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1. 发明授权

US07110648B2 Analog optical transmission system 有权
公开(公告)号：US07110648B2
公开(公告)日：2006-09-19
申请号：US11211097
申请日：2005-08-25
申请人： Toshiyuki Miyamoto , Tetsufumi Tsuzaki , Tatsuhiko Shitomi
发明人： Toshiyuki Miyamoto , Tetsufumi Tsuzaki , Tatsuhiko Shitomi
IPC分类号： G02B6/02 , H04J14/02 , H01S3/00
CPC分类号： H04B10/25253
摘要： The present invention relates to an analog optical transmission system having a construction for expanding an analog transmittable distance. The analog optical transmission system includes: a light transmitter outputting analog optical signals such as image signals modulated in accordance with electrical signals multiplexed on a frequency domain; a transmission line including a SMF of 20 km or less in the total length; and a light receiver. A dispersion compensating fiber compensating for the chromatic dispersion of the transmission line is arranged on the transmission line, and the dispersion compensating fiber satisfies one of the first condition that the chromatic dispersion is set at −250 ps/nm/km or less and a length is set at 1.1 km or less, and the condition that the chromatic dispersion is set at −330 ps/nm/km or less and a length is set at 1.2 km or less. Optical suppressing devices reducing the MPI noise are arranged at the end portion of the dispersion compensating fiber.

2. 发明申请

US20060045534A1 Analog optical transmission system 有权
标题翻译：模拟光传输系统
公开(公告)号：US20060045534A1
公开(公告)日：2006-03-02
申请号：US11211097
申请日：2005-08-25
申请人： Toshiyuki Miyamoto , Tetsufumi Tsuzaki , Tatsuhiko Shitomi
发明人： Toshiyuki Miyamoto , Tetsufumi Tsuzaki , Tatsuhiko Shitomi
IPC分类号： H04B10/12
CPC分类号： H04B10/25253
摘要： The present invention relates to an analog optical transmission system having a construction for expanding an analog transmittable distance. The analog optical transmission system includes: a light transmitter outputting analog optical signals such as image signals modulated in accordance with electrical signals multiplexed on a frequency domain; a transmission line including a SMF of 20 km or less in the total length; and a light receiver. A dispersion compensating fiber compensating for the chromatic dispersion of the transmission line is arranged on the transmission line, and the dispersion compensating fiber satisfies one of the first condition that the chromatic dispersion is set at −250 ps/nm/km or less and a length is set at 1.1 km or less, and the condition that the chromatic dispersion is set at −330 ps/nm/km or less and a length is set at 1.2 km or less. Optical suppressing devices reducing the MPI noise are arranged at the end portion of the dispersion compensating fiber.
摘要翻译：本发明涉及具有扩展模拟可传送距离的结构的模拟光传输系统。模拟光传输系统包括：光发射机，输出模拟光信号，例如根据在频域上复用的电信号调制的图像信号; 包括总长度为20公里以下的SMF的传输线; 和光接收器。补偿传输线色散的色散补偿光纤布置在传输线上，色散补偿光纤满足色散设置在-250ps / nm / km或更小的第一条件和长度设定为1.1km以下，色散设定为-330ps / nm / km以下，长度设定为1.2km以下的条件。降低MPI噪声的光抑制装置布置在色散补偿光纤的端部。

3. 发明授权

US07027215B2 Optical component, optical amplification module, and optical transmission system 失效
标题翻译：光学元件，光放大模块和光传输系统
公开(公告)号：US07027215B2
公开(公告)日：2006-04-11
申请号：US10654987
申请日：2003-09-05
申请人： Hitoshi Hatayama , Motoki Kakui , Tatsuhiko Shitomi , Masayuki Shigematsu
发明人： Hitoshi Hatayama , Motoki Kakui , Tatsuhiko Shitomi , Masayuki Shigematsu
IPC分类号： H01S3/00 , G02B6/26
CPC分类号： H04B10/2941 , G02F1/0147 , G02F1/225 , H04B2210/003
摘要： The present invention relates to an optical component and others in structure capable of implementing improved compensation for a gain slope. The optical component is equipped with first and second Mach-Zehnder interferometers. The first Mach-Zehnder interferometer is provided with a first temperature controller for controlling a temperature of at least one of a part of an optical main path and a first optical side path, while the second Mach-Zehnder interferometer 42 is also provided with a second temperature controller for controlling a temperature of at least one of a part of the optical main path and a second optical side path. A filter circuit having a wavelength-dependent insertion loss is disposed between the first and second Mach-Zehnder interferometers, and a controller controls the temperatures of the optical paths by use of the first and second temperature controllers on the basis of the insertion loss of the filter circuit, thereby setting a loss for light of a predetermined wavelength propagating between a light input end and a light output end.
摘要翻译：本发明涉及能够对增益斜率进行改进补偿的结构的光学部件等。光学元件配备有第一和第二马赫 - 曾德尔干涉仪。第一马赫 - 策德尔干涉仪设置有用于控制光学主路径的一部分和第一光学侧路径中的至少一个的温度的第一温度控制器，而第二马赫 - 策德尔干涉仪42还设置有第二温度控制器，用于控制光学主路径的一部分和第二光学侧路径中的至少一个的温度。具有波长依赖性插入损耗的滤波器电路设置在第一和第二马赫 - 策德尔干涉仪之间，并且控制器基于第一和第二温度控制器的插入损耗来控制光路的温度滤光器电路，从而设定在光输入端和光输出端之间传播的预定波长的光的损耗。

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