公开(公告)号：KR1020050040957A

公开(公告)日：2005-05-04

申请号：KR1020030075799

申请日：2003-10-29

Applicant: 한국전자통신연구원

Inventor： 한기호 ,  이왕주 ,  고제수

IPC: H04B10/07 ,  H04B10/2569 ,  H04B10/2581

CPC classification number: H04B10/07953 ,  H04B10/532 ,  H04J14/02 ,  H04J14/06

Abstract: 광신호 감시장치 및 방법이 개시된다. 편광조절부는 전송광섬유를 통해 수신된 광신호의 편광성분의 상태와 방향을 변환한다. 편광빔분할부는 편광조절부로부터 출력된 광신호로부터 서로 수직인 제1편광성분 및 제2편광성분을 분리한다. 광세기측정부는 제1편광성분의 광세기를 측정한다. 피드백제어부는 제2편광성분의 전기적 스펙트럼을 이용하여 광신호의 제1편광성분및 제2편광성분이 편광빔분할부의 두 축에 정렬되도록 편광조절부를 제어한다. 스크램블러는 피드백제어부에 의해 제1편광성분 및 제2편광성분이 편광빔분할부의 두 축에 정렬되면 전송광섬유로 입력되는 광신호를 스크램블링한다. 이로써, WDM 전송광시스템에서 채널별로 ASE 잡음의 세기가 다른 경우 및 전송광링크상에 편광모드분산(PMD)이 존재하는 경우에 정확한 광신호대잡음비(OSNR)을 측정할 수 있다.

公开(公告)号：KR100467328B1

公开(公告)日：2005-01-24

申请号：KR1020030015685

申请日：2003-03-13

Applicant: 한국전자통신연구원

Inventor： 김병성 ,  고제수

IPC: H04Q1/00

Abstract: PURPOSE: An indoor optical terminal box is provided to reduce the number of connection optical fibers and effectively re-connect even though a communication equipment is additionally installed or moved. CONSTITUTION: A photocoupler(13) transmits a data optical signal, among output signals of an optical switch(11), to an external communication equipment(510). A PD(Photo Detector)(14) detects a switching state information optical signal among the output optical signals of the optical switch(11) and converts it into an electric signal. A switch controller(15) controls a switching state of the optical switch(11) and focusing the electric signal that has been converted in the photodetector(14). An optical adapter(16) connects an indoor optical terminal box(10) with the external communication equipment(510). A central control station(1) receives the switching state information that has been converted into the electric signal from the switch controller(15) of the indoor optical terminal box(10) and controls a switching state of each indoor optical terminal box(10).

Abstract translation: 目的：提供室内光学终端盒，以减少连接光纤的数量，并且即使通信设备被额外安装或移动也能有效地重新连接。 构成：光电耦合器（13）将光开关（11）的输出信号中的数据光信号发送到外部通信设备（510）。 PD（光检测器）（14）检测光开关（11）的输出光信号中的开关状态信息光信号并将其转换为电信号。 开关控制器（15）控制光开关（11）的开关状态并聚焦已经在光电探测器（14）中转换的电信号。 光学适配器（16）将室内光学终端盒（10）与外部通信设备（510）连接。 中央控制站（1）接收从室内光学终端盒（10）的开关控制器（15）转换成电信号的开关状态信息，并控制每个室内光学终端盒（10）的开关状态， 。

公开(公告)号：KR100462407B1

公开(公告)日：2004-12-17

申请号：KR1020020068913

申请日：2002-11-07

Applicant: 한국전자통신연구원

Inventor： 명승일 ,  이정찬 ,  고제수

IPC: H04B10/60

CPC classification number: H04B10/695 ,  H04B10/0799 ,  H04B10/69 ,  H04L1/0047 ,  H04L25/063

Abstract: Optical signals transmitted through an optical cable are converted into digital data of bits "1" and "0" on the basis of a reference voltage, and errors generated during transmission of the optical signals are corrected using Forward Error Correction (FEC). A method includes extracting numbers of occurrence of errors for bits "1" and "0" recovered through the FEC. Thereafter, the extracted numbers of occurrence of errors for bits "1" and "0" are compared with each other. A reference voltage used to judge levels of the signals to be level "1" or "0" is controlled if the numbers of occurrence of errors for bits "1" and "0" are not equal to each other. The current reference voltage is maintained if the numbers of occurrence of errors for bits "1" and "0" are rendered equal to each other.

Abstract translation: 通过光缆传输的光信号被转换成比特“1”的数字数据， 和“0” 基于参考电压，并且使用前向纠错（FEC）来校正光信号传输期间产生的误差。 一种方法包括提取比特“1”的错误发生次数。 和“0” 通过FEC恢复。 之后，提取比特“1”的错误出现次数。 和“0” 相互比较。 用于判断信号电平为电平“1”的参考电压 或“0” 如果用于比特“1”的错误出现的次数被控制， 和“0” 彼此不相等。 如果用于比特“1”的错误发生的次数保持当前基准电压， 和“0” 彼此相等。

公开(公告)号：KR100440569B1

公开(公告)日：2004-07-21

申请号：KR1020010082099

申请日：2001-12-20

Applicant: 한국전자통신연구원

Inventor： 이훈 ,  고제수 ,  유태환

IPC: H04L7/00

CPC classification number: H04L5/06 ,  G06F1/10 ,  H03L7/06 ,  H04L7/02

Abstract: A clock distribution device for a multiband modem which is capable of recovering a clock from a received signal of a highest-performance one of multiple bands and applying the recovered clock for clocks of the other bands. The clock distribution device recovers a clock from a received signal and distributes the recovered clock to multiple bands. That is, the clock distribution device is adapted to recover a symbol clock or sampling clock of a certain band from a received multiband signal, generate a high-frequency clock on the basis of the recovered clock, generate a highest-frequency clock among clocks necessary to each of the multiple bands on the basis of the generated high-frequency clock, and generate and distribute all the clocks necessary to each of the multiple bands on the basis of the generated highest-frequency clock.

Abstract translation: 一种用于多频带调制解调器的时钟分配装置，它能够从多个频带中性能最好的一个频带的接收信号中恢复时钟，并将恢复的时钟用于其它频带的时钟。 时钟分配设备从接收到的信号中恢复时钟，并将恢复的时钟分配到多个频段。 也就是说，时钟分配装置适用于从接收的多频带信号中恢复某个频带的符号时钟或采样时钟，基于恢复的时钟生成高频时钟，在需要的时钟之中生成最高频率的时钟 基于所生成的高频时钟向多个频带中的每个频带分配多个频带，并基于生成的最高频率时钟生成并分配多个频带中的每个频带所需的所有时钟。

公开(公告)号：KR1020040040708A

公开(公告)日：2004-05-13

申请号：KR1020020068907

申请日：2002-11-07

Applicant: 한국전자통신연구원

Inventor： 방준학 ,  고제수

IPC: G02F2/02

CPC classification number: G02F2/004 ,  G02F1/3536 ,  G02F2002/006 ,  H01S5/5054

Abstract: PURPOSE: An optical wavelength conversion apparatus of an XGM(Cross Grain Modulation) type having a high extension ratio and a wide input dynamic area is provided to have a high extension ratio by making a probe light to be affected with a gain modulation by using two SOA(Semiconductor Optical Amplifier)s. CONSTITUTION: A continuous oscillation(CW) light source is arranged at the front and back ends(two SOAs(215,221)). The probe light affected by a pump light(213) of the front end in the first SOA(215) with a cross gain modulation is affected by the second SOA(221) of the back end with the cross gain modulation one more. A first control device(230) and a second control device(240) sense the intensity of light of the first pump light(213) and second pump light(204) inputted from the first and second SOAs(215,221). According to the intensity of each pump light, the probe light inputted to the first and second SOAs(215,221) is controlled, thereby improving the input dynamic area widely.

Abstract translation: 目的：提供具有高扩展比和宽输入动态面积的XGM（十字晶格调制）型的光波长转换装置，通过使用两个方式使探测光受到增益调制的影响而具有高扩展比 SOA（半导体光放大器） 构成：连续振荡（CW）光源布置在前端和后端（两个SOA（215,221））。 受交叉增益调制的第一SOA（215）中的前端的泵浦光（213）的探测光受到具有交叉增益调制的后端的第二SOA（221）的影响。 第一控制装置（230）和第二控制装置（240）感测从第一和第二SOAs（215,221）输入的第一泵浦光（213）和第二泵浦光（204）的光强度。 根据每个泵浦光的强度，控制输入到第一和第二SOAs（215,221）的探测光，从而大大改善输入动态范围。

公开(公告)号：KR1020040022533A

公开(公告)日：2004-03-16

申请号：KR1020020054129

申请日：2002-09-09

Applicant: 한국전자통신연구원

Inventor： 방준학 ,  고제수

IPC: G02B6/00

Abstract: PURPOSE: A wavelength converter with high extinction ratio using cross gain modulation is provided to improve the extinction ratio by enlarging the modulation width of the probe light. CONSTITUTION: A wavelength converter with high extinction ratio using cross gain modulation includes an optical divider, an optical phase controller(211), a first semiconductor optical amplifier(SOA)(201), a first optical filter(209), a second SOA(202) and a second optical filter(210). The optical phase controller(211) adjusts the phase of a second pumping light so as to match with the first pumping light divided by the optical divider. The first semiconductor optical amplifier(SOA)(201) receives the first pumping light and the continuously oscillated prove light and it performs the wavelength conversion for the probe light in response to the inter gain modulation. The first optical filter(209) passes only the wavelength converted probe light. The second SOA(202) receives the second pumping light and the continuously oscillating prove light and again performs the wavelength conversion for the probe light in response to the inter gain modulation. And, the second optical filter(210) passes only the wavelength conversion probe light among the second pumping light and the wavelength conversion probe light.

Abstract translation: 目的：提供使用交叉增益调制的具有高消光比的波长转换器，通过扩大探测光的调制宽度来提高消光比。 构成：使用交叉增益调制的具有高消光比的波长转换器包括光分路器，光相位控制器（211），第一半导体光放大器（SOA）（201），第一滤光器（209），第二SOA 202）和第二滤光器（210）。 光相位控制器（211）调节第二泵浦光的相位，以便与由分光器分开的第一泵浦光匹配。 第一半导体光放大器（SOA）（201）接收第一泵浦光和连续振荡的证明光，并且响应于增益调制执行探针光的波长转换。 第一滤光器（209）仅通过波长转换的探测光。 第二SOA（202）接收第二泵浦光并且连续振荡证明光，并且响应于增益调制再次执行探针光的波长转换。 并且，第二滤光器（210）仅在第二泵浦光和波长转换探测光中通过波长转换探测光。

公开(公告)号：KR1020040007923A

公开(公告)日：2004-01-28

申请号：KR1020020040543

申请日：2002-07-12

Applicant: 한국전자통신연구원

Inventor： 강호용 ,  고제수 ,  유태환

IPC: H04L12/28

CPC classification number: H04L12/5601 ,  H04L2012/5616 ,  H04L2012/5654

Abstract: PURPOSE: A pointer generating apparatus for transmitting structured data in an AAL1(ATM(Asynchronous Transfer Mode) Adaptation Layer type 1) and a method therefor are provided to perform a pointer calculation function capable of calculating a composite boundary about various user data. CONSTITUTION: A control signal generating unit(10) receives a sequence number signal and a start signal, and generates an enable signal and a control signal. An NCY(Next Cycle Boundary) generating unit(11) generates an NCY value by a pointer value and a pointer_P value for recording the sequence of an ATM cell. A modulo calculating unit(12) divides the NCY value inputted from the NCY generating unit(11) by a block size value, and obtains a residual value. A CCY(Current Cycle Boundary) generating unit(13) generates a CCY value by the NCY value inputted from the NCY generating unit(11), the residual value inputted from the modulo calculating unit(12) and the block size value inputted from the outside. A pointer calculating unit(14) generates the pointer value for boundary and the pointer_P value according to the CCY value inputted from the CCY generating unit(13).

Abstract translation: 目的：提供一种用于发送AAL1（ATM（异步传输模式）适配层类型1）中的结构化数据的指针生成装置及其方法，用于执行能够计算关于各种用户数据的复合边界的指针计算功能。 构成：控制信号生成单元（10）接收序列号信号和起始信号，生成使能信号和控制信号。 NCY（下一周期边界）生成单元（11）通过指针值和用于记录ATM信元的序列的指针-P值来生成NCY值。 模数计算单元（12）将从NCY生成单元（11）输入的NCY值除以块大小值，并获得残差值。 CCY（当前周期边界）生成单元（13）通过从NCY生成单元（11）输入的NCY值，从模运算单元（12）输入的残差值和从该运算单元输入的块大小值，生成CCY值 外。 指针计算单元（14）根据从CCY生成单元（13）输入的CCY值生成边界指针值和指针P值。

公开(公告)号：KR1020020039447A

公开(公告)日：2002-05-27

申请号：KR1020000069263

申请日：2000-11-21

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 오왕열 ,  방준학 ,  이상수 ,  이현재 ,  고제수 ,  서완석

IPC: G02B6/38

CPC classification number: H04B10/2916 ,  H01S3/06754 ,  H01S3/302 ,  H04B10/2525

Abstract: PURPOSE: A dispersion compensating Raman amplifier(DCRA) using a depolarizer is provided, which obtains a stable amplification signal by using the depolarizer to remove a polarization of a pump light, and a hybrid fiber amplifier using the same is provided, which increases an efficiency by combining the dispersion compensating Raman amplifier with an EDFA(Erbium Doped Fiber Amplifier). CONSTITUTION: According to the hybrid fiber amplifier using a dispersion compensating Raman amplifier(DCRA)(110), a dispersion compensating Raman amplification unit performs a dispersion compensating amplification of an incident light signal by making a Raman pump light, whose polarization is removed using a depolarizer, be incident in a reverse direction. And a fiber amplifier unit(120) receives the light signal amplified through the above dispersion compensating Raman amplification unit and then amplifies it again. The hybrid fiber amplifier further includes a density inversion improving unit to increase a front density inversion of the dispersion compensating Raman amplification unit.

Abstract translation: 目的：提供使用消偏器的色散补偿拉曼放大器（DCRA），通过使用去偏振器去除泵浦光的偏振，获得稳定的放大信号，并提供使用其的混合光纤放大器，从而提高效率 通过组合色散补偿拉曼放大器与EDFA（掺铒光纤放大器）。 构成：根据使用色散补偿拉曼放大器（DCRA）（110）的混合光纤放大器，色散补偿拉曼放大单元通过制作拉曼泵浦光进行入射光信号的色散补偿放大，其偏振使用 去极化反应方向相反。 并且光纤放大器单元（120）接收通过上述色散补偿拉曼放大单元放大的光信号，然后再次放大。 混合光纤放大器还包括密度反演改善单元，用于增加色散补偿拉曼放大单元的正面密度反转。

公开(公告)号：KR100319781B1

公开(公告)日：2002-01-09

申请号：KR1019990055888

申请日：1999-12-08

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 오왕열 ,  방준학 ,  이상수 ,  이현재 ,  고제수 ,  서완석

IPC: H01S3/067

Abstract: 본발명은하나의브릴루앙어븀광섬유레이저시스템에서 10 ㎓및 20 ㎓의이중간격다파장광을출력하는브릴루앙어븀광섬유레이저에관한것으로, 광섬유사냑거울을내장한광섬유레이저에단일파장의유도브릴루앙산란펌프광을입사하여 10 ㎓간격및 20 ㎓간격의다파장광원을발생시킬수 있는다파장브릴루앙어븀광섬유레이저를구성하는데특징이있다. 본발명에따른다파장브릴루앙어븀광섬유레이저는, 유도브릴루앙산란매질역할의분산천이광섬유와 50/50 광섬유방향성결합기로구성된사냑거울에, 이와함께레이저공진기를구성하는제1 거울과제2 거울을연결하여, 사냑거울과제1 거울로이루어지는제1 레이저공진기및 사냑거울과제2 거울로이루어지는제2 레이저공진기가구성된다.

公开(公告)号：KR100233235B1

公开(公告)日：1999-12-01

申请号：KR1019960055810

申请日：1996-11-20

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 최성혁 ,  이형섭 ,  고제수

IPC: H04B7/04

Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
블록킹이 없는 다단 시간-공간-시간 스위치.
2. 발명이 히결하려고 하는 기술적 과제
공간 스위치 평면을 이용한 연결 방법을 사용하여 스위치 네트(net)를 분산시켜서 스위치 구현시 전체 구조를 쉽게 구현하고자 함.
3. 발명의 해결방법의 요지
전단 시간 스위치는 입력단의 2배에 해당하는 출력단을 구비하고, 후단 시간 스우치는 입력단의 1/2에 해당하는 출력단을구비한 대용량 전송 시스템의 시간-공간-시간 스위치에 있어서, 상기 전단 시간 스위치는 자신의 입력단에 대응하는 2개의 출력단하고만 서로 연결되고, 상기 2개의 출력단들은공간 스위치 평면들과 각각 연결되도록 하여 하나의 입력단이 모든 공간 스위치 평면들과 연결되도록 하고, 상기 후단 시간 스위치는 2개의 입력단에 대응하는 하나의 출력단하고만 서로 연결되고, 상기 2개의 입력단은 공간 스위치 평면들과 각각 연결되도록 하여 후단 시간 스위치의 출력단이 모든 공간 스위치 평면들과 연결되도록 구성됨.
4. 발명의 중용한 용도
대용량 전송 시스템의 다단 스위치에 이용됨.