公开(公告)号：KR100670822B1

公开(公告)日：2007-01-19

申请号：KR1020050099602

申请日：2005-10-21

Applicant: 한국전자통신연구원

Inventor： 안준태 ,  이종무 ,  김경헌

IPC: H01S5/06

Abstract: 직접광변조형 파장변환기를 개시한다. 본 발명에 따른 파장변환기는 연속발진 신호가 필요없는 이득고정형 반도체 광증폭기 또는 반도체 레이저 자체이면서, 이들과 광섬유간의 결합손실을 줄이고 레이저의 발진 문턱값을 높게 한 것이다. 본 발명에 따르면, 파장변환이 일어나는 입력신호광의 세기를 조절할 수 있어 상대적으로 약한 세기의 입력신호광에 대해서도 파장변환이 가능하다.

公开(公告)号：KR1020050107338A

公开(公告)日：2005-11-11

申请号：KR1020050099603

申请日：2005-10-21

Applicant: 한국전자통신연구원

Inventor： 안준태 ,  이종무 ,  김경헌

IPC: H01S5/06

CPC classification number: H01S5/06821 ,  G02B6/29361 ,  H01S5/0605 ,  H01S5/06256

Abstract: 직접광변조형 파장변환기를 개시한다. 본 발명에 따른 파장변환기는 연속발진 신호가 필요없는 이득고정형 반도체 광증폭기 또는 반도체 레이저 자체이면서, 이들과 광섬유간의 결합손실을 줄이고 레이저의 발진 문턱값을 높게 한 것이다. 본 발명에 따르면, 파장변환이 일어나는 입력신호광의 세기를 조절할 수 있어 상대적으로 약한 세기의 입력신호광에 대해서도 파장변환이 가능하다.

公开(公告)号：KR1020040095523A

公开(公告)日：2004-11-15

申请号：KR1020030029441

申请日：2003-05-09

Applicant: 한국전자통신연구원

Inventor： 이종무 ,  안준태 ,  이명현 ,  김경헌

IPC: G02B6/12

Abstract: PURPOSE: A method for fabricating a polymer optical fiber is provided to form a polymer AWG(Arrayed Waveguide Grating) regardless of temperature by offsetting temperature dependence. CONSTITUTION: A lower cladding layer(102) is formed by coating a polymer material on a semiconductor substrate(100). A core layer(106a) is formed by coating the polymer material on the lower cladding layer and patterning the polymer layer. An upper cladding layer(110) is formed by coating the polymer material on the resultant layer. An overlayer is formed by coating the polymer material having a predetermined thermal expansion coefficient when the lower cladding layer is separated from the upper cladding layer. The lower cladding layer is separated partially from the semiconductor substrate.

Abstract translation: 目的：提供一种用于制造聚合物光纤的方法，以通过抵消温度依赖性而与温度无关地形成聚合物AWG（阵列波导光栅）。 构成：通过在半导体衬底（100）上涂覆聚合物材料来形成下包层（102）。 芯层（106a）通过在下包覆层上涂覆聚合物材料并构图聚合物层而形成。 通过在所得层上涂覆聚合物材料形成上包层（110）。 当下包层与上包层分离时，通过涂覆具有预定热膨胀系数的聚合物材料形成覆层。 下包层部分地与半导体衬底分离。

公开(公告)号：KR100433585B1

公开(公告)日：2004-05-31

申请号：KR1020010010426

申请日：2001-02-28

Applicant: 한국전자통신연구원

Inventor： 서호형 ,  안준태 ,  장도일 ,  김경헌

IPC: G03H1/16

Abstract: PURPOSE: A non-contact coupling type binary phase hologram and a method for realizing the same are provided to realize the coupling type binary phase hologram without physically contacting two holograms to each other, thereby preventing the deformation of the holograms due to the wear of the hologram surfaces. CONSTITUTION: A non-contact coupling type binary phase hologram includes a main hologram(510) for diffracting light emitted from a laser, an auxiliary hologram(520) apart from the main hologram by a predetermined distance not to contact the main hologram physically, and the predetermined number of lenses positioned between the main hologram and the auxiliary hologram, of which a first lens(530) carries out the high speed fourier conversion of a phase of the main hologram at a position apart from the main hologram by a predetermined distance, and a second lens(540) carries out fourier inverse conversion of the phase of the main hologram for restoring original phase and information at a position apart from the first lens by a predetermined distance.

Abstract translation: 目的：提供一种非接触耦合型二元相位全息图及其实现方法，以实现耦合型二元相位全息图而不使两个全息图彼此物理接触，由此防止由于 全息图表面。 构成：非接触耦合型二元相位全息图包括用于衍射从激光器发射的光的主全息图（510），与主全息图相距预定距离的辅助全息图（520），而不与物理上接触主全息图，以及 位于主全息图和辅助全息图之间的预定数量的透镜，其中第一透镜（530）将主全息图的相位在离主要全息图预定距离的位置处进行高速傅里叶变换， 和第二透镜（540）对主全息图的相位进行傅里叶逆变换，以恢复原始相位和在与第一透镜相距预定距离的位置处的信息。

公开(公告)号：KR1020040038322A

公开(公告)日：2004-05-08

申请号：KR1020020067219

申请日：2002-10-31

Applicant: 한국전자통신연구원

Inventor： 안준태 ,  박선택 ,  이종무 ,  이명현 ,  김경헌

IPC: G02B6/12

CPC classification number: G02F1/065 ,  G02F1/225 ,  G02F2201/122 ,  G02F2202/022 ,  G02F2203/06

Abstract: PURPOSE: A polarization-independent modulator is provided to turn on-off the optical intensity with a small voltage since it is capable of effectively utilizing the voltage applied thereto from outside. CONSTITUTION: A polarization-independent modulator includes a first optical waveguide core layer, a second optical waveguide core layer, a top cladding layer, a bottom cladding layer, a plurality of electrodes(111a, 111b, 117). The first optical waveguide core layer and the second optical waveguide core layer are connected to each other and include a polymer polarized by an electro-optical effect. The top cladding layer and the bottom cladding layer encompass the first and the second optical waveguide core layers. The plurality of electrodes(111a, 111b, 117) are formed outside of the cladding layers to apply the electric field to the first and the second optical waveguide core layers. And, the electrodes(111a, 111b, 117) are formed on the core layer of the first optical waveguide so as to form the electrical field and the polarization vertical to the substrate and formed on the core layer of the second optical waveguide so as to form the electrical field and the polarization parallel to the substrate.

Abstract translation: 目的：提供一种偏振无关的调制器，以便以较小的电压开启光强度，因为它能够有效地利用从外部施加到其上的电压。 构成：偏振无关调制器包括第一光波导芯层，第二光波导芯层，顶包层，底包层，多个电极（111a，111b，117）。 第一光波导芯层和第二光波导芯层彼此连接并且包括通过电光效应极化的聚合物。 上覆层和下包层包围第一和第二光波导芯层。 多个电极（111a，111b，117）形成在包层的外侧，以将电场施加到第一和第二光波导芯层。 并且，电极（111a，111b，117）形成在第一光波导的芯层上，以形成与基板垂直的电场，并形成在第二光波导的芯层上，从而 形成与基板平行的电场和极化。

公开(公告)号：KR100415625B1

公开(公告)日：2004-01-24

申请号：KR1020010047186

申请日：2001-08-06

Applicant: 한국전자통신연구원

Inventor： 조두희 ,  안준태 ,  전민용 ,  김경헌

IPC: G02B6/13

CPC classification number: G02B6/136 ,  C03C21/005 ,  G02B6/1345 ,  G02B2006/12083

Abstract: The present invention relates to a method of manufacturing a waveguide using an ion exchange process. The present invention controls the refractive index and the thickness of a surface layer on a glass substrate using an ion exchange process, forms the waveguide pattern on the surface layer by means of photolithography and etching process and coats with materials having the refractive index same to or lower than that of the glass substrate to form a cladding layer. Accordingly, the present invention can manufacture a planar waveguide, which is excellent in dimension control and reproducibility and has a sharp step wall.

Abstract translation: 本发明涉及使用离子交换工艺制造波导的方法。 本发明使用离子交换工艺来控制玻璃基板上的表面层的折射率和厚度，通过光刻和蚀刻工艺在表面层上形成波导图案，并涂覆折射率与其相同的材料或 低于玻璃基板的厚度以形成包层。 因此，本发明可以制造尺寸控制和再现性优异并且具有尖锐台阶壁的平面波导。

公开(公告)号：KR1020030095570A

公开(公告)日：2003-12-24

申请号：KR1020020032843

申请日：2002-06-12

Applicant: 한국전자통신연구원

Inventor： 안준태 ,  이종무 ,  김경헌

IPC: H01S5/06

CPC classification number: H01S5/125 ,  H01S5/0601 ,  H01S5/1014 ,  H01S5/1071 ,  H01S5/146 ,  H01S5/147 ,  H01S5/5063 ,  H01S5/5072 ,  H01S5/509

Abstract: PURPOSE: A direct optical modulation type wavelength converter is provided to convert the wavelength of the input signal beam less than -4dBm by using the laser having high oscillating threshold value and an SSC(Spot Size Converter). CONSTITUTION: A direct optical modulation type wavelength converter includes a semiconductor laser(300) and an optical fiber to convert the wavelength of the input signal beam less than -4dBm. The semiconductor laser(300) is formed with a laser using a Fabri-Perot resonator or a DBR(Distributed Bragg Reflector) laser. The semiconductor laser(300) includes an input terminal and an out terminal. A plurality of SSC(270) are installed at the input terminal and the out terminal of the semiconductor laser(300) in order to enhance the coupling efficiency of the light. A DBR(265) is installed between a gain medium(260) and the semiconductor laser(300) in order to oscillate the light corresponding to Bragg wavelength. A loss portion(262) is installed at an opposite-side to the input terminal in order to control an optical loss.

Abstract translation: 目的：提供直接光调制型波长转换器，通过使用具有高振荡阈值的激光器和SSC（光斑尺寸转换器）将输入信号光束的波长转换为小于-4dBm。 构成：直接光调制型波长转换器包括半导体激光器（300）和用于将输入信号光束的波长转换成小于-4dBm的光纤。 半导体激光器（300）使用Fabri-Perot谐振器或DBR（分布式布拉格反射器）激光器形成激光。 半导体激光器（300）包括输入端子和输出端子。 为了提高光的耦合效率，在半导体激光器（300）的输入端子和输出端子上安装有多个SSC（270）。 DBR（265）安装在增益介质（260）和半导体激光器（300）之间，以便使对应于布拉格波长的光振荡。 为了控制光损耗，损耗部分（262）安装在与输入端相反的一侧。

公开(公告)号：KR1020030093748A

公开(公告)日：2003-12-11

申请号：KR1020020031591

申请日：2002-06-05

Applicant: 한국전자통신연구원

Inventor： 이종무 ,  안준태 ,  조두희 ,  박선택 ,  이명현 ,  김경헌

IPC: G02B6/293

CPC classification number: G02B6/12019 ,  G02B2006/121 ,  G02F1/065 ,  G02F2001/212 ,  G02F2203/055 ,  H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0032 ,  H04Q2011/0035

Abstract: PURPOSE: A wavelength selector for wavelength division multiplexing network is provided to shorten the length of an all-optical switch and enhance the switching speed by forming an optical switching portion with a Michelson interferometer. CONSTITUTION: A wavelength selector for wavelength division multiplexing network includes an input portion, a demultiplexing portion(410), and an optical switching portion(420). The demultiplexing portion(410) which is coupled to the input portion divides the input beam of the input portion into beams of different wavelengths and outputs the divided beams. The optical switching portion(420) includes an all-optical switch(424) and a mirror(426). The all-optical switch(424) is used for transmitting the output beams of the demultiplexing portion(410). The mirror(426) is used for reflecting the beams of the all-optical switch(424) to the opposite direction. The optical switching portion(420) selects the beam having a particular wavelength by a Michelson interferometer.

Abstract translation: 目的：提供波分复用网络的波长选择器，以缩短全光开关的长度，并通过用迈克尔逊干涉仪形成光开关部分来提高切换速度。 构成：用于波分复用网络的波长选择器包括输入部分，解复用部分（410）和光学切换部分（420）。 耦合到输入部分的解复用部分（410）将输入部分的输入光束分成不同波长的光束并输出分割光束。 光学切换部分（420）包括全光开关（424）和反射镜（426）。 全光开关（424）用于发射解复用部分（410）的输出光束。 反射镜（426）用于将全光开关（424）的光束反射到相反方向。 光学切换部分（420）通过迈克尔逊干涉仪选择具有特定波长的光束。

公开(公告)号：KR1020030092750A

公开(公告)日：2003-12-06

申请号：KR1020020030542

申请日：2002-05-31

Applicant: 한국전자통신연구원

Inventor： 서홍석 ,  최용규 ,  김경헌

IPC: G02B6/28

CPC classification number: G02B6/3616 ,  G02B6/255 ,  G02B6/2856 ,  G02B6/3636

Abstract: PURPOSE: An apparatus for fabricating a multi optical fiber coupler is provided to reduce fabrication cost of the optical fiber coupler and to fabricate several optical fiber couplers at the same time. CONSTITUTION: A multi micro torch(130) heats a fixed part to fuse a plurality of optical fibers by two in a pair. A multi optical fiber holder(120) is arranged symmetrically on both sides by referring to the micro torch, and fixes the plurality of optical fibers by two in an equal interval. And a transportation stage(110) is loaded with the multi micro torch and the multi optical fiber holder, and enables to move the multi optical fiber holder. And a driving motor(160) moves the optical fiber to move the optical fiber holder.

Abstract translation: 目的：提供一种用于制造多光纤耦合器的装置，以减少光纤耦合器的制造成本并同时制造若干光纤耦合器。 构成：多个微型炬（130）加热固定部分，使多根光纤成对熔合两根。 多光纤保持器（120）通过参照微炬对称地布置在两侧，并且以相等的间隔将多根光纤固定两个。 并且运输台（110）装载有多个微炬和多光纤保持器，并且能够移动多个光纤保持器。 并且驱动电机（160）移动光纤以移动光纤保持器。

公开(公告)号：KR100406527B1

公开(公告)日：2003-11-20

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: An optical amplifier of the present invention includes a pump source for generating a pumping light, a wavelength division multiplexing (WDM) coupler for multiplexing an inputted optical signal and the pumping light and an optical fiber including a core and a clad, wherein the core has holmium ions less than 0.5 mole % and the clad has ions selected from the group consisting of transition metal ions, rare earth ions and a combination thereof. In addition, the phonon energy of a host material is less than 600 cm-1 and an absorption band at short-wavelength side is shorter than 530 nm.

Abstract translation: 本发明的光放大器包括用于产生泵浦光的泵浦源，用于多路复用输入光信号和泵浦光的波分复用（WDM）耦合器，以及包括核心和包层的光纤，其中核心具有 hol离子小于0.5摩尔％且包层具有选自过渡金属离子，稀土离子及其组合的离子。 另外，主体材料的声子能量小于600cm -1，并且短波长侧的吸收带短于530nm。