公开(公告)号：US06990283B2

公开(公告)日：2006-01-24

申请号：US10777087

申请日：2004-02-13

申请人： Jong Moo Lee ,  Sun Tak Park ,  Joon Tae Ahn ,  Jung Jin Ju ,  Myung Hyun Lee ,  Kyong Hon Kim

发明人： Jong Moo Lee ,  Sun Tak Park ,  Joon Tae Ahn ,  Jung Jin Ju ,  Myung Hyun Lee ,  Kyong Hon Kim

IPC分类号： G02B6/10

CPC分类号： G02B6/12023 ,  G02B6/1203 ,  G02B6/126 ,  G02B6/138

摘要： Provided is a polymeric optical device comprising a substrate, a lower cladding layer formed on the substrate, at least one core layer pattern formed on a predetermined region of the lower cladding layer and an upper cladding layer having at least two sub-upper cladding layers and formed on the lower cladding layer in which the core layer pattern is formed, and a method of fabricating the same, whereby birefringence of a polymeric optical device could be improved and polarization dependence could be reduced by adjusting the thickness of the sub-upper cladding layer and the number of stacks thereof.

摘要翻译： 本发明提供一种聚合物光学元件，其特征在于，具备：基板，形成在所述基板上的下部包层，形成在所述下部包层的规定区域上的至少一个芯层图案，以及具有至少2个以上的上侧包层的上部包层， 形成在其中形成芯层图案的下包覆层上，以及其制造方法，由此可以提高聚合物光学器件的双折射率，并且可以通过调节子上覆层的厚度来降低偏振相关性 和它们的堆叠数。

公开(公告)号：US06625361B2

公开(公告)日：2003-09-23

申请号：US10085371

申请日：2002-02-27

申请人： Sahng-gi Park ,  Jong-bae Kim ,  Doo-hee Cho ,  Yong-gyu Choi ,  Kyong-hon Kim ,  Bun Lee

发明人： Sahng-gi Park ,  Jong-bae Kim ,  Doo-hee Cho ,  Yong-gyu Choi ,  Kyong-hon Kim ,  Bun Lee

IPC分类号： G02B600

CPC分类号： G02F1/3558 ,  C03C25/1063 ,  C03C25/22 ,  C03C25/52 ,  G02B6/02 ,  G02B6/2826 ,  G02F1/0115

摘要： A method for forming two conductive films isolated electrically from each other on the surface of a fiber is provided. According to the method, a fiber is attached into the grooves on a silicon substrate using photoresist as glue. A photoresist pattern for a conductive film on the surface of the fiber is formed by a photolithography process. After wet-etching some amount of the fiber on the patterned area, which is needed for lifting off a metal film deposited on the unnecessary area, a metal film is deposited over whole area of the wafer. Removing photo-resist by a heated stripper solution leaves a metal film only on the patterned area of the fiber and detaches the fibers from the grooves of the wafer The second metal film on the other side of the fiber can be formed by the same procedures as the first metal film except that the deposited surface of the fiber must be attached to the grooves upside down. The poled fiber using two conductive films can be applied to manufacture elements used in opto-electronic and fiber communication devices such as a modulator, a tunable filter and a switch, an electric field sensor, and a nonlinear fiber optics device such as a frequency converter, a dispersion compensator.

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：US5898716A

公开(公告)日：1999-04-27

申请号：US934810

申请日：1997-09-22

申请人： Joon Tae Ahn ,  Hack Kyu Lee ,  Kyong Hon Kim

发明人： Joon Tae Ahn ,  Hack Kyu Lee ,  Kyong Hon Kim

IPC分类号： G02B6/00 ,  H01S3/067 ,  H01S3/098 ,  H01S3/108 ,  H01S3/16 ,  H01S3/30

CPC分类号： H01S3/06791 ,  H01S3/06712 ,  H01S3/082 ,  H01S3/105 ,  H01S3/1112 ,  H01S3/1608

摘要： A laser structure for obtaining an optical pulse of a very short duration by using the benefit of a passive mode locking and for improving a repetition rate of an output optical pulse was described. In general, a passively mode-locked laser generates a short optical pulse than a active mode locked laser does, while it has difficulties in increasing the repetition rate of the output optical pulse because the repetition rate of the passively mode-locked laser is determined by the length of the resonator. In accordance with the present invention, a delayed optical path is added to the linear loop of a conventional figure-8 optical fiber laser. The propagation time difference .DELTA.T between the delayed optical path and undelayed short optical path is adjusted to a divisor of the round trip time, T, of the original resonator by properly adjusting the length of the delayed optical path. Thus, the repetition rate of the output optical pulse of the mode locked laser can be increased from 1/T Hz to 1/.DELTA.T Hz. The optical fiber laser which can fully exploit the advantages of the passive mode locking and improve the repetition rate of the output optical pulse in accordance with the present invention can be applied to a wide range of applications including an optical communication and an ultra high speed analysis of optical phenomena.

摘要翻译： 描述了通过利用被动模式锁定和改善输出光脉冲的重复率来获得非常短持续时间的光脉冲的激光结构。 通常，被动锁模激光器产生比有源模式锁定激光器短的光脉冲，而由于被动锁模激光器的重复频率由被动锁模激光器的重复频率确定，所以难以增加输出光脉冲的重复率 谐振器的长度。 根据本发明，将延迟的光路添加到常规的图8的光纤激光器的线性环路中。 延迟光路和未延迟的短光路之间的传播时间差DELTA T通过适当地调节延迟光路的长度来调整到原始谐振器的往返时间T的除数。 因此，锁模激光器的输出光脉冲的重复率可以从1 / T Hz增加到1 / DELTA T Hz。 可以充分利用被动模式锁定的优点并提高根据本发明的输出光脉冲的重复率的光纤激光器可以应用于广泛的应用，包括光通信和超高速分析 的光学现象。

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：US20100290055A1

公开(公告)日：2010-11-18

申请号：US12779236

申请日：2010-05-13

申请人： Kyong-Hon Kim ,  Seoung-Hun Lee ,  Seung-Hwan Kim ,  El-Hang Lee

发明人： Kyong-Hon Kim ,  Seoung-Hun Lee ,  Seung-Hwan Kim ,  El-Hang Lee

IPC分类号： G01J3/45

CPC分类号： G01N21/636 ,  G01N21/1717 ,  G01N21/21 ,  G01N21/23 ,  G01N21/45 ,  G01N2021/1721

摘要： Measuring of an electro-optic coefficient and a thermo-optic coefficient of an optical device and an optical material, and more specifically, to measurement systems and methods of evaluating the electro-optic and thermo-optic coefficients by using interference fringe measurement techniques, wherein those optical characteristics can be precisely measured over a wide wavelength intended without using a complicated measuring equipment. The system for measuring an electro-optic coefficient includes: a light source for outputting an optical beam of multi-wavelengths, an optical interferometer including an optical beam splitter for dividing the optical beam received from the light source into two separate beams, a reference arm for receiving any one of the divided optical beams, a sample arm for receiving the other of the divided optical beams and applying a voltage to an optical sample to be measured by being connected to the optical sample, and an optical beam combiner for combining and mutually interfering optical beams that are output through the reference arm and the sample arm, and an optical spectrum analyzing device for receiving the mutually interfered optical beam from the optical interferometer and analyzing a spectrum of the mutually interfered optical beam.

摘要翻译： 测量光学器件和光学材料的电光系数和热光学系数，更具体地说，涉及通过使用干涉条纹测量技术来评估电光和热光学系数的测量系统和方法，其中 可以在不使用复杂的测量设备的情况下在宽的波长上精确地测量这些光学特性。 用于测量电光系数的系统包括：用于输出多波长光束的光源;光干涉仪，包括用于将从光源接收的光束分成两束单独光束的光束分离器;参考臂 用于接收分割光束中的任何一个，用于接收另外的划分的光束并通过连接到光学样本向待测量的光学样本施加电压的采样臂以及用于组合和相互的光束组合器 通过参考臂和样本臂输出的干涉光束，以及用于从光学干涉仪接收相互干涉的光束并分析相互干涉的光束的光谱的光谱分析装置。

公开(公告)号：US06950579B2

公开(公告)日：2005-09-27

申请号：US10331595

申请日：2002-12-30

申请人： Joon Tae Ahn ,  Sun Tak Park ,  Jong Moo Lee ,  Myung Hyun Lee ,  Kyong Hon Kim

发明人： Joon Tae Ahn ,  Sun Tak Park ,  Jong Moo Lee ,  Myung Hyun Lee ,  Kyong Hon Kim

IPC分类号： G02B6/12 ,  G02F1/035 ,  G02F1/065 ,  G02F1/225

CPC分类号： G02F1/065 ,  G02F1/225 ,  G02F2201/122 ,  G02F2202/022 ,  G02F2203/06

摘要： The present invention relates to the polarization-independent optical polymeric intensity modulator independent of input signal using polymers with electro-optical property. To use the electro-optical property for electro-optical polymer, polymers must be poled by applying high voltage to the waveguide. The size of phase modulation caused by such an poling varies from the biggest value at polarization parallel to the poling to the smallest value at polarization perpendicular to the poling. Therefore, the performance of the electro-optical polymeric intensity modulator depends on the polarization state of input light. The present invention provides the polarization-independent optical polymeric intensity modulator capable of modulating the optical intensity without regard to the polarization of the input signal by making the polarizing directions of two optical paths of M-Z interferometer perpendicular each other.

摘要翻译： 本发明涉及不依赖于具有电光学性质的聚合物的输入信号的偏振非依赖光学聚合物强度调制器。 为了将电光学性质用于电光聚合物，聚合物必须通过向波导施加高电压来极化。 由这种极化引起的相位调制的大小从垂直于极化的偏振极化时的平行极化极化的最大值变化到最小值。 因此，电光聚合强度调制器的性能取决于输入光的偏振状态。 本发明提供了通过使M-Z干涉仪的两个光路的偏振方向彼此垂直而能够调节光强度而不考虑输入信号的偏振的偏振无关的光聚合强度调制器。

公开(公告)号：US06845185B2

公开(公告)日：2005-01-18

申请号：US10123337

申请日：2002-04-15

申请人： Kyong Hon Kim ,  Joon Tae Ahn ,  Yong Gyu Choi ,  Doo-Hee Cho

发明人： Kyong Hon Kim ,  Joon Tae Ahn ,  Yong Gyu Choi ,  Doo-Hee Cho

IPC分类号： G02B6/293 ,  G02B6/34 ,  G02B6/35 ,  H04J14/02 ,  H04Q11/00 ,  G02B6/12

CPC分类号： G02B6/12004 ,  G02B6/12007 ,  G02B6/12021 ,  G02B6/356 ,  H04J14/02 ,  H04J14/0221 ,  H04Q11/0005 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/0024

摘要： A high-speed wavelength channel selector has properties of relatively easy manufacturing and easy extension to multi-channel integration, and a high-speed space and wavelength multiplexed channel selector uses the high-speed wavelength channel selector. The high-speed wavelength channel selector is integrated with electro-optic waveguide switches of non-crystalline materials, such as electro-optic polymers or glasses, in the middle of a pair of wavelength multiplexer and demultiplexer and the high-speed space and wavelength multiplexed channel selector has the photonic integrated circuit-type composition of a space multiplexed channel selector containing M electro-optic waveguide switches and an M×1 channel combiner, the high-speed wavelength channel selector, optical amplifier and a high-speed wavelength converter.

摘要翻译： 高速波长通道选择器具有制造相对容易，易于扩展到多通道集成的特点，高速空间和波长复用通道选择器使用高速波长通道选择器。 高速波长通道选择器与一对波长多路复用器和解复用器中间的非晶体材料如电光聚合物或眼镜的电光波导开关集成在一起，并且高速空间和波长多路复用 通道选择器具有包含M个电光波导开关和Mx1通道组合器的空间复用通道选择器的光子集成电路型组合，高速波长通道选择器，光放大器和高速波长转换器。

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。