公开(公告)号：US06853480B2

公开(公告)日：2005-02-08

申请号：US10329501

申请日：2002-12-27

申请人： Yong Gyu Choi ,  Bong Je Park ,  Hong Seok Seo ,  Doo Hee Cho ,  Kyong Hon Kim ,  Tae Hoon Lee ,  Jong Heo

发明人： Yong Gyu Choi ,  Bong Je Park ,  Hong Seok Seo ,  Doo Hee Cho ,  Kyong Hon Kim ,  Tae Hoon Lee ,  Jong Heo

IPC分类号： G02B6/00 ,  H01S3/094 ,  H01S3/16 ,  H01S3/00

CPC分类号： H01S3/094003 ,  H01S3/161

摘要： The present invention relates to a main wavelength band of a pump light source capable of improving the pump efficiency while using 1.6 μm fluorescence emitted from Ho3+:5I5→5I7 transition as an optical amplifier, and an assistant pump wavelength band capable of accomplishing population inversion between 5I5 level and 5I7 level to improve the signal gain characteristics of such amplifier. The optical amplifier using optical materials to which holmium or holmium and terbium, holmium and europium, holmium and neodymium or holmium and dysprosium, etc. are doped can be pumped using a light source that emits light of 11,200˜11,500 cm−1 or a light source that emits light of 6,000˜6,500 cm−1.

摘要翻译： 本发明涉及一种泵浦光源的主波长带，能够提高泵效率，同时使用从Ho 3+发射的1.6μm荧光作为光放大器，以及 能够实现<5> I5电平和<5> I7电平之间的总体反转的辅助泵波长带，以改善这种放大器的信号增益特性。 使用掺杂有钬或钬和铽，钬和铕，钬和钕或钬和镝等的光学材料的光放大器可以使用发射11,200〜11500cm -1的光的光源来泵浦，或 发出6,000〜6,500厘米-1的光的光源。

公开(公告)号：US06654520B2

公开(公告)日：2003-11-25

申请号：US09961259

申请日：2001-09-25

申请人： Yong-Gyu Choi ,  Jong-Bae Kim ,  Doo-Hee Cho ,  Kyong-Hon Kim

发明人： Yong-Gyu Choi ,  Jong-Bae Kim ,  Doo-Hee Cho ,  Kyong-Hon Kim

IPC分类号： G02B634

CPC分类号： G02F1/383 ,  G02F1/3558

摘要： The present invention relates to the fabrication of an optical device; and, more particularly to an electrode for fabricating periodically poled optical fibers and a fabrication method of periodically poled optical fibers using the electrode. To fabricate periodically poled optical fibers for improving the effect of three wave mixing in accordance with the second-order nonlinear optical phenomenon, the periodically poled optical fibers of the present invention is formed by using one or more electrodes with holes or grooves for a period satisfying the quasi phase matching condition between light waves in use. Also, using the electrodes described above, one or more holes or one or more grooves are formed on the surface of the optical fiber around the core in its length direction, and thereby make an optical fiber poled periodically.

公开(公告)号：US06560251B1

公开(公告)日：2003-05-06

申请号：US09705582

申请日：2000-11-02

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

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

IPC分类号： H01S313

CPC分类号： H01S3/06791 ,  H01S3/06712 ,  H01S3/08059 ,  H01S3/108 ,  H01S3/1109 ,  H01S3/139

摘要： 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.

摘要翻译： 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。

公开(公告)号：US06560247B2

公开(公告)日：2003-05-06

申请号：US09993027

申请日：2001-11-05

申请人： Do-Il Chang ,  Min-Yong Jeon ,  Kyong-Hon Kim

发明人： Do-Il Chang ,  Min-Yong Jeon ,  Kyong-Hon Kim

IPC分类号： H01S330

CPC分类号： H01S3/06754 ,  H01S3/0809 ,  H01S3/302

摘要： A dual wavelength optical fiber laser includes a first and a second optical fibers which generating stimulated scattering by a pump light source; two short period optical fiber gratings that is resonating each of a first and a second wavelength light which are generated by the optical fibers and regulating reflecting characteristics according to the first and the second wavelengths; a WDM optical fiber coupler which inputs a pump wavelength to the optical fibers and outputs a laser operation wavelength; and an interference removing unit which is connected between the optical fibers and removes an interference in the first and the second wavelength of resonating.

公开(公告)号：US06459846B1

公开(公告)日：2002-10-01

申请号：US09498321

申请日：2000-02-04

申请人： Yong Gyu Choi ,  Dong Sung Lim ,  Kyong Hon Kim ,  Hak Kyu Lee

发明人： Yong Gyu Choi ,  Dong Sung Lim ,  Kyong Hon Kim ,  Hak Kyu Lee

IPC分类号： G02B600

CPC分类号： H01S3/06708 ,  H01S3/06716

摘要： The present invention relates to a complex rare-earths doped optical waveguide. In particular, the complex rare-earths doped optical waveguide in accordance with an embodiment of the present invention is for modifying emission spectrum of erbium that is able to obtain gain from shorter wavelength than 1530 nm. A complex rare-earths doped optical wavelength is provided. The complex rare-earths doped optical waveguide in accordence with an embodiment of the present invention includes clad and core. The core is doped with erbium (Er) ion. The internal or surface of the core is doped with at least one complex rare-earth ions. The internal and the surface of the core is distanced by certain length from center of the core.

摘要翻译： 本发明涉及一种复合稀土掺杂光波导。 特别地，根据本发明实施例的复合稀土掺杂光波导用于修改能够从比1530nm的较短波长获得增益的铒的发射光谱。 提供了复杂的稀土掺杂光波长。 根据本发明的实施例的复合稀土掺杂光波导包括包层和芯。 核心掺杂有铒（Er）离子。 芯的内部或表面掺杂有至少一种复合稀土离子。 芯的内部和表面与芯的中心距离一定长度。

公开(公告)号：US06266145B1

公开(公告)日：2001-07-24

申请号：US09441532

申请日：1999-11-16

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

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

IPC分类号： G01B902

CPC分类号： G01J11/00

摘要： An apparatus for measurement of an optical pulse shape intended to measure the temporal waveform of an ultrashort single optical pulse is disclosed. The present invention comprises a linearly chirped supercontinuum light source that is synchronized with an optical pulse to be measured; a nonlinear optical interferometer to transform the temporal waveform of an incident optical pulse into a spectrum using an incident light from said supercontinuum light source; and an optical spectrum analyzer to measure the wavelength of the light passing through the nonlinear interferometer so that it can measure the temporal waveform of a single optical pulse. The present invention employs the method that transforms the temporal waveform of an incident optical pulse into a spectrum and measures the wavelength using a linearly chirped supercontinuum light source, a nonlinear optical interferometer, and an optical spectrum analyzer. The present invention provides an apparatus for measurement of an optical pulse shape that is able to measure the waveform not with the repeated measurements but with a single shot measurement.

摘要翻译： 公开了一种用于测量旨在测量超短单个光脉冲的时间波形的光脉冲形状的装置。 本发明包括与要测量的光脉冲同步的线性啁啾超连续谱光源; 使用来自所述超连续光源的入射光将入射光脉冲的时间波形变换为光谱的非线性光学干涉仪; 以及光谱分析仪来测量穿过非线性干涉仪的光的波长，以便它可以测量单个光脉冲的时间波形。 本发明采用将入射光脉冲的时间波形变换为光谱并使用线性啁啾超连续光源，非线性光学干涉仪和光谱分析仪测量波长的方法。 本发明提供了一种用于测量光脉冲形状的装置，该装置能够测量不是重复测量而不是单次测量的波形。

公开(公告)号：US6097861A

公开(公告)日：2000-08-01

申请号：US112373

申请日：1998-07-09

申请人： Kyong Hon Kim ,  Hak Kyu Lee ,  Joon Tae Ahn ,  El Hang Lee

发明人： Kyong Hon Kim ,  Hak Kyu Lee ,  Joon Tae Ahn ,  El Hang Lee

IPC分类号： G02B5/20 ,  G02B6/34 ,  G02B6/26

CPC分类号： G02B6/2932 ,  G02B6/29322 ,  G02B6/29389

摘要： An improved multi-wavelength channel transmission filter, by which it is possible to selectively and simultaneously separate multiple wavelength channel signals without any optical time delays among, different wavelength channels, includes one optical circulator with four terminal ports, one polarization beam splitter (PBS), one half-wave plate, and a number of Brag, gratings formed in an optical waveguide for reflection of multi-wavelength channels by combining the wavelength characteristic of each Bragg grating which is determined in accordance with the grating structure.

摘要翻译： 一种改进的多波长信道传输滤波器，其中可以选择性地并且同时地分离不同波长信道之间没有任何光时延的多个波长信道信号，包括一个具有四个终端端口的光循环器，一个偏振分束器（PBS） ，一个半波片和多个Brag光栅，形成在用于反射多波长通道的光波导中，通过组合根据光栅结构确定的每个布拉格光栅的波长特性。

公开(公告)号：US5999545A

公开(公告)日：1999-12-07

申请号：US971678

申请日：1997-11-17

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： G02B6/00 ,  H01S3/067 ,  H01S3/098 ,  H01S3/106 ,  H01S3/30

CPC分类号： H01S3/067 ,  H01S3/1068 ,  H01S3/1109 ,  H01S3/1121

摘要： The present invention discloses an optical fiber laser and a method of harmonic mode locking utilizing the optical fiber laser, which is capable of locking a harmonic frequency occurred by inserting an optical modulator between a Faraday rotator mirror and a non-linear amplifying loop mirror to coincide the frequency component of the optical modulator with the frequency component of the longitudinal mode of the laser. In order to achieve the object of the present invention, it comprises an optical fiber laser which comprises a non-linear amplifying loop mirror, a linear mirror and an optical fiber directional coupler or fiber coupler.

摘要翻译： 本发明公开了一种使用光纤激光器的光纤激光器和谐波模式锁定方法，其能够通过在法拉第旋转镜和非线性放大环形反射镜之间插入光学调制器来锁定所发生的谐波频率，使其一致 具有激光纵向模式的频率分量的光调制器的频率分量。 为了实现本发明的目的，它包括一个包括非线性放大环路镜，线性反射镜和光纤定向耦合器或光纤耦合器的光纤激光器。

公开(公告)号：US5734665A

公开(公告)日：1998-03-31

申请号：US710525

申请日：1996-09-18

申请人： Min-Yong Jeon ,  Wang-Yuhl Oh ,  Hak-Kyu Lee ,  Kyong-Hon Kim ,  El-Hang Lee

发明人： Min-Yong Jeon ,  Wang-Yuhl Oh ,  Hak-Kyu Lee ,  Kyong-Hon Kim ,  El-Hang Lee

IPC分类号： H01S3/00 ,  G02F1/35 ,  H01S3/067 ,  H01S3/30

CPC分类号： H01S3/067 ,  G02F1/3519

摘要： An optical fiber laser is disclosed capable of generating an ultrashort pulse which has intensive energy and is stable against polarization by using a sagnac loop mirror and a Faraday rotator mirror, which includes a light pumping laser diode; an erbium doped fiber-added optical fiber; a wavelength division multiplier fiber coupler; a dispersion shifted fiber; and an optical fiber directional coupler; a nonlinear amplifier loop mirror; a second polarization controller; a linear mirror having a Faraday rotator mirror for rotating the polarization plane of a proceeding light wave; and a directional coupler being connected between the nonlinear amplifier loop mirror and the linear mirror.

摘要翻译： 公开了一种光纤激光器，其能够通过使用包括光泵浦激光二极管的sagnac环形反射镜和法拉第旋转镜来产生具有强力能量并且对极化稳定的超短脉冲; 掺铒光纤的光纤; 波分复用光纤耦合器; 色散位移光纤; 和光纤定向耦合器; 非线性放大器环路镜; 第二偏振控制器; 线性反射镜，其具有用于旋转正在进行的光波的偏振面的法拉第旋转镜; 以及在非线性放大器环路镜和线性反射镜之间连接的定向耦合器。

公开(公告)号：US08040523B2

公开(公告)日：2011-10-18

申请号：US12511803

申请日：2009-07-29

申请人： Kyong Hon Kim ,  Seunghwan Kim ,  Seounghun Lee ,  Elhang Lee

发明人： Kyong Hon Kim ,  Seunghwan Kim ,  Seounghun Lee ,  Elhang Lee

IPC分类号： G01B9/02 ,  G01J3/45 ,  G01N21/00

CPC分类号： G01M11/335 ,  G01M11/331 ,  G01M11/338

摘要： The present invention relates to a measurement method of the chromatic dispersion of an optical waveguide using an optical interferometer with a broadband multi-wavelength light source and an optical spectrum analyzing apparatus, wherein one arm, called “reference arm” of the interferometer's two arms has an adjustable air spacing and the other arm, called “sample arm” can contain said optical waveguide to be measured, and including the following measurement and analysis steps: measuring interference spectra of the optical beam output exiting from the said interferometer with an optical spectrum analyzing apparatus when said optical waveguide is connected to said sample arm, and when said optical waveguide is not connected to said sample arm respectively; by adjusting the reference arm length for appearance of clear interference patterns; converting the wavelength-domain interference spectra into frequency-domain interference spectra and calculating phase difference values of the interference peaks of one of the spectra from a predetermined reference peak as a function of the frequency change by counting the interference peak (or valley) points; finding a Taylor series curve fit function for each set of the phase difference value data corresponding to each of the two interference spectra; and calculating a chromatic dispersion coefficient of the optical waveguide by using the coefficients of the Taylor series curve fit functions.

摘要翻译： 本发明涉及使用具有宽带多波长光源的光学干涉仪和光谱分析装置的光波导的色散的测量方法，其中干涉仪的两个臂的称为“参考臂”的一个臂具有 称为“样品臂”的可调节空气间距可以包含待测量的所述光波导，并且包括以下测量和分析步骤：测量从所述干涉仪离开的光束输出的干涉光谱与光谱分析 当所述光波导连接到所述样品臂时，并且当所述光波导分别不连接到所述样品臂时， 通过调整参考臂的长度来显现干扰图形的清晰度; 将波长域干涉光谱转换成频域干涉光谱，并通过对干扰峰（或谷）点进行计数，计算作为频率变化的函数的来自预定参考峰的一个频谱的干扰峰的相位差值; 针对与两个干涉光谱中的每一个相对应的每组相位差值数据，找到泰勒级数曲线拟合函数; 以及通过使用泰勒级数曲线拟合函数的系数来计算光波导的色散系数。