公开(公告)号：KR100472055B1

公开(公告)日：2005-03-10

申请号：KR1020020061670

申请日：2002-10-10

Applicant: 한국전자통신연구원

Inventor： 서홍석 ,  최용규 ,  김경헌

IPC: G02B6/02

CPC classification number: C03C13/046 ,  G02B6/02 ,  G02B6/02261 ,  G02B6/02271 ,  H01S3/0941 ,  H01S3/1691 ,  H01S3/1695 ,  H01S3/176 ,  H01S3/302

Abstract: 본 발명은 전송용 광섬유에 관한 것으로, SiO
2 로 이루어진 코어 및 클래딩을 포함하는 전송용 광섬유에 있어서, 코어 및 클래딩의 SiO
2 에 GeO
2 및 F가 도핑된 것을 특징으로 한다. 따라서, 코어 및 클래딩의 굴절률을 조정하여 원하는 분산 값과 낮은 비선형성을 유지하면서 높은 라만 이득계수를 얻을 수 있고, 레이저 다이오드의 펌프파워를 줄일 수 있고, 펌프파워를 줄임으로 해서 레이저 다이오드의 가격을 인하할 수 있으며, 레이저 다이오드가 고출력으로 동작하지 않아도 되기 때문에 수명이 연장되는 효과가 있다.

公开(公告)号：KR1020040026291A

公开(公告)日：2004-03-31

申请号：KR1020020057685

申请日：2002-09-24

Applicant: 한국전자통신연구원

Inventor： 최용규 ,  박봉제 ,  서홍석 ,  조두희 ,  김경헌 ,  이태훈 ,  허종

IPC: G02B6/00

CPC classification number: H01S3/094003 ,  H01S3/161

Abstract: PURPOSE: An optical amplifier is provided to improve the pumping efficiency by using phosphors of 1.6 micrometer emitted from ions of holmium added to an optical fiber or an optical waveguide. CONSTITUTION: An optical amplifier includes an optical member, a pumping unit, an input unit, a WDM coupler, and an output unit. The optical member includes a core including holmium and a clad. The pumping unit is optically connected to the pumping unit in order to irradiate the pumping light to the optical member. The pumping unit includes the first light source for emitting light of a wavelength band of 11,200 to 11,500 cm¬-1 and the second light source for emitting light of a wavelength band of 6,000 to 6,500 cm¬-1. The input unit inputs an optical signal to the optical member. The WDM coupler is used for coupling incident signal light of the input unit and the pumping light of the pumping unit. The output unit receives an amplified signal of the optical member.

Abstract translation: 目的：提供一种光放大器，通过使用从加入到光纤或光波导中的钬的离子发射的1.6微米的荧光体来提高泵浦效率。 构成：光放大器包括光学部件，泵送单元，输入单元，WDM耦合器和输出单元。 光学构件包括包括钬和包层的芯。 泵送单元光学地连接到泵送单元以便将泵浦光照射到光学构件。 泵送单元包括用于发射波长带11,200至11,500cm -1的光的第一光源和用于发射6,000至6,500cm -1的波段的光的第二光源。 输入单元将光信号输入到光学构件。 WDM耦合器用于耦合输入单元的入射信号光和泵送单元的泵浦光。 输出单元接收光学构件的放大信号。

公开(公告)号：KR100420951B1

公开(公告)日：2004-03-02

申请号：KR1020020020903

申请日：2002-04-17

Applicant: 한국전자통신연구원

Inventor： 김종배 ,  박상기 ,  최용규 ,  주정진

IPC: G02B6/00

CPC classification number: G02F1/3558 ,  G02B6/29394 ,  G02F2201/02

Abstract: A method of fabricating a poled fiber and a dispersion compensator. The method including patterning to cover an etching-resistant material on the body portions of the cladding and on one end or both ends of the optical fiber excluding the portions to be grooved in the longitudinal direction, etching the bare portions of the cladding excluding the portions covered with the etching-resistant material, evaporating electrodes on the etched portions and applying a voltage to the electrodes, and inducing periodic poling generating optical phenomenon of the second-order nonlinearity to the optical fiber through the patterned electrodes. The compensator including a periodic poled fiber to generate a phase conjugate wave of a difference frequency between a pump light and a signal light received from a fiber coupler, and a filter to pass the phase conjugate wave coming out from the periodic poled fiber.

Abstract translation: 一种制造极化光纤和色散补偿器的方法。 该方法包括构图以覆盖包层主体部分上的抗蚀刻材料，并且在光纤的一端或两端除了在纵向方向上要被开槽的部分之外，腐蚀包层的裸露部分，除了部分 用耐蚀刻材料覆盖，在蚀刻部分上蒸发电极并向电极施加电压，并且通过图案化电极向光纤引起产生二阶非线性光学现象的周期性极化。 该补偿器包括周期性极化光纤以产生泵浦光和从光纤耦合器接收的信号光之间的差频的相位共轭波，以及使来自周期性极化光纤的相位共轭波通过的滤波器。

公开(公告)号：KR1020030001688A

公开(公告)日：2003-01-08

申请号：KR1020010036514

申请日：2001-06-26

Applicant: 한국전자통신연구원

Inventor： 최용규 ,  박봉제 ,  김경헌

IPC: G02B6/00

CPC classification number: H01S3/06716 ,  H01S3/06754 ,  H01S3/161 ,  H01S3/1618

Abstract: PURPOSE: A holmium-doped glass optical fiber composite and a glass optical fiber and an optical amplifier using the same are provided, which enables an amplification of an optical signal in the bandwidth of 1340-1410nm. CONSTITUTION: According to the glass optical fiber composite including a core containing holium(Ho) and a clad containing more than one of a transition metal ion or a rare earth ion, the holium is doped below 0.5 mol %, and a representative phonon energy is below 600 cm-1, and an absorption band in a short wavelength is below 530 nm. An Ytterbium(Yb) below 1mol% is further doped to the core. The transition metal ion is selected among Ti(3+), V(5+), Cr(3+) and Ca(2+). And the rare earth ion is selected among Ee(3+), Tb(5+), Eu(3+) and Nd(2+).

Abstract translation: 目的：提供钬掺杂玻璃光纤复合材料和玻璃光纤以及使用其的光放大器，能够在1340-1410nm的带宽内放大光信号。 构成：根据包含含有钬（Ho）的核和包含多于一种过渡金属离子或稀土离子的包层的玻璃光纤复合材料，所述ium掺杂低于0.5mol％，并且代表性的声子能为 低于600cm -1，短波长的吸收带低于530nm。 将低于1mol％的镱（Yb）进一步掺杂到芯中。 过渡金属离子选自Ti（3+），V（5+），Cr（3+）和Ca（2+）。 稀土离子选自Ee（3+），Tb（5+），Eu（3+）和Nd（2+）。

公开(公告)号：KR100363848B1

公开(公告)日：2002-12-06

申请号：KR1019990030308

申请日：1999-07-26

Applicant: 한국전자통신연구원

Inventor： 김경헌 ,  최용규 ,  이학규 ,  전민용 ,  안준태 ,  임동성 ,  김호영 ,  장도일

IPC: G02B26/08

CPC classification number: G02F1/3132 ,  G02F1/225 ,  H01S5/4068 ,  H01S5/50

Abstract: 본발명에서는광통신기술에사용되고있는기존의도파로형광 스위치가가지는광 손실과이로인한간편한구도의집적소자가곤란한부분을해결하고자, 형광발생재료를이용한광 도파로에파장분할다중광 커플러(WDM coupler)를통하여광 펌핑(optical pumping)을하여이 도파로를지나가는광신호를증폭함과동시에전기제어(electrical control) 또는광 제어(optical control)에의한광 도파로의굴절률변화(waveguide's refractive index change)를이용하여광 스위치기능을하는평면도파로형광 증폭기스위치(Planar waveguide-type optical amplifier switch)에관한것이다. 광도파로상에광 스위치및 광증폭이동시에일어나도록하는광 증폭기스위치구도는광 스위칭이되면서스위치되는광신호의광증폭이동시에일어나도록하여더욱실용적이고간편하게집적이가능한광 스위치소자를가능하게한다. 본도파로형광 증폭기스위치는기존에사용되고있는광 스위치들의대체효과가크고, 향후대용량광통신시스템의확보와더불어대용량광신호처리, 광교환, 광컴퓨터등에서의기술발전을유도하는효과가있다.

公开(公告)号：KR1020020080620A

公开(公告)日：2002-10-26

申请号：KR1020010020281

申请日：2001-04-16

Applicant: 한국전자통신연구원

Inventor： 김경헌 ,  안준태 ,  최용규 ,  조두희

IPC: G02B6/293

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

Abstract: PURPOSE: A high wavelength selector, and multi-channel selector for space and wavelength in high speed optical integrated circuit using the high wavelength selector is provided to solve problems of process complication, high costs and low-rate production by using an optical waveguide switch made of electro-optical polymer and glass materials. CONSTITUTION: An apparatus for selecting a high speed quantum integrated space and a wavelength multiplexing channel by using the high speed wavelength selector includes a spatial multiplexing channel selector(A), N channel high speed wavelength selector(B), an optical amplifier(106) and a wavelength convertor(105). The spatial multiplexing channel selector(A) is provided with an optical waveguide switch(104) made of a planar waveguide integration type and 1 x M channel couplers(107) and formed on an input terminal of the optical waveguide for selecting the spatial multiplexing optical signal channel in high speed to output. The optical amplifier(106) is installed on an optical waveguide(101) between a spatial multiplexing channel selection switch(A) made of a planar waveguide integration type and N channel high speed wavelength selector(B) and amplifies an optical signal passing therethrough to output the amplified optical signal to the N channel high speed wavelength selector(B). The N channel high speed wavelength selector(B) installed on the optical waveguide(101) in the output terminal of the optical amplifier(106) selectively outputs the amplified optical signal as a channel wavelength.

Abstract translation: 目的：使用高波长选择器的高速光学集成电路中的高波长选择器和多通道选择器用于高速光学集成电路，以通过使用光波导开关来解决工艺复杂性，高成本和低速率生产的问题 的电光聚合物和玻璃材料。 一种用于通过使用高速波长选择器来选择高速量子积分空间和波长多路复用通道的装置，包括空间复用通道选择器（A），N通道高速波长选择器（B），光放大器（106） 和波长转换器（105）。 空间复用通道选择器（A）设置有由平面波导集成型和1×M通道耦合器（107）制成的光波导开关（104），并形成在光波导的输入端上，用于选择空间复用光 信号通道以高速输出。 光放大器（106）安装在由平面波导积分型空间多路复用通道选择开关（A）和N通道高速波长选择器（B）之间的光波导（101）上，并放大通过其的光信号 将放大的光信号输出到N通道高速波长选择器（B）。 安装在光放大器（106）的输出端子上的光波导（101）上的N通道高速波长选择器（B）选择性地输出放大的光信号作为通道波长。

公开(公告)号：KR1020020053984A

公开(公告)日：2002-07-06

申请号：KR1020000082265

申请日：2000-12-26

Applicant: 한국전자통신연구원

Inventor： 임동성 ,  안준태 ,  전민용 ,  최용규 ,  김경헌

IPC: H04B10/2507 ,  H04B10/2537

CPC classification number: H01S3/06791 ,  H01S3/08013 ,  H01S3/094003

Abstract: PURPOSE: A mode locking optical fiber laser oscillating apparatus is provided to stabilize a laser oscillator on a real time basis by stabilizing a length of an optical fiber laser oscillator by feeding a frequency change as an error signal back to the laser oscillator by using the fact that a frequency transition value of a Brillouin signal is sensitive to a temperature. CONSTITUTION: A Brillouin pump(101) generates a Brillouin pump signal to generate a Brillouin signal. A single mode optical fiber(102) generates a Brilliouin stimulated scattering. A directional first optical fiber coupler(103) inserts the Brillouin pump signal into an oscillator. An optical circulator(104) outputs a returning Brillouin signal. A semiconductor laser(112) serves as an excitation pump optical source for an optical pump to an erbium addition optical fiber(111) for a mode locking optical fiber laser oscillation. The second optical fiber coupler(113) couples optical signals. A function generator(114) generates a signal. An optical modulator(115) makes an active mode locking through a signal inputted from the external function generator(114). The third optical fiber coupler(116) monitors a mode locked laser output. An optical isolator(117) proceeds an optical signal in one direction. An optical fiber PZT(121) is electrically and variably shrunken and expanded to stabilize a length of the oscillator. An optical receiver(122) receives the Brillouin signal. A frequency comparator(123) compares the Brillouin signal detected from the optical receiver(122) and the frequency of the signal generated from the function generator(114). A frequency-voltage converter(124) converts the signal output from the frequency comparator(123) into an electric signal. An electric amplifier(125) amplifies the electric signal converted by the frequency-voltage converter(124).

Abstract translation: 目的：提供一种模式锁定光纤激光振荡装置，用于通过将频率变化作为误差信号馈送回激光振荡器来稳定光纤激光振荡器的长度来实时稳定激光振荡器，通过使用事实 布里渊信号的频率转换值对温度敏感。 构成：布里渊泵（101）产生布里渊泵浦信号以产生布里渊信号。 单模光纤（102）产生Brilliouin受激散射。 定向第一光纤耦合器（103）将布里渊泵浦信号插入振荡器。 光循环器（104）输出返回的布里渊信号。 半导体激光器（112）用作用于光锁定光纤激光器振荡的铒添加光纤（111）的光泵的激励泵浦光源。 第二光纤耦合器（113）耦合光信号。 函数发生器（114）产生信号。 光调制器（115）通过从外部功能发生器（114）输入的信号进行主动模式锁定。 第三光纤耦合器（116）监视模式锁定的激光输出。 光隔离器（117）沿一个方向进行光信号。 光纤PZT（121）电和可变地收缩和扩展以稳定振荡器的长度。 光接收器（122）接收布里渊信号。 频率比较器（123）比较从光接收器（122）检测的布里渊信号和从功能发生器（114）产生的信号的频率。 频率 - 电压转换器（124）将从频率比较器（123）输出的信号转换为电信号。 电放大器（125）放大由频率 - 电压转换器（124）转换的电信号。

公开(公告)号：KR1020020010772A

公开(公告)日：2002-02-06

申请号：KR1020000044233

申请日：2000-07-31

Applicant: 한국전자통신연구원

Inventor： 최용규 ,  김경헌

IPC: G02B6/00

CPC classification number: C03C3/321 ,  H01S3/06754 ,  H01S3/1613 ,  H01S3/17 ,  H01S3/172 ,  H01S2302/00

Abstract: PURPOSE: An optical amplifier system of 1.6 micrometer band is provided to be capable of being used in 1600-1650nm band using near infrared rays radiated from amorphous material having praseodymium ions(Pr+3) added. CONSTITUTION: The optical amplifier system comprises optical material with representative substantial phonon energy of 320 cmexp(-1), praseodymium ions(Pr+3) doped into the optical material, and an exciter for inducting fluorescent transition of 1.6 micrometer band by pumping the optical material. In addition, the optical amplifier system may further comprise erbium ions as a synthesizer doped into the optical material. The adding amount of the praseodymium ions(Pr+3) is substantially 0.1 mole% or less. Further, it is preferable that the optical material is praseodymium system glass.

Abstract translation: 目的：提供1.6微米波段的光放大器系统，能够使用从添加有镨离子（Pr + 3）的无定形材料辐射的近红外线在1600-1650nm波段使用。 构成：光放大器系统包括具有320cmexp（-1）的典型重要声子能量，掺杂到光学材料中的镨离子（Pr + 3））的光学材料，以及用于通过泵送光学器件来感应1.6微米波段的荧光跃迁的激发器 材料。 此外，光放大器系统还可以包括作为掺杂到光学材料中的合成器的铒离子。 镨离子（Pr + 3）的添加量基本上为0.1摩尔％以下。 此外，优选的是，光学材料是镨系玻璃。

公开(公告)号：KR100312433B1

公开(公告)日：2001-11-05

申请号：KR1019990056201

申请日：1999-12-09

Applicant: 한국전자통신연구원

Inventor： 최용규 ,  임동성 ,  조두희 ,  김경헌

IPC: G02B6/00

CPC classification number: H01S3/06716 ,  H01S3/1606 ,  H01S3/1616 ,  H01S2301/02

Abstract: 본발명은 1450 ㎚대역에서이득을나타내는툴륨이온을첨가한광섬유증폭기가 800 ㎚대역에서발생하는증폭된자발방출때문에이득이포화되는현상을방지하여결과적으로 1450 ㎚대역에서의이득특성을향상시킬수 있는툴륨첨가광섬유증폭기의증폭효율향상을위한복합희토류이온첨가광섬유에관한것으로, 그내부에툴륨이온첨가층을포함하는코어, 코어를둘러싸는클래드및 상기툴륨이온첨가층으로부터발생하는 800 ㎚파장대역의형광을흡수하기위하여상기툴륨이온첨가층으로부터이격되어형성된에너지흡수이온첨가층을포함하는광섬유를제공한다. 상기에너지흡수이온첨가층은디스프로슘또는네오디뮴이온중 적어도어느하나가첨가되고, 코어내부에위치하거나또는클래드내부에위치하며, 툴륨이온첨가층과상기에너지흡수이온이온층과의거리는최소 20 ㎚이다. 또한, 본발명은전술한광섬유구조를포함하는광증폭기및 레이저를제공한다.

公开(公告)号：KR1020010037650A

公开(公告)日：2001-05-15

申请号：KR1019990045301

申请日：1999-10-19

Applicant: 한국전자통신연구원

Inventor： 조두희 ,  최용규 ,  김경헌

IPC: G02B6/00

Abstract: PURPOSE: A method for driving an amplifier and a thulium doped fiber amplifier using the method are provided to effectively reverse the density between (¬3)H4-(¬3)F4 level by radiating the first pump light together with the second pump light towards an optical fiber. CONSTITUTION: An optical device using a thulium doped fiber amplifier comprises a core(21) made of glass to which thulium ions are added. An internal cladding(22) is provided to surround the core(21). The internal cladding(22) has a refraction rate higher than the refraction rate of the core(21) and is made of glass to which neodymium ions are added. An outer cladding(23) is provided to surround the internal cladding(22). The outer cladding(23) has a refraction rate higher than the refraction rate of the internal cladding(22). An optical grating is provided at front and rear portions of the optical fiber.

Abstract translation: 目的：提供一种使用该方法驱动放大器和ium掺杂光纤放大器的方法，以通过将第一泵浦光与第二泵浦光一起辐射来有效地逆转（¬3）H4-（¬3）F4电平之间的密度 光纤。 构成：使用ium掺杂光纤放大器的光学器件包括由玻璃制成的芯（21），铌离子被添加到该芯。 提供内包层（22）以围绕芯部（21）。 内部包层（22）具有比芯部（21）的折射率高的折射率，并且由添加了钕离子的玻璃制成。 提供外包层（23）以包围内包层（22）。 外包层（23）的折射率高于内包层（22）的折射率。 在光纤的前部和后部设有光栅。