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1. 发明授权

US5764404A Wavelength-division-multiplexing optical amplifier 失效
标题翻译：波分复用光放大器
公开(公告)号：US5764404A
公开(公告)日：1998-06-09
申请号：US508471
申请日：1995-07-28
申请人： Kazuo Yamane , Michikazu Shima , Yumiko Kawasaki , Kenji Tagawa , Shinya Inagaki , Norifumi Shukunami
发明人： Kazuo Yamane , Michikazu Shima , Yumiko Kawasaki , Kenji Tagawa , Shinya Inagaki , Norifumi Shukunami
IPC分类号： G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/10 , H01S3/13 , H01S3/17 , H04B10/07 , H04B10/2537 , H04B10/296 , H04J14/00 , H04J14/02 , H01S3/16 , H04B10/12
CPC分类号： H04B10/296 , H01S3/1301 , H04B10/291 , H04B10/2942 , H04J14/0221 , H01S2302/00 , H01S2303/00 , H01S3/094096
摘要： An optical amplifier amplifies a wavelength division-multiplexed optical input signal composed of optical signals having different wavelengths such that the output level of each of the optical signal is always optimized and such that the difference between the gains of the amplifier on the optical signals is minimized when the number of optical signals is two. The output level of the amplifier is controlled according to the number of the optical signals, to optimize the output level of each of the optical signals.
摘要翻译：光放大器放大由具有不同波长的光信号组成的波分复用光输入信号，使得每个光信号的输出电平始终被优化，并使得放大器在光信号上的增益之间的差最小化当光信号数为2时。根据光信号的数量控制放大器的输出电平，以优化每个光信号的输出电平。

2. 发明授权

US6061173A Wavelength-division-multiplexing optical amplifier 有权
标题翻译：波分复用光放大器
公开(公告)号：US6061173A
公开(公告)日：2000-05-09
申请号：US207829
申请日：1998-12-07
申请人： Kazuo Yamane , Michikazu Shima , Yumiko Kawasaki , Kenji Tagawa , Shinya Inagaki , Norifumi Shukunami
发明人： Kazuo Yamane , Michikazu Shima , Yumiko Kawasaki , Kenji Tagawa , Shinya Inagaki , Norifumi Shukunami
IPC分类号： H01S3/094 , H01S3/13 , H04B10/17 , H04J14/02 , G02B6/26
CPC分类号： H04B10/296 , H01S3/1301 , H04J14/0221 , H01S2302/00 , H01S2303/00 , H01S3/094096
摘要： An optical amplifier amplifies a wavelength-division-multiplexed optical input signal composed of optical signals having different wavelengths such that the output level of each of the optical signal is always optimized and such that the difference between the gains of the amplifier on the optical signals is minimized when the number of optical signals is two. The output level of the amplifier is controlled according to the number of the optical signals, to optimize the output level of each of the optical signals.
摘要翻译：光放大器放大由具有不同波长的光信号组成的波分复用光输入信号，使得每个光信号的输出电平始终被优化，并且使得放大器在光信号上的增益之间的差为光信号数为2时最小化。根据光信号的数量控制放大器的输出电平，以优化每个光信号的输出电平。

3. 发明授权

US5798857A Auxiliary-signal transmission system 失效
标题翻译：辅助信号传输系统
公开(公告)号：US5798857A
公开(公告)日：1998-08-25
申请号：US786692
申请日：1997-01-22
申请人： Yuji Tamura , Hiroyuki Itou , Tsukasa Takahashi , Michikazu Shima , Yumiko Kawasaki , Kazuo Yamane
发明人： Yuji Tamura , Hiroyuki Itou , Tsukasa Takahashi , Michikazu Shima , Yumiko Kawasaki , Kazuo Yamane
IPC分类号： H04B10/077 , H04B10/29 , H04B10/291 , H04B10/516 , H04B10/61 , H04B10/06
CPC分类号： H04B10/291 , H04B10/077 , H04B10/2912 , H04B10/2931 , H04B2210/078
摘要： Spontaneous emission occurring in association with direct optical amplification using an erbium-doped optical fiber is modulated with an auxiliary signal, such as a supervisory signal, for transmission of the auxiliary signal. In a first aspect of the invention, the output of an optical amplifier is passed through a variable optical band-pass filter whose transmission characteristic is varied in accordance with the auxiliary signal, to modulate the spontaneous emission component contained in the optical amplifier output. In a second aspect of the invention, the output of the optical amplifier is separated by an optical branching device into a main optical signal and part of the spontaneous emission. The separated spontaneous emission component is modulated by being passed through a variable optical band-pass filter whose transmission characteristic is varied in accordance with the auxiliary signal, and then, the modulated spontaneous emission component is wavelength-division multiplexed with the main optical signal.
摘要翻译：使用掺铒光纤与直接光放大相关联发生的自发发射用辅助信号（例如监控信号）进行调制，用于传输辅助信号。在本发明的第一方面中，光放大器的输出通过可变光带通滤波器，其传输特性根据辅助信号而变化，以调制光放大器输出中包含的自发发射分量。在本发明的第二方面中，光放大器的输出由光分支装置分离为主光信号和部分自发发射。分离的自发发射分量通过通过可变光带通滤波器进行调制，该可变光带通滤波器的传输特性根据辅助信号而变化，然后调制的自发发射分量与主光信号进行波分复用。

4. 发明授权

US5841558A Auxiliary-signal transmission system 失效
公开(公告)号：US5841558A
公开(公告)日：1998-11-24
申请号：US787391
申请日：1997-01-22
申请人： Yuji Tamura , Hiroyuki Itou , Tsukasa Takahashi , Michikazu Shima , Yumiko Kawasaki , Kazuo Yamane
发明人： Yuji Tamura , Hiroyuki Itou , Tsukasa Takahashi , Michikazu Shima , Yumiko Kawasaki , Kazuo Yamane
IPC分类号： H04B10/077 , H04B10/29 , H04B10/291 , H04B10/516 , H04B10/61 , H04B10/16
CPC分类号： H04B10/291 , H04B10/077 , H04B10/2912 , H04B10/2931 , H04B2210/078
摘要： Spontaneous emission occurring in association with direct optical amplification using an erbium-doped optical fiber is modulated with an auxiliary signal, such as a supervisory signal, for transmission of the auxiliary signal. In a first aspect of the invention, the output of an optical amplifier is passed through a variable optical band-pass filter whose transmission characteristic is varied in accordance with the auxiliary signal, to modulate the spontaneous emission component contained in the optical amplifier output. In a second aspect of the invention, the output of the optical amplifier is separated by an optical branching device into a main optical signal and part of the spontaneous emission. The separated spontaneous emission component is modulated by being passed through a variable optical band-pass filter whose transmission characteristic is varied in accordance with the auxiliary signal, and then, the modulated spontaneous emission component is wavelength-division multiplexed with the main optical signal.

5. 发明授权

US5680246A Optical amplifier and optical transmission apparatus 失效
标题翻译：光放大器和光传输装置
公开(公告)号：US5680246A
公开(公告)日：1997-10-21
申请号：US412290
申请日：1995-03-28
申请人： Tsukasa Takahashi , Hiroyuki Itou , Yuji Tamura , Michikazu Shima , Kazuo Yamane , Yumiko Kawasaki , Keisuke Imai , Yoshinori Ohkuma , Kazuhiro Suzuki , Yasunori Nagakubo , Takashi Tsuda , Yuji Miyaki
发明人： Tsukasa Takahashi , Hiroyuki Itou , Yuji Tamura , Michikazu Shima , Kazuo Yamane , Yumiko Kawasaki , Keisuke Imai , Yoshinori Ohkuma , Kazuhiro Suzuki , Yasunori Nagakubo , Takashi Tsuda , Yuji Miyaki
IPC分类号： H01S3/07 , H01S3/06 , H01S3/067 , H01S3/10 , H01S3/13 , H01S3/131 , H04B10/07 , H04B10/2507 , H04B10/29 , H04B10/293 , H04B10/564 , H04B10/572 , H01S3/00
CPC分类号： H04B10/564 , H01S3/1301 , H04B10/077 , H04B10/07955 , H04B10/2912 , H04B10/2931 , H01S3/06754
摘要： The optical amplifier includes a doped fiber doped with a rare earth element, a pumping light source, means for introducing signal light and pumping light into the doped fiber, detection means for detecting whether or not amplified signal light is included in light outputted from the doped fiber, and means for decreasing the intensity of the pumping light when it is detected that amplified signal light is not included. It can be possible to eliminate an influence of an optical surge arising from a characteristic of the doped fiber.
摘要翻译：光放大器包括掺杂有稀土元素的掺杂光纤，泵浦光源，用于将信号光和泵浦光引入掺杂光纤的装置，用于检测放大信号光是否包含在从掺杂光光纤，以及当检测到不包括放大信号光时降低泵浦光强度的装置。可以消除由掺杂光纤的特性引起的光学浪涌的影响。

6. 发明授权

US5625481A Auxiliary-signal transmission system 失效
标题翻译：辅助信号传输系统
公开(公告)号：US5625481A
公开(公告)日：1997-04-29
申请号：US388357
申请日：1995-02-14
申请人： Yuji Tamura , Hiroyuki Itou , Tsukasa Takahashi , Michikazu Shima , Yumiko Kawasaki , Kazuo Yamane
发明人： Yuji Tamura , Hiroyuki Itou , Tsukasa Takahashi , Michikazu Shima , Yumiko Kawasaki , Kazuo Yamane
IPC分类号： H04B10/077 , H04B10/29 , H04B10/291 , H04B10/516 , H04B10/61 , H04B10/16 , H01S3/00 , H04B10/02
CPC分类号： H04B10/291 , H04B10/077 , H04B10/2912 , H04B10/2931 , H04B2210/078
摘要： Spontaneous emission occurring in association with direct optical amplification using an erbium-doped optical fiber is modulated with an auxiliary signal, such as a supervisory signal, for transmission of the auxiliary signal. In a first aspect of the invention, the output of an optical amplifier is passed through a variable optical band-pass filter whose transmission characteristic is varied in accordance with the auxiliary signal, to modulate the spontaneous emission component contained in the optical amplifier output. In a second aspect of the invention, the output of the optical amplifier is separated by an optical branching device into a main optical signal and part of the spontaneous emission. The separated spontaneous emission component is modulated by being passed through a variable optical band-pass filter whose transmission characteristic is varied in accordance with the auxiliary signal, and then, the modulated spontaneous emission component is wavelength-division multiplexed with the main optical signal.
摘要翻译：使用掺铒光纤与直接光放大相关联发生的自发发射用辅助信号（例如监控信号）进行调制，用于传输辅助信号。在本发明的第一方面中，光放大器的输出通过可变光带通滤波器，其传输特性根据辅助信号而变化，以调制光放大器输出中包含的自发发射分量。在本发明的第二方面中，光放大器的输出由光分支装置分离为主光信号和部分自发发射。分离的自发发射分量通过通过可变光带通滤波器进行调制，该可变光带通滤波器的传输特性根据辅助信号而变化，然后调制的自发发射分量与主光信号进行波分复用。

7. 发明授权

US5870217A Multi-wavelength optical batch amplification apparatus 失效
标题翻译：多波长光学批量放大装置
公开(公告)号：US5870217A
公开(公告)日：1999-02-09
申请号：US799936
申请日：1997-02-13
申请人： Hiroyuki Itou , Kazuo Yamane , Michikazu Shima
发明人： Hiroyuki Itou , Kazuo Yamane , Michikazu Shima
IPC分类号： G02B27/10 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/10 , H01S3/17 , H04B10/07 , H04B10/27 , H04B10/29 , H04B10/296 , H04J14/00 , H04J14/02 , H04B10/16
CPC分类号： H04B10/2942 , H04B10/077 , H04B10/07955 , H04B10/2912 , H04B10/296 , H04J14/0221 , H04B2210/258
摘要： The invention provides a multi-wavelength optical batch amplification apparatus wherein, upon batch amplification of a multi-wavelength input optical signal, the powers of optical signals on the input and output sides of an optical amplifier are monitored totally or individually to control the powers of optical signals of the output optical signal of the optical amplifier so that they may be fixed equally. The apparatus includes an entire input light detection section for monitoring the power of the entire input optical signals on the input side of the optical amplifier, an individual output light detection section for monitoring the powers of the output optical signals on the output side of the optical amplifier, an optical amplifier output adjustment section for adjusting the output of the optical amplifier, and a control section for controlling the optical amplifier output adjustment section based on results of detection by the entire input light detection section and the individual output light detection section so that the powers of the output optical signals on the output side of the optical amplifier may be fixed equally.
摘要翻译：本发明提供了一种多波长光学批量放大装置，其中，在多波长输入光信号的批量放大时，光放大器的输入和输出侧的光信号的功率被完全或单独地监测，以控制功率光放大器的输出光信号的光信号，使得它们可以均匀地固定。该装置包括：整个输入光检测部，用于监视光放大器的输入侧的整个输入光信号的功率;个别输出光检测部，用于监视光输出侧的输出侧的输出光信号的功率; 放大器，用于调整光放大器的输出的光放大器输出调整部分，以及用于根据整个输入光检测部分和各输出光检测部分的检测结果控制光放大器输出调节部分的控制部分，光放大器的输出侧的输出光信号的功率可以相等地固定。

8. 发明授权

US07376361B2 Optical transmission system and dispersion compensator 失效
标题翻译：光传输系统和色散补偿器
公开(公告)号：US07376361B2
公开(公告)日：2008-05-20
申请号：US11523064
申请日：2006-09-19
申请人： Akira Miyauchi , Kazuo Yamane , Yumiko Kawasaki , Satoru Okano
发明人： Akira Miyauchi , Kazuo Yamane , Yumiko Kawasaki , Satoru Okano
IPC分类号： H04B10/18
CPC分类号： H04B10/25137 , H04B10/25133 , H04B2210/252
摘要： In an optical transmission system comprising a transmitter, a receiver, and a transmission line that connects the transmitter and the receiver, a dispersion compensator is disposed in the receiver. The transmitter comprises an E/O (electro-optical signal converter) and a post-amplifier. An optical signal that has been RZ-coded is supplied to the E/O. The transmitter pre-chirps the optical signal. The pre-chirp is performed by red-chirp of which the value of the chirping parameter α is positive. When the pre-chirp is performed, the non-linear effect of the optical signal on the transmission line can be canceled. In addition, with the RZ coded signal, the inter-symbol interference can be alleviated. Thus, the total dispersion amount of the dispersion compensator can be suppressed. In addition, the power of the optical output can be increased.
摘要翻译：在包括发射机，接收机和连接发射机和接收机的传输线的光传输系统中，在接收机中设置色散补偿器。发射机包括E / O（电光信号转换器）和后置放大器。经RZ编码的光信号被提供给E / O。发射机预啁啾光信号。前线啁啾由啁啾声执行，啁啾参数α的值为正。当进行前啁啾时，可以消除光信号在传输线上的非线性效应。另外，利用RZ编码信号，可以减轻符号间干扰。因此，可以抑制色散补偿器的总色散量。另外，可以提高光输出的功率。

9. 发明申请

US20060285856A1 Optical transmission system using in-line amplifiers 有权
公开(公告)号：US20060285856A1
公开(公告)日：2006-12-21
申请号：US11508949
申请日：2006-08-24
申请人： Akira Miyauchi , Kazuo Yamane , Yumiko Kawasaki , Satoru Okano
发明人： Akira Miyauchi , Kazuo Yamane , Yumiko Kawasaki , Satoru Okano
IPC分类号： H04B10/12
CPC分类号： H04B10/25137 , H01L31/14 , H04B10/2543 , H04B2210/252 , H04B2210/256
摘要： In a system connecting a transmitter and a receiver using transmission paths and repeaters (in-line amplifiers), red chirping whose α parameter is performed for an optical signal on a transmitting side. Each of the repeaters includes a dispersion-compensator for compensating the amount of dispersion on a preceding transmission path. The amount of dispersion compensation of the dispersion-compensator included in the transmitter is made constant. The dispersion-compensator included in the receiver is arranged in order to compensate the amount of dispersion on a preceding transmission path. A spread of a pulse width on a transmission path can be efficiently compensated by using the compensation capability of the dispersion-compensators and the red chirping on the transmitting side.

10. 发明授权

US07006769B1 Method for optical fiber communication, and device and system for use in carrying out the method 失效
标题翻译：光纤通信方法，以及用于实施该方法的设备和系统
公开(公告)号：US07006769B1
公开(公告)日：2006-02-28
申请号：US09256079
申请日：1999-02-24
申请人： Yumiko Kawasaki , Kazuo Yamane , Takashi Tsuda , Satoru Okano
发明人： Yumiko Kawasaki , Kazuo Yamane , Takashi Tsuda , Satoru Okano
IPC分类号： H04B10/00 , H04B10/12
CPC分类号： H04B10/2525 , G02F1/0121 , G02F1/0123 , G02F2203/25 , H04B10/0775 , H04B10/07953 , H04B10/0799 , H04B2210/077 , H04B2210/252 , H04B2210/254
摘要： The invention, relates to a method for optical fiber communication. An optical signal having chirping determined by a chirp parameter is output to an optical fiber transmission line. The optical signal transmitted by the optical fiber transmission line is converted into an electrical signal. A bit error of the electrical signal is detected. Then, the chirp parameter is controlled so that the bit error detected above is reduced. According to this method, the chirp parameter is controlled so that the bit error detected is reduced. Accordingly, a chirping occurring in the optical fiber transmission line can be suppressed by the chirping of the optical signal to be output to the optical fiber transmission line, thereby compensating for chromatic dispersion and nonlinearity.
摘要翻译：本发明涉及一种光纤通信方法。将具有由啁啾参数确定的啁啾的光信号输出到光纤传输线。由光纤传输线传输的光信号被转换为电信号。检测到电信号的位错误。然后，控制啁啾参数，使得上面检测到的位错误减少。根据该方法，控制啁啾参数，使得检测到的位错误减少。因此，可以通过对输出到光纤传输线的光信号的线性调频来抑制在光纤传输线中发生的线性调频，从而补偿色散和非线性。

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