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公开(公告)号：KR1020150084615A
公开(公告)日：2015-07-22
申请号：KR1020140004797
申请日：2014-01-14
CPC classification number: Y02B70/1491
Abstract: 본발명의다양한실시예들에따르면, 능동정류기에있어서, 전력수신기로부터입력전압에따라스위칭동작을수행하며크로스커플드(Cross Coupled) 구조로연결된제1 내지제4 MOSFET과, 상기제3 MOSFET 및상기제4 MOSFET 각각이제로전압스위칭(ZVC) 또는제로전류스위칭(ZCS)을수행하도록제어하는 ZVS&ZCS 제어기를포함할수 있다. 이외에도다양한실시예들이가능할수 있다.
Abstract translation: 根据本发明的各种实施例，有源整流器可以包括：第一至第四MOSFET，其根据来自功率接收器的输入电压执行开关操作并且以交叉耦合结构连接; 以及ZVS＆ZCS控制器，其控制第三MOSFET和第四MOSFET中的每一个来执行零电压切换（ZVC）或零电流切换（ZCS）。 除此之外，各种实施例也是可能的。 有源整流器具有相对高的输入电压和较高的工作频率。
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公开(公告)号：KR100411734B1
公开(公告)日：2003-12-18
申请号：KR1020010006738
申请日：2001-02-12
Applicant: 한국과학기술원
IPC: H04L12/42
Abstract: PURPOSE: A bidirectional WDM(Wavelength Division Multiplex) add/drop self-recovery ring-shaped metro network is provided to perform self-recovery using only one optical fiber without a specific optical switch on a transmission line when a WDM optical signal is bidirectionally transmitted in a CO(Central Office) and each RN(Remote Node) and the fault of a system is generated. CONSTITUTION: One CO and a plurality of RNs(RN1-RN3) are composed in the bidirectional WDM add/drop self-recovery ring-shaped metro network. Nodes are connected by a ring-shaped type through one optical fiber(1) for bidirectionally transmitting and receiving an optical signal. Each RN(RN1-RN3) is embodied as a BADM(Bidirectional Add/Drop Multiplexer) so that a specific wavelength signal is dropped and added in each RN(RN1-RN3).
Abstract translation: 目的：提供双向WDM（波分复用）分插自恢复环形城域网络，当WDM光信号双向传输时，在传输线路上仅使用一根光纤而不需要特定的光开关来执行自恢复 在CO（中心局）和每个RN（远程节点）中，并且生成系统故障。 组成：一个CO和多个RN（RN1-RN3）由双向WDM分插自恢复环形城域网组成。 节点通过一个光纤（1）通过环形类型连接，用于双向传输和接收光信号。 每个RN（RN1-RN3）被实现为BADM（双向分插复用器），使得特定波长信号被分出并被添加到每个RN（RN1-RN3）中。
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公开(公告)号：KR1020020042395A
公开(公告)日：2002-06-05
申请号：KR1020010030881
申请日：2001-06-01
Applicant: 한국과학기술원
IPC: H04B10/03 , H04B10/275 , H04B10/2581
CPC classification number: H04J14/0291 , H04J14/0202 , H04J14/0283
Abstract: PURPOSE: A bi-directional WDM(Wavelength Division Multiplexing) self-curable annular network composed of an add optical fiber and a drop optical fiber is provided to maintain a signaling path like a normal state, without the necessity of using an optical switch and an optical fiber for protection, in the event of system failure and to exclude the use of an optical amplifier. CONSTITUTION: The optical signals bi-directionally transmitted from a central node(C0) are modulated into different data respectively through two optical modulators. The two modulated optical signals respectively are connected with two terminals of a 2 x 2 optical switch(SW2). The other two terminals of the 2 x 2 optical switch(SW2) respectively are connected with the input terminals of two MUXs. The 2 x 2 optical switch(SW2) settles the path of each optical signal so that a wavelength signal modulated into priority information can move counterclockwise in a normal state. Accordingly, an optical signal modulated into priority information proceeds along with a drop optical fiber(12) counterclockwise, and the other optical signal proceeds clockwise.
Abstract translation: 目的：提供由添加光纤和分支光纤组成的双向WDM（波分复用）自固化环形网络，以维持像正常状态的信令路径，而不需要使用光开关和 光纤保护，发生系统故障并排除使用光放大器。 构成：从中央节点（C0）双向传输的光信号分别通过两个光调制器调制成不同的数据。 两个调制光信号分别与2×2光开关（SW2）的两个端子连接。 2 x 2光开关（SW2）的另外两个端子分别与两个MUX的输入端相连。 2×2光开关（SW2）稳定每个光信号的路径，使得调制成优先级信息的波长信号可以在正常状态下逆时针移动。 因此，被调制成优先级信息的光信号与滴落光纤（12）逆时针一起进行，另一个光信号顺时针进行。
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公开(公告)号：KR100429042B1
公开(公告)日：2004-04-28
申请号：KR1020010030881
申请日：2001-06-01
Applicant: 한국과학기술원
IPC: H04B10/03 , H04B10/275 , H04B10/2581
Abstract: PURPOSE: A bi-directional WDM(Wavelength Division Multiplexing) self-curable annular network composed of an add optical fiber and a drop optical fiber is provided to maintain a signaling path like a normal state, without the necessity of using an optical switch and an optical fiber for protection, in the event of system failure and to exclude the use of an optical amplifier. CONSTITUTION: The optical signals bi-directionally transmitted from a central node(C0) are modulated into different data respectively through two optical modulators. The two modulated optical signals respectively are connected with two terminals of a 2 x 2 optical switch(SW2). The other two terminals of the 2 x 2 optical switch(SW2) respectively are connected with the input terminals of two MUXs. The 2 x 2 optical switch(SW2) settles the path of each optical signal so that a wavelength signal modulated into priority information can move counterclockwise in a normal state. Accordingly, an optical signal modulated into priority information proceeds along with a drop optical fiber(12) counterclockwise, and the other optical signal proceeds clockwise.
Abstract translation: 目的：提供由增加光纤和引入光纤构成的双向WDM（波分复用）自固化环形网络，以保持类似正常状态的信令路径，而不需要使用光开关和 光纤用于保护系统发生故障并排除使用光放大器。 构成：从中央节点（C0）双向传输的光信号分别通过两个光调制器被调制成不同的数据。 两个调制光信号分别与2×2光开关（SW2）的两个端子连接。 2×2光开关（SW2）的另外两个端子分别与两个MUX的输入端连接。 2×2光开关（SW2）确定每个光信号的路径，使得调制成优先级信息的波长信号可以在正常状态下逆时针移动。 因此，被调制成优先级信息的光信号逆时针与分出光纤（12）一起进行，而另一个光信号顺时针进行。
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公开(公告)号：KR1020020027061A
公开(公告)日：2002-04-13
申请号：KR1020000058299
申请日：2000-10-04
Applicant: 한국과학기술원
IPC: H04B10/2581 , H04B10/516
CPC classification number: H04J14/0224 , H04B10/2941 , H04B10/675
Abstract: PURPOSE: A metro WDM(Wavelength Division Multiplexing) system having a direct modulation type by an optical filtering method is provided to effectively control a color distribution effect by chirping generated in a direct modulation system, a penalty by an optical extinction ratio, and a nonlinear effect generated in multi-channel transmission, so that a transmission distance can be extended. CONSTITUTION: An LD(Laser Diode,10) mounted on a transmission unit, is directly modulated through a laser operator to change a carrier of a laser. A first AWG(Arrayed-Waveguide Grating,20) multiplexes and optically filters wavelength divided signals. A first booster amplifier(30) outputs and amplifies the optical signals generated from the first AWG(20). A first SMF(Single Mode Fiber,40) transmits the optical amplifying signals outputted from the first booster amplifier(30) through an optical fiber. An in-line amplifier(50) re-amplifies the optical amplifying signals through an in-line. A second SMF(60) transmits the re-amplified optical signals through the optical fiber to a receiving unit. A second AWG(70) de-multiplexes and optically filters the optical signals multiplexed in the transmission unit. And an optical receiver(80) receives the optical signals generated from the second AWG(70).
Abstract translation: 目的：提供一种通过光学滤波方法具有直接调制方式的城域WDM（波分复用）系统，以通过在直接调制系统中产生的线性调频，光消光比的惩罚以及非线性 在多通道传输中产生的效果，从而可以延长传输距离。 构成：安装在传输单元上的LD（激光二极管10）通过激光操作器直接调制以改变激光器的载体。 第一AWG（阵列波导光栅，20）复用并光学滤波波长分割信号。 第一升压放大器（30）输出并放大从第一AWG（20）产生的光信号。 第一SMF（单模光纤，40）通过光纤传输从第一升压放大器（30）输出的光放大信号。 在线放大器（50）通过直列式重放放大信号。 第二SMF（60）通过光纤将再放大的光信号发送到接收单元。 第二AWG（70）对在传输单元中复用的光信号进行解复用和光学滤波。 并且光接收器（80）接收从第二AWG（70）产生的光信号。
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Patent Agency Ranking
公开(公告)号：KR100330411B1
公开(公告)日：2002-03-27
申请号：KR1020000005652
申请日：2000-02-07
Applicant: 한국과학기술원
IPC: H04B10/2581
Abstract: 최근에 연구되고 있는 파장분할다중 전송방식 광통신망에서는 각 노드마다 애드/드롭 다중화기를 가지고 신호를 애드하거나, 드롭하는 기능을 가져야 한다.
종래의 단방향 애드/드롭 다중화기는 같은 방향의 신호만을 애드/드롭할 수 있기 때문에, 광통신망에서 양방향으로 신호를 전송하기 위해서는 노드마다 2 개의 애드/드롭 다중화기가 필요하였다.
본 발명에서 제안한 애드/드롭 다중화기는 하나의 N x N 도파관열 격자 다중화기를 이용하여 역다중화와 다중화를 동시에 구현한다. 그리고, 별도의 대역통과 필터를 사용하지 않고 신호의 파장을 교대로 할당하여 다중화기의 투과 특성을 통해 상대강도 잡음을 효과적으로 제거한다. 또한, 제안된 다중화기는 향후 신호의 용량이 증가할 경우, 이를 고가의 N x N 다중화기의 교체 없이 저가의 다중화기와 역다중화기의 추가만으로 수용할 수 있다. 이와 같은 양방향 애드/드롭 다중화기와 광증폭기를 조합하여 양방향 애드/드롭 광증폭기 모듈을 구현한다. 본 발명에 따른 양방향 파장분할다중 애드/드롭 광증폭기 모듈은 효율적이고 경제적이며, 양방향 파장다중방식 광통신망을 제작하는 데 적합하다는 장점을 가진다.-
公开(公告)号：KR100342429B1
公开(公告)日：2002-07-03
申请号：KR1020000058299
申请日：2000-10-04
Applicant: 한국과학기술원
IPC: H04B10/2581 , H04B10/516
Abstract: 본 발명은 광 필터링 방법에 의한 직접변조 방식의 메트로 파장분할 다중방식 시스템에 관한 것이다.
종래의 직접 변조 방식은 변조시 레이저 다이오드에서 발생하는 처핑에 의한 색분산 효과와 광 소광비가 좋지 못하므로 전송에 제한을 받게 된다.
이에, 본 발명은 메트로용 광 네트워크에 직접 변조 방식을 채택하기 위해 광 필터링 방법을 이용하여 1) 직접 변조 과정에서 발생하는 처핑을 효과적으로 제거하여 색분산에 의한 페널티를 줄인다. 2) 광소비를 향상시키기 위해 off 준위의 광 신호에너지도 함께 제거하여 광소광비에 의한 페널티를 줄인다. 3) 또한, 높은 파워의 광신호를 파장분할 다중화 시켜 송신할 경우 발생하는 상호위상 변조와 4광파 혼합과 같은 비선형 효과를 효과적으로 억제한다.
따라서, 본 발명에서 제안한 광 필터링 방법을 사용하면 광 소광비를 향상시키고, 처핑에 의한 색분산 효과와 비선형 효과를 효과적으로 제거하여 경제적인 직접변조 송신방식으로도 양질의 신호를 전송할 수 있다.-
公开(公告)号：KR1020010089057A
公开(公告)日：2001-09-29
申请号：KR1020000014323
申请日：2000-03-21
Applicant: 한국과학기술원
IPC: G01N25/00
CPC classification number: G01N25/18
Abstract: PURPOSE: An apparatus for measuring thermal conductivity of a liquid state and a gas state is provided to improve the accuracy of measurement of liquid state and gas state samples having a characteristic that a measurement error increases due to convection phenomenon when high heat capacity is applied in the measurement. CONSTITUTION: An apparatus for measuring thermal conductivity of a liquid state and a gas state includes a Wheatstone bridge circuit formed with a first resistance(R1) and a parallel cell opposite to each other, and a second resistance(R2) and a variable resistance(Rv) opposite to each other; a DMM1 and 2(20,30) connected crossedly to detect potential difference between opposite points of the Wheatstone bridge circuit; and a PC(40) receiving signals from the DMM1 and 2 for obtaining thermal conductivity by an algorism of λ=q/4πm.
Abstract translation: 目的：提供一种用于测量液体状态和气体状态的热导率的装置，以提高液态的测量精度和气态状态样品，其具有当施加高热容时由于对流现象引起的测量误差增加的特性 测量。 构成：用于测量液体状态和气体状态的导热性的装置包括形成有彼此相对的第一电阻（R1）和平行电池的惠斯登电桥电路，以及第二电阻（R2）和可变电阻（ Rv）彼此相对; DMM1和2（20,30）交叉连接，以检测惠斯通电桥电路的相对点之间的电位差; 以及PC（40），其通过λ= q /4πm的算法从DMM1和2接收信号以获得热导率。
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公开(公告)号：KR1020010077690A
公开(公告)日：2001-08-20
申请号：KR1020000005652
申请日：2000-02-07
Applicant: 한국과학기술원
IPC: H04B10/2581
CPC classification number: H04J14/0204 , H04B10/2914 , H04B10/294 , H04J14/0205 , H04J14/0209
Abstract: PURPOSE: A wavelength alternating type bi-directional optical add/drop amplifier module using an arrayed waveguide grating multiplexer is provided to offer a simple structured bi-directional optical add/drop amplifier by using an optical fiber for communication, an optical fiber for protection and a single N x N multiplexer. CONSTITUTION: A bi-directional optical add/drop amplifier module consists of a single N x N arrayed waveguide grating multiplexer(101) and two optical rotating devices(102,103). The single N x N arrayed waveguide grating multiplexer(101) is connected in the form of fold-back type to perform the multiplexing and the demultiplexing of wavelength division multiplexed signals simultaneously. The optical rotating devices(102,103) separate a bi-directional signals from each other, demultiplex the separated signals and combine the demultiplexed bi-directional signals.
Abstract translation: 目的：提供使用阵列波导光栅复用器的波长交替型双向光分插放大器模块，通过使用光纤进行通信，保护光纤和保护光纤提供简单的结构双向光分插放大器， 单个N×N多路复用器。 构成：双向光分插放大器模块由单个N×N阵列波导光栅多路复用器（101）和两个旋转旋转装置（102,103）组成。 单个N×N阵列波导光栅多路复用器（101）以折叠式形式连接，以同时执行波分复用信号的复用和解复用。 光学旋转设备（102,103）将双向信号彼此分离，对分离的信号进行解复用并组合解复用的双向信号。
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