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公开(公告)号：KR1020040055571A
公开(公告)日：2004-06-26
申请号：KR1020030082640
申请日：2003-11-20
Applicant: 한국전자통신연구원
CPC classification number: H04B10/07955 , H04B10/296
Abstract: PURPOSE: An apparatus for equalizing optical strength by channels is provided to equalize optical strength of each channel by measuring optical spectrum of each channel of a multi-channel optical signal and controlling optical attenuation degree of each channel according to the measured optical spectrum. CONSTITUTION: A channel optical attenuator(11) receives an optical signal of each channel and attenuates optical signal by channels according to an optical attenuation signal. A multiplexer(20) multiplexes a multi-channel optical signal to a single channel. A light amplifier(30) amplifies the multiplexed optical signal of the single channel. A photocoupler(30-1) separates an amplified optical signal in the ratio of 99:1. The separated 1% optical signal is inputted to an optical spectrum measuring unit(13). The optical spectrum measuring unit(13) separates the inputted optical signal by channels, measures an optical spectrum of each channel, and measures optical strength of each channel. A controller(12) determines an attenuation degree of each channel by comparing the measured optical strength of each channel with a pre-set reference value, and outputs a corresponding optical attenuation signal. The channel optical attenuator(11) equalizes light strength of each channel by attenuating the optical strength of each channel according to the multiple optical attenuation signals outputted from the controller(12).
Abstract translation: 目的：提供通过信道均衡光强度的装置，通过测量多通道光信号的每个通道的光谱并根据测量的光谱控制每个通道的光衰减程度来均衡每个通道的光强度。 构成：信道光衰减器（11）接收每个信道的光信号，并根据光衰减信号衰减信道信号。 多路复用器（20）将多信道光信号复用到单个信道。 光放大器（30）放大单通道的复用光信号。 光电耦合器（30-1）以99:1的比例分离放大的光信号。 分离的1％光信号被输入到光谱测量单元（13）。 光谱测量单元（13）通过信道分离输入的光信号，测量每个通道的光谱，并测量每个通道的光强度。 控制器（12）通过将测量的每个通道的光强度与预设的参考值进行比较来确定每个通道的衰减程度，并输出相应的光衰减信号。 信道光衰减器（11）通过根据从控制器（12）输出的多个光衰减信号衰减每个信道的光强度来均衡每个信道的光强度。
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公开(公告)号：KR1020040051226A
公开(公告)日：2004-06-18
申请号：KR1020020079121
申请日：2002-12-12
Applicant: 한국전자통신연구원
IPC: H04J14/02
CPC classification number: H04Q11/0067 , H04J14/02 , H04Q11/0071 , H04Q2011/0081
Abstract: PURPOSE: An optical transponder for multiplexing Gigabit Ethernet is provided to further effectively utilize the optical channel directly related to the optical transmission capability in the wavelength divisional multiplexing system. CONSTITUTION: An optical transponder for multiplexing Gigabit Ethernet includes an optical transmission/reception block(310), a GbE signal multiplexing block(320), a synchronization matching block and a monitoring control block(380). The optical transmission/reception block(310) converts the GbE optical signal into an electrical signal. The GbE signal multiplexing block(320) maps the GbE electrical signal of the opto-electrically converted multi-channel into synchronous digital hierarchy/synchronous optical network(SDH/SONET) frame. The synchronization matching block process a signal to maintain the SDH/SONET frame and the pointer processing. And, the monitoring control block(380) controls each of the blocks and monitors its performance.
Abstract translation: 目的：提供一种用于复用千兆以太网的光转发器，以进一步有效利用与波分复用系统中的光传输能力直接相关的光信道。 构成：用于复用千兆位以太网的光学应答器包括光发送/接收块（310），GbE信号复用块（320），同步匹配块和监控控制块（380）。 光发送/接收块（310）将GbE光信号转换成电信号。 GbE信号复用块（320）将光电转换的多通道的GbE电信号映射到同步数字层/同步光网络（SDH / SONET）帧。 同步匹配块处理信号以维持SDH / SONET帧和指针处理。 并且，监视控制块（380）控制每个块并监视其性能。
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公开(公告)号：KR100407825B1
公开(公告)日：2003-12-01
申请号：KR1020020009739
申请日：2002-02-23
Applicant: 한국전자통신연구원
IPC: G02B6/00
CPC classification number: H01S3/302 , H01S3/06725 , H01S3/06758 , H01S3/094011 , H01S3/094096 , H01S3/1608 , H01S3/2375 , H01S2301/04
Abstract: A low-noise optical fiber amplifier for performing a long-distance optical transmission in a wavelength division multiplexing optical transmission apparatus is provided. This amplifier includes a first optical fiber amplifier having a pre-stage optical fiber, and a first coupler for supplying pump light to the pre-stage optical fiber; a dispersion compensating Raman amplifier (DCRA) connected to the first optical fiber amplifier and having a dispersion compensating optical fiber (DCF) that compensates for the dispersion accumulated in an optical line and generates a Raman gain, and a second coupler for supplying Raman pump light onto the DCF; and a second optical fiber amplifier connected to the DCRA, and including a post-stage optical fiber and a third coupler for supplying pump light onto the post-stage optical fiber. Accordingly, this optical fiber amplifier is used for terrestrial WDM optical transmission, and thus has remarkably low noise figure compared to the existing optical amplifiers. For this reason, the optical fiber amplifier is available in long-distance transmission, and can be used in optical networks.
Abstract translation: 提供一种用于在波分复用光传输设备中执行长距离光传输的低噪声光纤放大器。 该放大器包括具有前级光纤的第一光纤放大器和用于将泵浦光提供给前级光纤的第一耦合器; 色散补偿拉曼放大器（DCRA），连接到第一光纤放大器并且具有色散补偿光纤（DCF），该色散补偿光纤补偿光线中累积的色散并产生拉曼增益;以及第二耦合器，用于提供拉曼泵浦光 到DCF上; 以及连接到DCRA的第二光纤放大器，并且包括后级光纤和用于将泵浦光提供到后级光纤上的第三耦合器。 因此，该光纤放大器用于地面WDM光传输，因此与现有的光放大器相比具有显着低的噪声系数。 为此，光纤放大器可用于长距离传输，并可用于光网络。
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公开(公告)号：KR1020030070272A
公开(公告)日：2003-08-30
申请号：KR1020020009739
申请日：2002-02-23
Applicant: 한국전자통신연구원
IPC: G02B6/00
CPC classification number: H01S3/302 , H01S3/06725 , H01S3/06758 , H01S3/094011 , H01S3/094096 , H01S3/1608 , H01S3/2375 , H01S2301/04
Abstract: PURPOSE: A low noise dispersion compensating hybrid type optical fiber amplifier is provided to reduce largely the noise by coupling a DCRA(Dispersion Compensating Raman Amplifier) to an EDFA(Erbium Doped Fiber Amplifier) and installing an EDFA of short length at a front end thereof. CONSTITUTION: A low noise dispersion compensating hybrid type optical fiber amplifier includes the first optical fiber amplifier, a DCRA(12), and the second optical fiber amplifier. The first optical fiber amplifier includes a front end fiber(11) and the first coupler(114) for supplying the pumping light to the front end fiber. The DCRA is connected to the first optical fiber amplifier. The DCRA includes a DCF(Dispersion Compensating Fiber)(122) for generating a Raman gain and the second coupler(128) for supplying the Raman pumping light to the DCF. The second optical fiber amplifier is connected to the DCRA. The second optical fiber amplifier includes the third coupler for supplying the pumping light to a rear end fiber.
Abstract translation: 目的：提供一种低噪声色散补偿混合型光纤放大器，通过将DCRA（色散补偿拉曼放大器）耦合到EDFA（掺铒光纤放大器）并在其前端安装短长度的EDFA来大大减少噪声 。 构成：低噪声色散补偿混合型光纤放大器包括第一光纤放大器，DCRA（12）和第二光纤放大器。 第一光纤放大器包括用于向前端光纤提供泵浦光的前端光纤（11）和第一耦合器（114）。 DCRA连接到第一个光纤放大器。 DCRA包括用于产生拉曼增益的DCF（色散补偿光纤）（122）和用于向DCF提供拉曼泵浦光的第二耦合器（128）。 第二个光纤放大器连接到DCRA。 第二光纤放大器包括用于向后端光纤提供泵浦光的第三耦合器。
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公开(公告)号：KR100381007B1
公开(公告)日：2003-04-26
申请号：KR1020000082202
申请日：2000-12-26
IPC: G01J3/28
Abstract: PURPOSE: An optical spectrometer and optical detection method is provided to reduce cost and simplify the configuration of optical spectrometer by reducing the number of optical elements. CONSTITUTION: An optical spectrometer comprises an acoustic wave generating unit for generating wavelength of a specific frequency; an acoustic transducer unit(21) for applying the acoustic wave generated from the acoustic wave generating unit to an optical fiber; and an optical detection unit(23) for detecting the light emitted through the optical fiber by the acoustic wave applied to the optical fiber by the acoustic transducer unit. An optical detection method comprises a first step of generating wavelength of a specific frequency; a second step of applying the acoustic wave generated in the first step to an optical fiber; and a third step of detecting the light emitted through the optical fiber by the acoustic wave applied in the second step.
Abstract translation: 目的：提供光谱仪和光学检测方法，通过减少光学元件的数量来降低成本并简化光谱仪的配置。 构成：一种光谱仪包括：用于产生特定频率的波长的声波发生单元; 声波换能器单元（21），用于将从声波发生单元产生的声波施加到光纤; 以及光学检测单元（23），用于检测通过由声学换能器单元施加到光纤的声波通过光纤发射的光。 一种光学检测方法包括：产生特定频率的波长的第一步骤; 第二步骤，将在第一步骤中产生的声波施加到光纤; 以及第三步骤，检测通过在第二步骤中施加的声波而通过光纤发射的光。
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Patent Agency Ranking
公开(公告)号：KR1020020039447A
公开(公告)日：2002-05-27
申请号：KR1020000069263
申请日：2000-11-21
IPC: G02B6/38
CPC classification number: H04B10/2916 , H01S3/06754 , H01S3/302 , H04B10/2525
Abstract: PURPOSE: A dispersion compensating Raman amplifier(DCRA) using a depolarizer is provided, which obtains a stable amplification signal by using the depolarizer to remove a polarization of a pump light, and a hybrid fiber amplifier using the same is provided, which increases an efficiency by combining the dispersion compensating Raman amplifier with an EDFA(Erbium Doped Fiber Amplifier). CONSTITUTION: According to the hybrid fiber amplifier using a dispersion compensating Raman amplifier(DCRA)(110), a dispersion compensating Raman amplification unit performs a dispersion compensating amplification of an incident light signal by making a Raman pump light, whose polarization is removed using a depolarizer, be incident in a reverse direction. And a fiber amplifier unit(120) receives the light signal amplified through the above dispersion compensating Raman amplification unit and then amplifies it again. The hybrid fiber amplifier further includes a density inversion improving unit to increase a front density inversion of the dispersion compensating Raman amplification unit.
Abstract translation: 目的：提供使用消偏器的色散补偿拉曼放大器（DCRA），通过使用去偏振器去除泵浦光的偏振，获得稳定的放大信号，并提供使用其的混合光纤放大器，从而提高效率 通过组合色散补偿拉曼放大器与EDFA（掺铒光纤放大器）。 构成：根据使用色散补偿拉曼放大器（DCRA）（110）的混合光纤放大器，色散补偿拉曼放大单元通过制作拉曼泵浦光进行入射光信号的色散补偿放大，其偏振使用 去极化反应方向相反。 并且光纤放大器单元（120）接收通过上述色散补偿拉曼放大单元放大的光信号，然后再次放大。 混合光纤放大器还包括密度反演改善单元，用于增加色散补偿拉曼放大单元的正面密度反转。
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公开(公告)号：KR100319781B1
公开(公告)日：2002-01-09
申请号：KR1019990055888
申请日：1999-12-08
IPC: H01S3/067
Abstract: 본발명은하나의브릴루앙어븀광섬유레이저시스템에서 10 ㎓및 20 ㎓의이중간격다파장광을출력하는브릴루앙어븀광섬유레이저에관한것으로, 광섬유사냑거울을내장한광섬유레이저에단일파장의유도브릴루앙산란펌프광을입사하여 10 ㎓간격및 20 ㎓간격의다파장광원을발생시킬수 있는다파장브릴루앙어븀광섬유레이저를구성하는데특징이있다. 본발명에따른다파장브릴루앙어븀광섬유레이저는, 유도브릴루앙산란매질역할의분산천이광섬유와 50/50 광섬유방향성결합기로구성된사냑거울에, 이와함께레이저공진기를구성하는제1 거울과제2 거울을연결하여, 사냑거울과제1 거울로이루어지는제1 레이저공진기및 사냑거울과제2 거울로이루어지는제2 레이저공진기가구성된다.
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公开(公告)号：KR100281412B1
公开(公告)日：2001-02-01
申请号：KR1019980051078
申请日：1998-11-26
IPC: H04B10/291 , H04B10/2581 , H04B10/03
Abstract: 파장 분할 다중 광 전송기술을 이용하는 다 채널 광 전송장치 및 광 전송망에서 재 구성 또는 고장(faults) 등에 의해 임의의 채널 광 신호의 추출/삽입 및 채널신호 고장 시에도 광 전력증폭기로 들어가는 다 채널 입력 광 세기를 일정하게 조절하여 살아서 전송되는 신호들을 정상적으로 동작되게 하는 동적 이득 제어기능을 구비한 다 채널 광 전송장치 및 애드/드롭 다중화장치가 개시된다. 본 발명은 광 전력증폭기의 출력신호를 광 검출기로 모니터하고, 이 신호의 크기 변화를 이용하여 궤환 회로를 통해 광 감쇠기의 전압을 조절하여 광 전력증폭기로 들어가는 다 채널 입력 광 신호들의 크기를 일정하게 조절한다. 본 발명에 따라 이득 등화된 광 전력증폭기의 출력신호는 이득 등화 특성을 그대로 유지하며 신호가 전달된다. 또한, 이득 등화된 출력신호는 여러 개의 광 섬유 증폭기에서 증폭될 때에도 이득 등화 특성이 처음에 설정된 상태를 유지하게 되며, 채널 별 신호 크기는 일정하게 증가되어 광 신호 대 잡음비 (Optical Signal to Noise Ratio)가 증가된다. 그 결과, 수신기의 광 신호 대 잡음비가 증가하여 수신 특성을 향상시킨다.
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公开(公告)号：KR1020000033359A
公开(公告)日：2000-06-15
申请号：KR1019980050199
申请日：1998-11-23
IPC: H04B17/00
CPC classification number: H04J14/0275 , H04J14/0202
Abstract: PURPOSE: An apparatus for inserting/extracting the monitoring channel in multichannel optical transmission system and the method thereof are provided to monitor each channel by extracting multi-section monitoring channel, after aligning the wavelength distance of each light source and inserting multi-section monitoring channel. CONSTITUTION: A plurality of optical separators(111-11n) separate the input optical signals transmitted from the external. Optical-to-electrical converters(121-12n) convert the optical signals transmitted separately from the optical separators(111-11n) into electrical signals correspondingly. An optical multiplexer(130) multiplexes the separately transmitted optical signals. An optical separator(11(n+1)) separates the optical signal multiplexed by the optical multiplexer(130). An optical-to-electrical converter(12(n+1)) converts the optical signals transmitted separately from the optical separator(11(n+1)) into electrical signals correspondingly. Amplifiers(131-13(n+1)) amplify the electrical signals outputted from the optical-to-electrical converter(12(n+1)). A multiplexer(140) multiplexes the amplified electrical signals. An A/D converter(150) converts a signal of analog pattern into a digital signal. A decoder(160) decodes the digital signal. A monitoring channel transmitter(170) transmits the optical signal of a monitoring channel. An optical inserter(180) inserts the optical signal from the optical separator(11(n+1)) into the optical signal of the monitoring channel. An alarm controller(190) generates an alarm control signal. A light emitting diode(191) displays that the converted electrical signal is not normal.
Abstract translation: 目的：一种用于在多通道光传输系统中插入/提取监控通道的设备及其方法，其特征在于，通过提取多段监控通道，在对准每个光源的波长距离和插入多段监控通道之后，监控每个通道 。 构成：多个光分离器（111-11n）分离从外部发送的输入光信号。 光 - 电转换器（121-12n）将从光分离器（111-11n）分开传输的光信号相应地转换成电信号。 光复用器（130）复用单独传输的光信号。 光分离器（11（n + 1））分离由光复用器（130）复用的光信号。 光电转换器（12（n + 1））将分别从光分离器（11（n + 1））发送的光信号相应地转换为电信号。 放大器（131-13（n + 1））放大从光电转换器（12（n + 1））输出的电信号。 多路复用器（140）多路复用放大的电信号。 A / D转换器（150）将模拟模式的信号转换为数字信号。 解码器（160）对数字信号进行解码。 监控通道发送器（170）发送监视通道的光信号。 光插入器（180）将来自光学分离器（11（n + 1））的光信号插入到监视通道的光信号中。 报警控制器（190）产生报警控制信号。 发光二极管（191）显示转换的电信号不正常。
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公开(公告)号：KR100198937B1
公开(公告)日：1999-06-15
申请号：KR1019960045469
申请日：1996-10-11
IPC: H04B10/291 , H04B10/25
Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
광섬유증폭기의 출력신호 조절장치
2. 발명이 해결하려고 하는 기술적 과제
각각의 광섬유증폭기의 총출력 세기는 일정하게 유지하면서 출력광섬유에서 각 채널의 광신호크기를 일정하게 하고자 함.
3. 발명의 해결방법의 요지
광신호를 발생하는 광원으로 파장이 분할되어 배열되는 신호발생부; 상기 신호발생부로부터 인가되는 각 광의 편광상태를 조절하는 편광조절부; 상기 편광조절부에서 편광상태가 조절된 광신호를 전송에 적합한 신호로 변조하는 변조기; 상기 각 광신호가 결합된 상태인 다채널 광신호를 증폭하여 전송거리를 늘여주는 광섬유증폭부; 상기 광섬유증폭부에서 출력되는 광의 세기에서 해당 채널을 분리하는 채널분리부; 상기 분리된 각 채널의 광신호를 검출하는 광수신부; 및 상기 광수신부의 신호를 받아 신호처리하여 상기 편광조절부를 구동하는 편광조절기 조절부를 구비함.
4. 발명의 중요한 용도
광전송장치에 이용됨.
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