIKAWA JOJI , NAKAGAWA KOJI , KAI TAKETAKA , SONE KYOSUKE , HARADA KEISUKE
IPC分类号： H01S5/50 , H01S5/068
CPC分类号： H04B10/2914 , H01S5/0078 , H01S5/0428 , H01S5/06216 , H01S5/06835 , H01S5/4087 , H01S5/5027 , H01S2301/04 , H01S2301/06
摘要： PROBLEM TO BE SOLVED: To keep waveform distortion down.SOLUTION: An optical amplifier includes a pre-stage semiconductor optical amplifying unit for amplifying input light and a subsequent-stage semiconductor optical amplifying unit for amplifying the amplified light from the pre-stage semiconductor optical amplifying unit. The pre-stage semiconductor optical amplifying unit performs output optical power constant control by variable control of driving current flowing according to applied voltage higher than the light emission threshold voltage of an internal optical amplifying element. The subsequent-stage semiconductor optical amplifying unit performs gate switching of permeation light by switching control of driving current. This allows optical communication quality to be improved by keeping waveform distortion down.
摘要翻译：要解决的问题：保持波形失真。解决方案：光放大器包括用于放大输入光的前级半导体光放大单元和用于放大来自前级半导体光放大单元的放大光的后级半导体光放大单元。前级半导体光放大单元通过根据高于内部光放大元件的发光阈值电压的施加电压流动的驱动电流的可变控制来执行输出光功率恒定控制。后级半导体光放大单元通过切换驱动电流的控制来进行渗透光的栅极切换。这允许通过保持波形失真降低来改善光通信质量。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2009224494A Optical semiconductor device 审中-公开
标题翻译：光学半导体器件
公开(公告)号：JP2009224494A
公开(公告)日：2009-10-01
申请号：JP2008066288
申请日：2008-03-14
申请人： Fujitsu Ltd , 富士通株式会社
发明人： NAKAGAWA KOJI
IPC分类号： H01S5/022
CPC分类号： H01S5/024 , G02B6/4201 , G02B6/4204 , H01S5/02208 , H01S5/02284 , H01S5/02415 , H01S5/4031 , H01S5/50
摘要： PROBLEM TO BE SOLVED: To improve transmission characteristics of outgoing light by integrally forming a first support part supporting an optical semiconductor element and a second support part supporting a lens.
SOLUTION: An optical semiconductor device 10 includes an LD 12, a lens 13, a stem 14, and an output part 16. The LD 12 emits light. The lens 13 transmits light emitted from the LD 12. The output part 16 outputs the light transmitted through the lens 13 to the outside. The stem 14 is configured so that a first support part 14a supporting the LD 12 and a second support part 14b supporting the lens 13 are integrally formed via an intermediate part 14c.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过一体地形成支撑光学半导体元件的第一支撑部件和支撑透镜的第二支撑部件来提高出射光的透射特性。解决方案：光学半导体器件10包括LD 12，透镜13，杆14和输出部分16.LD 12发光。透镜13透射从LD12发射的光。输出部16将透过透镜13的光输出到外部。杆14被构造成使得支撑LD 12的第一支撑部14a和支撑透镜13的第二支撑部14b经由中间部14c一体地形成。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2009168854A Optical isolator and semiconductor device optical system 有权
标题翻译：光学隔离器和半导体器件光学系统
公开(公告)号：JP2009168854A
公开(公告)日：2009-07-30
申请号：JP2008003663
申请日：2008-01-10
申请人： Fujitsu Ltd , 富士通株式会社
发明人： HIRONISHI KAZUO , FUKUSHIMA NOBUHIRO , NAKAGAWA KOJI
IPC分类号： G02B27/28 , G02B5/04
摘要： PROBLEM TO BE SOLVED: To suppress polarization mode dispersion and to minimize a device while avoiding crosstalk. SOLUTION: A first Faraday rotator 133 is disposed in a rear stage of a first birefringence prism 132 and rotates a polarization plane of transmitting light by about 45 degrees. A second birefringent prism 134 is disposed in a rear stage of the first Faraday rotator 133 and has an optical axis in a direction different by about 45 degrees from the optical axis of the first birefringent prism 132. A third birefringent prism 142 is disposed in a rear stage of the second birefringent prism 134, and has an optical axis in a direction different by 80 to 100 degrees from that of the second birefringent prism 134. A second Faraday rotator 143 is disposed in a rear stage of the third birefringent prism 142 and rotates a polarization plane of transmitting light by about 45 degrees. A fourth birefringent prism 144 is disposed in a rear stage of the second Faraday rotator 143 and has an optical axis in a direction different by about 45 degrees from that of the third birefringent prism 142. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：抑制偏振模色散并使装置最小化，同时避免串扰。解决方案：第一法拉第旋转器133设置在第一双折射棱镜132的后级中，并将透射光的偏振面旋转大约45度。第二双折射棱镜134设置在第一法拉第旋转器133的后级中，并且具有与第一双折射棱镜132的光轴相差大约45度的光轴。第三双折射棱镜142设置在第一双折射棱镜第二双折射棱镜134的后级，并且具有与第二双折射棱镜134的方向不同于80度至100度的光轴。第二法拉第旋转器143设置在第三双折射棱镜142的后级中，将透射光的偏振平面旋转大约45度。第四双折射棱镜144设置在第二法拉第旋转器143的后级中，并且具有与第三双折射棱镜142的光轴不同的方向的光轴。（C）2009年，JPO和INPIT

9. 发明专利

JP2008235376A Soa array optical module 有权
标题翻译： SOA阵列光模块
公开(公告)号：JP2008235376A
公开(公告)日：2008-10-02
申请号：JP2007069579
申请日：2007-03-16
申请人： Fujitsu Ltd , 富士通株式会社
发明人： NAKAGAWA KOJI
IPC分类号： H01S5/022 , H01S5/40
CPC分类号： G02B6/327 , H01S5/005 , H01S5/02216 , H01S5/02284 , H01S5/1085 , H01S5/4031 , H01S5/50
摘要： PROBLEM TO BE SOLVED: To provide an SOA array optical module using an lens array as a semiconductor optical amplification type gate switch that generates no coupling loss.
SOLUTION: A beam is emitted its central axis 47 slanted by 22.3 degrees with respect to the perpendicular line 46 of the end face of an SOA array 37 from the waveguides 36 in the respective SOA on the output side of the SOA array 37 provided with 8-channel SOA waveguide 36 (the same as the input side). First and second lens arrays 39 and 43 are arranged in the SOA array 37 so that the central axis 47 of the beam emitted obliquely with an angle of 22.3 degrees from the SOA array 37 may be coincided with the optical axis of the lens convex 38 of the respective channels of the first lens array 39 and that of the lens convex 42 of the respective channels of the second lens array 43. A step is provided on the opposite sides of the convexes 38 and 42 of the first and second lens arrays 39 and 43 so that it may be nearly vertical to the central axis 47 of the incident beam of the SOA waveguide 36.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种使用透镜阵列作为不产生耦合损耗的半导体光放大型栅极开关的SOA阵列光学模块。解决方案：从SOA阵列37的输出侧的相应SOA中的波导36相对于SOA阵列37的端面的垂直线46倾斜22.3度的中心轴47的中心轴47。提供8通道SOA波导36（与输入端相同）。第一和第二透镜阵列39和43布置在SOA阵列37中，使得与SOA阵列37以22.3度的角度倾斜地发射的光束的中心轴线47可以与透镜凸起38的光轴第一透镜阵列39的各个通道和第二透镜阵列43的各个通道的透镜凸起42的通道。在第一和第二透镜阵列39的凸部38和42的相对侧上设置有台阶， 43，使得其可以几乎垂直于SOA波导36的入射光束的中心轴线47.版权所有：（C）2009，JPO＆INPIT

10. 发明专利

JP2004289638A Wavelength division multiplex processing apparatus 审中-公开
公开(公告)号：JP2004289638A
公开(公告)日：2004-10-14
申请号：JP2003080892
申请日：2003-03-24
申请人： Fujitsu Ltd , 富士通株式会社
发明人： NAKAGAWA KOJI , MIYATA HIDEYUKI , ONAKA HIROSHI
IPC分类号： G02B6/12 , H04B10/27 , H04B10/29 , H04J14/00 , H04J14/02 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To provide a wavelength division multiplex processing apparatus which is miniaturized, can reduce a loss and can reduce costs. SOLUTION: The wavelength division multiplex processing apparatus includes a wavelength multiplexer/demultiplexer 21 for dividing a wavelength division multiplex optical signal that is inputted from a first input waveguide side port, into wavelength signals of respective wavelengths for emission from different positions, emitting a wavelength signal that is inputted from a second input waveguide side port, of a wavelength to be addressed from a position corresponding to the wavelength, multiplexing the wavelength signals of the respective wavelengths incident from an optical switch array for each of different positions for outputting from the first input waveguide side port, and outputting a wavelength signal of a wavelength to be dropped from the second input waveguide side port, and an optical switch array 60 for selectively switching directions in accordance with the wavelength signals of the respective wavelengths emitted from the different positions of the wavelength multiplexer/demultiplexer, and making the signals incident to different positions of the wavelength multiplexer/demultiplexer. COPYRIGHT: (C)2005,JPO&NCIPI

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