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公开(公告)号：KR1020100061279A
公开(公告)日：2010-06-07
申请号：KR1020090026618
申请日：2009-03-27
Applicant: 한국전자통신연구원
IPC: H04B10/25 , H04B10/2581 , H04L7/00 , H04L5/06
CPC classification number: H04Q11/0066 , H04Q11/0067 , H04Q2213/1336
Abstract: PURPOSE: A clock phase aligner for burst-mode data is provided to effectively align a phase of a clock signal with a phase of data during an overhead period of burst mode packet data through an over-sampling scheme and a digital scheme. CONSTITUTION: An over-sampling unit(211) performs an over-sampling on burst mode data input from a burst mode optical receiver(200) in a manner to convert(1) bit of data having an L bit-rate into M-bits of data having an interval of 1/M such that high-bit signals having M phase information and M*L bit-rate are obtained. A parallel conversion unit(212) converts the high speed continuous signals into low-speed parallel signals at a ratio of 1 to N (N>M). A parallel phase alignment unit(221) arranges bit streams of low-speed parallel signals having a ratio of 1 to N within a clock period into M groups (for example, M=4). When arranging the bit streams, if an additional parallel conversion is necessary, the signals, which have been converted at a ratio of 1 to N, are converted through a 1:P parallel conversion unit serving as a supplementary parallel conversion unit to obtain parallel signals having a further lower speed of N*P. A phase determination unit(222) determines an optimum phase based on patterns of N pieces of parallel data within a clock period. The clock phase arranging apparatus is provided with a pattern look-up table having phase selection information corresponding to each data pattern. A controller(224) controls an operation timing of the phase determination unit based on a burst timing control signal(250) transmitted from an MAC(Medium Access Control)(240) or a burst monitoring signal(260) transmitted from the burst mode optical receiver such that the operation timing matches a start of a CLK lock field.
Abstract translation: 目的：提供用于突发模式数据的时钟相位对准器，以通过过采样方案和数字方案，在突发模式分组数据的开销周期期间，有效地将时钟信号的相位与数据相位对准。 构成：过采样单元（211）以突发模式光接收器（200）输入的突发模式数据执行过采样，以将（1）具有L位速率的数据位转换为M比特 的数据具有1 / M的间隔，从而获得具有M相信息和M * L比特率的高位信号。 并行转换单元（212）以1至N（N> M）的比率将高速连续信号转换成低速并行信号。 并行相位对准单元（221）在时钟周期内将比特率为1〜N的低速并行信号的比特流排列成M组（例如，M = 4）。 当布置比特流时，如果需要额外的并行转换，则以1比N转换的信号通过用作辅助并行转换单元的1:P并行转换单元进行转换，以获得并行信号 具有更低的N * P的速度。 相位确定单元（222）基于时钟周期内的N个并行数据的模式来确定最佳相位。 时钟相位布置装置设置有具有与每个数据图形对应的相位选择信息的图形查找表。 控制器（224）基于从突发模式光学（240）发送的MAC（媒体访问控制）（240）或突发监控信号（260）发送的突发定时控制信号（250）来控制相位确定单元的操作定时 接收器，使得操作时序与CLK锁定字段的开始相匹配。
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公开(公告)号：KR1020090059018A
公开(公告)日：2009-06-10
申请号：KR1020080025864
申请日：2008-03-20
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04J14/00
CPC classification number: H04Q11/0067 , H04J14/08 , H04Q2011/0009 , H04Q2213/13295
Abstract: An apparatus for optical filtering and an optical transmission system are provided to increase the efficiency of a subscriber network structure by accepting more many subscribers in a PON(Passive Optical Network) of a TDM(Time Domain Multiplexing) based on a wavelength split method. An optical splitter splits an optical signal outputted from an OLT(Optical Line Termination) to several ONUs(Optical Network Units) equally. A multiplication unit(430) transfers the optical signal inputted from the several ONUs to the OLT according to a wavelength split multiplexing method. A first signal split unit(410) transfers a signal inputted to the optical signal distributor and a signal outputted from the multiplexing unit to the OLT to different paths. Second signal split units(415a,415b,405c) transfers the signal outputted to the optical signal distributor to the ONUs and the signal inputted to the multiplexing unit to different paths.
Abstract translation: 提供了一种用于光学滤波和光传输系统的设备，以通过基于波长分割方法在TDM（时域多路复用）的PON（无源光网络）中接受更多的用户来增加用户网络结构的效率。 光分路器将从OLT（光线路终端）输出的光信号分成几个ONU（光网络单元）。 乘法单元（430）根据波分复用方法将从多个ONU输入的光信号传送到OLT。 第一信号分离单元（410）将输入到光信号分配器的信号和从复用单元输出的信号传送到OLT到不同的路径。 第二信号分离单元（415a，415b，405c）将输出到光信号分配器的信号传送到ONU，并将输入到复用单元的信号传送到不同的路径。
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13.发明公开급격한 턴온 특성을 갖는 레이저 다이오드, 그 레이저다이오드를 이용한 광송신 장치, 및 그 광송신 장치를포함한 광통신 장치 有权具有激光二极管的激光二极管，使用相同的激光二极管和光通信设备的光发射机设备
公开(公告)号：KR1020080010938A
公开(公告)日：2008-01-31
申请号：KR1020060071655
申请日：2006-07-28
Applicant: 한국전자통신연구원
IPC: H01S3/0941
CPC classification number: H01S5/0601 , H01S5/0602
Abstract: A laser diode having an abrupt turn-on characteristic, an optical transmitting device using the same, and an optical communication device using the same are provided to obtain enough optical output and a low power RF(Radio Frequency) operation characteristic based on a high on/off extinction ratio. A laser diode having an abrupt turn-on characteristic includes an active area(Aact), and an absorbing area(Aab). The active area generates laser light by the application of current, and controls a gain. The absorbing area absorbs the optical power generated at the laser diode in the current lower than the abrupt threshold current below the operation current which generates the target optical power required in the laser diode. The laser diode absorbs the optical power at the absorbing area by using an optical device having an absorbing function.
Abstract translation: 提供具有突然导通特性的激光二极管，使用该激光二极管的光发射装置和使用该激光二极管的光通信装置，以获得足够的光输出和基于高亮度的低功率RF（射频）操作特性 /灭绝率。 具有突然接通特性的激光二极管包括有源区（Aact）和吸收区（Aab）。 有源区域通过施加电流产生激光，并控制增益。 吸收区域以低于产生激光二极管所需的目标光功率的工作电流以下的突然阈值电流吸收在激光二极管处产生的光功率。 激光二极管通过使用具有吸收功能的光学装置吸收吸收区域的光功率。
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公开(公告)号：KR1020070096216A
公开(公告)日：2007-10-02
申请号：KR1020060025684
申请日：2006-03-21
Applicant: 한국전자통신연구원
CPC classification number: H04L25/4904 , H03M5/12 , H04B10/2587
Abstract: An optical communication system and a method using Manchester encoded signal re-modulation are provided to reduce cost of a communication network and to enhance a transmission characteristic by re-modulating a Manchester encoded downstream signal to use as an upstream signal. An optical communication system includes a transmitting unit, and a receiving unit. The transmitting unit generates and transmits a Manchester encoded optical signal(402) of a first data stream. The receiving unit divides power of the optical signal into two, and modulates one of the divided optical signals based on a second data stream to receive the transmitted optical signal and recover the added second data stream.
Abstract translation: 提供了一种使用曼彻斯特编码信号重新调制的光通信系统和方法，以降低通信网络的成本并通过重新调制曼彻斯特编码的下行信号以用作上行信号来增强传输特性。 光通信系统包括发射单元和接收单元。 发送单元生成并发送第一数据流的曼彻斯特编码的光信号（402）。 接收单元将光信号的功率分为两个，并且基于第二数据流调制分离的光信号中的一个，以接收所发送的光信号并恢复所添加的第二数据流。
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公开(公告)号：KR100628295B1
公开(公告)日：2006-09-27
申请号：KR1020030079603
申请日：2003-11-11
Applicant: 한국전자통신연구원
IPC: H04J13/10
CPC classification number: H04J14/005
Abstract: 균형-변형 유사잡음(Balanced modified PN) 행렬코드가 적용된 이차원 파장/시간 영역 광 시디엠에이 시스템에 관한 것으로, 상기 균형 코드는 한 쌍의 변형 PN 코드들의 역 배타적 논리합 연산에 의해 새로운 행렬 형태의 광 CDMA 코드로 구성된다. 제안된 코드를 광 CDMA 시스템에 적용하여 인코딩과 디코딩을 수행하는 경우, 상기 코드의 서브그룹 수(M-1) 만큼의 채널들이 연결될 때는 간섭없는(MAI-free)시스템이 되고, 서브그룹 수의 2배의 채널들이 연결될 때에도 무결점(error-free) 시스템을 구성할 수 있다. 따라서, 동시 사용 가능한 채널 수가 기존의 방식에 비해 2배 증가되어, 광 CDMA의 경제성이 높아지게 된다.
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Patent Agency Ranking
公开(公告)号：KR1020050064712A
公开(公告)日：2005-06-29
申请号：KR1020030096295
申请日：2003-12-24
Applicant: 한국전자통신연구원
IPC: H04B10/00
CPC classification number: H04B10/2581 , G02B6/14 , G02B6/2932
Abstract: 본 발명은 단일/다중 모드 변환기, 및 이를 이용한 광 부호 분할 다중 접속 시스템에 관한 것이다. 본 발명에 따른 모드 변환기는 단일 모드의 광 섬유로 형성되고, 단일 모드 광 신호를 출력하는 제1 광 도파로; 제1 광 도파로에서 출력된 단일 모드 광 신호를 다중 모드 광 신호로 변환하고, 단일 모드 광 신호의 광 파워가 다중 모드 광 신호에 균일하게 전달되도록 하는 제2 광 도파로; 및 다중 모드의 광 섬유로 형성되고, 제2 광 도파로에서 출력된 다중 모드 광 신호를 입력하여 전송하는 제3 광 도파로를 포함한다.
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公开(公告)号：KR1020030047048A
公开(公告)日：2003-06-18
申请号：KR1020010077423
申请日：2001-12-07
Applicant: 한국전자통신연구원
IPC: H04B10/50 , H04B10/516
CPC classification number: G02F1/0123 , G02F1/035 , G02F1/225
Abstract: PURPOSE: An apparatus and a method for controlling an electro-optic modulator are provided to automatically initiate a bias operation voltage and the gain of an electric signal provided to the electro-optic modulator and to operate the electro-optic modulator in the optimum condition. CONSTITUTION: An optical source(11) provides an input optical signal to be used in an electro-optic modulation to the electro-optic modulator(12). An input light measuring unit(13) measures the strength of the input optical signal outputted from the optical source(11). An output light measuring unit(14) measures the strength of an output optical signal outputted from the electro-optic modulator(12). A control unit(15) adjusts a bias voltage signal and the gain of an input electric signal according to the measured strength of the input optical signal and the output optical signal.
Abstract translation: 目的：提供一种用于控制电光调制器的装置和方法，以自动启动偏置操作电压和提供给电光调制器的电信号的增益，并在最佳状态下操作电光调制器。 构成：光源（11）提供用于对电光调制器（12）进行电光调制的输入光信号。 输入光测量单元（13）测量从光源（11）输出的输入光信号的强度。 输出光测量单元（14）测量从电光调制器（12）输出的输出光信号的强度。 控制单元（15）根据输入光信号和输出光信号的测量强度来调整偏置电压信号和输入电信号的增益。
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公开(公告)号：KR1020170023389A
公开(公告)日：2017-03-03
申请号：KR1020160105100
申请日：2016-08-18
Applicant: 한국전자통신연구원
Abstract: 본발명은레이저장치및 그를포함하는진단시스템을개시한다. 그의장치는펌프광을생성하는펌프광 소스와, 상기펌프광을흡수하여레이저광의이득을갖는이득매질과, 상기이득매질의양측들에배치되어상기레이저광을공진하는공진기를포함한다. 공진기는상기펌프광 소스와상기이득매질사이에배치된입력반사부와, 상기입력반사부에대향하는상기이득매질의출력반사부와, 상기입력반사부 또는상기출력반사부에인접하여배치되고, 상기레이저광의파장을 100nm 이상으로변화시키는파장가변부를포함한다.
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公开(公告)号：KR1020160107909A
公开(公告)日：2016-09-19
申请号：KR1020150031477
申请日：2015-03-06
Applicant: 한국전자통신연구원
IPC: H01L31/08 , G01N33/53 , H01L31/0224 , H01L31/0236 , H01L31/0232
CPC classification number: Y02E10/50 , H01L31/08 , G01N33/53 , H01L31/022466 , H01L31/0232 , H01L31/02366
Abstract: 광감지기는하부캐리어운반층; 상기하부캐리어운반층상에위치되고, 실리콘나노결정을포함하는실리콘탄화막(SiC)을포함하는광전변환층; 상기광전변환층상의상부캐리어운반층; 및상기상부캐리어운반층상의투명전도성전극을포함한다.
Abstract translation: 光检测器包括：下载体传输层; 包括具有硅纳米晶体的碳化硅（SiC）并设置在所述下载体传输层上的光电转换层; 光电转换层上的上载体传输层; 和在上载体传输层上的透明导电电极。
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公开(公告)号：KR1020140095949A
公开(公告)日：2014-08-04
申请号：KR1020130104205
申请日：2013-08-30
Applicant: 한국전자통신연구원
IPC: H01S3/10
CPC classification number: H01S3/094076 , G02B6/12009 , G02B6/29361 , H01S3/0057
Abstract: Disclosed is a light source output device capable of increasing the output of a light source. The light source output device includes a pulse generator which generates a plurality of optical pulses; a pulse distributor which distributes the optical pulses generated by the pulse generator on a time domain; and an optical coupler which makes the distributed optical pulses to progress in one path. Also, the light source output device further includes an optical amplifier which amplifies the output amplitude of the optical pulses outputted from the optical coupler; a pulse separator which separates the optical pulses amplified by the optical amplifier by corresponding wavelength; and a time delay unit which delays each of the optical pulses separated by wavelength to reach a coupling point at the same point of time. The pulse coupler generates a strengthened optical output by combining the optical pulses which reach the coupling point at the same point of time.
Abstract translation: 公开了能够增加光源的输出的光源输出装置。 光源输出装置包括产生多个光脉冲的脉冲发生器; 脉冲分配器，其在时域上分配由脉冲发生器产生的光脉冲; 以及使分布式光脉冲在一个路径中进行的光耦合器。 此外，光源输出装置还包括放大从光耦合器输出的光脉冲的输出幅度的光放大器; 脉冲分离器，其将由光放大器放大的光脉冲分离成相应的波长; 以及延迟单元，其延迟在波长上分离的每个光脉冲以在相同的时间点到达耦合点。 脉冲耦合器通过组合在同一时间点到达耦合点的光脉冲来产生增强的光输出。
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