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1. 发明专利

JP2008054219A Optical transceiver 审中-公开
标题翻译：光学收发器
公开(公告)号：JP2008054219A
公开(公告)日：2008-03-06
申请号：JP2006230932
申请日：2006-08-28
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： KATO TAKATOSHI
IPC分类号： H04B10/2507 , H04B10/2513 , H04B10/2581 , H04J14/00 , H04J14/02
摘要： PROBLEM TO BE SOLVED: To provide an optical transceiver reducing power consumption.
SOLUTION: The optical transceiver receives light including signal light of wavelengths λ1-λ4 and outputs the signal light after electrically compensating for dispersion included therein using transversal filters 21-24. In an electrical dispersion compensation circuit of the optical transceiver, tap coefficients c
0 -c
m , d
0 -d
n are optimized suitably for compensating for the dispersion of signal light of the wavelength λ2 and the dispersion of signal light of the other wavelengths λ1, λ3 and λ4 is also compensated by applying the optimized tap coefficients c
0 -c
m , d
0 -d
n thereto.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供降低功耗的光收发器。解决方案：光收发器接收包括波长λ1-λ4的信号光的光，并且在使用横向滤波器21-24对其中包含的色散进行电补偿之后输出信号光。在光收发器的电色散补偿电路中，抽头系数c -c m ，d 0 SB>被适当地优化用于补偿波长λ2的信号光的色散，并且其它波长λ1，λ3和λ4的信号光的色散也通过应用优化的抽头系数c 0 来补偿 -c m ，d 0 -d n 。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2005202440A Optical fiber and optical communication system containing optical fiber 有权
标题翻译：包含光纤的光纤和光通信系统
公开(公告)号：JP2005202440A
公开(公告)日：2005-07-28
申请号：JP2005107762
申请日：2005-04-04
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： HIRANO MASAAKI , KATO TAKATOSHI
IPC分类号： G02B6/02 , G02B6/028 , G02B6/036 , G02B6/16 , G02B6/18 , G02B6/22
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber having a structure suitable for a long-distance optical communication. SOLUTION: The optical fiber (200) comprises a core area (210) and a clad area (220) disposed so as to surround an outer circumference of the core area (210). The clad area (220) is composed of an inner clad (221) that has a refractive index lower than the core area (210) and an outer clad (222) that has a refractive index higher than the inner clad (221). The optical fiber (200) has an effective cross section of 110 μm 2 or more at a wavelength of 1.55 μm, and, because of this enlarged effective cross section, suppresses an occurrence of a nonlinear optical phenomenon effectively even when a power of incident light is increased, allowing a longer-distance optical communication. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有适合于长距离光通信的结构的光纤。解决方案：光纤（200）包括设置成围绕芯区域（210）的外周的芯区域（210）和覆盖区域（220）。包层区域（220）由折射率低于核心区域（210）的内包层（221）和折射率高于内包层（221）的外包层（222）构成。光纤（200）的波长为1.55μm时的有效截面积为110μm×SP＆gt;以上，由于有效截面积扩大，有效抑制了非线性光学现象的发生即使当入射光的功率增加时，允许更长距离的光通信。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2004170704A Optical fiber, dispersion compensator, and optical transmission path 审中-公开
公开(公告)号：JP2004170704A
公开(公告)日：2004-06-17
申请号：JP2002336856
申请日：2002-11-20
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： FUJII TAKASHI , KATO TAKATOSHI
IPC分类号： G02B6/00 , G02B6/036 , G02B6/22
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber for accurately compensating wavelength dispersion of a fiber for optical transmission, and a dispersion compensator and an optical transmission path using the optical fiber. SOLUTION: The optical fiber is characterized in that the wavelength dispersion has a negative value as well as has a shape of downward convex in wavelength bands 1,535-1,565nm, 1,565-1,610nm, 1,554-1,608nm or 1,535-1,610nm, respectively. Because a wavelength dispersion of a fiber for optical transmission of a conventional single mode fiber etc. has a shape of upward convex in a prescribed wavelength band, the wavelength dispersion of the fiber for the optical transmission may be appropriately compensated by using a dispersion compensation optical fiber of which the wavelength dispersion has the shape of downward convex in above described wavelength bands. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2003084163A Optical fiber, optical transmission line, and optical communication system 审中-公开
标题翻译：光纤，光传输线和光通信系统
公开(公告)号：JP2003084163A
公开(公告)日：2003-03-19
申请号：JP2001272418
申请日：2001-09-07
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： TSUKITANI MASAO , MATSUI MASAHIKO , KATO TAKATOSHI
IPC分类号： G02B6/036 , G02B6/34 , H04B10/2507 , H04B10/2513 , H04B10/2563 , H04B10/2569 , G02B6/22 , H04B10/02 , H04B10/18
CPC分类号： G02B6/02271 , G02B6/03633 , G02B6/29377
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber, etc., which are suitably used for an optical communication system capable of sending and receiving a large amount of information at high speed.
SOLUTION: This optical fiber has an internal core area with a refractive index n
1 including the center of an optical axis, an external core area with a refractive index n
2 surrounding the internal core area, and a clad area with a refractive index n
3 surrounding the external core area, and the indexes of the refractive areas are so determined that n
1 >n
2 >n
2 . The internal core area is formed substantially of pure-quartz glass since to Ge is added, and A refractive index decreasing agent such as F elements is added to the external core area and clad area. The optical fiber has 4 to 15 ps/nm/km wavelength dispersion at 1550 nm wavelength and ≤0.190 dB/km in a wavelength range of 1530 to 1570 nm and, preferably, ≤0.185 dB/km at 1500 nm wavelength.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供适合用于能够高速发送和接收大量信息的光通信系统的光纤等。解决方案：该光纤具有包括光轴中心的折射率n1的内部核心区域，围绕内部核心区域的具有折射率n2的外部核心区域以及包围外部的折射率n3的包层区域核心区域，折射区域的指标被确定为n1> n2> n2。由于添加了Ge，因此内部核心区域基本上由纯石英玻璃形成，并且在外部核心区域和包层区域中添加F元素等折射率降低剂。该光纤在1550nm波长的波长范围为1550nm波长处为4〜15ps / nm / km波长，在1530〜1570nm的波长范围为<0.190dB / km，在1500nm波长下为<0.185dB / km。

5. 发明专利

JP2010068029A Optical transceiver 审中-公开
标题翻译：光学收发器
公开(公告)号：JP2010068029A
公开(公告)日：2010-03-25
申请号：JP2008229854
申请日：2008-09-08
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： KATO TAKATOSHI
IPC分类号： H04B10/2507 , H04B3/06 , H04B10/07 , H04B10/2513 , H04B10/28 , H04B10/40 , H04B10/50 , H04B10/556 , H04B10/60 , H04B10/69
CPC分类号： H04B10/6971
摘要： PROBLEM TO BE SOLVED: To provide an optical transceiver capable of suppressing the ringing of optical transmission waveform and reducing an error rate of reception signals in a non-linear transmission type optical transmission reception system employing an optical receiver of a direct modulation system and a single mode optical fiber. SOLUTION: This optical transceiver 1 includes: an optical transmitter 10 having a drive circuit 12 for generating a drive signal from an input electric signal to output the generated signal, and for directly modulating an electric-optical conversion unit, and an electric-optical conversion unit 13 for converting a drive signal output from the drive circuit 12 into an optical signal to output the converted signal; and an optical receiver 20 having an optical-electric conversion unit 21 for converting the received optical signal into an electric signal to output the converted signal, a band limit filter 22 for allowing a band not more than a predetermined frequency of the electric signal output from the optical-electric conversion unit 21 to pass, and a dispersion equalizing unit 23 for determining to output the reception signal by executing maximum-likelihood sequence estimation based on the electric signal having passed through the band limit filter 22. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：提供一种能够抑制光传输波形的振铃并降低使用直接调制系统的光接收机的非线性传输型光传输接收系统中的接收信号的错误率的光收发器和单模光纤。解决方案：该光收发器1包括：光发送器10，具有驱动电路12，用于从输入电信号产生驱动信号以输出所生成的信号，并用于直接调制电光转换单元;以及电 - 光学转换单元13，用于将从驱动电路12输出的驱动信号转换成光信号以输出转换的信号; 以及具有用于将接收的光信号转换为电信号以输出转换的信号的光电转换单元21的光接收器20，用于允许不超过从...输出的电信号的预定频率的频带的频带限制滤波器22 光电转换单元21和色散均衡单元23，用于通过基于通过频带限制滤波器22的电信号执行最大似然序列估计来确定输出接收信号。版权所有（C） C）2010，JPO＆INPIT

6. 发明专利

JP2010050641A Optical receiver, optical transceiver, and method for optical reception 审中-公开
标题翻译：光接收机，光收发器和光接收方法
公开(公告)号：JP2010050641A
公开(公告)日：2010-03-04
申请号：JP2008212088
申请日：2008-08-20
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： KAMISUGI HIDEAKI , KATO TAKATOSHI
IPC分类号： H04B10/2507 , H04B3/06 , H04B10/07 , H04B10/2513
摘要： PROBLEM TO BE SOLVED: To provide an optical receiver, optical transceiver, and method for optical reception, capable of easily adjusting a tap coefficient to the suitable one even when dispersion characteristic changes comparatively significantly in accordance with replacement of transmission media. SOLUTION: A controller 4 outputs a reset signal K to a dispersion equalization part 6 when intensity of an optical signal deviates from a predetermined range based on output of an optical detection circuit 7 which detects change of the intensity of the optical signal to be input in an ROSA (Receiver Optical Sub-Assembly) 5. On receiving the reset signal K, the dispersion equalization part 6 sets the tap coefficient to a predetermined initial value. After that, the dispersion equalization part 6 adjusts the tap coefficient. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种光接收器，光收发器和光接收方法，即使当色散特性根据传输介质的替换而相对显着地改变时，能够容易地将抽头系数调整到合适的抽头系数。解决方案：当光信号的强度基于检测到光信号的强度的变化的光检测电路7的输出偏离预定范围时，控制器4向色散均衡部分6输出复位信号K. 在ROSA（接收机光学子组件）中输入5.在接收到复位信号K时，色散均衡部分6将抽头系数设定为预定的初始值。之后，色散均衡部6调整抽头系数。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2008028944A Optical communication device and transmission band measuring means 审中-公开
标题翻译：光通信设备和传输带测量方法
公开(公告)号：JP2008028944A
公开(公告)日：2008-02-07
申请号：JP2006202370
申请日：2006-07-25
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： KATO TAKATOSHI
IPC分类号： H04B10/07 , H04B10/077 , H04B10/2513 , H04B10/2581
摘要： PROBLEM TO BE SOLVED: To provide an optical communication device that facilitates measurement of the transmission band of an MMF even when both ends of the MMF are at a distance from each other, and a transmission band measuring means that uses the optical communication device.
SOLUTION: An optical transceiver 1 has a reception unit 2. The reception unit 2 has a photodiode 4 which receives signal light Pin and a reflector 8 including a light reflecting surface 9a. The reflector 8 has a first state wherein the light reflecting surface 9a is disposed in the gap between the photodiode 4 and MMF 20; and a second state wherein the light reflecting surface 9a is removed from the gap, and they are switchable. When the transmission band of the MMF 20 is measured, pulse light is made incident on the other end of the MMF 20 after the reflector 8 is placed in the first state, and return light reflected by the light reflecting surface 9a is detected on the other end side of the MMF 20 to find the transmission band of the MMF 20 based upon waveform distortion of the return light.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种即使在MMF的两端距离彼此相距一定距离的情况下也能够容易地测量MMF的传输频带的光通信装置，以及使用光通信的发送频带测量装置设备。光收发器1具有接收单元2.接收单元2具有接收信号光Pin的光电二极管4和包括光反射表面9a的反射器8。反射器8具有第一状态，其中光反射表面9a设置在光电二极管4和MMF 20之间的间隙中; 以及其中光反射表面9a从间隙移除的第二状态，并且它们是可切换的。当测量MMF 20的传输频带时，在反射器8处于第一状态之后，脉冲光入射到MMF20的另一端，另一方面检测到由光反射表面9a反射的返回光基于返回光的波形失真来找到MMF 20的发送频带。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2006228822A Photodetector 审中-公开
标题翻译：光电探测器
公开(公告)号：JP2006228822A
公开(公告)日：2006-08-31
申请号：JP2005038067
申请日：2005-02-15
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： KATO TAKATOSHI , KAMISAKA KATSUMI
IPC分类号： H01L31/107
摘要： PROBLEM TO BE SOLVED: To provide a photodetector which can be suppressed with an optical loss while at the same time it can be prevented from destruction of itself due to excessive incident light.
SOLUTION: The photodetector 10 includes a light receiving plane 15 and a thin film 18 which is formed directly on the light receiving plane 15 and contains PbSe nano-particles having a grain diameter of ≤20 nm. Since the thin film 18 serves for an optical fuse, the photodetector 10 can be prevented from destruction due to excessive incident light. Moreover, since the thin film 18 is formed directly on the light receiving plane 15, an optical loss can be suppressed between the thin film 18 and the light receiving plane 15.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供可以抑制光损耗的光电检测器，同时可以防止由于过多的入射光而导致的自身损坏。光电检测器10包括光接收面15和直接形成在光接收面15上并含有粒径≤20nm的PbSe纳米粒子的薄膜18。由于薄膜18用于光学熔丝，因此可以防止光电检测器10由于过多的入射光而被破坏。此外，由于薄膜18直接形成在受光面15上，所以可以抑制薄膜18和光接收面15之间的光学损失。（C）2006，JPO＆NCIPI

9. 发明专利

JP2004061741A Optical fiber, optical transmission line, and optical communication system 审中-公开
公开(公告)号：JP2004061741A
公开(公告)日：2004-02-26
申请号：JP2002218449
申请日：2002-07-26
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： HONMA NORITAKA , KATO TAKATOSHI
IPC分类号： G02B6/02 , G02B6/028 , G02B6/036 , G02B6/34 , G02B6/22 , G02B6/10
CPC分类号： G02B6/02009 , G02B6/02261 , G02B6/02271 , G02B6/0228 , G02B6/03644 , G02B6/29376 , G02B6/29377
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber capable of compensating both wavelength dispersion and a dispersion slope of a non-zero dispersion shift optical fiber in an L band. SOLUTION: An optical communication system 1 is equipped with an optical transmission line 10, an optical transmitter 20, and an optical receiver 30. The optical transmission line 10 transmits multi-wavelength signal light outputted from the optical transmitter 20 to the optical receiver 30. The optical transmission line 10 is constituted by connecting an optical fiber 11 and an optical fiber 12 together by fusion splicing. The optical fiber 11 has +6 to +10 ps/nm wavelength dispersion D 1 at a wavelength of 1,590 nm and a +0.07 to +0.10 ps/nm 2 /km dispersion slope S 1 at the wavelength of 1,590 nm. The optical fiber 12 satisfies relational expressions of -110≤D≤-50 and 0.009≤S/D≤0.011 for wavelength dispersion D 2 (unit: ps/nm/km) and a dispersion slope S 2 (unit: ps/nm2/km) at the wavelength of 1,590 nm. COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2009296259A Optical transceiver, and optical transmission system 审中-公开
标题翻译：光学收发器和光传输系统
公开(公告)号：JP2009296259A
公开(公告)日：2009-12-17
申请号：JP2008147201
申请日：2008-06-04
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： KATO TAKATOSHI
IPC分类号： H04B10/2507 , H04B10/2563 , H04J14/00 , H04J14/02
摘要： PROBLEM TO BE SOLVED: To provide an optical transceiver and an optical transmission system, for sufficiently reducing the occurrence of four-wave mixed light even at a relatively long transmission distance.
SOLUTION: The optical transceiver is provided with a transmitter 2 for outputting a wavelength multiplexed optical signal including a plurality of wavelengths belonging to a prescribed wavelength band, and a receiver 12 for receiving the wavelength multiplexed optical signal to transmit and receive an optical signal to/from an external device through an optical fiber 24. It has a dispersion compensator 10 for generating a second wavelength multiplexed optical signal obtained by adding a first dispersion amount to a first wavelength multiplexed optical signal outputted from the transmitter 2 and outputting the second wavelength multiplexed optical signal to the optical fiber 24. It is provided with a dispersion compensator 20 for generating another wavelength multiplexed optical signal obtained by compensating wavelength dispersion of the wavelength multiplexed optical signal from the optical fiber 24 and outputting a fourth wavelength multiplexed optical signal to the receiver 12. The dispersion compensator 20 adds the first dispersion amount for compensating a dispersion amount corresponding to the first dispersion amount to a third wavelength multiplexed optical signal.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了提供光收发器和光传输系统，即使在相对长的传输距离下也能充分减少四波混合光的出现。解决方案：光收发器设置有用于输出包括属于规定波长带的多个波长的波长复用光信号的发射机2和用于接收波长复用光信号以发射和接收光通过光纤24向外部设备发送信号。它具有色散补偿器10，用于产生通过将第一色散量加到从发送器2输出的第一波长多路复用光信号而获得的第二波长复用光信号，并输出第二波长复用光信号波长多路复用光信号到光纤24.具有色散补偿器20，用于产生通过补偿来自光纤24的波长复用光信号的波长色散获得的另一个波长复用光信号，并将第四波长复用光信号输出到接收机12 色散补偿器20将用于补偿与第一色散量相对应的色散量的第一色散量添加到第三波长复用光信号。版权所有（C）2010，JPO＆INPIT

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