公开(公告)号：KR1020080082828A

公开(公告)日：2008-09-12

申请号：KR1020070023629

申请日：2007-03-09

Applicant: 한국전자통신연구원

Inventor： 김병휘 ,  김대웅 ,  강병용

IPC: H04B10/50 ,  H04B10/2581 ,  H04B10/25

CPC classification number: H01S5/50 ,  H01S5/06812 ,  H04J14/02 ,  H04J14/0282

Abstract: A downstream optical transmission device using a wavelength non-dependent light source in a WDM(Wavelength Division Multiplexing) PON(Passive Optical Network), a method thereof, and an OLT(Optical Line Terminal) system using the device are provided to use a separate multi-wavelength light source or a broadband light source, and to use an optical transmitter corresponding to the wavelength non-dependent light source, thereby efficiently performing management and maintenance of the OLT system. A protocol processor(101) processes an upstream electric signal transmitted from a subscriber side or a downstream electric signal to be transmitted to the subscriber side. Optical transmitters(204) use 'wavelength non-dependent semiconductor optical amplifiers'. A wavelength multiplexer/demultiplexer(203) operates as a 'wavelength demultiplexer' corresponding to a 'wavelength splitter' for multi-wavelength optical signals inputted through an optical circulator(202) by being outputted from a multi-wavelength light source(201), and operates as a 'wavelength multiplexer' for optical signals inputted from the optical transmitters.

Abstract translation: 提供了在WDM（波分复用）​​PON（无源光网络）中使用波长非依赖光源的下行光传输装置，其方法和使用该装置的OLT（光线路终端）系统，以使用单独的 多波长光源或宽带光源，并且使用与波长非依赖光源相对应的光发射机，从而有效地执行OLT系统的管理和维护。 协议处理器（101）处理从用户侧发送的上行电信号或将要发送给用户侧的下行电信号。 光发射机（204）使用“波长非依赖半导体光放大器”。 波长多路复用器/解复用器（203）通过从多波长光源（201）输出，通过光环行器（202）输入的多波长光信号与“波长分离器”对应的“波分解多路复用器” 并作为从光发射机输入的光信号的“波长多路复用器”。

公开(公告)号：KR1020080053117A

公开(公告)日：2008-06-12

申请号：KR1020060125108

申请日：2006-12-08

Applicant: 한국전자통신연구원 ,  국민대학교산학협력단

Inventor： 김병휘 ,  박영일

IPC: H04B10/2581 ,  H04B10/40 ,  H04B10/00

CPC classification number: H04J14/0227 ,  H04J14/0226 ,  H04J14/0238 ,  H04J14/0249 ,  H04J14/0282

Abstract: A wavelength conversion apparatus in a TDM-PON system based on WDM(Wavelength Division Multiplexing) and an optical transmission apparatus and method using the same are provided to enable each subscriber group to have each instinct wavelength and transmit data to an OLT using an optical fiber, thereby improving the bandwidth efficiency of each subscriber and saving a transmission cost. An OLT(Optical Line Terminal) is positioned at a CO(Central Office). The OLT has an instinct wavelength and transceives data to each subscriber group. The OLT transmits data to plural subscribers using a transmitting terminal. ONUs(Optical Network Units) transmit the uplink data using the wavelength of 1310nm bandwidth used in an existing TDM-PON(Time Division Multiplexing-Passive Optical Network). An RN(Remote Node) routes ONU uplink signals to a wavelength conversion apparatus pre-assigned by subscriber group, converts the ONU uplink signals into signals in wavelength assigned in the wavelength conversion apparatus, and transmits the converted signals to the OLT.

Abstract translation: 提供了基于WDM（波分复用）​​的TDM-PON系统中的波长转换装置以及使用该波长转换装置的光传输装置和方法，以使每个用户组具有每个本能波长，并使用光纤向OLT发送数据 从而提高每个用户的带宽效率并节省传输成本。 OLT（光线路终端）位于CO（中心局）。 OLT具有本能波长并将数据收发到每个用户组。 OLT使用发送终端向多个订户发送数据。 ONU（光网络单元）使用现有TDM-PON（时分复用无源光网络）中使用的1310nm带宽的波长发送上行数据。 RN（远程节点）将ONU上行链路信号发送到由用户组预分配的波长转换装置，将ONU上行链路信号转换为在波长转换装置中分配的波长信号，并将转换的信号发送到OLT。

公开(公告)号：KR100785854B1

公开(公告)日：2007-12-14

申请号：KR1020060124767

申请日：2006-12-08

Applicant: 한국전자통신연구원 ,  한국정보통신대학교 산학협력단

Inventor： 유정주 ,  김병휘 ,  김태화 ,  박홍식 ,  김영민 ,  류미선

IPC: H04B10/03 ,  H04B10/032 ,  H04L12/24 ,  H04B10/25

CPC classification number: H04Q11/0067 ,  H04Q2011/0081

Abstract: A protection recovery architecture design method of a passive optical network and a device thereof are provided to first duplicate a sub optical element having high priority by applying redundancy rules to each of separated sub optical elements, thereby designing economical protection recovery architecture having high survivability. Network availability rules are applied to each sub optical element(S200). Duplication values for reliability on each sub optical element are obtained(S210). Duplication values for duplication cost of each sub optical element are obtained(S220). Values(S230) for adding up all of the obtained duplication values are compared with a duplication threshold value(S240), to determine whether each sub optical element is duplicated(S250).

Abstract translation: 提供了一种无源光网络的保护恢复架构设计方法及其装置，以通过对每个分离的子光学元件应用冗余规则来首先复制具有高优先级的子光学元件，由此设计具有高生存性的经济的保护恢复架构。 网络可用性规则被应用于每个子光学元件（S200）。 获得每个子光学元件的可靠性的重复值（S210）。 获得每个副光学元件的复制成本的重复值（S220）。 将所有获得的复制值相加的值（S230）与复制阈值（S240）进行比较，以确定是否复制每个子光学元件（S250）。

公开(公告)号：KR1020070112696A

公开(公告)日：2007-11-27

申请号：KR1020060122658

申请日：2006-12-05

Applicant: 한국전자통신연구원

Inventor： 김병휘 ,  박만용 ,  조승현 ,  이우람 ,  박권철 ,  강병용 ,  박경준 ,  김태완 ,  조무희 ,  정연수

IPC: G02B6/42 ,  H04B10/25 ,  H04B10/00

Abstract: A PLC package using a metal-coated optical fiber and a method of packaging the PLC are provided to maintain a constant operation characteristic of the PLC by fixing a metal-coated portion of the optical fiber on an optical fiber fixing structure. A PLC(Planar Lightwave Circuit) package includes a PLC(120), an optical fiber(180) and an optical fiber fixing structure(140). The PLC is coupled with an optical element case. The optical fiber is connected to the PLC. A predetermined portion of the optical fiber is coated using a metal. The optical fiber fixing structure is coupled with the optical element case and fixes the metal-coated portion of the optical fiber. A V-groove is formed on the PLC. The optical fiber is connected to the V-groove by using a UV(Ultra-Violet) ray or a thermosetting epoxy.

Abstract translation: 提供使用金属涂覆光纤的PLC封装和封装PLC的方法，以通过将光纤的金属涂覆部分固定在光纤固定结构上来保持PLC的恒定操作特性。 PLC（平面光波电路）封装包括PLC（120），光纤（180）和光纤固定结构（140）。 PLC与光学元件壳体耦合。 光纤连接到PLC。 使用金属涂覆光纤的预定部分。 光纤固定结构与光学元件壳体耦合，固定光纤的金属涂覆部分。 在PLC上形成V形槽。 光纤通过使用UV（Ultra-Violet）或热固性环氧树脂连接到V形槽。

公开(公告)号：KR1020070109768A

公开(公告)日：2007-11-15

申请号：KR1020060096418

申请日：2006-09-29

Applicant: 한국전자통신연구원

Inventor： 김병휘 ,  박만용 ,  조승현 ,  이우람

IPC: H04B10/2581 ,  H04B10/291

CPC classification number: H04B10/272 ,  H04B10/2587 ,  H04J14/02 ,  H04J14/0282 ,  H04Q11/0067 ,  H04Q2011/0064

Abstract: A passive optical subscriber network based on reflective semiconductor optical amplifier is provided to solve a problem about managing the wave length of downlink optical source for modulating downlink signals of OLT(Optical Line Terminal) as well as ONT(Optical Network Terminal) in a WDM(Wavelength Division Multiplexing)-PON(Passive Optical Network) structure, thereby effectively operating and installing a network of a provider. A passive optical subscriber network based on reflective semiconductor optical amplifier includes an optical line terminal, an optical network terminal, a remote node, and a passive optical network based on an optimized RSOA(Reflective Semiconductor Optical Amplifier). The optical line terminal(110) includes seed light injected ROSAs(151) which are used as optical sources for downlink transmission and a first receiver for receiving uplink signals. The optical network terminal(150) includes ROSAs for transmitting uplink signals using the downlink signals and a second receiver for receiving the downlink signals.

Abstract translation: 提供了一种基于反射半导体光放大器的无源光用户网络，用于解决管理用于调制OLT（光线路终端）以及WDM中的ONT（Optical Network Terminal，光网络终端）的下行链路信号的下行光源的波长的问题， 波分复用）​​-PON（被动光网络）结构，从而有效地操作和安装提供商的网络。 基于反射半导体光放大器的无源光用户网络包括基于优化的RSOA（反射半导体光放大器）的光线路终端，光网络终端，远端节点和无源光网络。 光线路终端（110）包括被用作下行链路传输的光源的种子光注入的ROSA（151）和用于接收上行链路信号的第一接收机。 光网络终端（150）包括用于使用下行链路信号发送上行链路信号的ROSA和用于接收下行链路信号的第二接收机。

公开(公告)号：KR100759943B1

公开(公告)日：2007-09-18

申请号：KR1020060085888

申请日：2006-09-06

Applicant: 한국전자통신연구원 ,  한국정보통신대학교 산학협력단

Inventor： 유정주 ,  김병휘 ,  김영민 ,  류미선 ,  김태화 ,  박홍식

IPC: H04B10/03 ,  H04L12/24 ,  H04B10/07 ,  H04B10/40

Abstract: 본 발명은 수동형 광 가입자 망(PON:Passive Optical Network)에서, 가변 파장 송수신기(Tunable Transceiver)를 이용하여 광 선로 종단 장치(OLT)의 고정 파장 송수신기(Fixed Transceiver)를 보호하는 장치 및 방법에 관한 것으로, 고정 파장 광신호를 출력하는 N개의 광송수신기를 포함하는 중앙기지국의 OLT, 상기 각 고정 파장 광신호를 수신하는 복수개의 광송수신기를 포함하는 가입자단의 ONU를 포함하는 수동형 광 가입자망에서, 상기 광송수신기 출력 광신호의 장애 현상을 감지하는 상태 검출 회로부; 및 복수개의 서로 다른 파장 광신호를 출력하는 가변 파장 광송수신기;를 포함하여 이루어지고 상기 상태 검출 회로부에서 감지된 장애 현상을 발생시킨 광송수신기가 출력하는 파장 광신호를 상기 가변 파장 광송수신기에서 추출하여 상기 수동형 광 가입자망의 장애를 복구하는 것을 특징으로 한다. 기존의 방법에 비해 상당히 경제적이면서, 기존의 방법과 비슷한 성능을 보이는 보호복구 구조 및 방법을 제공한다. 또한 본 발명은, 파장별 우선순위를 다르게 부여하여 높은 우선순위의 파장을 먼저 보호함으로, 파장별 차별화된 보호복구 서비스를 가능케 한다.
수동형 광 가입자망(PON), 가변 파장 송수신기, 고정 파장 송수신기

公开(公告)号：KR100745670B1

公开(公告)日：2007-08-02

申请号：KR1020040102607

申请日：2004-12-07

Applicant: 한국전자통신연구원

Inventor： 이철수 ,  장승현 ,  정의석 ,  김병휘

IPC: H04L12/28

CPC classification number: H04J14/0298 ,  H04B10/40 ,  H04J14/0226 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282

Abstract: An optical transceiver for transmitting light source control information, which is applied to a Subcarrier Multiplexing optical network, is disclosed. The optical transceiver includes a controller, an SCM frame generation/restoring unit, a modulator/demodulator, and an EO/OE converter. The controller controls transmission of light source control information or collects received light source control information. The SCM frame generation/restoring unit generates an SCM frame containing light source control information received from the controller. The modulator/demodulator modulates an SCM frame generated by the SCM frame generation/restoring unit into a signal suitable for transmission. The EO/OE converter converts a transmission signal modulated by the modulator/demodulator into an optical signal and transmits the optical signal through an optical fiber. An optical network having a telephone office OLT and subscriber ONTs, each having the optical transceiver, is also disclosed.

公开(公告)号：KR100744564B1

公开(公告)日：2007-08-01

申请号：KR1020060080611

申请日：2006-08-24

Applicant: 한국전자통신연구원

Inventor： 이철수 ,  정의석 ,  김병휘 ,  장승현

IPC: H04B10/50 ,  H04B10/60 ,  H04B10/2581

Abstract: 본 발명은 광 가입자망에 적용할 수 있는 WDM(Wavelength Division Multiplexing)기반의 SCM(Sub-Carrier Multiplexing)-PON(Passive Optical Network)망에 사용하기 위한 기저대역(Baseband) 송수신기에 관한 것이다. 본 발명의 기저대역 송수신기는 가입자의 데이터를 기저대역 신호로 변환하기 위한 디지털 변조 및 복조 블록을 포함하며, 광 채널을 통해 기저 대역 수신기에 전송된 기저 대역 신호로부터 디지털 데이터를 복원하기 위한 수신 동기부 및 디지털 필터 블록, 채널 상에서 발생한 에러를 복원하기 위한 에러 정정 장치 등을 포함하는것을 특징으로 한다. 본 발명을 구성함으로 서비스 제공자는 WDM/SCM-PON 광 가입자망에서 각 가입자에게 고속으로 양질의 데이터 서비스를 제공할 수 있다.
WDM/SCM-PON, FTTH, 디지털 변조, 디지털 복조, 디지털 동기.

公开(公告)号：KR1020070059910A

公开(公告)日：2007-06-12

申请号：KR1020060080611

申请日：2006-08-24

Applicant: 한국전자통신연구원

Inventor： 이철수 ,  정의석 ,  김병휘 ,  장승현

IPC: H04B10/50 ,  H04B10/60 ,  H04B10/2581

Abstract: A baseband transceiver in a WDM/SCM(Wavelength Division Multiplexing Sub-Carrier Multiplexing)-PON(Passive Optical Network) is provided to offer a high-speed data service of more than 100 Mbps to each ONT(Optical Network Terminal), to simply implement the structure of an analog transceiver by executing digital modulation and demodulation, and to secure the SNR gain of an optical Tx/Rx channel by restoring bit errors of a transmission line through an error correction encoder. A baseband transmitter in a WDM/SCM-PON consists of an error correction encoding part(402), a scrambling part(403), a digital modulation part(404), a preamble insertion part(405), a transmission filter(406), and a digital/analog conversion part(407). The error correction encoding part(402) receives data, recombines or encodes the data, and adds a certain error correction bit to the data. The scrambling part(403) scrambles output data of the error correction encoding part(402). The digital modulation part(404) converts the scrambled data into modulated symbol data based on a certain modulation scheme. The preamble insertion part(405) adds a preamble to the preamble-added modulated symbol data. The transmission filter(406) cancels interference between the modulated symbol data. The digital/analog conversion part(407) converts the interference-cancelled modulated symbol data into an analog signal and creates a baseband signal.

Abstract translation: 提供WDM / SCM（波分复用子载波复用）-PON（无源光网络）中的基带收发器，以向每个ONT（光网络终端）提供超过100Mbps的高速数据服务，简单地 通过执行数字调制和解调来实现模拟收发器的结构，并且通过通过纠错编码器恢复传输线的位错误来确保光学Tx / Rx通道的SNR增益。 WDM / SCM-PON中的基带发射机包括纠错编码部分（402），加扰部分（403），数字调制部分（404），前同步码插入部分（405），发射滤波器（406） ，和数字/模拟转换部分（407）。 纠错编码部分（402）接收数据，重新组合或编码数据，并向数据添加一定的纠错位。 加扰部分（403）加扰纠错编码部分（402）的输出数据。 数字调制部（404）根据特定的调制方式将加扰后的数据变换为调制符号数据。 前导码插入部分（405）将前置码添加调制码元数据相加。 发送滤波器（406）消除已调码元数据之间的干扰。 数字/模拟转换部分（407）将干扰消除的调制符号数据转换成模拟信号并产生基带信号。

公开(公告)号：KR1020070059906A

公开(公告)日：2007-06-12

申请号：KR1020060078104

申请日：2006-08-18

Applicant: 한국전자통신연구원

Inventor： 조승현 ,  김병휘

IPC: G02B6/42

Abstract: An optical transceiver device is provided to utilize a flat-plate type optical element that is sensitive to electromagnetic interference less than an existing optical element packaged by forming a TO-CAN type. An optical transceiver device is composed of a flat-plate type light receiving unit(12) having a flat-plate type light receiving element and converting the input light into a first electric signal; a flat-plate type light emitting unit(11) having a flat-plate type light emitting element and generating the light according to a second input electric signal; and an electric signal processing unit(13) receiving the first electric signal and extracting and outputting the data, and receiving data from the outside, converting the received data into the second electric signal, and then outputting the converted signal.

Abstract translation: 提供一种光收发器装置，以利用对通过形成TO-CAN类型封装的现有光学元件小于电磁干扰的平板型光学元件。 光收发器装置由具有平板型光接收元件的平板型光接收单元（12）构成，并将输入光转换为第一电信号; 具有平板型发光元件并根据第二输入电信号产生光的平板型发光单元（11）; 以及电信号处理单元（13），接收第一电信号并提取并输出数据，并从外部接收数据，将接收的数据转换成第二电信号，然后输出转换的信号。