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    • 6. 发明授权
    • Optical signal receiving apparatus and method using the same
    • 光信号接收装置及其使用方法
    • US06822214B2
    • 2004-11-23
    • US10283946
    • 2002-10-30
    • Jin-Soo HanMoo-Jung ChuJong-Hyun Lee
    • Jin-Soo HanMoo-Jung ChuJong-Hyun Lee
    • H01J4014
    • H04B10/697
    • Provided are an optical signal receiving apparatus whose optimum receiving performance is maintained regardless of a change in the power of an optical signal, and a method using the same. The apparatus includes an optical coupler for dividing an input optical signal at a predetermined ratio to produce first and second divided signals, a photoelectric converter for converting the first divided signal into an electric signal, an amplifier for amplifying the electric signal within a predetermined range centering on a reference voltage, a reference voltage controlling unit for detecting the power of the second divided signal, predicting the power of the first divided signal, and controlling the amplitude of the reference voltage in accordance with the predicted power, and a clock & data recovery unit for recovering a clock signal and data from a signal output from the amplifier. Even if the power of an optical signal changes, the reference voltage of a limiting amplifier, which is best suitable for optimum performance with respect to the power of an input optical signal, can be detected and adjusted using the method and apparatus, thereby maintaining the optimum receiving performance of the optical signal receiving apparatus.
    • 提供了一种光信号接收装置及其使用方法的光接收装置,其优良的接收性能被保持,而与光信号的功率的变化无关。 该装置包括用于以预定比例分割输入光信号以产生第一和第二分频信号的光耦合器,用于将第一划分信号转换为电信号的光电转换器,用于在预定范围内放大电信号的放大器对中 在参考电压上,参考电压控制单元,用于检测第二分频信号的功率,预测第一分频信号的功率,并根据预测功率控制参考电压的振幅;以及时钟和数据恢复 用于从放大器输出的信号中恢复时钟信号和数据的单元。 即使光信号的功率发生变化,也可以使用该方法和装置来检测和调整限制放大器的参考电压,该极限放大器最适合于对于输入光信号的功率的最佳性能,从而保持 光信号接收装置的最佳接收性能。
    • 7. 发明申请
    • System for monitoring optical output/wavelength
    • 监控光输出/波长的系统
    • US20050046868A1
    • 2005-03-03
    • US10802095
    • 2004-03-15
    • Jong-Deog KimByung-Seok ChoiJong-Hyun LeeHogyeong YunKwang-Seong ChoiJong-Tae Moon
    • Jong-Deog KimByung-Seok ChoiJong-Hyun LeeHogyeong YunKwang-Seong ChoiJong-Tae Moon
    • H04B10/08G01B9/02G02B6/34H01S5/024H01S5/0683
    • H01S5/0612H01S5/0683H01S5/0687
    • A system for monitoring an optical output/wavelength is employed to be used for a WDM system having a narrow channel space by structuring an etalon and photodiode as an integrated structure. The system includes: a laser source control unit for controlling the laser source; an optical/wavelength monitoring unit for monitoring an optical output/wavelength of the controlled laser source; a TEC control unit for controlling a TEC in order to constantly maintain the laser source of the optical output/wavelength monitoring unit to have a predetermined temperature; a temperature control unit for controlling a heater and a thermistor to set an etalon to a predetermined temperature, wherein the heater is attached on the optical output/wavelength monitoring unit and the thermistor is attached on the heater; a comparison unit for comparing the optical output signal and the wavelength signal, each of which is monitored by the optical output/wavelength monitoring unit; and a processing unit for comparing values of the compared signals with a preset value to control an input current or a temperature of the laser source.
    • 用于监测光输出/波长的系统被用于通过构造标准具和光电二极管作为一体结构而具有窄通道空间的WDM系统。 该系统包括:用于控制激光源的激光源控制单元; 用于监测受控激光源的光输出/波长的光/波长监测单元; 用于控制TEC的TEC控制单元,以便将光输出/波长监视单元的激光源恒定地保持为预定温度; 温度控制单元,用于控制加热器和热敏电阻以将标准具设定到预定温度,其中加热器安装在光输出/波长监测单元上,热敏电阻附着在加热器上; 比较单元,用于比较光输出信号和波长信号,每个波长信号由光输出/波长监测单元监视; 以及处理单元,用于将比较的信号的值与预设值进行比较,以控制激光源的输入电流或温度。
    • 8. 发明授权
    • System for monitoring optical output/wavelength
    • 监控光输出/波长的系统
    • US07009716B2
    • 2006-03-07
    • US10802095
    • 2004-03-15
    • Jong-Deog KimByung-Seok ChoiJong-Hyun LeeHogyeong YunKwang-Seong ChoiJong-Tae Moon
    • Jong-Deog KimByung-Seok ChoiJong-Hyun LeeHogyeong YunKwang-Seong ChoiJong-Tae Moon
    • G01B9/02H01S3/04
    • H01S5/0612H01S5/0683H01S5/0687
    • A system for monitoring an optical output/wavelength is employed to be used for a WDM system having a narrow channel space by structuring an etalon and photodiode as an integrated structure. The system includes: a laser source control unit for controlling the laser source; an optical/wavelength monitoring unit for monitoring an optical output/wavelength of the controlled laser source; a TEC control unit for controlling a TEC in order to constantly maintain the laser source of the optical output/wavelength monitoring unit to have a predetermined temperature; a temperature control unit for controlling a heater and a thermistor to set an etalon to a predetermined temperature, wherein the heater is attached on the optical output/wavelength monitoring unit and the thermistor is attached on the heater; a comparison unit for comparing the optical output signal and the wavelength signal, each of which is monitored by the optical output/wavelength monitoring unit; and a processing unit for comparing values of the compared signals with a preset value to control an input current or a temperature of the laser source.
    • 用于监测光输出/波长的系统被用于通过构造标准具和光电二极管作为一体结构而具有窄通道空间的WDM系统。 该系统包括:用于控制激光源的激光源控制单元; 用于监测受控激光源的光输出/波长的光/波长监测单元; 用于控制TEC的TEC控制单元,以便将光输出/波长监视单元的激光源恒定地保持为预定温度; 温度控制单元,用于控制加热器和热敏电阻以将标准具设定到预定温度,其中加热器安装在光输出/波长监测单元上,热敏电阻附着在加热器上; 比较单元,用于比较光输出信号和波长信号,每个波长信号由光输出/波长监测单元监视; 以及处理单元,用于将比较的信号的值与预设值进行比较,以控制激光源的输入电流或温度。