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    • 2. 发明授权
    • Apparatus and method for wavelength conversion and clock signal extraction using semiconductor optical amplifiers
    • 使用半导体光放大器进行波长转换和时钟信号提取的装置和方法
    • US07277222B2
    • 2007-10-02
    • US11491646
    • 2006-07-24
    • Dong Churl KimMin Yong JeonYoung Ahn LeemEun Deok SimKyung Hyun ParkSung Bock Kim
    • Dong Churl KimMin Yong JeonYoung Ahn LeemEun Deok SimKyung Hyun ParkSung Bock Kim
    • H01S3/00
    • H04B10/299
    • Provided is an apparatus and method for simultaneous optical wavelength conversion and optical clock signal extraction using semiconductor optical amplifiers (SOAs). The apparatus includes: a wavelength converter receiving a pump beam having input information and a probe beam having a different wavelength from the pump beam, and outputting the pump beam with an overshoot shifted to a red wavelength and an undershoot shifted to a blue wavelength due to non-linear characteristics and self-phase modulation of semiconductor optical amplifiers (SOAs) and the probe beam delivered the input information from the pump beam; an optical divider dividing output paths of the probe beam to which the input information has been delivered and the pump beam having the overshoot and the undershoot; a converted-wavelength extractor filtering the probe beam received from the optical divider; and a clock data regenerator obtaining a pseudo return-to-zero (PRZ) signal from the pump beam received from the optical divider and extracting a clock signal from the PRZ signal.The apparatus and method can simultaneously perform wavelength conversion and optical clock signal extraction on an NRZ signal using an optical method, without converting the NRZ signal into an electrical signal.
    • 提供了一种使用半导体光放大器(SOA)同时进行光波长转换和光时钟信号提取的装置和方法。 该装置包括:波长转换器,其接收具有输入信息的泵浦光束和具有与泵浦光束不同的波长的探测光束,并且由于偏移到红色波长的过冲和由于由于 半导体光放大器(SOA)的非线性特性和自相位调制以及探测光束从泵浦光束传送输入信息; 分割器分割输入信息已被传送到的探测光束的输出路径和具有过冲和下冲的泵浦光束; 转换波长提取器对从分光器接收的探测光束进行滤波; 以及时钟数据再生器,从从光分路器接收的泵浦光束获得伪归零(PRZ)信号,并从PRZ信号提取时钟信号。 该装置和方法可以使用光学方法在NRZ信号上同时进行波长转换和光时钟信号提取,而不将NRZ信号转换成电信号。
    • 6. 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 mode-locked laser
    • 光纤锁模激光器
    • US06385216B1
    • 2002-05-07
    • US09439595
    • 1999-11-12
    • Do Il ChangHo Young KimKyong Hon KimMin Yong Jeon
    • Do Il ChangHo Young KimKyong Hon KimMin Yong Jeon
    • H01S3067
    • H01S3/067H01S3/06712H01S3/09415H01S3/1112
    • An optical fiber mode-locked laser is disclosed. The laser comprises a gain medium doped optical fiber to achieve a population inversion between high and low energy levels by a pump light source and to oscillate optical waves in sequence, a cholesteric liquid crystal circular polarization mirror to transmit the waves from the pump light source and to be operated as a circular polarization reflection mirror for the oscillated optical waves from the gain medium doped optical fiber, a polarization controller to control the polarization state of the proceeding light which is oscillated from the gain medium doped optical fiber, a dispersion shifted fiber to give a non-linear effect to the proceeding light through the polarization controller, and an optical fiber laser output mirror which forms a resonator by putting out some portion of the proceeding light by transmission and reflecting the other portion of the light. With the present invention, one can effectively produce an ultrashort pulse with a simple structure and a few parts thereby improve an economic competence.
    • 公开了一种光纤锁模激光器。 激光器包括增益介质掺杂光纤,以通过泵浦光源实现高能量和低能量之间的群体反转,并且依次振荡光波;胆甾型液晶圆偏振镜,用于传输来自泵浦光源的波;以及 作为用于来自增益介质掺杂光纤的振荡光波的圆偏振反射镜,用于控制从增益介质掺杂光纤振荡的行进光的偏振状态的偏振控制器,将色散位移光纤 对通过偏振光控制器的行进光进行非线性效应,以及光纤激光输出反射镜,其通过透射并反射光的另一部分而放出进行中的一部分光而形成谐振器。 利用本发明,可以有效地生产具有简单结构和少量零件的超短脉冲,从而提高经济能力。
    • 9. 发明授权
    • Mode-locked fiber laser and fiber amplifier using single pump laser
    • 锁模光纤激光器和光纤放大器采用单泵激光器
    • US06298074B1
    • 2001-10-02
    • US09491172
    • 2000-01-25
    • Min Yong JeonHak Kyu LeeSeung Beom KangKyong Hon Kim
    • Min Yong JeonHak Kyu LeeSeung Beom KangKyong Hon Kim
    • H01S330
    • H04B10/25077H01S3/06754H01S3/094003H01S3/1112H01S2301/085
    • A mode-locked fiber laser and a fiber amplifier using a single pump laser, the fiber laser using a pump source to generate soliton optical short pulse and the fiber amplifier amplifying the optical short pulse. The mode-locked fiber laser and fiber amplifier use a single pump laser in accordance with an embodiment of the present invention that includes a tunable directional coupler, a mode-locked fiber laser, and an optical amplifier. The tunable directional coupler is connected to the pump source. The mode-locked fiber laser receives the pump output of the pump source and generates a soliton optical pulse. The mode-locked fiber laser is connected to an output port of the tunable directional coupler. The optical amplifier receives the pump output of the pump source, receives the soliton optical pulse generated by the mode-locked fiber laser, and amplifies the soliton optical pulse. The optical amplifier is connected to the other output port of the tunable directional coupler.
    • 一种锁模光纤激光器和使用单泵激光器的光纤放大器,光纤激光器使用泵浦源产生孤子光学短脉冲,光纤放大器放大光学短脉冲。 根据本发明的实施例,锁模光纤激光器和光纤放大器使用单个泵激光器,其包括可调定向耦合器,锁模光纤激光器和光放大器。 可调谐定向耦合器连接到泵浦源。 锁模光纤激光器接收泵浦源的泵浦输出并产生孤子光脉冲。 锁模光纤激光器连接到可调谐定向耦合器的输出端口。 光放大器接收泵浦源的泵浦输出,接收由锁模光纤激光器产生的孤子光脉冲,并放大孤子光脉冲。 光放大器连接到可调谐定向耦合器的另一个输出端口。