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    • 2. 发明申请
    • Wavelength Division Multiplexed Passive Optical Network
    • 波分复用无源光网络
    • US20080279556A1
    • 2008-11-13
    • US12115046
    • 2008-05-05
    • Jianjun YuYuanqiu LuoJunqiang HuTing Wang
    • Jianjun YuYuanqiu LuoJunqiang HuTing Wang
    • H04J14/02
    • H04B10/2587H04J14/0282
    • Data is transmitted between a central office and customer premises by a wavelength division multiplex passive optical network. Two laser beams with separate wavelengths are transmitted from the central office to an optical network unit in the customer premises. Both laser beams carry downstream data. One laser beam is intensity modulated by on/off keying. The other laser beam is phase modulated by differential phase shift keying, which maintains a constant optical intensity. The first laser beam is received by a first optical receiver, which demodulates the first downstream data. The second laser beam is split in two. One laser beam is sent to a second optical receiver, which demodulates the second downstream data. The other laser beam is sent to a reflective semiconductor amplifier, which modulates the beam with upstream data and transmits the beam back to a receiver in the central optical system.
    • 数据通过波分复用无源光网络在中心局和客户驻地之间传输。 具有分离波长的两个激光束从中心局传输到客户驻地的光网络单元。 两个激光束都携带下行数据。 一个激光束通过开/关键控进行强度调制。 其他激光束通过差分相移键控进行相位调制,保持恒定的光强度。 第一激光束由第一光接收器接收,第一光接收器解调第一下行数据。 第二激光束分为两部分。 一个激光束被发送到第二光接收器,其解调第二下行数据。 另一个激光束被发送到反射半导体放大器,该反射半导体放大器利用上行数据对光束进行调制,并将光束传送回中央光学系统中的接收器。
    • 4. 发明授权
    • Wavelength division multiplexed passive optical network
    • 波分复用无源光网络
    • US08023824B2
    • 2011-09-20
    • US12115046
    • 2008-05-05
    • Jianjun YuYuanqiu LuoJunqiang HuTing Wang
    • Jianjun YuYuanqiu LuoJunqiang HuTing Wang
    • H04J14/00H04B10/00
    • H04B10/2587H04J14/0282
    • Data is transmitted between a central office and customer premises by a wavelength division multiplex passive optical network. Two laser beams with separate wavelengths are transmitted from the central office to an optical network unit in the customer premises. Both laser beams carry downstream data. One laser beam is intensity modulated by on/off keying. The other laser beam is phase modulated by differential phase shift keying, which maintains a constant optical intensity. The first laser beam is received by a first optical receiver, which demodulates the first downstream data. The second laser beam is split in two. One laser beam is sent to a second optical receiver, which demodulates the second downstream data. The other laser beam is sent to a reflective semiconductor amplifier, which modulates the beam with upstream data and transmits the beam back to a receiver in the central optical system.
    • 数据通过波分复用无源光网络在中心局和客户驻地之间传输。 具有分离波长的两个激光束从中心局传输到客户驻地的光网络单元。 两个激光束都携带下行数据。 一个激光束通过开/关键控进行强度调制。 其他激光束通过差分相移键控进行相位调制,保持恒定的光强度。 第一激光束由第一光接收器接收,第一光接收器解调第一下行数据。 第二激光束分为两部分。 一个激光束被发送到第二光接收器,其解调第二下行数据。 另一个激光束被发送到反射半导体放大器,该反射半导体放大器利用上行数据对光束进行调制,并将光束传送回中心光学系统中的接收器。