专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US5162936A Apparatus for monitoring the operation of an optical repeater 失效
标题翻译：用于监测光学重复器的操作的装置
公开(公告)号：US5162936A
公开(公告)日：1992-11-10
申请号：US655530
申请日：1991-02-14
申请人： Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Hiroharu Wakabayashi
发明人： Hidenori Taga , Shu Yamamoto , Noboru Edagawa , Hiroharu Wakabayashi
IPC分类号： H01S3/067 , H01S3/131 , H04B10/07 , H04B10/077 , H04B10/29 , H04B10/54 , H04B10/564
CPC分类号： H04B10/2931 , H04B10/0777 , H04B10/2912 , H04B10/2918 , H01S3/06754 , H01S3/10015 , H01S3/1301 , H04B2210/074
摘要： Apparatus for monitoring a plurality of optical repeaters of an optical communication system in which each said repeater directly amplifies an optical signal transmitted in an optical fiber and passing through the respective optical repeater, including an optical division circuit for dividing an outgoing main line signal and a monitoring signal, a format conversion circuit by which monitoring information is converted into binary information, a previous modulation circuit by which a monitoring signal is modulated with a sine wave, a comparison circuit which compares the monitoring signal with a reference voltage, a voltage controlled amplifier which amplifies the modulated monitoring signal, an automatic gain control circuit which regulates the output from the outgoing optical repeater, and an outgoing optical repeater which includes a stimulating light source, a wave synthesizer and a doped optical fiber.
摘要翻译：一种用于监视光通信系统的多个光中继器的设备，其中每个所述中继器直接放大在光纤中传输的光信号并通过相应的光中继器，包括用于划分输出主线信号的光分路电路和监视信号，将监视信息转换为二进制信息的格式转换电路，用正弦波调制监视信号的先前调制电路，将监视信号与参考电压进行比较的比较电路，压控放大器其放大调制监视信号，调节输出光中继器的输出的自动增益控制电路和包括刺激光源，波合成器和掺杂光纤的输出光中继器。

32. 发明授权

US06504638B1 Optical amplifying transmission system and optical amplifier 失效
标题翻译：光放大传输系统和光放大器
公开(公告)号：US06504638B1
公开(公告)日：2003-01-07
申请号：US09206512
申请日：1998-12-07
申请人： Keiji Tanaka , Noboru Edagawa , Hidenori Taga , Shu Yamamoto
发明人： Keiji Tanaka , Noboru Edagawa , Hidenori Taga , Shu Yamamoto
IPC分类号： H04B1016
CPC分类号： H04B10/294 , H04J14/0221
摘要： To increase the number of multiplexed wavelengths and to improve transmission characteristics in a wavelength-division-multiplexed transmission, a bandwidth compressor for bandwidth-compressing the wavelength-division-multiplexed signal light is disposed at a front part of respective optical amplifiers and a bandwidth expander for bandwidth-expanding the wavelength-division-multiplexed signal light output from said optical amplifiers is disposed at a rear part of said optical amplifiers.
摘要翻译：为了增加复用波长的数量并改善波分复用传输中的传输特性，用于带宽压缩波分复用信号光的带宽压缩器被布置在各个光放大器的前部，带宽扩展器为了带宽扩展，从所述光放大器输出的波分复用信号光布置在所述光放大器的后部。

33. 发明授权

US5838477A Optical submarine branching device 失效
标题翻译：光学潜艇分支装置
公开(公告)号：US5838477A
公开(公告)日：1998-11-17
申请号：US727678
申请日：1996-10-08
申请人： Shu Yamamoto , Noboru Edagawa , Hidenori Taga , Tetsuyuki Miyakawa
发明人： Shu Yamamoto , Noboru Edagawa , Hidenori Taga , Tetsuyuki Miyakawa
IPC分类号： G02B27/28 , G02B6/12 , G02B6/34 , G02F1/31 , H04B10/03 , H04B10/038 , H04B10/07 , H04B10/27 , H04B10/29 , H04B10/296 , H04J14/00 , H04J14/02 , H04B10/17
CPC分类号： G02B6/2932 , G02B6/12007 , G02B6/29383 , H04J14/0206 , H04J14/0212 , H04J14/0213 , G02B2006/12164
摘要： An optical submarine branching unit employing an optical circuit structure which is small in the number of optical components used, permits reduction of optical insertion loss and is well compatible with the ADD/DROP function suitable for use in wavelength multiplex transmission. An optical fiber pair provided in an optical submarine cable connecting between first and second points is branched toward a third point, an optical circulator capable of reversing the direction of rotation of an optical input/output is provided as optical switching means by which, in the event of a failure in the branch transmission system having the branched optical fiber pair, the optical fiber pair is connected between the first and second points directly without being branched to the third point.
摘要翻译：采用光学组件数量少的光学电路结构的光学海底分支单元允许减少光插入损耗，并且与适用于波长多路复用传输的ADD / DROP功能很好地兼容。设置在连接在第一和第二点之间的光学海底光缆中的光纤对被分配到第三点，能够反转光输入/输出的旋转方向的光循环器被提供作为光开关装置，在具有分支光纤对的分支传输系统中发生故障的事件，光纤对直接连接在第一和第二点之间，而不分支到第三点。

34. 发明授权

US5140452A Long-distance high-speed optical communication scheme 失效
标题翻译：长距离高速光通信方案
公开(公告)号：US5140452A
公开(公告)日：1992-08-18
申请号：US636863
申请日：1991-01-02
申请人： Shu Yamamoto , Hidenori Taga , Noboru Edagawa , Yoshihiro Yoshida , Shiro Ryu , Hiroharu Wakabayashi
发明人： Shu Yamamoto , Hidenori Taga , Noboru Edagawa , Yoshihiro Yoshida , Shiro Ryu , Hiroharu Wakabayashi
IPC分类号： G02B6/00 , G02F2/00 , H04B10/00 , H04B10/2525 , H04B10/508 , H04B10/524 , H04B10/54 , H04B10/588
CPC分类号： H04B10/505
摘要： In a long-distance high-speed optical communication scheme in which multiple optical amplifiers are provided at a large number of stages in optical fibers, an optical signal from a light source which has a desired small line width and oscillates at a single wavelength is modulated at a high speed by an external modulator and then transmitted in the fibers which are dispersion shifted optical fibers, the zero-dispersion wavelength in which is set to be larger than the oscillation wavelength of the light source. Therefore, noises and the modulation instability, which would occur due to the phase fluctuation in the oscillation wavelength of the light source, and the influence of a waveform distortion due to the dispersion in the optical fibers can be avoided to make it possible for the first time in history to transmit the optical signals at the high-speed in the long-distance optical communication system employing the optical amplifiers.
摘要翻译：在光纤中以多个阶段提供多个光放大器的长距离高速光通信方式中，来自具有期望的小线宽并且以单个波长振荡的光源的光信号被调制通过外部调制器以高速度传输，然后在作为色散位移光纤的光纤中传输，其中零色散波长被设置为大于光源的振荡波长。因此，可以避免由于光源的振荡波长的相位波动而产生的噪声和调制不稳定性，以及由于光纤中的色散引起的波形失真的影响，使得第一在使用光放大器的长距离光通信系统中以高速传输光信号的历史时间。

35. 发明授权

US06532091B1 Optical digital regenerator 失效
标题翻译：光学数字再生器
公开(公告)号：US06532091B1
公开(公告)日：2003-03-11
申请号：US09246256
申请日：1999-02-08
申请人： Tetsuya Miyazaki , Tomohiro Otani , Masatoshi Suzuki , Noboru Edagawa , Shu Yamamoto
发明人： Tetsuya Miyazaki , Tomohiro Otani , Masatoshi Suzuki , Noboru Edagawa , Shu Yamamoto
IPC分类号： H04B1002
CPC分类号： H04B10/299
摘要： An optical digital regenerator for digitally regenerating an input signal in an intact optical state. A first operating unit has a first probe light generator for generating a first probe light and a first optical operator for converting a waveform of the first probe light output from a first probe light generator according to an optical intensity waveform of the input signal light. A clock extractor extracts a clock component of the input signal light from a photocurrent generated by the first optical operator. A second optical operating unit has a second probe light generator for generating a second probe light pulsed in accordance with the clock output from the clock extractor and a second optical operator for sampling the second probe pulse light output from the second probe light generator.
摘要翻译：一种用于以完整光学状态数字再生输入信号的光学数字再生器。第一操作单元具有用于产生第一探测光的第一探测光发生器和用于根据输入信号光的光强度波形转换从第一探测光发生器输出的第一探测光的波形的第一光学操作器。时钟提取器从由第一光学运算器产生的光电流提取输入信号光的时钟分量。第二光学操作单元具有第二探测光发生器，用于产生根据来自时钟提取器的时钟输出脉冲的第二探测光，以及第二光学操作器，用于对从第二探测光发生器输出的第二探测脉冲光进行采样。

36. 发明授权

US5959764A Wavelength converter, optically operational device and optical pulse phase detecting circuit 失效
标题翻译：波长转换器，光学运算器件和光脉冲相位检测电路
公开(公告)号：US5959764A
公开(公告)日：1999-09-28
申请号：US923349
申请日：1997-09-04
申请人： Noboru Edagawa , Masatoshi Suzuki , Shu Yamamoto
发明人： Noboru Edagawa , Masatoshi Suzuki , Shu Yamamoto
IPC分类号： G02F2/02 , G02F1/015 , G02F2/00 , G02F3/00 , H04B10/2507 , H04B10/29 , H04B10/516 , H04B10/54 , H04B10/572 , H04B10/58 , H04B10/61 , H04J14/08 , G02F1/39
CPC分类号： G02F2/004 , G02F2001/0157 , H01S5/509 , H04J14/08
摘要： A waveform converter includes a transmission-type InGaAsP electroabsorption optical modulator 10 using the Franz-Keldysh effect. Continuous light (probe light) 12 as a target of wavelength conversion is fed to an end surface 10a of the optical modulator 10 while a constant voltage of 3 V is applied to the optical modulator 10. An optical circulator 14 is supplied with original signal light (signal light to be waveform-converted) 16 through its terminal A, and delivers it from the terminal B thereof to another end surface 10b of the optical modulator 10. The optical modulator 10 gives a loss to the probe light 12 according to the intensity of the original signal light 16 and makes the waveform of the probe light 12 to be substantially the same as the original signal light. The probe light waveform-converted by the optical modulator 10 and output from the end surface 10b is fed to a terminal B of an optical circulator 14 as a waveform-converted light 18 and output from its terminal C.
摘要翻译：波形转换器包括使用Franz-Keldysh效应的透射型InGaAsP电吸收光调制器10。将作为波长转换的目标的连续光（探测光）12馈送到光调制器10的端面10a，同时将3V的恒定电压施加到光调制器10。光环行器14被提供有原始信号光（要被波形转换的信号光）16，并将其从端子B传送到光调制器10的另一端面10b。光调制器10根据强度给探测光12带来损耗的原始信号光16，使探测光12的波形基本上与原始信号光相同。由光调制器10波形转换并从端面10b输出的探测光被作为波形转换光18馈送到光环行器14的端子B，并从其端子C输出。

37. 发明授权

US06768872B1 Optical transmission system, optical transmission line and optical transmitter 失效
标题翻译：光传输系统，光传输线和光发射机
公开(公告)号：US06768872B1
公开(公告)日：2004-07-27
申请号：US09670003
申请日：2000-09-25
申请人： Takehiro Tsuritani , Keiji Tanaka , Noboru Edagawa , Masatoshi Suzuki
发明人： Takehiro Tsuritani , Keiji Tanaka , Noboru Edagawa , Masatoshi Suzuki
IPC分类号： H04J1402
CPC分类号： H04B10/25253
摘要： An optical transmitter outputs WDM signal lights comprising signal lights with 100 wavelengths of 10 Gbit/s, onto an optical transmission fiber. In the optical transmission line, a transmission fiber and a local area dispersion compensation fiber are disposed per repeater span defined by an optical amplification repeater, the local area dispersion compensation fiber is for compensating the average chromatic dispersion in the repeater span to become 2 ps/nm/km as well as a dispersion slope to become zero, and a wide area dispersion compensation fiber for compensating the average chromatic dispersion to become −0.2 ps/nm/km as well as the dispersion slope to become zero is disposed per predetermined number of optical repeater spans. The optical transmission fiber comprises a single mode optical fiber with large core diameter having a zero dispersion wavelength at a 1.3 &mgr;m band and plus chromatic dispersion at a signal wavelength band (a 1.55 &mgr;m band). The optical amplification repeater comprises an erbium-doped optical fiber to be pumped by a 0.98 &mgr;m band pumping light.
摘要翻译：光发射机将包含10兆比特/秒波长的信号光的WDM信号灯输出到光传输光纤上。在光传输线路中，在由光放大中继器限定的每个中继器跨度上布置传输光纤和局部色散补偿光纤，局部色散补偿光纤用于将中继器跨度中的平均色散补偿为2ps / nm / km以及色散斜率为零，并且将用于将平均色散补偿为-0.2ps / nm / km以及将色散斜率补偿为零的广域色散补偿光纤设置为每个预定数量的光中继器。光传输光纤包括在1.3mum波段处具有零色散波长的大芯径的单模光纤，并且在信号波长带（1.55μm波段）处加上色散。光放大中继器包括一个掺铒光纤，通过0.98 mum带激发光泵浦。

38. 发明授权

US06748178B2 Optical transmission line 失效
标题翻译：光传输线
公开(公告)号：US06748178B2
公开(公告)日：2004-06-08
申请号：US09795245
申请日：2001-02-26
申请人： Takayuki Miyakawa , Masatoshi Suzuki , Noboru Edagawa
发明人： Takayuki Miyakawa , Masatoshi Suzuki , Noboru Edagawa
IPC分类号： H04B1018
CPC分类号： H04B10/2916 , H04B2210/003
摘要： An optical fiber (12a) with a large effective core area and a large chromatic dispersion value is disposed on an input side of signal light, and an optical fiber (12b) with a small effective core area and a small chromatic dispersion value or a chromatic dispersion value of negative polarity is disposed on an output side of the signal light. A pumping light source (14) generates pumping light of 1450 nm to cause Raman amplification of 1550 nm in the optical fiber (12b). The output light from the pumping light source (14) enters the optical fiber (12b) from the back through a WDM optical coupler (16). Provided that y=(Pin−&agr;)/(Pp·10 Log L) where input power of the optical fiber (12a) (i.e. output power of an optical transmitter (10)) is Pin, a total loss of the optical fibers (12a and 12b) is &agr;, pumping power for Raman amplification is Pp, and a total length of the optical fibers (12a and 12b) is L, the relation between ratio x (0≦x≦1) of the optical fiber (12b) and y is expressed as y=6.63×10−2x−0.077. Here, the satisfactory x value is in a range from +0.2 to −0.2 of the y value.
摘要翻译：具有大的有效核心面积和大的色散值的光纤（12a）被布置在信号光的输入侧，并且具有小的有效核心区域和小的色散值或色度的光纤（12b）负极性的色散值被设置在信号光的输出侧。泵浦光源（14）产生1450nm的泵浦光，以在光纤（12b）中引起1550nm的拉曼放大。来自泵浦光源（14）的输出光通过WDM光耦合器（16）从后面进入光纤（12b）。假设光纤（12a）的输入功率（即，光发射器（10）的输出功率））为Pin的y =（Pin-alpha）/（Pp.10Log L），光纤的总损耗 12a和12b）为α，用于拉曼放大的泵送功率为Pp，光纤（12a和12b）的总长度为L，光纤的比例x（0 <= x <= 1） 12b），y表示为y = 6.63×10 -2 x-0.077。这里，满意的x值在y值的+0.2〜-0.2的范围内。

39. 发明授权

US06728437B2 Pumping light generator and fiber Raman amplifier 失效
标题翻译：泵浦光发生器和光纤拉曼放大器
公开(公告)号：US06728437B2
公开(公告)日：2004-04-27
申请号：US09882352
申请日：2001-06-15
申请人： Noboru Edagawa , Masatoshi Suzuki
发明人： Noboru Edagawa , Masatoshi Suzuki
IPC分类号： G02B626
CPC分类号： H01S3/09415 , H01S3/09408 , H01S3/302
摘要： An object of the present invention is to prevent an increase of the degree of polarization of an output pumping light even if one of pumping light sources has a failure. Laser diodes (30a, 30b) are composed of FP-LDs made of InGaAsP to laser-oscillate at 1480 nm band. The outputs from the laser diodes (30a, 30b) enter a polarizing beam splitter (32) in orthogonal state of polarization and are combined there. The combined light by the polarizing beam splitter (32) enters a depolarizing element (34) and is depolarized there.
摘要翻译：本发明的一个目的是防止输出泵浦光的偏振度的增加，即使其中一个泵浦光源有故障。激光二极管（30a，30b）由由InGaAsP制成的FP-LD组成，以1480nm波段激光振荡。来自激光二极管（30a，30b）的输出以正交偏振态进入偏振光束分离器（32）并在其中组合。由偏振分束器（32）组合的光进入去极化元件（34），并在那里去极化。

40. 发明授权

US06549711B1 Soliton pulse compression optical fiber and method for making soliton pulse compression optical fiber 失效
标题翻译：孤子脉冲压缩光纤和孤子脉冲压缩光纤的方法
公开(公告)号：US06549711B1
公开(公告)日：2003-04-15
申请号：US09240593
申请日：1999-02-01
申请人： Tadakatsu Shimada , Kazuo Koya , Noboru Edagawa , Masatoshi Suzuki , Itsuro Morita
发明人： Tadakatsu Shimada , Kazuo Koya , Noboru Edagawa , Masatoshi Suzuki , Itsuro Morita
IPC分类号： G02B602
CPC分类号： G02B6/02247 , C03B37/027 , C03B2203/06 , C03B2203/18 , C03B2203/36 , G02B6/02 , G02B6/02028
摘要： The soliton pulse compression optical fiber comprises a core and a clad that surrounds the core for compressing the injected light pulse in width. The maximum relative index difference between the core and the clad is between about 1.2% and 2.5%. The core diameter of the soliton pulse compression optical fiber varies along the length of the soliton pulse compression optical fiber and the core has a step-like refractive index distribution. The optical fiber perform of the soliton pulse compression optical fiber comprises a core preform, which is to be a core of the soliton pulse compression optical fiber, and a clad preform that surrounds the core preform. The maximum relative index difference between the core perform and the clad preform is also between about 1.2% and 2.5%.
摘要翻译：孤子脉冲压缩光纤包括芯和围绕芯的包层，用于压缩注入的光脉冲的宽度。芯和包层之间的最大相对折射率差在约1.2％至2.5％之间。孤子脉冲压缩光纤的芯直径沿着孤子脉冲压缩光纤的长度变化，并且芯具有阶梯状折射率分布。孤子脉冲压缩光纤的光纤执行包括作为孤子脉冲压缩光纤的核心的芯预制棒和围绕芯预制棒的包层预制棒。核心执行和包层预制件之间的最大相对折射率差异也在约1.2％至2.5％之间。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式