公开(公告)号：KR100420949B1

公开(公告)日：2004-03-02

申请号：KR1020010049025

申请日：2001-08-14

Applicant: 한국전자통신연구원

Inventor： 최지연 ,  김해근 ,  홍현하 ,  양충열

IPC: H04B10/29

CPC classification number: H04Q11/0005 ,  H04Q2011/0045

Abstract: A method capable of optical packet switching even in a case where physical optical data in an optical packet switch has not the shape of a packet but the shape of continuous data, and a system therefore are provided. The optical switching method includes the steps of (a) detecting input terminals into which an optical packet is input, of an optical switch and switching the optical packet to destination output terminals of the optical packet, and (b) when there are the input terminals into which the optical packet is not inputted in step (a), detecting other input terminals into which the optical packet, which direct an output terminal among the plurality of output terminals connected to the input terminals, is inputted, and searching a blank output terminal and switching dummy data from the input terminal to the blank output terminal. Data having the shape of all input optical packets and data having not the shape of a packet but another shape can be switched into output terminals without omission, and thus data output when input data have the shape of continuous data maintain the shape of the continuous data.

Abstract translation: 即使在光分组交换机中的物理光数据不具有分组形状而是连续数据的形状的情况下也能够进行光分组交换的方法以及系统因此被提供。 该光切换方法包括以下步骤：（a）检测输入光分组的输入端，检测光开关的切换并将光分组切换到光分组的目的输出端，以及（b）当存在输入端 （a）中没有输入光分组的光分组的输入，检测其中输入引导连接到输入端子的多个输出端子中的输出端子的光分组的其他输入端子，以及搜索空白输出端子 并将伪数据从输入端子切换到空白输出端子。 具有所有输入光分组形状的数据和不具有分组形状但是具有其他形状的数据的数据可以在没有遗漏的情况下切换到输出端子，并且因此当输入数据具有连续数据的形状时输出数据保持连续数据的形状 。

公开(公告)号：KR1020000031437A

公开(公告)日：2000-06-05

申请号：KR1019980047486

申请日：1998-11-06

Applicant: 한국전자통신연구원

Inventor： 최지연 ,  이혁재 ,  김해근

IPC: H04L12/433

CPC classification number: H04J14/0205 ,  H04J14/0212

Abstract: PURPOSE: An optical signal buffering device of an optical exchange is provided to enhance a speed of an optical signal by using a control optical signal for delaying an optical signal. CONSTITUTION: An optical signal buffering device of an optical exchange is to combine, distribute, transit, delay, output a transferred optical signal. The optical signal buffering device comprises an optical circulation portion(210), a wavelength multiple optical combination portion(220), a wavelength multiple optical distribution portion(230), a phase transition portion(240), a first delay portion(250), an optical distribution and combination portion(260), a second delay portion(270), and an optical combination portion(280).

Abstract translation: 目的：提供光交换机的光信号缓冲装置，通过使用用于延迟光信号的控制光信号来提高光信号的速度。 构成：光交换机的光信号缓冲装置是组合，分配，转接，延迟，输出传输的光信号。 光信号缓冲装置包括光循环部分（210），波长多光学组合部分（220），波长多重光分配部分（230），相变部分（240），第一延迟部分（250） 光分配和组合部分（260），第二延迟部分（270）和光学组合部分（280）。

公开(公告)号：KR1020030050465A

公开(公告)日：2003-06-25

申请号：KR1020010080895

申请日：2001-12-18

Applicant: 한국전자통신연구원

Inventor： 김봉규 ,  김광준 ,  김병성 ,  김해근

IPC: H04J14/02

CPC classification number: H04B10/572 ,  H01S5/0687 ,  H01S5/4087 ,  H04B10/506 ,  H04J14/02

Abstract: PURPOSE: A multiwavelength fixing method and apparatus using an acousto-optic tunable filter is provided to reduce a signal noise due to a pilot signal by applying the pilot signal to an acousto-optic wavelength filter with different transmission wavelength and frequency conversion according to frequency of an acoustic wave. CONSTITUTION: Lights with different optical frequencies outputted from a light source are multiplexed by a multiplexer(12) and applied to a WDM(Wavelength Division Multiplexing)(10). The multiplexed optical signals are partially transmitted to a transmission system and partially to an acousto-optic tunable filter(14) for multiwavelength fixing. An etalon filter(16) has different transmission characteristics according to a wavelength, so that even if a light with a strength is inputted, the light is outputted with a different strength according to wavelength. An optical divider(15) divides a light into two to use one to measure a light strength and input the other to the etalon filter(16), thereby measuring strength and wavelength of inputted light. Two optical detectors(18,19) detect electrical signals and inputs them to a band pass filter(22). The band pass filter(22) passes only a required specific frequency of plural frequencies included in the inputted light and removes the other remaining frequencies than the specific frequency. A wavelength controller(21) detect wavelength information on corresponding optical frequency by optical frequencies of each light source(11) by using the electric signals with the wavelength detected by the optical detectors(18,19), and compares the detected wavelength information and a desired wavelength of the light source(11). If there is a difference between the two wavelengths, the wavelength controller(21) changes an environmental condition of the light source(11) to obtain the desired wavelength.

Abstract translation: 目的：提供一种使用声光可调谐滤波器的多波长固定方法和装置，以通过将导频信号应用于具有不同传输波长和频率转换的声光波长滤波器，以根据导频信号的频率来减少由于导频信号引起的信号噪声 声波。 构成：从光源输出的具有不同光频率的光由多路复用器（12）复用并施加到WDM（波分复用）​​（10）。 复用的光信号被部分地传输到传输系统并且部分地传输到用于多波长固定的声光可调谐滤波器（14）。 标准具过滤器（16）根据波长具有不同的透射特性，使得即使输入具有强度的光，根据波长以不同的强度输出光。 光分路器（15）将光分成两个，以使用一个来测量光强度，并将另一个光输入到标准具滤光器（16），从而测量输入光的强度和波长。 两个光学检测器（18,19）检测电信号并将其输入到带通滤波器（22）。 带通滤波器（22）仅通过包含在输入的光中的所需的多个频率的特定频率，并且去除比特定频率的其它剩余频率。 波长控制器（21）通过使用由光检测器（18,19）检测到的波长的电信号来检测每个光源（11）的光频率的相应光频率的波长信息，并将检测到的波长信息和 光源（11）的期望波长。 如果两个波长之间存在差异，则波长控制器（21）改变光源（11）的环境条件以获得期望的波长。

公开(公告)号：KR1020030014989A

公开(公告)日：2003-02-20

申请号：KR1020010049025

申请日：2001-08-14

Applicant: 한국전자통신연구원

Inventor： 최지연 ,  김해근 ,  홍현하 ,  양충열

IPC: H04B10/29

CPC classification number: H04Q11/0005 ,  H04Q2011/0045

Abstract: PURPOSE: An optical switching method and an apparatus therefor are provided to use an optical signal having a successive data format as a physical data format in an optical packet switch using a general optical transceiver. CONSTITUTION: An optical switch is switched so that an input terminal number is identical to an output terminal number(401). The optical switch judges an optical packet is inputted according to each channel(402). If the optical packet is inputted, the optical switch is switched to an output terminal having a destination number of the optical packet during a length of the optical packet(403). If the optical packet is not inputted, the optical switch judges whether an optical packet inputted from an other input terminal for the purpose of an output terminal switched to the input terminal in which the optical packet is not inputted exists(404). If the optical packet exists, the optical switch switches the optical packet to a current output terminal, retrieves an other empty output terminal, and switches a current input terminal to the retrieved output terminal(405).

Abstract translation: 目的：提供一种光学切换方法及其装置，以使用具有连续数据格式的光信号作为使用普通光收发器的光分组交换机中的物理数据格式。 构成：切换光开关，使得输入端子号与输出端子号相同（401）。 光开关根据各信道判断光分组是否被输入（402）。 如果光分组被输入，则光开关在光分组（403）的长度期间切换到具有光分组的目的地号码的输出终端。 如果没有输入光学分组，则光开关判断从另一个输入端子输入的输出端子切换到没有输入光学分组的输入端子的光分组是否存在（404）。 如果光分组存在，则光开关将光分组切换到电流输出端，检索另一空输出端，并将电流输入端切换到检索输出端（405）。

公开(公告)号：KR1020010016728A

公开(公告)日：2001-03-05

申请号：KR1019990031781

申请日：1999-08-03

Applicant: 한국전자통신연구원

Inventor： 안주헌 ,  황월연 ,  이명현 ,  이형종 ,  오민철 ,  한선규 ,  김해근

IPC: G02B6/10

Abstract: PURPOSE: A fabrication method of polymer arrayed waveguide wavelength multiplexing/demultiplexing optical element is provided to be simplify in its process by using polymer material and utilize a silicon nitride thin film as a dry etching mask, thereby reducing the insertion loss and cross talk rate of the elements. CONSTITUTION: A polymer waveguide lower clad layer(22) and a polymer waveguide core layer(24) are sequentially coated on a semiconductor substrate(20). Then, an insulation film pattern for an etching mask is formed on the resultant. Next, a portion of the polymer core layer(24) is etched to form a polymer waveguide pattern by using the insulation film pattern as a dry etching mask. Finally, a polymer waveguide upper clad layer(28) is formed on the resultant(20).

Abstract translation: 目的：提供聚合物阵列波导复用/解复用光学元件的制造方法，通过使用聚合物材料简化其工艺过程，并利用氮化硅薄膜作为干蚀刻掩模，从而降低插入损耗和串扰率 元素。 构成：聚合物波导下包层（22）和聚合物波导芯层（24）依次涂覆在半导体衬底（20）上。 然后，在所得物上形成用于蚀刻掩模的绝缘膜图案。 接下来，通过使用绝缘膜图案作为干蚀刻掩模来蚀刻聚合物芯层（24）的一部分以形成聚合物波导图案。 最后，在所得的（20）上形成聚合物波导上包层（28）。

公开(公告)号：KR1020010010639A

公开(公告)日：2001-02-15

申请号：KR1019990029628

申请日：1999-07-21

Applicant: 한국전자통신연구원

Inventor： 안주헌 ,  황월연 ,  이명현 ,  이형종 ,  오민철 ,  한선규 ,  김해근

IPC: G02B6/28

Abstract: PURPOSE: A polymer waveguide grating wavelength division optical device using a GaAs board and a fabrication method thereof are provided to improve the property of the device, and to achieve the integration with the other active device. CONSTITUTION: A n-GaAs lower clad layer(2), an i-lnGaAs absorption layer(3), a p-GaAs upper clad layer(4), and a p-lnGaAs layer(5) are formed on a n-GaAs substrate using a semiconductor thin film deposition equipment for forming an optical detector device. A waveguide of the optical detector device is patterned using an optical etching method. The area around the pattern is coated using a polyimide, thereby limiting the electric property of the optical detector device. A p-ohmic metal layer is formed on the optical detector device, and a n-ohmic metal layer(8) is formed under the optical detector device. A SiNx thin film is deposited on the whole GaAs substrate. A polymer optical waveguide lower clad layer(9), a polymer optical waveguide core layer(10), and a polymer optical waveguide upper clad layer(12) are successively formed using a spin coating method. The polymer material deposited on the optical detector device and the SiNx thin film are removed using a BOE etching solution. A cross section for input and output of a light wave is formed using a cleaving method and a polishing method. In this way, the fabrication of the optical detector device is completed.

Abstract translation: 目的：提供一种使用GaAs板的聚合物波导光栅波长分割光学器件及其制造方法，以提高器件的性能，并实现与其他有源器件的集成。 构成：在n-GaAs上形成n-GaAs下包层（2），i-InGaAs吸收层（3），p-GaAs上覆层（4）和p-InGaAs层（5） 使用用于形成光学检测器装置的半导体薄膜沉积设备的衬底。 使用光学蚀刻方法对光学检测器件的波导进行构图。 使用聚酰亚胺涂覆图案周围的区域，从而限制光学检测器装置的电性能。 在该光学检测器件上形成一个欧姆金属层，在该光学检测器件下方形成一个n-欧姆金属层（8）。 在整个GaAs衬底上沉积SiNx薄膜。 使用旋涂法连续形成聚合物光波导下包层（9），聚合物光波导芯层（10）和聚合物光波导上包层（12）。 使用BOE蚀刻溶液除去沉积在光学检测器件和SiNx薄膜上的聚合物材料。 使用切割方法和抛光方法形成光波的输入和输出的横截面。 以这种方式，完成了光学检测器装置的制造。

公开(公告)号：KR100204061B1

公开(公告)日：1999-06-15

申请号：KR1019960069770

申请日：1996-12-21

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 소운섭 ,  양성모 ,  이승환 ,  김해근 ,  김진태

IPC: H04L12/56

CPC classification number: H04L49/3081 ,  H04L43/50 ,  H04L2012/5625 ,  H04L2012/5628 ,  H04Q11/0478

Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
에이티엠(ATM) 교환시스템에서의 시험기능을 구비한 가입자 제어 모듈.
2. 발명이 해결하려고 하는 기술적 과제
종래의 문제점인 여러 가지 속도의 가입자에 대해서 시험하고자 하는 가입자 수만큼 시험장치 모듈이 필요하고, 교환시스템 외부에서 접속되므로 시스템 내부의 유지보수 제어 모듈에서 제어하여 교환기의 내부 경로를 시험할 수 없는 문제점을 해결하고자 함.
3. 발명의 해결방법의 요지
ATM 교환시스템에서 가입자 제어 모듈별로 하나의 시험장치를 두고서 다양한 속도의 ATM 가입자를 시험할 수 있고, 교환시스템 내에 장착할 수 있도록 교환기에 사용되는 보드와 동일한 형상으로 구성되고, 가입자 스위치망과 연결 스위치망을 통하여 시스템 내부의 유지보수 제어 모듈에서 제어하여 교환기 내부의 전체 경로를 시험할 수 있도록 구성함.
4. 발명의 중요한 용도
ATM 교환시스템의 가입자 제어 모듈에 이용됨.

公开(公告)号：KR1019980050922A

公开(公告)日：1998-09-15

申请号：KR1019960069770

申请日：1996-12-21

Applicant: 한국전자통신연구원 ,  주식회사 케이티

Inventor： 소운섭 ,  양성모 ,  이승환 ,  김해근 ,  김진태

IPC: H04L12/56

Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
에이티엠(ATM) 교환시스템에서의 시험기능을 구비한 가입자 제어모듈.
2. 발명이 해결하려고 하는 기술적 과제
종래의 문제점인 여러가지 속도의 가입자에 대해서 시험하고자 하는 가입자 수만큼 시험장치 모듈이 필요하고, 교환시스템 외부에서 접속되므로 시스템 내부의 유지보수 제어 모듈에서 제어하여 교환기의 내부 경로를 시험할 수 없는 문제점을 해결하고자 함.
3. 발명의 해결방법의 요지
ATM 교환시스템에서 가입자 제어 모듈별로 하나의 시험장치를 두고서 다양한 속도의 ATM 가입자를 시험할 수 있고, 교환시스템 내에 장착할 수 있도록 교환기에 사용되는 보드와 동일한 형상으로 구성되고, 가입자 스위치망과 연결 스위치망을 통하여 시스템 내부의 유지보수 제어 모듈에서 제어하여 교환기 내부의 전체 경로를 시험할 수 있도록 구성함.
4. 발명의 중요한 용도
ATM 교환시스템의 가입자제어모듈에 이용됨.

公开(公告)号：KR100467322B1

公开(公告)日：2005-01-24

申请号：KR1020020056806

申请日：2002-09-18

Applicant: 한국전자통신연구원

Inventor： 최지연 ,  홍현하 ,  김해근 ,  이종현

IPC: H04B10/00

CPC classification number: H03K5/135 ,  H04L7/0276

Abstract: There are provided an apparatus and method for recovering a clock signal from a burst mode signal. A first delay delays an input data signal for half of a time period of the input data signal, and produces a first delay signal. An XOR gate adds the input data signal and the first delay signal provided from the first delay, and provides an inverted signal of the added signal. An OR gate adds an output signal of the XOR gate and a second delay signal, and provides the added signal as a recovered clock signal. A second delay delays the added signal provided from the OR gate for an integer multiple of a time period of the input data signal, and produces the second delay signal that is provided to the OR gate. The frequency of the recovered clock signal is not limited by any delay in the gate elements due to a phase transition of the input data signal occurring when every other packet is provided.

Abstract translation: 提供了一种用于从突发模式信号中恢复时钟信号的装置和方法。 第一延迟将输入数据信号延迟输入数据信号的一半时间周期，并产生第一延迟信号。 异或门将输入数据信号和从第一延迟提供的第一延迟信号相加，并提供相加信号的反相信号。 或门将XOR门的输出信号和第二延迟信号相加，并将相加后的信号作为恢复的时钟信号。 第二延迟将从或门提供的相加信号延迟输入数据信号的时间周期的整数倍，并产生提供给或门的第二延迟信号。 恢复的时钟信号的频率不受任何由于在提供每隔一个分组时出现的输入数据信号的相变而引起的门元件中的任何延迟的限制。

公开(公告)号：KR1020020047601A

公开(公告)日：2002-06-22

申请号：KR1020000076091

申请日：2000-12-13

Applicant: 한국전자통신연구원

Inventor： 한미경 ,  최완 ,  김해근 ,  최미선 ,  송은미 ,  정진미 ,  김영국

IPC: G06F12/16

Abstract: PURPOSE: A device and a method for the backup/recovery without processing a log on an MMDB(Main-Memory DataBase system) are provided to improve the performance of the entire system by directly copying a page to be updated to a shadow area of a main memory, editing the updated page and finally carrying out the backup for the updated page from the stable storage to a backup disk. CONSTITUTION: A data processor(21) carries out a transaction by using a shadow paging technique and performs the first backup transferring the pages changed by the present transaction to a backup buffer of the stable storage(24) from the shadow area according to the transaction result. A recovery processor(22) performs the second backup transferring the first backup pages to the backup disk(25) and recovers the pages listed up to a backup list by loading to the MMDB area when a system error is occurred. A main storage(23) stores the information for the MMDB area storing an original data of the database and the shadow area storing the contents changed by the present transaction. The stable storage stores the transaction pages processed by the data processor and the backup data to be transferred to the backup disk.

Abstract translation: 目的：提供用于备份/恢复的设备和方法，而不处理MMDB（主内存数据库系统）上的日志，以通过将要更新的页面直接复制到一个阴影区域来提高整个系统的性能 主存储器，编辑更新的页面，并最终将更新页面的备份从稳定存储器执行到备份磁盘。 构成：数据处理器（21）通过使用影子寻呼技术执行交易，并且根据交易执行第一次备份，以从阴影区域将当前事务改变的页面传送到稳定存储器（24）的备份缓冲器 结果。 恢复处理器（22）执行第二备份，将第一备份页面传送到备份盘（25），并且当发生系统错误时通过加载到MMDB区域来恢复直到备份列表列出的页面。 主存储器（23）存储存储数据库的原始数据的MMDB区域的信息和存储由本次交易改变的内容的阴影区域。 稳定存储将数据处理器处理的事务页面和要传输到备份磁盘的备份数据进行存储。