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1. 发明申请

US20060228117A1 Optical transmission device and optical transmission system 审中-公开
标题翻译：光传输装置及光传输系统
公开(公告)号：US20060228117A1
公开(公告)日：2006-10-12
申请号：US10554952
申请日：2005-01-14
申请人： Sachiko Takeuchi , Susumu Kirii , Kazuhiro Nojima
发明人： Sachiko Takeuchi , Susumu Kirii , Kazuhiro Nojima
IPC分类号： H04B10/04
CPC分类号： H04J14/0282 , H04B10/504 , H04B10/505 , H04J14/0226 , H04J14/0234
摘要： The subject of the present invention is to provide an optical transmitting device and an optical transmission system, capable of realizing an increase of multiple channels and an extension of a transmission distance at a low cost. In the present invention, the external modulation process is applied to a first optical signal (λ1), which is modulated by a transmission signal on a low frequency side for which low noise and distortion characteristics are required, out of the wideband frequency multiplexing electric signals by a first E/O converting unit (22). In contrast, the direct modulation process is applied to a second optical signal (λ2), which is modulated by a transmission signal on a high frequency side whose request for the transmission characteristic is not so high, by a second E/O converting unit (24) to execute an E/O conversion. As a result, an optical transmitting device and an optical transmission system, capable of realizing an increase of frequency range and multiple channels and an extension of a transmission distance can be manufactured at a low cost.
摘要翻译：本发明的主题是提供一种能够以低成本实现多个信道的增加和传输距离的扩展的光发送装置和光传输系统。在本发明中，外部调制处理被应用于宽带频率复用电路中的由低频侧的需要低噪声和失真特性的低频侧的发送信号调制的第一光信号（λ1）信号由第一E / O转换单元（22）发送。相反，通过第二E / O转换单元将直接调制处理应用于由传输特性的请求不高的高频侧的发送信号调制的第二光信号（λ2）（24）执行E / O转换。结果，可以以低成本制造能够实现频率范围和多个信道的增加以及传输距离的扩展的光发送装置和光传输系统。

2. 发明授权

US06748173B2 Optical transmission system and optical transmission apparatus used therefor 失效
标题翻译：用于其的光传输系统和光传输装置
公开(公告)号：US06748173B2
公开(公告)日：2004-06-08
申请号：US09757254
申请日：2001-01-09
申请人： Yoshikazu Ishii , Susumu Kirii , Hideto Takahashi , Kuniharu Itakura , Shinshi Kuno
发明人： Yoshikazu Ishii , Susumu Kirii , Hideto Takahashi , Kuniharu Itakura , Shinshi Kuno
IPC分类号： H04J1402
CPC分类号： H04B10/697
摘要： Optical transmission being performed by frequency modulating frequency-division-multiplexed multi-channel signals as a single unit, distortion that is caused by a ripple-shaped group delay deviation in a transmitter 2, a receiver 4 and an optical link 3 is reduced by providing a level adjuster 2a for adjusting the level of frequency-division-multiplexed multi-channel signals input to the FM modulator 2b, and by increasing the input level of multi-channel signals to the FM modulator 2b by level adjusting means 2a to enlarge the bandwidth of FM signal, in the case where the number of channels is small.
摘要翻译：通过频率调制分频多路复用多通道信号作为单个单元执行光传输，通过提供发射机2，接收机4和光链路3中的波纹状组延迟偏差引起的失真减少电平调节器2a，用于调节输入到FM调制器2b的分频多路复用多通道信号的电平，以及通过电平调整装置2a将调制器2b的多声道信号的输入电平增大到放大带宽的FM信号，在通道数量少的情况下。

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