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公开(公告)号：KR101382619B1
公开(公告)日：2014-04-07
申请号：KR1020100065956
申请日：2010-07-08
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/50 , H04B10/60
CPC classification number: H04B10/5053 , H04B10/5561 , H04B10/66
Abstract: 광 송신 장치는 각각의 파장을 가지는 두 개의 광 캐리어의 위상을 이용하여 송신 신호를 광 변조하여 광 수신 장치로 전송하며, 광 수신 장치는 위상 변조된 광 신호를 크기 변조로 복조하여 송신 신호를 검출한다.
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公开(公告)号：KR1020130093705A
公开(公告)日：2013-08-23
申请号：KR1020110141237
申请日：2011-12-23
Applicant: 한국전자통신연구원
CPC classification number: H04J14/026 , H04J14/0224
Abstract: PURPOSE: A multicarrier based optical signal transmitting apparatus and optical signal receiving apparatus are provided to accommodate a high-speed optical signal in both a fixed frequency grid mode and a flexible frequency grid mode, and achieve a long-distance transmission of a high-speed signal by lessening the requirement of an optical signal-to-noise ratio (OSNR). CONSTITUTION: An optical carrier generator (210) is configured to generate a plurality of optical carriers and outputs the optical carriers to optical modulators corresponding to the optical carriers, respectively. A plurality of optical modulators (231-233) is configured to modulate the optical carriers, respectively, according to an input signal. An optical combiner (240) is configured to couple a plurality of optical signals from the plurality of optical modulators. Center frequencies and frequency intervals of the plurality of optical carriers are variable. [Reference numerals] (210) Optical carrier generator; (220) Control unit; (231) Optical modulator #1; (232) Optical modulator #2; (233) Optical modulator #3; (240) Optical combiner; (AA) Transmitting signal #1_a; (BB) Transmitting signal #2_a; (CC) Transmitting signal #3_a; (DD) Transmitting signal #1_b; (EE) Transmitting signal #2_b; (FF) Transmitting signal #3_c; (GG) Output light signal
Abstract translation: 目的：提供一种基于多载波的光信号发送装置和光信号接收装置，以适应固定频率网格模式和灵活频率格网模式的高速光信号，实现高速光信号的高速光信号 信号通过减少光信噪比（OSNR）的要求。 构成：光载波发生器（210）被配置为产生多个光载波并将光载波分别输出到对应于光载波的光调制器。 多个光调制器（231-233）被配置为分别根据输入信号调制光载波。 光学组合器（240）被配置为耦合来自多个光学调制器的多个光信号。 多个光学载体的中心频率和频率间隔是可变的。 （附图标记）（210）光载波发生器; （220）控制单元; （231）光调制器＃1; （232）光调制器＃2; （233）光调制器＃3; （240）光合并器; （AA）发送信号＃1_a; （BB）发送信号＃2_a; （CC）发送信号＃3_a; （DD）发送信号＃1_b; （EE）发送信号＃2_b; （FF）发送信号＃3_c; （GG）输出光信号
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公开(公告)号：KR1020130074517A
公开(公告)日：2013-07-04
申请号：KR1020110142608
申请日：2011-12-26
Applicant: 한국전자통신연구원
IPC: G02B6/28
CPC classification number: G02B6/02042 , H01S3/06737 , H01S3/06754 , H01S3/094007 , H01S3/094011 , H01S3/09408
Abstract: PURPOSE: A multi core optical fiber, a wavelength division multiplexing coupler for the multi core optical fiber, and a multi core optical fiber amplifier are provided to use few pumping light sources in which structure is simple. CONSTITUTION: A multi core optical fiber amplifier comprises double-clad multi core optical fibers (601, 608), pumping light sources (609, 610), an optical fiber, and a wavelength division multiplexing coupler (603). The double-clad multi core optical fiber comprises multiple cores, inner cladding covering the multiple cores, outer cladding covering the inner cladding. The pumping light sources output pumping light. The pumping light from the pumping light sources is inserted into the optical fiber. The wavelength division multiplexing coupler controls so than the pumping light which inserted into the optical fiber form the pumping light sources is applied to the multi core optical fiber by coupling the optical fiber with the double-clad multi core optical fibers.
Abstract translation: 目的：提供多芯光纤，多芯光纤的波分复用耦合器和多芯光纤放大器，使用的结构简单的泵浦光源很少。 构成：多芯光纤放大器包括双包层多芯光纤（601,608），泵浦光源（609,610），光纤和波分复用耦合器（603）。 双包层多芯光纤包括多个芯，覆盖多个芯的内包层，覆盖内包层的外包层。 泵浦光源输出泵浦光。 来自泵浦光源的泵浦光被插入到光纤中。 波分复用耦合器控制比插入光纤的泵浦光，通过将光纤与双包层多芯光纤耦合，将泵浦光源施加到多芯光纤。
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公开(公告)号：KR1020120132986A
公开(公告)日：2012-12-10
申请号：KR1020110051420
申请日：2011-05-30
Applicant: 한국전자통신연구원
IPC: H04B10/02 , H04L29/10 , H04B10/2581 , H04J14/02
CPC classification number: H04J14/02 , H04B10/506 , H04B10/60 , H04J14/0298
Abstract: PURPOSE: An interface device between a dual-carrier optical transceiving device and a WDM(Wavelength Division Multiplexing) optical transmission path are provided to efficiently supply an interface between the dual-carrier optical transceiving device and the WDM optical transmission path. CONSTITUTION: An optical multiplexer(230) inputs a first optical signal and a second optical signal from a dual-carrier optical transceiving device. The optical multiplexer multiplexes the first optical signal and the second optical signal. The optical multiplexer outputs the multiplexed optical signal to the optical transmission path. An optical demultiplexer(240) inputs an optical signal multiplexed from the optical transmission path. The optical demultiplexer demultiplexes the multiplexed optical signal. [Reference numerals] (220) Dual carrier optical transceiving device
Abstract translation: 目的：提供双载波光收发设备和WDM（波分复用）光传输路径之间的接口设备，以有效地提供双载波光收发设备和WDM光传输路径之间的接口。 构成：光复用器（230）从双载波光收发装置输入第一光信号和第二光信号。 光复用器复用第一光信号和第二光信号。 光复用器将复用的光信号输出到光传输路径。 光解复用器（240）输入从光传输路径复用的光信号。 光解复用器对复用的光信号进行解复用。 （220）双载波光收发装置
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公开(公告)号：KR1020110010558A
公开(公告)日：2011-02-01
申请号：KR1020100065956
申请日：2010-07-08
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/50 , H04B10/60
CPC classification number: H04B10/5053 , H04B10/5561 , H04B10/66
Abstract: PURPOSE: An optical transmitter for transmitting an optical signal through a symbol rate at high transmission speed is provided to simplify a structure of an optical transceiver without using an ADC(Analog to Digital Converter), a high speed DSP(Digital Signal Processor) and a polarizing controller. CONSTITUTION: An optical transmitter(100) includes a dual carrier generator(120), a serialization unit(110), a first modulator, and a second modulator. The dual carrier generator generates the first and second optical carriers. The serialization unit multiplexes input signals into two pairs of I and Q signals. The first modulator modulates one pair of I and Q signals in the use of the phase of the first optical carrier. The second modulator modulates the other pair of I and Q signals in the use of the phase of the second optical carrier.
Abstract translation: 目的：提供一种用于以高传输速度通过符号率发送光信号的光发射机，以简化光收发器的结构，而不使用ADC（模数转换器），高速DSP（数字信号处理器）和 极化控制器。 构成：光发射机（100）包括双载波发生器（120），串行化单元（110），第一调制器和第二调制器。 双载波发生器产生第一和第二光载波。 串行化单元将输入信号复用成两对I和Q信号。 第一调制器在使用第一光载波的相位时调制一对I和Q信号。 第二调制器在使用第二光载波的相位时调制另一对I和Q信号。
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Patent Agency Ranking
公开(公告)号：KR100908239B1
公开(公告)日：2009-07-20
申请号：KR1020060123398
申请日：2006-12-06
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/00
CPC classification number: H04J14/0212
Abstract: Provided are a channel express/add optical module and a method of channel express/add in an optical add/drop multiplexer node using the channel express/add optical module. The channel express/add optical module comprises: a multiplexer/demultiplexer which demultiplexes a multiplexed optical signal having a plurality of wavelengths into individual wavelength optical signals or multiplexes a plurality of different wavelength optical signals; a plurality of 1×2 switches each of which includes a first output end that guides the demultiplexed different wavelength optical signals to output them thereto and a second output end through which new wavelength optical signals; and a plurality of reflectors each of which reflects the optical signal output to the first output end so that the optical signal is feedback to the multiplexer/demultiplexer via the 1×2 switches. The channel express/add optical module and the method of channel express/add in an OADM using this optical module are applied to a reconfigurable optical add/drop multiplexer system, and can express/add multiplexed channels in a node using a simple structure.
Abstract translation: 本发明提供了一种信道快递/增加光模块以及使用信道增补/增加光模块在光分插复用节点中进行信道增加/增加的方法。 信道增加/增加光学模块包括：多路复用器/多路分解器，其将具有多个波长的多路复用光信号多路分解成单个波长光信号或多路复用多个不同波长光信号; 多个1×2开关，每个开关包括引导解复用的不同波长的光信号输出到其中的第一输出端和通过其输出新的波长光信号的第二输出端; 以及多个反射器，每个反射器将输出到第一输出端的光信号反射，使得光信号通过1×2开关反馈到多路复用器/多路分离器。 使用该光模块的OADM中的信道增加/增加光模块和信道增加/增加方法被应用于可重构光分插复用器系统，并且可以使用简单结构在节点中表示/添加复用信道。
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公开(公告)号：KR100903217B1
公开(公告)日：2009-06-18
申请号：KR1020070087741
申请日：2007-08-30
Applicant: 한국전자통신연구원
IPC: H04B10/03 , H04B10/032 , H04B10/2581
CPC classification number: H04J14/029 , H04J14/0284
Abstract: 파장분할 다중화(wavelength division multiplexing) 광 전송 기술이 구현된 광 네트워크의 각 노드(node)에서 광 채널의 보호 절체에 있어서, 광섬유 입출력 개수가 적어도 둘 이상인 노드에서도 적용될 수 있는 광 채널 보호 절체 방법을 제공하는 광 채널의 보호 절체 장치가 개시된다. 본 발명의 광 채널 보호 절체 장치는 전기적 신호를 입력받아 이와 실질적으로 동일한 복수의 전기적 신호로 분기하는 분기부; 상기 광 네트워크의 광 채널 경로 제어 명령에 따라, 상기 분기부에서 분기된 전기적 신호의 출력 경로를 선택하는 출력 스위칭부; 및 상기 전기적 신호의 출력 경로마다 각각 구비되어 상기 출력 스위칭부의 선택에 따라 입력되는 전기적 신호를 광 신호로 변환하여 상기 광 네트워크의 타 노드로 전송하는 다수의 광트랜스폰더들을 포함하는 것을 특징으로 한다. 이에 의해 복잡한 메쉬 형태의 광 네트워크 내에서도 적용될 수 있는 광 채널 보호 절체 방법을 제공할 수 있다.
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公开(公告)号：KR1020090022407A
公开(公告)日：2009-03-04
申请号：KR1020070087741
申请日：2007-08-30
Applicant: 한국전자통신연구원
IPC: H04B10/03 , H04B10/032 , H04B10/2581
CPC classification number: H04J14/029 , H04J14/0284
Abstract: An apparatus for protection switching of an optical channel and a method thereof are provided to transfer signals more stably even in a complicated optical network by selecting only two output paths in a node having at least two or more optical fiber input/output terminals to transmit the signals. An apparatus for protection switching of an optical channel comprises a branching unit(500), an output switching unit(510), a plurality of optical transponders(520-1_520-n), and an input switching unit(530). The branching unit receives an electric signal and then branches the signal into the same plural electric signal as the received electric signal. The output switching unit selects output paths of the branched electric signal according to an optical channel path control command of an optical network. The optical transponders are equipped on the output paths of the electric signals. The input switching unit receives the optical signals of the same wavelength from two optical transponders equipped in a previously established operation path a protection path.
Abstract translation: 提供了一种用于光信道保护切换的装置及其方法，即使在具有至少两个或更多个光纤输入/输出终端的节点中仅选择两个输出路径，即使在复杂的光网络中也能更稳定地传送信号， 信号。 一种光通道保护切换装置，包括分支单元（500），输出切换单元（510），多个光转发器（520-1_520-n）和输入切换单元（530）。 分支单元接收电信号，然后将信号分支成与接收的电信号相同的多个电信号。 输出切换单元根据光网络的光信道路径控制指令选择分支电信号的输出路径。 光转发器装在电信号的输出路径上。 输入切换单元从预先建立的操作路径中的两个光学应答器接收相同波长的光信号，保护路径。
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公开(公告)号：KR1020080051776A
公开(公告)日：2008-06-11
申请号：KR1020060123398
申请日：2006-12-06
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/00
CPC classification number: H04J14/0212
Abstract: An optical module for channel express/add and a channel express/add method at an OADM(Optical Add-Drop Multiplexer) node using the same are provided to perform the same function as an exiting module by using one multiplexer, and to minimize power consumption by not requiring a temperature control circuit unit. A multiplexing/demultiplexing unit(230) demultiplexes a multiplexed optical signal having plural wavelength components or multiplexes plural different wavelength optical signals. Plural 1 x 2 switch units(250-1 to 250-n) induce each of the demultiplexed wavelength component optical signal to a first output terminal, and output the induced signal. The 1 x 2 switch unit receives a new wavelength component optical signal through a second output terminal. Plural reflectors(260-1 to 260-n) reflect the optical signal outputted to the first output terminal, to be fed back to the multiplexing/demultiplexing unit via the 1 x 2 switch unit.
Abstract translation: 提供用于使用其的OADM（光插入多路复用器）节点上的用于信道表示/添加的光模块和信道快速/加法方法，以通过使用一个多路复用器来执行与退出模块相同的功能，并且最小化功耗 不需要温度控制电路单元。 复用/解复用单元（230）对具有多个波长分量的复用光信号进行多路复用或多路复用多个不同波长的光信号。 多个1×2个开关单元（250-1至250-n）将解复用的波长分量光信号中的每一个引导到第一输出端，并输出感应信号。 1×2开关单元通过第二输出端接收新的波长分量光信号。 多个反射器（260-1至260-n）反射输出到第一输出端的光信号，经由1×2开关单元反馈到复用/解复用单元。
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公开(公告)号：KR100668284B1
公开(公告)日：2007-01-16
申请号：KR1020040105709
申请日：2004-12-14
Applicant: 한국전자통신연구원
IPC: G02B6/02
CPC classification number: H01S3/302 , G02B6/02028 , G02B6/02261 , G02B6/0281 , G02B6/03644 , H01S3/06725 , H01S3/06729 , H01S3/06775 , H01S3/1695
Abstract: 전송 용량의 증가로 기존의 C/L 밴드와 더불어 S 밴드까지 전송 대역을 확장하고자 하는 요구가 급증하고 있다. 라만 증폭기는 다양한 이득 대역에서 증폭이 가능하며 잡음 특성이 우수하여 S 밴드 증폭기로 각광을 받고 있다. 이러한 라만 증폭기에서는 고출력 펌프 레이저 다이오드와 함께 증폭 매체인 광섬유의 특성이 매우 중요하다. 특히 분리형 라만 증폭은 전송로가 아닌 분산보상광섬유나 비선형 광섬유에 라만 펌핑을 함으로써 광섬유 내의 라만 비선형 현상을 이용하여 증폭하는 기술이다. 따라서 높은 이득을 얻기 위해서는 증폭 매체인 광섬유의 특성이 매우 중요하다. 이에 본 발명에서는 S 밴드 분리형 라만 증폭기에 적합한 분산보상광섬유를 설계하였다. 라만 이득 계수와 S 밴드에서의 분산 특성, 손실 등을 고려하였다. 본 발명에서 제안하는 분산보상광섬유는 S 밴드 분리형 라만 증폭기의 성능을 향상시켜 효율적인 전송 대역 확장을 가능케 할 것이다.
분리형 라만 증폭기, S 밴드, 분산, 유효 면적, 라만 이득 계수, 손실
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