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    • 4. 发明授权
    • Planar waveguide-type optical amplifier switch
    • 平面波导型光放大器开关
    • US06538804B1
    • 2003-03-25
    • US09433455
    • 1999-11-04
    • Kyong Hon KimYong Gyu ChoiHak Kyu LeeMin Yong JeonJoon Tae AhnDong Sung LimHo Young KimDo Il Chang
    • Kyong Hon KimYong Gyu ChoiHak Kyu LeeMin Yong JeonJoon Tae AhnDong Sung LimHo Young KimDo Il Chang
    • H01S300
    • G02F1/3132G02F1/225H01S5/4068H01S5/50
    • A planar waveguide-type optical amplifier switch is disclosed. The switch is developed with the purpose of solving the problems that the conventional waveguide-type optical switch, which has been being used in the optical communication technique, has an optical loss and thereby requires an external optical amplifier which makes the whole devices not suitable for forming an integrated compact device. The disclosed switch performs switching function from the refractive index change in the optical waveguides induced by electrical or optical controls as well as amplifying function of the optical signal, when it passes through the waveguides, from use of optical waveguides formed of a fluorescence emitting material with an optical pumping and a wavelength division multiplexing (WDM) optical waveguide-type coupler. The optical amplifier switch scheme, which provides a simultaneous optical switching and amplification in an optical waveguide form, allows the device fabricable in a compact integrated manner and more useful in practical applications. The optical amplifier switch in accordance with the present invention can replace the conventional optical switches of the prior art, and can promote technical development in the areas of high-capacity optical communication systems, massive optical signal processing, optical switching, optical computing, and so on.
    • 公开了一种平面波导型光放大器开关。 开关是为了解决在光通信技术中使用的常规波导型光开关具有光损耗并因此需要外部光放大器的问题而开发的,这使得整个器件不适合于 形成集成的紧凑型装置。 所公开的开关从通过电光或光控制引起的光波导中的折射率变化执行切换功能,以及当光信号通过波导时放大功能,使用由荧光发射材料形成的光波导与 光泵浦和波分复用(WDM)光波导型耦合器。 提供光波导形式的同时光切换和放大的光放大器开关方案允许该器件以紧凑的集成方式可制造并且在实际应用中更有用。 根据本发明的光放大器开关可以代替现有技术的传统光开关,并且可以促进大容量光通信系统,大规模光信号处理,光交换,光计算等领域的技术发展。 上。
    • 8. 发明授权
    • Optical fiber Mach-Zehnder interferometer filter
    • 光纤马赫 - 曾德尔干涉仪滤波器
    • US6160627A
    • 2000-12-12
    • US315998
    • 1999-05-21
    • Joon Tae AhnHak Kyu LeeMin Yong JeonDong Sung LimKyong Hon KimEl Hang Lee
    • Joon Tae AhnHak Kyu LeeMin Yong JeonDong Sung LimKyong Hon KimEl Hang Lee
    • G02B6/34G01B9/02
    • G02B6/29353
    • An optical fiber Mach-Zehnder interferometer optical filter is disclosed. The filter includes a stabilization light source for varying a first wavelength of a light signal for stabilizing a Mach-Zehnder interferometer, first and second optical fiber couplers for receiving an optical signal from the stabilization light source and an optical signal of a second wavelength different from a first wavelength inputted from an input port and dividing into two parts having the same intensity for thereby forming a Mach-Zehnder interferometer, a polarization controller connected with one side of the first optical fiber coupler for controlling a polarization of the interfered light of the interferometer, first and second wavelength division multiplex optical couplers connected with the second optical fiber coupler for separately outputting a first wavelength optical signal and a second wavelength optical signal, an optical fiber phase modulator connected with the other side of the first optical fiber coupler for varying the length of the optical fiber in accordance with a fed-back phase difference, and a stabilization circuit for receiving two optical signals of the first wavelength from the first and second wavelength division multiplex optical couplers and feeding back the phase difference to the optical fiber phase modulator for thereby implementing a constant optical path difference of the interferometer.
    • 公开了一种光纤马赫 - 曾德干涉仪滤光器。 滤光器包括用于改变用于稳定马赫 - 曾德干涉仪的光信号的第一波长的稳定光源,用于从稳定光源接收光信号的第一和第二光纤耦合器以及不同于 从输入端口输入的第一波长并分成具有相同强度的两个部分,从而形成马赫 - 策德尔干涉仪;偏振控制器,与第一光纤耦合器的一侧连接,用于控制干涉仪的干涉光的偏振 与第二光纤耦合器连接的第一和第二波分复用光耦合器,用于分别输出第一波长光信号和第二波长光信号;光纤相位调制器,与第一光纤耦合器的另一侧连接,用于改变 根据光纤的长度 反馈相位差,以及稳定电路,用于从第一和第二波分复用光耦合器接收第一波长的两个光信号,并将相位差反馈到光纤相位调制器,从而实现恒定的光程差 的干涉仪。