公开(公告)号：US06556596B1

公开(公告)日：2003-04-29

申请号：US09435301

申请日：1999-11-05

申请人： Ho Young Kim ,  Do Il Chang ,  Hak Kyu Lee ,  Kyong Hon Kim

发明人： Ho Young Kim ,  Do Il Chang ,  Hak Kyu Lee ,  Kyong Hon Kim

IPC分类号： H01S330

CPC分类号： H01S3/067 ,  H01S3/094096 ,  H01S3/1305 ,  H01S3/1312

摘要： An apparatus for generating an optical fiber laser capable of tuning a wavelength thereof. The apparatus comprises a pump laser to pump the light with changed polarization state, a light amplify fiber to produce a seed light using the pumped light from the pump laser at a certain operation wavelength and thereafter, when said seed light has stable frequency, to put out the light in that wavelength, a dispersion shift fiber to give a non-linear polarization effect to the output light from the light amplify fiber, a linear polarizer to tune the wavelength of the light from the dispersion shift fiber within a wavelength varying range, a light direction controller to give a certain oscillation direction to the tuned light, an optical element converging a light beam, with a cholesteric liquid crystal cell inserted, which transmits only a circularly polarized light having a consistent rotation period with the rotational direction of the liquid crystal surface and reflects all the rest of the light, and an output port to confirm a laser output light beam by putting out a certain portion of the light from said light converging element.

摘要翻译： 一种用于产生能够调谐其波长的光纤激光器的装置。 该装置包括泵浦激光器以泵浦具有改变的偏振态的光，光放大光纤以使用来自泵浦激光器的泵浦光以一定的工作波长产生种子光，此后，当所述种子光具有稳定的频率时，放置 在该波长处的光，使色散位移光纤对来自光放大光纤的输出光产生非线性偏振效应，线性偏振器，以调节波长变化范围内来自色散位移光纤的光的波长， 向调谐光赋予一定的振荡方向的光方向控制器，使聚光的光学元件与被插入的胆甾醇型液晶单元一体地旋转，该液晶单元只透过与液体的旋转方向一致的旋转周期的圆偏振光 晶体表面反射所有其余的光，以及一个输出端口，通过放出一定的波数来确认激光输出光束 来自所述光会聚元件的光。

公开(公告)号：US06538804B1

公开(公告)日：2003-03-25

申请号：US09433455

申请日：1999-11-04

申请人： Kyong Hon Kim ,  Yong Gyu Choi ,  Hak Kyu Lee ,  Min Yong Jeon ,  Joon Tae Ahn ,  Dong Sung Lim ,  Ho Young Kim ,  Do Il Chang

发明人： Kyong Hon Kim ,  Yong Gyu Choi ,  Hak Kyu Lee ,  Min Yong Jeon ,  Joon Tae Ahn ,  Dong Sung Lim ,  Ho Young Kim ,  Do Il Chang

IPC分类号： H01S300

CPC分类号： G02F1/3132 ,  G02F1/225 ,  H01S5/4068 ,  H01S5/50

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5774217A

公开(公告)日：1998-06-30

申请号：US734265

申请日：1996-10-21

申请人： Hak-Kyu Lee ,  Kyong-Hon Kim ,  Seo-Yeon Park ,  El-Hang Lee

发明人： Hak-Kyu Lee ,  Kyong-Hon Kim ,  Seo-Yeon Park ,  El-Hang Lee

IPC分类号： G02B6/00 ,  G01N21/45 ,  G01B9/02

CPC分类号： G01N21/45

摘要： A measurement of nonlinear refractive index coefficient of an optical fiber with a Sagnac interferometer, comprises the steps of employing the optical fiber in a Sagnac interferometer, splitting a signal beam into two signals, launching the two split signals into the interferometer in opposite directions, combining and detecting the signals counter-propagated in the interferometer, and detecting the refractive index coefficient of the optical fiber in accordance with the difference between the two signal powers determined by a control beam. The quasi-static phase shift of the signal beam counter-propagating the same paths of the interferometer is induced by rotating the optical fiber loop of the interferometer. The present invention gives rise to little error because it does not require precise information about the pulse width of a used beam or a high-power light.

摘要翻译： 使用Sagnac干涉仪测量光纤的非线性折射率系数包括以下步骤：在Sagnac干涉仪中采用光纤，将信号光束分成两个信号，将两个分离信号以相反方向发射到干涉仪中，组合 并检测在干涉仪中反向传播的信号，并且根据由控制光束确定的两个信号功率之差检测光纤的折射率系数。 通过旋转干涉仪的光纤环来感应反向传播干涉仪相同路径的信号光束的准静态相移。 由于不需要关于使用光束或大功率光的脉冲宽度的精确信息，本发明产生很小的误差。

公开(公告)号：US06426965B1

公开(公告)日：2002-07-30

申请号：US09498457

申请日：2000-02-04

申请人： Do Il Chang ,  Min Yong Jeon ,  Hak Kyu Lee ,  Kyong Hon Kim

发明人： Do Il Chang ,  Min Yong Jeon ,  Hak Kyu Lee ,  Kyong Hon Kim

IPC分类号： H01S330

CPC分类号： H01S3/302

摘要： 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.

摘要翻译： 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。

公开(公告)号：US6160627A

公开(公告)日：2000-12-12

申请号：US315998

申请日：1999-05-21

申请人： Joon Tae Ahn ,  Hak Kyu Lee ,  Min Yong Jeon ,  Dong Sung Lim ,  Kyong Hon Kim ,  El Hang Lee

发明人： Joon Tae Ahn ,  Hak Kyu Lee ,  Min Yong Jeon ,  Dong Sung Lim ,  Kyong Hon Kim ,  El Hang Lee

IPC分类号： G02B6/34 ,  G01B9/02

CPC分类号： G02B6/29353

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5812567A

公开(公告)日：1998-09-22

申请号：US794907

申请日：1997-02-04

申请人： Min Yong Jeon ,  Hak Kyu Lee ,  Kyong Hon Kim ,  El Hang Lee

发明人： Min Yong Jeon ,  Hak Kyu Lee ,  Kyong Hon Kim ,  El Hang Lee

IPC分类号： H01S3/098 ,  H01S3/067 ,  H01S3/13

CPC分类号： H01S3/067 ,  H01S3/06791 ,  H01S3/1068 ,  H01S3/1109

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5524118A

公开(公告)日：1996-06-04

申请号：US358532

申请日：1994-12-19

申请人： Kyong-Hon Kim ,  Hak-Kyu Lee ,  Seo-Yeon Park ,  El-Hang Lee

发明人： Kyong-Hon Kim ,  Hak-Kyu Lee ,  Seo-Yeon Park ,  El-Hang Lee

IPC分类号： H01S3/07 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/083 ,  H01S3/10 ,  H01S3/102 ,  H01S3/106 ,  H01S3/23 ,  H04B10/00 ,  H04B10/25 ,  H01S3/30

CPC分类号： H01S3/067 ,  H01S3/08086 ,  H01S3/083 ,  H01S3/2383

摘要： A wavelength-varying multi-wavelength optical filter laser using a single pump light source is disclosed. The laser comprises a wavelength-division multiplexing coupler for applying an output from a single pump light source, a first multi-branch optical fiber coupler for branching the light from the single pump light source into a plurality of optical paths, an erbium-doped fiber located at each of optical paths, wavelength-varying optical filters located at rear of each erbium-doped fiber in each optical paths, said wavelength-varying optical filters for generating laser outputs of different wavelengths in each optical paths, optical isolators located between the erbium-doped fiber and the wavelength-varying optical filter in each optical paths, said optical isolators for reducing interference between laser outputs to be stable, optic attenuators located at rear of the wavelength-varying optical filter in each optical paths, said attenuators for regulating a mode beating between laser outputs of different wavelengths, thereby causing the multi-wavelength laser oscillation to be possible, a second multi-branch optical fiber coupler for coupling branched-optical paths, and a variable optical fiber coupler located at rear of the second multi-branch optical fiber, said variable optical fiber coupler for regulates a coupling ratio of the second variable optical fiber coupler, thereby making the output thereof to be maximum.

摘要翻译： 公开了使用单个泵浦光源的波长变化的多波长光学滤波器激光器。 激光器包括用于施加来自单个泵浦光源的输出的波分复用耦合器，用于将来自单个泵浦光源的光分支到多个光路中的第一多分支光纤耦合器，掺铒光纤 位于每个光路中的每个光路中位于每个掺铒光纤后面的波长变化滤光器，用于在每个光路中产生不同波长的激光输出的所述波长变化滤光器，位于铒之间的光隔离器 每个光路中的掺杂光纤和波长变化滤光器，用于减少激光输出之间的干扰的光隔离器是稳定的，位于每个光路中的波长变化滤光器后面的光衰减器，所述衰减器用于调节 在不同波长的激光输出之间进行模式跳动，从而使多波长激光振荡成为可能， 用于耦合分支光路的第二多分支光纤耦合器和位于第二多分支光纤后面的可变光纤耦合器，所述可变光纤耦合器用于调节第二可变光纤耦合器的耦合比 ，从而使其输出最大。

公开(公告)号：US08428460B2

公开(公告)日：2013-04-23

申请号：US10593848

申请日：2005-04-08

申请人： Chang-Hee Lee ,  Hak Kyu Lee ,  Dong-Sung Lim

发明人： Chang-Hee Lee ,  Hak Kyu Lee ,  Dong-Sung Lim

IPC分类号： H04J14/02 ,  H04J14/00 ,  G02B6/293 ,  G02B6/28 ,  H04Q11/04

CPC分类号： H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0282 ,  H04Q11/0067 ,  H04Q2011/0086 ,  H04Q2011/009

摘要： Various methods and apparatuses are described for a wavelength division multiplexing passive optical network (WDM-PON) that performs bi-directional communication. The WDM-PON may include two or more remote distribution nodes in between a central office and the most distant optical network unit. Each remote distribution node is located in a physically separate location. A first remote distribution node has two or more optical network units connected to the first remote distribution node. Each remote node separates one or more wavelength channels from a composite optical signal distributed through that remote distribution node.

摘要翻译： 对于执行双向通信的波分复用无源光网络（WDM-PON）描述了各种方法和装置。 WDM-PON可以包括在中心局和最远的光网络单元之间的两个或更多个远程分配节点。 每个远程分发节点位于物理上分开的位置。 第一远程分发节点具有连接到第一远程分发节点的两个或多个光网络单元。 每个远程节点将一个或多个波长信道与通过该远程分布节点分发的复合光信号分离。

公开(公告)号：US06266458B1

公开(公告)日：2001-07-24

申请号：US09416904

申请日：1999-10-13

申请人： Joon Tae Ahn ,  Hak Kyu Lee ,  Min-Yong Jeon ,  Dong Sung Lim ,  Kyong-Hon Kim

发明人： Joon Tae Ahn ,  Hak Kyu Lee ,  Min-Yong Jeon ,  Dong Sung Lim ,  Kyong-Hon Kim

IPC分类号： G02B600

CPC分类号： G02B6/2726 ,  G02B6/2773 ,  G02B6/29302 ,  G02B6/29352 ,  G02B6/29395

摘要： 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.

摘要翻译： 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。

公开(公告)号：US06256432B1

公开(公告)日：2001-07-03

申请号：US09382456

申请日：1999-08-25

申请人： Min-Yong Jeon ,  Hak Kyu Lee ,  Dong Sung Lim ,  Joon-Tae Ahn ,  Kyoung-Hon Kim

发明人： Min-Yong Jeon ,  Hak Kyu Lee ,  Dong Sung Lim ,  Joon-Tae Ahn ,  Kyoung-Hon Kim

IPC分类号： G02B628

CPC分类号： H04B10/299 ,  H01S5/0657

摘要： The present invention provides a demultiplexer for generating a constant four-wave-mixing beam without regard to an input polarization state using a dispersion-shifted fiber that is a nonlinear material with high refractive index. A number of parts in conventional demultiplexer implementations, which are sensitive to input polarization state has been replaced with optical fibers of high polarization mode dispersion.

摘要翻译： 本发明提供一种解复用器，用于使用作为具有高折射率的非线性材料的色散位移光纤而不考虑输入偏振状态来产生恒定的四波混频。 对输入偏振状态敏感的常规解复用器实现中的许多部分已被高偏振模色散的光纤代替。