公开(公告)号：US08705969B2

公开(公告)日：2014-04-22

申请号：US13000459

申请日：2008-07-07

申请人： Byoung Whi Kim ,  Han Hyub Lee ,  Man Yong Park ,  Bong Tae Kim

发明人： Byoung Whi Kim ,  Han Hyub Lee ,  Man Yong Park ,  Bong Tae Kim

IPC分类号： H04J4/00

CPC分类号： H04B10/25754 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0232 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0282 ,  H04J2014/0253

摘要： An optical backhaul network for a wireless broadband service is provided. The optical backhaul network for a wireless broadband service includes: a plurality of optical network units for outputting an uplink optical signal having a multiplexed wavelength; an optical line termination for outputting a downlink optical signal of a single mode in order to transmit the downlink optical signal to the plurality of the optical network units in a broadcasting form; and a plurality of remote nodes for outputting a part of the downlink optical signal to the plurality of the optical network units and for outputting the uplink optical signal to the optical line termination. Therefore, one center and a plurality of access points can be efficiently connected.

摘要翻译： 提供了一种用于无线宽带服务的光回程网络。 用于无线宽带业务的光回程网络包括：多个光网络单元，用于输出具有复用波长的上行光信号; 光线路终端，用于输出单模的下行光信号，以便以广播形式将下行光信号发送到多个光网络单元; 以及多个远程节点，用于将所述下行链路光信号的一部分输出到所述多个光网络单元，并用于将所述上行链路光信号输出到所述光线路终端。 因此，可以有效地连接一个中心和多个接入点。

公开(公告)号：US20100150561A1

公开(公告)日：2010-06-17

申请号：US12625299

申请日：2009-11-24

申请人： Seung-hyun CHO ,  Byoung-shi KIM ,  Man-yong PARK

发明人： Seung-hyun CHO ,  Byoung-shi KIM ,  Man-yong PARK

IPC分类号： H04B10/06 ,  H04J14/02

CPC分类号： H04J14/02 ,  H04B10/695 ,  H04J14/0282 ,  H04J2014/0253

摘要： An optical receiver is provided which can be applied to a wavelength division multiplexing passive optical network (WDM PON) based on a reflective semiconductor optical amplifier employing a wavelength reuse scheme. The optical receiver includes a photo diode to convert an optical signal to an electrical signal; a pre-amplifier to linearly amplify the electrical signal and convert the amplified electrical signal to a voltage signal; a post-amplifier, which is equipped with a gain control function, to convert the voltage signal to a signal with a constant output level and to control a decision threshold of the converted signal; and an offset voltage generator to generate a predetermined offset voltage for the decision threshold control of the post-amplifier and to provide the offset voltage to the post-amplifier. Accordingly, it is possible to increase an extinction ratio of a downstream optical signal to a predetermined level in the WDM PON based on a reflective semiconductor optical amplifier employing a wavelength reuse scheme, and it is possible to reduce an optical power, which is received by the reflective semiconductor optical amplifier incorporated in a subscriber terminal, below a predetermined level. As a result, it is possible to improve transmission quality of the downstream and upstream optical signals.

摘要翻译： 提供了一种可以应用于采用波长重用方案的反射半导体光放大器的波分复用无源光网络（WDM PON）的光接收机。 光接收器包括用于将光信号转换成电信号的光电二极管; 前置放大器，用于线性放大电信号并将放大的电信号转换成电压信号; 具有增益控制功能的后置放大器将电压信号转换为具有恒定输出电平的信号并控制转换信号的判定阈值; 以及偏移电压发生器，以产生用于后置放大器的判定阈值控制的预定偏移电压并向后置放大器提供偏移电压。 因此，可以基于使用波长重用方案的反射型半导体光放大器，将WDM PON中的下行光信号的消光比提高到预定值，并且可以降低光功率，其由 结合在用户终端中的反射半导体光放大器低于预定电平。 结果，可以提高下游和上游光信号的传输质量。

公开(公告)号：US20110188858A1

公开(公告)日：2011-08-04

申请号：US13000459

申请日：2008-07-07

申请人： Byoung Whi Kim ,  Han Hyub Lee ,  Man Yong Park ,  Bong Tae Kim

发明人： Byoung Whi Kim ,  Han Hyub Lee ,  Man Yong Park ,  Bong Tae Kim

IPC分类号： H04J14/00

CPC分类号： H04B10/25754 ,  H04J14/0204 ,  H04J14/0209 ,  H04J14/0213 ,  H04J14/0216 ,  H04J14/0232 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0282 ,  H04J2014/0253

摘要： An optical backhaul network for a wireless broadband service is provided. The optical backhaul network for a wireless broadband service includes: a plurality of optical network units for outputting an uplink optical signal having a multiplexed wavelength; an optical line termination for outputting a downlink optical signal of a single mode in order to transmit the downlink optical signal to the plurality of the optical network units in a broadcasting form; and a plurality of remote nodes for outputting a part of the downlink optical signal to the plurality of the optical network units and for outputting the uplink optical signal to the optical line termination. Therefore, one center and a plurality of access points can be efficiently connected.

摘要翻译： 提供了一种用于无线宽带服务的光回程网络。 用于无线宽带业务的光回程网络包括：多个光网络单元，用于输出具有复用波长的上行光信号; 光线路终端，用于输出单模的下行光信号，以便以广播形式将下行光信号发送到多个光网络单元; 以及多个远程节点，用于将所述下行链路光信号的一部分输出到所述多个光网络单元，并用于将所述上行链路光信号输出到所述光线路终端。 因此，可以有效地连接一个中心和多个接入点。