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1. 发明专利

JP2005222083A Optical pulse generating apparatus and method for generating optical pulse 审中-公开
标题翻译：光学脉冲发生装置和产生光学脉冲的方法
公开(公告)号：JP2005222083A
公开(公告)日：2005-08-18
申请号：JP2005116374
申请日：2005-04-14
申请人： Kddi Corp , Kddi株式会社 , Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SHIMIZU KATSUHIRO , MIZUOCHI TAKASHI , KOMIYA TAKESHI , MATSUSHITA KIWAMU , KITAYAMA TADAYOSHI , SUZUKI MASATOSHI , TAGA HIDENORI , YAMAMOTO SHU , EDAKAWA NOBORU , MORITA ITSURO
IPC分类号： G02F1/017 , G02F1/015
摘要： PROBLEM TO BE SOLVED: To obtain an optical pulse position detection circuit which detects the pulse position without using a complicated operational circuit. SOLUTION: The pulse generator includes: a light source 26 to output an optical signal; an oscillator 5 to output an electric clock signal; a first optical modulator 3a to modulate the intensity of the optical signal by the electric clock signal; a phase shifter 4 to shift the phase of the electric clock signal; a second optical modulator 3b to modulate the intensity of the optical signal from the first optical modulator by the phase-shifted electric clock signal; an optical demultiplexer 2 to demultiplex the output of the second optical modulator; an photodetector 8 to convert the demultiplexed optical signal into an electric signal; a dither signal generating circuit 11 to output a dither signal; a phase comparator 12 to synchronously detect the output of the photodetector and the dither signal; and a phase shifter controlling circuit 9 to control the phase shift degree of the phase shifter. The phase shifter control circuit receives the dither signal and the output of the phase comparator and controls the phase shifter to maximize the output of the photodetector. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：获得在不使用复杂的操作电路的情况下检测脉冲位置的光脉冲位置检测电路。
解决方案：脉冲发生器包括：光源26，用于输出光信号; 振荡器5，输出电时钟信号; 第一光调制器3a，用于通过电时钟信号调制光信号的强度; 移相器4，用于移位电时钟信号的相位; 第二光调制器3b，用于通过相移电时钟信号来调制来自第一光调制器的光信号的强度; 光解复用器2，用于对第二光调制器的输出进行解复用; 用于将解复用的光信号转换为电信号的光电检测器8; 抖动信号发生电路11输出抖动信号; 相位比较器12，用于同步检测光检测器的输出和抖动信号; 以及用于控制移相器的相移程度的移相器控制电路9。移相器控制电路接收抖动信号和相位比较器的输出，并控制移相器以使光电检测器的输出最大化。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2004104385A Optical transmission system, optical transmission apparatus, and method for them 审中-公开
公开(公告)号：JP2004104385A
公开(公告)日：2004-04-02
申请号：JP2002262337
申请日：2002-09-09
申请人： Kddi Submarine Cable Systems Inc , Mitsubishi Electric Corp , ケイディディアイ海底ケーブルシステム株式会社 , 三菱電機株式会社
发明人： MORITA ITSURO , TSURITANI TAKEHIRO , AGATA AKIRA , EDAKAWA NOBORU
IPC分类号： H04B10/61 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/524 , H04B10/54 , H04B10/60 , H04B10/04 , H04B10/02 , H04B10/06 , H04B10/142 , H04B10/152
CPC分类号： H04B10/508 , H04B10/505 , H04B10/506 , H04B10/5162 , H04B10/5165
摘要： PROBLEM TO BE SOLVED: To provide an optical transmission system, an optical transmission apparatus, and a method for them for using a CS-RZ signal in a narrower band.
SOLUTION: A laser diode (LD) 12 outputs a continuous light (CW light) with a wavelength λs (frequency f0). A CS-RZ pulse train forming apparatus 14 generates a CS-RZ optical pulse train with a bit rate B from a CW output light from the LD 12. A data modulator 16 applies intensity modulation to the output optical pulse train of the apparatus 14 according to data D to be transmitted. An optical band pass filter 18 transmits a component of the carrier frequency (f0) and a component with a frequency f1(=f0+B/2) as they are, and transmits a component with a frequency f2 (=f0-B/2) while slightly leaving it, out of output lights of the data modulator 16.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2004260461A Optical receiver and reception method 审中-公开
公开(公告)号：JP2004260461A
公开(公告)日：2004-09-16
申请号：JP2003047970
申请日：2003-02-25
申请人： Kddi Submarine Cable Systems Inc , Mitsubishi Electric Corp , ケイディディアイ海底ケーブルシステム株式会社 , 三菱電機株式会社
发明人： MORITA ITSURO , TSURITANI TAKEHIRO , AGATA AKIRA , EDAKAWA NOBORU
IPC分类号： H04B10/2507 , H04J14/00 , H04J14/02 , H04B10/02 , H04B10/18
摘要： PROBLEM TO BE SOLVED: To provide an optical receiver and reception method capable of effectively suppressing interference between the adjacent channels of wavelength division multiplex.
SOLUTION: The wavelength division multiplex signal light beams (WDM signal light beams) of signal wavelengths λ1-λn outputted from an optical transmission terminal station 10 are propagated through an optical transmission line 12 and inputted to an optical reception terminal station 14. A WDM demultiplexer 20 demultiplexes the WDM signal light beams from the optical transmission line 12 into the signal light beams of the respective wavelengths λ1-λn. An OTDM demultiplexer 22 demultiplexes the signal light beam of the signal wavelength λ2 demultiplexed in the demultiplexer 20 into a plurality of signal light beams of a lower bit rate and impresses the respective ones to optical band-pass filters 24-1 to 24-4. The optical band-pass filters 24-1 to 24-4 transmit both of side bands generated by down conversion by the demultiplexer 22 and interrupts the side band generated by data modulation in the light transmission terminal station 10. The respective optical receivers 26-1 to 26-4 receive the output signal light beams of the corresponding filters 24-1 to 24-4.
COPYRIGHT: (C)2004,JPO&NCIPI

4. 发明专利

JP2004080301A Method and system for monitoring distributed raman optical transmission line 审中-公开
公开(公告)号：JP2004080301A
公开(公告)日：2004-03-11
申请号：JP2002236904
申请日：2002-08-15
申请人： Kddi Submarine Cable Systems Inc , Mitsubishi Electric Corp , ケイディディアイ海底ケーブルシステム株式会社 , 三菱電機株式会社
发明人： IMAI KAORU , KUROSAWA YOKO , EDAKAWA NOBORU , SAKATA HARUHISA
IPC分类号： H01S3/00 , H01S3/0941 , H01S3/13 , H01S3/30 , H04B10/07 , H04B10/071 , H04B10/077 , H04B10/079 , H04B10/29 , H04B10/291 , H04B10/08 , H04B10/16 , H04B10/17
CPC分类号： H04B10/2916 , H01S3/0941 , H01S3/1305 , H01S3/302 , H04B10/03 , H04B10/07955 , H04B10/0797
摘要： PROBLEM TO BE SOLVED: To conveniently discriminate a trouble of cable from a trouble of Raman pumping light.
SOLUTION: A pumping LD 22 generates a Raman pumping light of wavelength λp being fed through an optical circulator 20 to an optical fiber 12. A light receiving unit 24 monitors output power of the pumping LD 22. An optical demultiplexer 26 feeds the light entering an optical repeater 14 from the optical fiber 12, substantially entirely, to an optical isolator 28 and feeds the remainder to an optical demultiplexer 30. The optical demultiplexer 30 separates an input light into an optical signal Sa component and a component of wavelength λp. Light receiving units 32 and 34 convert the signal light component and the component of wavelength λp separated by means of the optical demultiplexer 30 into electric signals. A comparator 36 compares the outputs from the light receiving units 32 and 34 with a normal level stored in a storage 38 and judges presence and cause of a trouble in Raman amplification on the optical fiber 12.
COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2004104386A Optical signal processing apparatus, optical receiver, and method for apparatus and receiving 有权
公开(公告)号：JP2004104386A
公开(公告)日：2004-04-02
申请号：JP2002262338
申请日：2002-09-09
申请人： Kddi Submarine Cable Systems Inc , Mitsubishi Electric Corp , ケイディディアイ海底ケーブルシステム株式会社 , 三菱電機株式会社
发明人： MORITA ITSURO , TSURITANI TAKEHIRO , EDAKAWA NOBORU
IPC分类号： H04J14/02 , H04B10/2507 , H04J14/00 , H04J14/08 , H04B10/02 , H04B10/18
摘要： PROBLEM TO BE SOLVED: To provide an optical signal processing apparatus which effectively suppresses interference between channels without making polarized waves orthogonal to each other between adjacent channels, and also to provide an optical receiver and a method for the processing and the receiving.
SOLUTION: An optical WDM demultiplexer 20 of a reception terminal station 14 demultiplexes a signal light with each wavelength. An optical TDM demultiplexer 22 demultiplexes a signal light with 40Gb/s into four signal lights with 10G/s, and applies them to interference suppression apparatuses 24a to 24d. The signal light from the optical TDM demultiplexer 22 is given to a wavelength dispersion medium 30 of the interference suppression apparatus 24a. A coherent component due to a crosstalk from an adjacent wavelength is shifted to a front edge and a tail edge of an optical pulse by a group delay of the wavelength dispersion medium 30 depending on the wavelength. A branching device 32 divides an output light from the wavelength dispersion medium 30 into two, applies the one to a clock extract device 34 and applies the other to an optical gate device 36. The device 34 extracts a clock from the optical pulse signal from the branching device 32 and controls the optical gate device 36 by using the extracted clock. The optical gate device 36 transits a middle part of the optical pulse signal from the branching device 32 in response to the clock from the device 34.
COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2007067599A Data transmission method, optical transmission system, and dummy data inserting apparatus 有权
标题翻译：数据传输方法，光传输系统和数据传输设备
公开(公告)号：JP2007067599A
公开(公告)日：2007-03-15
申请号：JP2005248624
申请日：2005-08-30
申请人： Kddi Corp , Kddi株式会社
发明人： OBARA KAZUHO , EDAKAWA NOBORU
IPC分类号： H04L12/44 , H04B10/00 , H04B10/27 , H04B10/272 , H04B10/524 , H04J14/00 , H04J14/02 , H04N7/22 , H04N21/647
摘要： PROBLEM TO BE SOLVED: To reduce interference of idle patterns on a video signal in a data/video transmission service adopting three wavelengths.
SOLUTION: A dummy data inserting apparatus (32) is located between a LAN switch 30 and an uplink port of an OLT (10). A dummy data generating apparatus (36) generates dummy data that can pass through the OLT (10) and be thrown away at all subscriber apparatuses 22-1 to 22-n. The dummy data inserting apparatus (32) supplies output data of a buffer (34) to the OLT (10) when the buffer (34) has downlink data, and supplies the dummy data output from the dummy data generating apparatus (36) to the OLT (10) when the buffer (34) has no downlink data. The dummy data comprise a random pattern or a pseudo random pattern (PN sequence) located to a payload of Ethernet (R) frames.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了减少采用三个波长的数据/视频传输服务中的空闲模式对视频信号的干扰。解决方案：虚拟数据插入装置（32）位于LAN交换机30和OLT（10）的上行链路端口之间。伪数据生成装置（36）生成可以通过OLT（10）的虚拟数据，并在所有用户装置22-1至22-n处被丢弃。当缓冲器（34）具有下行链路数据时，虚拟数据插入装置（32）将缓冲器（34）的输出数据提供给OLT（10），并将从虚拟数据生成装置（36）输出的虚拟数据提供给当缓冲器（34）没有下行链路数据时，OLT（10）。伪数据包括位于以太网帧的有效载荷上的随机模式或伪随机模式（PN序列）。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2007088534A Data transmission method and system, and optical transmitter 审中-公开
标题翻译：数据传输方法和系统以及光传输器
公开(公告)号：JP2007088534A
公开(公告)日：2007-04-05
申请号：JP2005271311
申请日：2005-09-20
申请人： Kddi Corp , Kddi株式会社
发明人： AGATA AKIRA , EDAKAWA NOBORU
IPC分类号： H04B10/516 , H04B10/556 , H04B10/61 , H04B10/85 , H04K1/00
摘要： PROBLEM TO BE SOLVED: To provide a data transmission method for achieving high confidentiality communication through a simple arrangement. SOLUTION: Two optical carriers are generated by a laser diode 14 and a demultiplexer 16. An optical modulator 18a performs intensity modulation of the first optical carrier with transmission data. An optical modulator 18b performs intensity modulation of the second optical carrier with a dummy signal from a delay circuit 24. An optical filter 26a extracts the light carrier component and one sideband component from an output optical signal of the optical modulator 18a. An optical filter 26b extracts only a different sideband component from an output dummy optical signal of the optical modulator 18b. An optical multiplexer 28 multiplexes output light from the optical filters 26a and 26b. The optical filter 44 of an optical receiver 40 extracts the optical component of output signal from the optical filter 26a. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过简单的布置实现高机密性通信的数据传输方法。解决方案：由激光二极管14和解复用器16产生两个光载波。光调制器18a用传输数据执行第一光载波的强度调制。光调制器18b利用来自延迟电路24的虚拟信号对第二光载波进行强度调制。光滤波器26a从光调制器18a的输出光信号中提取光载波分量和一个边带分量。光滤波器26b从光调制器18b的输出虚拟光信号中仅提取不同的边带分量。光复用器28复用来自滤光器26a和26b的输出光。光接收器40的滤光器44从滤光器26a提取输出信号的光学分量。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2006080582A Method and apparatus of restricting harmful traffic 审中-公开
标题翻译：限制有害交通的方法和装置
公开(公告)号：JP2006080582A
公开(公告)日：2006-03-23
申请号：JP2004259140
申请日：2004-09-07
申请人： Kddi Corp , Kddi株式会社
发明人： TANAKA HIROHITO , EDAKAWA NOBORU , YAMAMOTO SHU
IPC分类号： H04L12/44
摘要： PROBLEM TO BE SOLVED: To enable suppressing a harmful traffic.
SOLUTION: A harmful traffic detecting device 48 detects a harmful traffic included in an upstream traffic from a traffic separating device 38 to a network interface 40. A result of detection of the device 48 is stored in a traffic transfer history database 50. An SLA setting database 52 stores information of SLA (service level agreement) such as minimum band guarantee and a maximum permission band for each user. A DBA controller 44 of an OLT control device 42 refers to the database 52 and the database 50 to decide a band to be assigned to a band request from each user. If a harmful traffic is detected in the upstream traffic, the DBA controller 44 reduces or nullify a band to be assigned to an ONU outputting the harmful traffic.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：能够抑制有害的交通。解决方案：有害通信量检测装置48检测包括在从业务分离装置38到网络接口40的上行业务中的有害业务。设备48的检测结果存储在业务传输历史数据库50中。 SLA设置数据库52存储针对每个用户的诸如最小频带保证和最大允许频带的SLA（服务水平协议）的信息。 OLT控制设备42的DBA控制器44参考数据库52和数据库50来确定要分配给每个用户的频带请求的频带。如果在上游业务中检测到有害的业务，则DBA控制器44减少或消除分配给输出有害业务的ONU的频带。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2004336575A Optical transmission method and system 审中-公开
公开(公告)号：JP2004336575A
公开(公告)日：2004-11-25
申请号：JP2003132254
申请日：2003-05-09
申请人： Kddi Corp , Kddi株式会社
发明人： YOSHIKANE NOBORU , MORITA ITSURO , EDAKAWA NOBORU
IPC分类号： H04B10/516 , H04B10/2507 , H04B10/556 , H04B10/58 , H04B10/61 , H04J14/00 , H04J14/02 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152
摘要： PROBLEM TO BE SOLVED: To improve the frequency use efficiency of wavelength division multiplexing (WDM) transmission.
SOLUTION: Optical transmitters 20-1 to 20-n output RZ-DPSK signals of linearly polarized light having mutually different wavelengths λ1 to λn. Optical band pass filters (OBPF) 22-1 to 22-n limit bands of output signal light of optical transmitters 20-1 to 20-n. A multiplexer 24 orthogonally polarizes and multiplexes respective output light of OBPFs 20-1 to 20-n. A demultiplexer 30 demultiplexes WDN signal light propagated in an optical transmission line 10 into signal light of channels ch1 to chn. Signal light of the channel ch1 demultiplexed by the demultiplexer 30 is delayed by a half bit and is detected by a branching device 32-1, a half-bit delay device 34-1, and a synthesizing device 36-1.
COPYRIGHT: (C)2005,JPO&NCIPI

10. 发明专利

JP2009105958A Optical connector 审中-公开
标题翻译：光学连接器
公开(公告)号：JP2009105958A
公开(公告)日：2009-05-14
申请号：JP2009021102
申请日：2009-02-02
申请人： Kddi Corp , Kddi株式会社
发明人： HORIUCHI YUKIO , EDAKAWA NOBORU
IPC分类号： H04M11/00
摘要： PROBLEM TO BE SOLVED: To notify a communication partner of a location of a calling source of an IP telephone. SOLUTION: Wireless IC tags 22-1 to 22-n holding unique identification information are mounted on optical connectors 20-1 to 20-n of a user connection port. Correspondence between locations of the optical connectors 20-1 to 20-n and the identification information on the wireless IC tags 22-1 to 22-n is registered in a port management database 34. An IC tag reader 52 of an ONU 40 reads the identification information on the wireless IC tag 22-1 of the optical connector 20-1 to be connected. In case of an emergency call, the ONU 40 transmits destination information on the emergency call and the identification information on the wireless IC tag 22-1 to a center station 10. A management terminal device 32 of the center station 10 investigates the location of the optical connector 20-1 by checking the identification information on the wireless IC tag 22-1 with the database 34. The center station 10 adds information indicating the location that is investigated to the destination information on the emergency call and outputs the information to an IP network 24. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通知IP电话的呼叫源的位置的通信伙伴。解决方案：保持独特识别信息的无线IC标签22-1至22-n安装在用户连接端口的光连接器20-1至20-n上。光连接器20-1至20-n的位置与无线IC标签22-1至22-n的识别信息之间的对应关系登记在端口管理数据库34中。ONU40的IC标签读取器52读取要连接的光连接器20-1的无线IC标签22-1上的识别信息。在紧急呼叫的情况下，ONU40将紧急呼叫的目的地信息和无线IC标签22-1上的识别信息发送到中心站10.中心站10的管理终端装置32调查通过使用数据库34检查无线IC标签22-1上的识别信息，中心站10将表示被调查位置的信息添加到关于紧急呼叫的目的地信息，并将信息输出到IP 网络24.版权所有（C）2009，JPO＆INPIT

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