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    • 1. 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。
    • 2. 发明授权
    • Wavelength tunable mode-locking optical fiber laser
    • 波长可调模式锁定光纤激光器
    • US5812567A
    • 1998-09-22
    • US794907
    • 1997-02-04
    • Min Yong JeonHak Kyu LeeKyong Hon KimEl Hang Lee
    • Min Yong JeonHak Kyu LeeKyong Hon KimEl Hang Lee
    • H01S3/098H01S3/067H01S3/13
    • H01S3/067H01S3/06791H01S3/1068H01S3/1109
    • The wavelength tunable mode-locking optical fiber laser comprises non-linear amplifying loop mirror part having a light pumping lase diode, a gain medium doped optical fiber having the gain medium for oscillating the rambling light wave sequentially, a dispersion shifted optical fiber, and first polarization controller for making the continuous oscillation light wave to be maximized by adjusting the polarization of said propagating light. All elements of the non-linear amplifying loop mirror part are combined to each other in loop type on the above clock direction., and linear mirror part having second polarization controller for adjusting the light wave oscillated by the non-linear amplifying loop mirror part to be mode-locked, Faraday rotation mirror for rotating the direction of polarization with degree, an acousto-optic tunable filter for changing the wavelength of the propagating light wave and for passing only the light wave with the defined linewidth, an optical isolator, and the 90:10 optical fiber directional coupler.
    • 波长可调模式锁定光纤激光器包括具有光泵浦二极管的非线性放大环路镜部分,具有用于顺序振荡漫射光波的增益介质的增益介质掺杂光纤,色散位移光纤和第一 偏振控制器,用于通过调节所述传播光的偏振使连续振荡光波最大化。 非线性放大环路镜部分的所有元件在上述时钟方向上以环路类型彼此组合,并且具有第二偏振控制器的线性反射镜部分用于将由非线性放大环形镜部分振荡的光波调整到 用于旋转偏振方向的法拉第旋转镜,用于改变传播光波的波长并且仅通过具有限定的线宽的光波的声光可调谐滤光器,光隔离器,以及 90:10光纤定向耦合器。
    • 4. 发明授权
    • Multi-wavelength channel transmission-type optical filter
    • 多波长通道传输型滤光片
    • US6055345A
    • 2000-04-25
    • US132432
    • 1998-08-11
    • Joon Tae AhnHak Kyu LeeKyong Hon KimEl Hang Lee
    • Joon Tae AhnHak Kyu LeeKyong Hon KimEl Hang Lee
    • G02F1/1335G02B6/34G02B6/28
    • G02B6/29352
    • The present invention provides a multi-wavelength channel transmission-type optical filter that is capable of more narrowing the bandwidth of transmission wavelength in a transmission type optical filter using Mach-Zehnder interferometer. The multi-wavelength channel transmission-type optical filter including a first optical fiber coupler for dividing a broadband light source into two lights, an optical fiber length and optical fiber length controlling unit for controlling the gap of transmission wavelength in which each receives as inputs the above lights divided by the first optical fiber coupler, a second optical fiber coupler for outputting each of the above lights, which are passed through the optical fiber length controlling unit and the optical fiber length, and an optical isolator for narrowing the width of transmission wavelength by connecting the two outputs of the second optical fiber coupler, thereby improving a wavelength selecting characteristics.
    • 本发明提供一种多波长信道传输型滤光器,其能够使用马赫 - 策德尔(Mach-Zehnder)干涉仪在透射型光学滤波器中使传输波长的带宽变窄。 多波长通道透射型光学滤波器,包括用于将宽带光源分为两个光的第一光纤耦合器,用于控制传输波长的间隙的光纤长度和光纤长度控制单元, 上述光由第一光纤耦合器分开,第二光纤耦合器,用于输出通过光纤长度控制单元和光纤长度的上述每个光;以及光隔离器,用于缩小透射波长的宽度 通过连接第二光纤耦合器的两个输出,从而提高波长选择特性。
    • 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。
    • 7. 发明授权
    • Optical fiber cascaded Raman laser scheme
    • 光纤级联拉曼激光方案
    • US06426965B1
    • 2002-07-30
    • US09498457
    • 2000-02-04
    • Do Il ChangMin Yong JeonHak Kyu LeeKyong Hon Kim
    • Do Il ChangMin Yong JeonHak Kyu LeeKyong Hon Kim
    • H01S330
    • H01S3/302
    • An optical fiber cascaded Raman laser scheme is provided. An optical fiber cascaded Raman laser scheme in accordance with an embodiment of the present invention includes a pump light source, an optical fiber, a wavelength division multiplexing optical fiber combiner, another wavelength division multiplexing optical fiber combiner, a short period optical fiber bragg grating, a long period bragg grating, first means, and second means. The pump light source generates pump light. The optical fiber causes Raman scattering regarding the optical pump light as nonlinear material. The wavelength division multiplexing optical fiber combiner forms intra cavity regarding light of second order stoke frequency shifted wavelength. The light is stoke frequency shifted by Raman scattering of the optical fiber. The another wavelength division multiplexing optical fiber combiner forms intra cavity regarding light of first and third order stoke frequency shifted wavelength. The light is stoke frequency shifted by Raman scattering of the optical fiber. The short period optical fiber bragg grating selects and reflects fourth stoke frequency shifted wavelength of output wavelength in intra cavity. The intra cavity is formed by the wavelength division multiplexing optical fiber combiner. The long period bragg grating causes loss on fifth order stoke frequency shifted wavelength and prevents oscillation. The fifth order is next order of output wavelength of the intra cavity. The first means passes pump light emitted from the pump light source and reflects light of fourth order stoke frequency shifted output wavelength. The first means is connected between the pump light source and the wavelength division multiplexing optical fiber combiner. The second means reflects pump light emitted from the pump light source and passing light of output wavelength.
    • 提供光纤级联拉曼激光器方案。 根据本发明实施例的光纤级联拉曼激光器方案包括泵浦光源,光纤,波分复用光纤组合器,另一波分复用光纤组合器,短周期光纤布拉格光栅, 长周期布拉格光栅,第一装置和第二装置。 泵浦光源产生泵浦光。 光纤引起关于光泵浦光的拉曼散射作为非线性材料。 波分复用光纤组合器形成有关二阶振荡频移波长的光的腔内。 光线被光纤的拉曼散射所驱动。 另一个波分多路复用光纤组合器关于第一和第三阶振荡频移波长的光形成腔内。 光线被光纤的拉曼散射所驱动。 短周期光纤布拉格光栅选择并反映了腔内输出波长的第四发射频移波长。 腔内由波分复用光纤组合器形成。 长周期布拉格光栅引起第五阶振荡频移波长的损失,防止振荡。 第五级是腔内输出波长的下一个顺序。 第一种方法是通过泵浦光源发射的泵浦光,并反射出四阶波长的输出波长的光。 第一装置连接在泵浦光源与波分复用光纤组合器之间。 第二装置反映从泵浦光源发射的泵浦光并传出输出波长的光。
    • 8. 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。
    • 10. 发明授权
    • Mode-locked laser stabilizing apparatus and method thereof
    • 锁模式激光稳定装置及其方法
    • US06560251B1
    • 2003-05-06
    • US09705582
    • 2000-11-02
    • Min Yong JeonHak Kyu LeeDong Sung LimJoon Tae AhnDo Il ChangKyong Hon Kim
    • Min Yong JeonHak Kyu LeeDong Sung LimJoon Tae AhnDo Il ChangKyong Hon Kim
    • H01S313
    • H01S3/06791H01S3/06712H01S3/08059H01S3/108H01S3/1109H01S3/139
    • There is disclosed a mode-locked optical fiber laser stabilizing apparatus for stabilizing the length of the optical fiber laser resonator by feedbacking the optical signals to the laser resonator, in the direction where the signal reflected by the optical fiber loop mirror is detected as an error signal to minimize the signal, and method thereof. According to the present invention, a resonator stabilizing apparatus in an optical fiber laser includes a non-linear optical amplitude loop mirror (NALM) for non-linearly amplifying a laser pumped laser light, a linear loop mirror of a closed loop shape for confining the laser light sufficiently amplified by the non-linear optical amplitude loop mirror; a light isolator for proceeding the light confined by said linear loop mirror only in one direction, an optical coupler for detecting the light proceeding in the direction opposite to the light isolator by the linear loop mirror, the phase of which is varied in the non-linear optical amplitude loop mirror, and a piezo-electric transducer (PZT) for performing a signal processing for minimizing the amount of light proceeding in an opposite direction when the light detector detects the light proceeding in the opposite direction and feedbacking again the light to stabilize the light, the light detector is coupled by the linear loop mirror and the optical coupler.
    • 公开了一种锁模光纤激光稳定装置,用于通过将光信号反馈到激光谐振器,使光纤环路反射的信号被检测为误差的方向来稳定光纤激光谐振器的长度 信号以使信号最小化,及其方法。 根据本发明,光纤激光器中的谐振器稳定装置包括用于非线性放大激光泵浦激光的非线性光学振幅反射镜(NALM),闭环形状的线性环形反射镜,用于限制 激光由非线性光学振幅回波镜充分放大; 光隔离器,用于仅在一个方向上进行由所述线性环形反射镜限制的光;光耦合器,用于检测通过线性环形反射镜在与光隔离器相反的方向上行进的光, 线性光学振幅回路镜和压电换能器(PZT),用于当光检测器检测到沿相反方向进行的光并且再次反馈光以稳定时进行信号处理以最小化在相反方向上进行的光量 光,光检测器通过线性环路镜和光耦合器耦合。