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1. 发明授权

US06512613B1 WDM transmission repeater, WDM transmission system and WDM transmission method 失效
标题翻译： WDM传输中继器，WDM传输系统和WDM传输方式
公开(公告)号：US06512613B1
公开(公告)日：2003-01-28
申请号：US09380503
申请日：1999-09-03
申请人： Shigeru Tanaka , Masayuki Nishimura , Masayuki Shigematsu , Yasunori Murakami
发明人： Shigeru Tanaka , Masayuki Nishimura , Masayuki Shigematsu , Yasunori Murakami
IPC分类号： H04J1402
CPC分类号： H04J14/0206 , H04B10/294 , H04J14/0213
摘要： The present invention relates to a WDM transmission system and the like suitable for optical communications between local stations having a relatively short repeater interval. In particular, the WDM transmission repeater employed in the WDM transmission system demultiplexes a plurality of signal lights propagating through a transmission line into first and second groups, takes out the second group, comprises a multiplexer for sending into the transmission line a new WDM signal group in which the first group thus demultiplexed and a third group of signal lights different from those of the first group are multiplexed, and has a special structure for reducing the influence of the not-demultiplexed crosstalk components within the second group upon the optical communications.
摘要翻译：本发明涉及适合于具有相对短的中继器间隔的本地站之间的光通信的WDM传输系统等。特别地，在WDM传输系统中采用的WDM传输中继器将通过传输线传播的多个信号光分离成第一和第二组，取出第二组，包括一个多路复用器，用于向传输线发送新的WDM信号组其中如此解复用的第一组和与第一组不同的第三组信号光被复用，并且具有用于在光通信时减少第二组内的未解复用的串扰分量对第一组的影响的特殊结构。

2. 发明授权

US06782151B2 Raman amplifier, optical transmission system and optical fiber 失效
标题翻译：拉曼放大器，光传输系统和光纤
公开(公告)号：US06782151B2
公开(公告)日：2004-08-24
申请号：US09752526
申请日：2001-01-03
申请人： Eisuke Sasaoka , Masayuki Nishimura , Shigeru Tanaka
发明人： Eisuke Sasaoka , Masayuki Nishimura , Shigeru Tanaka
IPC分类号： G02B642
CPC分类号： G02B6/29377 , H01S3/094003 , H01S3/302 , H04B10/2525 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier having a great Raman amplification gain is disclosed. An optical transmission system 1 is provided with an optical fiber 31 for Raman amplification and an optical multiplexer 41 between a transmitter 10 and a receiver 20 in the order of enumeration, and further provided with a pump light source 51 for Raman amplification that is connected with the optical multiplexer 41. The wavelength of signal light to be transmitted from the transmitter 10 to the receiver 20 is at 1.65 &mgr;m band, and the wavelength of the pump light that is output from the light source 51 is C-band or L-band. Since the pump light for Raman amplification propagates at a low loss through the optical fiber for Raman amplification, a great Raman amplification gain can be attained by the Raman amplifier.
摘要翻译：公开了具有很大拉曼放大增益的拉曼放大器。光传输系统1按照枚举方式设置有用于拉曼放大的光纤31和发射机10和接收机20之间的光复用器41，并且还设置有用于拉曼放大的泵浦光源51，其与从发射机10发射到接收机20的信号光的波长为1.65mum的波段，从光源51输出的泵浦光的波长为C波段或L波段。由于拉曼放大的泵浦光通过用于拉曼放大的光纤以低损耗传播，所以通过拉曼放大器可以获得很大的拉曼放大增益。

3. 发明授权

US06535677B1 Dispersion-managed optical fiber, method of manufacturing the same, optical communication system including the same and optical fiber preform therefor 有权
标题翻译：色散管理光纤，其制造方法，包括该光纤的光通信系统和光纤预制棒
公开(公告)号：US06535677B1
公开(公告)日：2003-03-18
申请号：US09668347
申请日：2000-09-25
申请人： Shigeru Tanaka , Masayuki Nishimura , Shinji Ishikawa , Eisuke Sasaoka , Takatoshi Kato
发明人： Shigeru Tanaka , Masayuki Nishimura , Shinji Ishikawa , Eisuke Sasaoka , Takatoshi Kato
IPC分类号： G02B602
CPC分类号： G02B6/02242 , C03B37/0253 , C03B37/027 , C03B37/02745 , C03B37/032 , C03B2201/31 , C03B2203/19 , C03B2203/22 , C03B2203/36 , C03B2205/06 , C03B2205/40 , C03B2205/72 , C03C25/1062 , C03C25/223 , G02B6/02247 , G02B6/02257 , G02B6/02271 , G02B6/03627 , G02B6/03633 , G02B6/03644 , G02B6/0365 , G02B6/03666 , G02B6/29377
摘要： The present invention relates to a dispersion-managed optical fiber which can be manufactured easily and has a structure which enables the easy connection thereof with other optical fiber and the like. The dispersion-managed optical fiber is a silica-based optical fiber ensuring its single mode at a predetermined wavelength within a signal wavelength band, in which first portions each having a positive chromatic dispersion and second portions each having a negative chromatic dispersion are arranged alternately and adjacent to each other. In the dispersion-managed optical fiber, the dopant concentration is made uniform in the longitudinal direction and, corresponding to the above-mentioned first and second portions, the refractive index of a glass layer not doped with GeO2 as a dopant is adjusted or the residual stresses in glass layers are changed.
摘要翻译：本发明涉及一种易于制造的色散管理光纤，并且具有能够容易地与其他光纤等连接的结构。色散管理光纤是一种二氧化硅基光纤，其确保在信号波长带内的预定波长的单模，其中每个具有正色散的第一部分和每个具有负色散的第二部分交替排列，相邻。在色散管理的光纤中，掺杂剂浓度在纵向上均匀，并且对应于上述第一和第二部分，调整未掺杂有GeO 2作为掺杂剂的玻璃层的折射率或残余物玻璃层的应力发生变化。

4. 发明授权

US06618532B1 Optical transmission line 有权
标题翻译：光传输线
公开(公告)号：US06618532B1
公开(公告)日：2003-09-09
申请号：US09628510
申请日：2000-11-27
申请人： Eisuke Sasaoka , Shigeru Tanaka , Masayuki Nishimura , Shinji Ishikawa , Takatoshi Kato
发明人： Eisuke Sasaoka , Shigeru Tanaka , Masayuki Nishimura , Shinji Ishikawa , Takatoshi Kato
IPC分类号： G02B602
CPC分类号： G02B6/02009 , C03B37/01205 , C03B37/027 , C03B2203/18 , C03B2203/36 , C03B2205/40 , C03B2205/47 , G02B6/02242 , G02B6/03627 , G02B6/03644 , G02B6/29377 , H04B10/25253
摘要： An optical transmission line having reduced flunctions in transmission quality is formed with a structure in which first and second waveguides whose transmission characteristics at a predetermined wavelength in a wavelength band in use are set opposite to each other and are arranged alternately. The chromatic dispersion of the first and second waveguides are set so as to have signs opposite to each other, and the dispersion slope of the first and second waveguides are set so as to have signs opposite to each other. Embodiments include setting the absolute value of chromatic dispersion in each first waveguide to 1 ps/nm/km or more but 10 ps/nm/km or less, and the absolute value of chromatic dispersion in each second waveguide is set to 1 ps/nm/km or more but 10 ps/nm/km or less.
摘要翻译：具有传输质量降低的光传输线路的形成是这样的结构，其中在使用中的波长带中的预定波长的传输特性彼此相对设置并交替布置的第一和第二波导。将第一和第二波导的色散设定为具有彼此相反的符号，并且将第一和第二波导的色散斜率设定为具有彼此相反的符号。实施例包括将每个第一波导中的色散的绝对值设置为1ps / nm / km或更大但10ps / nm / km或更小，并且将每个第二波导中的色散的绝对值设置为1ps / nm / km以上，10ps / nm / km以下。

5. 发明授权

US06769822B2 Optical fiber composite and optical fiber cable and production method thereof 失效
标题翻译：光纤复合光纤电缆及其制造方法
公开(公告)号：US06769822B2
公开(公告)日：2004-08-03
申请号：US10041585
申请日：2002-01-10
申请人： Masayuki Nishimura , Shigeru Tanaka
发明人： Masayuki Nishimura , Shigeru Tanaka
IPC分类号： G02B6255
CPC分类号： G02B6/02247 , G02B6/02004 , G02B6/02261 , G02B6/02266 , G02B6/29377 , H04B10/25253
摘要： An optical fiber composite that can easily have a desired mean transmission property as a whole even after a length of optical fiber is cut off from one end or both ends, a cable comprising the composites, and methods for producing the composite and cable. An optical fiber composite 10 is produced by splicing a first optical fiber 11, a second optical fiber 12, and a third optical fiber 13 in this order. The first optical fiber 11 and the third optical fiber 13 each have a first chromatic dispersion, D1, at the wavelength of a signal-carrying lightwave. The second optical fiber 12 has a second chromatic dispersion, D2, at the wavelength of the signal-carrying lightwave. The third optical fiber has a length, L3, shorter than the length, L1, of the first optical fiber. It is desirable that the ratio L3/L1 be at most 0.1.
摘要翻译：即使从一端或两端切断长度的光纤，也可以容易地具有期望的平均透射特性的光纤复合体，包含该复合体的电缆以及复合电缆的制造方法。通过按顺序拼接第一光纤11，第二光纤12和第三光纤13来制造光纤复合体10。第一光纤11和第三光纤13在信号携带光波长的波长处都具有第一色散D1。第二光纤12在信号携带光波长的波长处具有第二色散D2。第三光纤具有比第一光纤的长度L1短的长度L3。理想的是，比率L3 / L1为0.1以下。

6. 发明授权

US06907171B2 Optical fiber composite and optical fiber cable and production method thereof 失效
标题翻译：光纤复合光纤电缆及其制造方法
公开(公告)号：US06907171B2
公开(公告)日：2005-06-14
申请号：US10893968
申请日：2004-07-20
申请人： Masayuki Nishimura , Shigeru Tanaka
发明人： Masayuki Nishimura , Shigeru Tanaka
IPC分类号： G02B6/02 , G02B6/34 , H04B10/2507 , H04B10/2525 , G02B6/16
CPC分类号： G02B6/02247 , G02B6/02004 , G02B6/02261 , G02B6/02266 , G02B6/29377 , H04B10/25253
摘要： An optical fiber composite that can easily have a desired mean transmission property as a whole even after a length of optical fiber is cut off from one end or both ends, a cable comprising the composites, and methods for producing the composite and cable. An optical fiber composite 10 is produced by splicing a first optical fiber 11, a second optical fiber 12, and a third optical fiber 13 in this order. The first optical fiber 11 and the third optical fiber 13 each have a first chromatic dispersion, D1, at the wavelength of a signal-carrying lightwave. The second optical fiber 12 has a second chromatic dispersion, D2, at the wavelength of the signal-carrying lightwave. The third optical fiber has a length, L3, shorter than the length, L1, of the first optical fiber. It is desirable that the ratio L3/L1 be at most 0.1.
摘要翻译：即使从一端或两端切断长度的光纤，也可以容易地具有期望的平均透射特性的光纤复合体，包含该复合体的电缆以及复合电缆的制造方法。通过按顺序拼接第一光纤11，第二光纤12和第三光纤13来制造光纤复合体10。第一光纤11和第三光纤13在信号携带光波长的波长处都具有第一色散D 1 1。第二光纤12在信号携带光波长的波长处具有第二色散D 2 2。第三光纤具有比第一光纤的长度L L1短的长度L 3 3。理想的是L 3 / L 1比为0.1以下。

7. 发明授权

US06724525B2 Raman amplifying control unit and optical transmission system 失效
标题翻译：拉曼放大控制单元和光传输系统
公开(公告)号：US06724525B2
公开(公告)日：2004-04-20
申请号：US09788659
申请日：2001-02-21
申请人： Toshiaki Okuno , Eisuke Sasaoka , Masayuki Nishimura , Shigeru Tanaka
发明人： Toshiaki Okuno , Eisuke Sasaoka , Masayuki Nishimura , Shigeru Tanaka
IPC分类号： H01S300
CPC分类号： H01S3/302 , H01S3/0014 , H01S3/06754 , H01S3/1301 , H01S3/1305
摘要： Disclosed are an optical transmission system and a Raman amplifying control unit that can stabilize the effective loss of a transmission line even if the optical transmission system has a relay station between a transmitting station and a receiving station. The optical transmission system and the Raman amplifying control unit have an introducing means for outputting inspection light and introducing it to the transmission line, a receiving means for receiving the back-scatter from the inspection light, and a control means for inspecting the transmission line and controlling an exciting light supplying means according to the received backscattering light. The introducing means, the receiving means, and the control means are provided together with the exciting light supplying means in a station at the transmitting side or receiving side of a relay section in the optical transmission system.
摘要翻译：公开了一种光传输系统和拉曼放大控制单元，其即使光传输系统在发射站和接收站之间具有中继站，也可以稳定传输线的有效损耗。光传输系统和拉曼放大控制单元具有用于输出检查光并将其引入传输线的引入装置，用于从检查光接收反向散射的接收装置和用于检查传输线的控制装置和根据所接收的反向散射光控制激励光供给装置。引导装置，接收装置和控制装置与光传输系统中的中继部的发送侧或接收侧的站中的激励光供给装置一起设置。

8. 发明授权

US06473546B2 Optical multiplexer/demultiplexer 失效
标题翻译：光复用器/解复用器
公开(公告)号：US06473546B2
公开(公告)日：2002-10-29
申请号：US09915292
申请日：2001-07-27
申请人： Makoto Katayama , Masayuki Nishimura , Shigeru Tanaka
发明人： Makoto Katayama , Masayuki Nishimura , Shigeru Tanaka
IPC分类号： G02B628
CPC分类号： G02B6/12011
摘要： The present invention relates to an AWG type optical multiplexer/demultiplexer having a small size in a state where cross talk is effectively restrained from increasing between adjacent channels. The optical multiplexer/demultiplexer is designed such that, in a power spectrum indicating a wavelength-transmission characteristic concerning an output light component from selected one of output waveguides disposed so as to correspond to respective signals having channel wavelengths set with a predetermined wavelength spacing, an adjacent channel wavelength exists within a wavelength region yielding an output light power lower than that at the channel wavelength corresponding to the selected one by 20 dB or more, whereby the cross talk between adjacent channels occurring as the optical multiplexer/demultiplexer attains a smaller size is effectively suppressed.
摘要翻译：本发明涉及一种具有小尺寸的AWG型光信号多路复用器/解复用器，其中有效抑制串扰在相邻信道之间增加的状态。光学多路复用器/解复用器被设计成使得在功率谱中，指示相对于具有以预定波长间隔设置的信道波长的各个信号而设置的输出波导的输出光分量的波长透射特性，相邻信道波长存在于波长区域内，产生比对应于所选择的信道波长低20dB或更大的信道波长的输出光功率，由此当作为光复用器/解复用器达到较小尺寸的相邻信道之间的串扰为有效抑制

9. 发明授权

US06424760B1 Optical multiplexer/demultiplexer 失效
标题翻译：光复用器/解复用器
公开(公告)号：US06424760B1
公开(公告)日：2002-07-23
申请号：US09750281
申请日：2000-12-29
申请人： Makoto Katayama , Masayuki Nishimura , Shigeru Tanaka
发明人： Makoto Katayama , Masayuki Nishimura , Shigeru Tanaka
IPC分类号： G02B628
CPC分类号： G02B6/12009
摘要： The present invention relates to an optical multiplexer/demultiplexer which ameliorates the deterioration in crosstalk characteristics between adjacent signal channels in a simpler configuration with a better reproducibility. In this optical multiplexer/demultiplexer, a space filled with cladding glass having a size which is at least three times the width or thickness of each channel waveguide is provided between the slab and channel waveguides. This configuration effectively improves the deterioration in crosstalk between adjacent signal channels on a par with the case where the slab and channel waveguides are directly connected to each other.
摘要翻译：本发明涉及一种光复用器/解复用器，其以更好的再现性在更简单的配置中改善相邻信号信道之间的串扰特性的恶化。在这种光复用器/解复用器中，在平板和通道波导之间提供了一个填充有包层玻璃的空间，其尺寸至少为每个通道波导的宽度或厚度的三倍。这种配置与板和通道波导彼此直接连接的情况相当，有效地改善了相邻信号通道之间串扰的恶化。

10. 发明授权

US06574397B2 Optical multiplexer/demultiplexer 有权
公开(公告)号：US06574397B2
公开(公告)日：2003-06-03
申请号：US09750282
申请日：2000-12-29
申请人： Makoto Katayama , Masayuki Nishimura , Shigeru Tanaka
发明人： Makoto Katayama , Masayuki Nishimura , Shigeru Tanaka
IPC分类号： G02B600
CPC分类号： G02B6/12009
摘要： The present invention relates to an optical multiplexer/demultiplexer comprising a structure for effectively lowering the crosstalk between adjacent signal channels, thereby realizing excellent wavelength multi/demultiplexing characteristics. The optical multiplexer/demultiplexer is designed such that, while adjacent channel waveguides are allowed to have optical path length differences different from each other, effective optical path length differences become constant between optical paths traveling by way of the channel waveguides adjacent each other in optical paths including slab waveguides as a whole, whereby the structure for connecting channel waveguides to flat connecting end faces of slab waveguides can be changed arbitrarily without being restricted by multi/demultiplexing conditions. As a result, it becomes easier to design the arrangement of channel waveguides, and their layout attains a higher degree of freedom, which makes it possible to design a structure for effectively lowering the crosstalk between adjacent signal channels.

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