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    • 2. 发明授权
    • Optical transmission system and dispersion compensator
    • 光传输系统和色散补偿器
    • US07116913B2
    • 2006-10-03
    • US10958277
    • 2004-10-06
    • Akira MiyauchiKazuo YamaneYumiko KawasakiSatoru Okano
    • Akira MiyauchiKazuo YamaneYumiko KawasakiSatoru Okano
    • H04B10/18
    • H04B10/25137H04B10/25133H04B2210/252
    • 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.
    • 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。
    • 6. 发明申请
    • METHOD FOR PRODUCING CARBON-FIBER-PRECURSOR ACRYLIC FIBER BUNDLE
    • 生产碳纤维前纤丙烯纤维布的方法
    • US20140115848A1
    • 2014-05-01
    • US14123361
    • 2012-05-31
    • Akira MiyauchiIsao OokiYukihiro MizutoriAkishige Tada
    • Akira MiyauchiIsao OokiYukihiro MizutoriAkishige Tada
    • D02J1/18D01H5/22D02J1/22
    • D02J1/227D01D11/02D01F6/18D01F9/22D01H5/22D02J1/18D02J1/222
    • A steam-drawing apparatus has supply roll 1 that transfers carbon-fiber-precursor acrylic fiber bundle (T) in a transfer direction of fiber bundle (T); fiber-opening device 2 for opening fiber bundle (T); width control device 3 for controlling the width of fiber bundle (T); steam box 4 to provide steam for heating fiber bundle (T) to a temperature that allows fiber bundle (T) to be drawn; and haul-off roll 5 that transfers fiber bundle (T) at a speed faster than that of supply roll 1. Using width control device 3 provided at a position between supply roll 1 and steam box 4, the width of fiber bundle (T) after passing through width control device 3 is set to be 65˜110% of the width of fiber bundle (T) before entering the supply roll. The present invention proposes a method for producing a carbon-fiber-precursor acrylic fiber bundle using such a steam-drawing apparatus capable of conducting a high-speed drawing process of carbon-fiber-precursor acrylic fiber bundles at a high draw rate with stable results.
    • 蒸汽拉伸装置具有在纤维束(T)的传送方向上传送碳纤维前体丙烯酸系纤维束(T)的供给辊1。 用于打开纤维束(T)的纤维开口装置2; 用于控制纤维束(T)的宽度的宽度控制装置3; 蒸汽箱4以提供用于将纤维束(T)加热到允许纤维束(T)被拉伸的温度的蒸汽; 以及以比供给辊1快的速度传递纤维束(T)的牵引辊5.使用设置在供给辊1和蒸汽箱4之间的位置的宽度控制装置3,纤维束(T) 在通过宽度控制装置3之后,在进入供给辊之前设定为纤维束(T)的宽度的65〜110%。 本发明提出一种使用这样的蒸汽拉伸装置制造碳纤维前体丙烯酸系纤维束的方法,能够以高拉伸速度进行碳纤维前体丙烯酸系纤维束的高速拉伸处理,结果稳定 。
    • 7. 发明授权
    • Optical transmission system and dispersion compensator
    • 光传输系统和色散补偿器
    • US07376361B2
    • 2008-05-20
    • US11523064
    • 2006-09-19
    • Akira MiyauchiKazuo YamaneYumiko KawasakiSatoru Okano
    • Akira MiyauchiKazuo YamaneYumiko KawasakiSatoru Okano
    • H04B10/18
    • H04B10/25137H04B10/25133H04B2210/252
    • 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.
    • 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。