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    • 3. 发明授权
    • Hybrid type passively and actively mode-locked laser scheme
    • 混合型被动主动锁模激光方案
    • US5828680A
    • 1998-10-27
    • US712597
    • 1996-09-13
    • Kyong-Hon KimSeo-Yeon ParkHak-Kyu LeeMin-Yong Jeon
    • Kyong-Hon KimSeo-Yeon ParkHak-Kyu LeeMin-Yong Jeon
    • H01S3/10H01S3/067H01S3/083H01S3/098H01S3/30
    • H01S3/06791H01S3/082H01S3/1109H01S3/1112Y10S372/70
    • A hybrid type passively and actively mode-locked laser scheme is disclosed, in which not only the capability of producing ultra-short optical pulses by the conventional passively mode-locked optical fiber laser scheme is utilized, but also the repetition rate variation capability and the optical pulse synchronization capability of the conventional actively mode-locked laser scheme are utilized. Consequently, all the advantages of the two conventional laser schemes are obtained in the present invention. Specifically, two loops are coupled together, and one of the two loops consists of a non-linear amplifying loop of the existing passively mode-locked scheme, while the other loop includes an optical modulator and an optical gain medium for the loop to perform the function of an actively mode-locked scheme. Further the other loop includes a time delay line so as to adjust the laser oscillation repetition rate. The ultra-short optical pulses of the present invention will be applied to high speed time division multiplexed optical communication system, high speed optical signal processors, and ultrafast optical phenomenon studies.
    • 公开了一种混合型被动和主动锁模激光器方案,其中不仅利用常规被动锁模光纤激光器方案产生超短光脉冲的能力,而且重复频率变化能力和 利用传统的主动锁模激光方案的光脉冲同步能力。 因此,在本发明中获得了两种常规激光方案的所有优点。 具体地,两个环路耦合在一起,并且两个环路中的一个环路由现有被动锁模方案的非线性放大环路组成,而另一个环路包括用于环路的光学调制器和光学增益介质, 主动模式锁定方案的功能。 此外,另一个环路包括时间延迟线,以便调整激光振荡重复率。 本发明的超短光脉冲将被应用于高速时分复用光通信系统,高速光信号处理器和超快光学现象研究。
    • 5. 发明授权
    • Tunable optical filtering system using fiber-optic polarimetric interferometer
    • 可调谐光学滤波系统采用光纤偏振干涉仪
    • US06266458B1
    • 2001-07-24
    • US09416904
    • 1999-10-13
    • Joon Tae AhnHak Kyu LeeMin-Yong JeonDong Sung LimKyong-Hon Kim
    • Joon Tae AhnHak Kyu LeeMin-Yong JeonDong Sung LimKyong-Hon Kim
    • G02B600
    • G02B6/2726G02B6/2773G02B6/29302G02B6/29352G02B6/29395
    • The present invention provides a tunable optical filtering system using fiber-optic polarimetric interferometer. The tunable optical filtering system using fiber-optic polarimetric interferometer in accordance with the present invention comprises a stabilization light source, a first polarization beam splitter, a first optical fiber node, a number of polarization maintaining optical fibers, a phase modulator, a stabilization electronics, a second optical fiber node, a second polarization beam splitter, and two wavelength division optical multiplexers. The stabilization light source supplies stabilization light. The first polarization beam splitter polarizes the stabilization light and the input light to be filtered and generates polarized light. The first optical fiber node connects the output of the first polarization beam splitter with polarization maintaining fibers with the angle of 45 degree between their birefringent axes and splits the polarized light. The number of polarization maintaining optical fibers carries the split light by the first optical fiber node. The phase modulator maintains phase difference between two birefringent axes of the polarization maintaining fibers. The stabilization electronics supply feedback signal to the phase modulator. The second optical fiber node connects the polarization maintaining fibers with the input of second polarization beam splitter with the angle of 45 degree between their birefringent axes, receives split light by said first optical fiber node, and generates interference signals. The second polarization beam splitter divides the interference signals into output signals by polarization axes. The wavelength division optical multiplexers divide the output signals into signals for the stabilization electronics and filtered signals by wavelengths.
    • 本发明提供一种使用光纤偏振干涉仪的可调谐光学滤波系统。 根据本发明的使用光纤偏振干涉仪的可调谐光学滤波系统包括稳定光源,第一偏振分束器,第一光纤节点,多个保偏光纤,相位调制器,稳定电子器件 ,第二光纤节点,第二偏振分束器和两个波分复用器。 稳定光源提供稳定光源。 第一偏振分束器使稳定光和要滤波的输入光偏振,产生偏振光。 第一光纤节点将第一偏振分束器的输出端与偏振维持光纤以双折射轴之间的角度45度连接并分离偏振光。 偏振维持光纤的数量由第一光纤节点承载分离光。 相位调制器保持偏振保持光纤的两个双折射轴之间的相位差。 稳定电路向相位调制器提供反馈信号。 第二光纤节点将偏振保持光纤与第二偏振光束分离器的输入端在双折射轴之间以45度的角度连接,由所述第一光纤节点接收分束光,并产生干涉信号。 第二偏振分束器通过偏振轴将干扰信号分成输出信号。 波分复用器将输出信号划分为稳定电路的信号和波长的滤波信号。