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1.发明公开
公开(公告)号：KR1020110070259A
公开(公告)日：2011-06-24
申请号：KR1020090127011
申请日：2009-12-18
Applicant: 한국과학기술원
IPC: H04B10/548 , H04B10/2581
Abstract: PURPOSE: A method for creating a PSK signal, an apparatus for creating the PSK signal, and an optical network using the same are provided to create the PSK signal and a QPSK(Quadrature Phase Shift Keying) signal through a RSOA. CONSTITUTION: Using a PPG(Pulse Pattern Generator)(41), the electric signal of 2 level is created. A RSOA(Reflective Semiconductor Optical Amplifier) creates a PSK(Phase Shift Keying) signal with the phase shifting characteristic of an output signal generated in direct modulation. The rotation angle of a mark increases in proportion to the size of a modulation current. By the control of the size of the modulation current, the RSOA performs the phase modulation. In case an extinction ratio is 2.0 dB due to the influence of pattern, the performance of a signal is optimized.
Abstract translation: 目的：提供一种用于创建PSK信号的方法，用于创建PSK信号的装置和使用该PSK信号的光网络，以通过RSOA创建PSK信号和QPSK（正交相移键控）信号。 构成：使用PPG（脉冲模式发生器）（41），创建2级的电信号。 RSOA（反射半导体光放大器）产生具有直接调制产生的输出信号的相移特性的PSK（相移键控）信号。 标记的旋转角度与调制电流的大小成比例地增加。 通过控制调制电流的大小，RSOA执行相位调制。 如果由于图案的影响，消光比为2.0dB，则信号的性能被优化。
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公开(公告)号：KR101168761B1
公开(公告)日：2012-07-26
申请号：KR1020090127011
申请日：2009-12-18
Applicant: 한국과학기술원
IPC: H04B10/548 , H04B10/2581
Abstract: 반사형 반도체 광증폭기(Reflective Semiconductor Optical Amplifier, RSOA)를 사용하여 위상 변조 신호를 생성하는 방법에 관하여 개시한다. 본 발명의 방법은, 반사형 반도체 광증폭기의 변조 전류의 크기를 변화시켜 발생하는 광증폭기의 출력 신호의 위상 변이 특성으로 위상 변조 신호를 생성하는 것을 특징으로 한다. 본 발명에 의하면, 반사형 반도체 광증폭기를 이용하여 위상 편이 변조(Phase Shift Keying, PSK) 신호 및 직교 위상 편이 변조(Quadrature Phase Shift Keying, QPSK) 신호를 생성이 가능하므로 반사형 반도체 광증폭기 기반의 파장분할 다중방식 수동형 광가입자망의 성능을 향상시킬 수 있고, 셀프 호모다인 수신기의 장점을 활용할 수 있는 장점이 있다.
위상 변조 신호, 반사형 반도체 광증폭기, 위상 편이 변조, 직교 위상 편이 변조-
公开(公告)号：KR1020110083072A
公开(公告)日：2011-07-20
申请号：KR1020100003094
申请日：2010-01-13
Applicant: 한국과학기술원
CPC classification number: H04B10/2507 , H04B10/299
Abstract: PURPOSE: An optical reproducer of a strength modulation optical signal is provided to reproduce a signal, which strength is generally modulated, to facilitate a design of an optical transmission network. CONSTITUTION: A first optical band pass filter(210) has a NOLM(Nonlinear Optical Loop Mirror). A first optical band pass filter is installed in front end of an input end of the NOLM. A second optical pass filter(220) is installed in rear end of the NOLM which an optical signal that does not reflect from the NOLM is outputted. Spectrum of strength modulation optical signal using a non-solition pulse is prevented from being widen.
Abstract translation: 目的：提供强度调制光信号的光学再现器，以再现通常调制强度的信号，以便于光传输网络的设计。 构成：第一光带通滤波器（210）具有NOLM（非线性光环路镜）。 第一个光学带通滤波器安装在NOLM输入端的前端。 第二光通滤波器（220）安装在NOLM的后端，输出不从NOLM反射的光信号。 防止使用非拼接脉冲的强度调制光信号的频谱被扩大。
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公开(公告)号：KR1020110132777A
公开(公告)日：2011-12-09
申请号：KR1020100052305
申请日：2010-06-03
Applicant: 한국과학기술원
CPC classification number: H04L7/02 , H04L27/2338
Abstract: PURPOSE: A phasor monitoring method of a phase modulation signal using a software based synchronization method is provided to accurately modulate an optical signal. CONSTITUTION: A differential phasor monitoring device using a software based synchronization method includes a part(110) for demodulating an optical signal, a part(120) for extracting a clock from sampled data, and a part(130) for monitoring a phasor. The differential phasor monitoring device use a delay interference system for demodulating an optical signal. The delay interference system is a Mach-Zehnder or a delay system(112) made of 3X3 couplers. The delay time of the delay interference system is the same as a symbol cycle of an optical signal.
Abstract translation: 目的：提供使用基于软件的同步方法的相位调制信号的相量监视方法，以准确地调制光信号。 构成：使用基于软件的同步方法的差分相量监视装置包括用于解调光信号的部分（110），用于从采样数据中提取时钟的部分（120）和用于监视相量的部分（130）。 差分相量监测装置使用延迟干扰系统来解调光信号。 延迟干扰系统是由3X3耦合器制成的马赫曾德或延迟系统（112）。 延迟干扰系统的延迟时间与光信号的符号周期相同。
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公开(公告)号：KR1020110081417A
公开(公告)日：2011-07-14
申请号：KR1020100001571
申请日：2010-01-08
Applicant: 한국과학기술원
IPC: H04B10/07
Abstract: PURPOSE: A performance monitoring method of an optical signal is provided to monitor the performance of the optical signal regardless of a modulation mode. CONSTITUTION: Using coherent mixing, information about the size and phase of an optical signal is received. The received information is collected with an asynchronous delay tap sampling technology. The received information is analyzed. The distribution of the size noise and phase noise of the optical signal is measured. The coherent mixing is performed by optical hybrid or a free space device. An RF power distributer, a RF delay line, or an ADC(Analog to Digital Converter) is used for the asynchronous delay tap sampling technology.
Abstract translation: 目的：提供光信号的性能监测方法，以监测光信号的性能，而不管调制方式如何。 构成：使用相干混合，接收关于光信号的大小和相位的信息。 收到的信息采用异步延迟抽头技术收集。 分析收到的信息。 测量光信号的尺寸噪声和相位噪声的分布。 相干混合通过光学混合或自由空间器件进行。 RF功率分配器，RF延迟线或ADC（模数转换器）用于异步延迟抽头抽样技术。
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Patent Agency Ranking
公开(公告)号：KR101067917B1
公开(公告)日：2011-09-28
申请号：KR1020100003094
申请日：2010-01-13
Applicant: 한국과학기술원
Abstract: 논솔리톤 펄스를 사용하는 세기 변조 광신호의 광학 재생기에 관하여 개시한다. 본 발명의 장치는, 비선형 광섬유 거울과; 비선형 광섬유 거울의 입력단 전단에 설치되는 제1 광학 대역통과필터와; 비선형 광섬유 거울에서 반사되지 않은 광신호가 출력되는 상기 비선형 광섬유 거울의 후단에 설치되는 제2 광학 대역통과필터가 구비되어, 논솔리톤 펄스를 사용하는 세기 변조 광신호의 스펙트럼이 넓어지는 것을 방지하는 것을 특징으로 한다. 본 발명에 의하면, 종래의 비선형 광섬유 거울 기반의 광학 재생기를 듀티비가 매우 낮은 극초단 솔리톤 펄스뿐만 아니라 일반적인 세기 변조된 신호에 적용할 수 있게 함으로써 광전송망의 디자인을 용이하게 하고 송신단에서 신호를 변조함에 있어서 복잡도를 줄여준다.
Abstract translation: 以及使用非孤立脉冲的强度调制光信号的光再生器。 本发明的设备包括：非线性光纤镜; 第一光学带通滤波器，设置在非线性光纤镜的输入端的前端; 设置有第二光学带通滤波器，其被安装在所说的非线性光学反射镜的下游不反映在非线性光纤镜输出的光信号，其特征在于，以防止强度调制的光信号的频谱使用非孤子脉冲加宽 它应。 根据本发明，与常规非线性光纤玻璃基光再生器通过允许的占空比，以及应用到调制信号共同强度非常低的超短孤子脉冲促进光传输网络的设计在发送端作为调制信号 这降低了复杂性。
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公开(公告)号：KR101053057B1
公开(公告)日：2011-09-01
申请号：KR1020100009612
申请日：2010-02-02
Applicant: 한국과학기술원
IPC: H04B10/071 , H04B10/25
Abstract: 광통신 시스템에서는, 데이터로 변조된 광신호가 광 송신기로부터 광섬유 전송 링크를 통해 전송된다. 본 발명은 광신호에 중첩된 의사랜덤잡음 신호를 이용한 상관 감지에 기초하여 광섬유 전송 링크를 따라서 분사도 분포를 측정하여 광 전송 시스템의 인서비스(in-service) 모니터링을 하는 방법 및 장치를 제공한다.
Abstract translation: 在光通信系统中，用数据调制的光信号通过光纤传输链路从光发射机发射。 本发明提供了一种用于通过使用叠加在光信号上的伪随机噪声信号进行相关检测来测量沿光纤传输链路的喷射分布的光传输系统的在线监测方法和装置 。
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公开(公告)号：KR101003028B1
公开(公告)日：2010-12-21
申请号：KR1020090068986
申请日：2009-07-28
Applicant: 한국과학기술원
CPC classification number: H04B10/616
Abstract: PURPOSE: A coherent receives is provided to drastically alleviate the requirement condition of a optical hybrid by compensating deformity of optical hybrid, thereby improving the economic efficiency of the optical hybrid. CONSTITUTION: Optical hybrids(110) combines output of local oscillator and a receiving signal. An optical detector(200) converts the outputted light of optical hybrids into an analog electric signal. An A/D converter(300) converts the analog electric signal into a digital signal. By software, a digital signal processor(400) compensates influence of deformity of the optical hybrid about generating a In-Phase/ Quadrature signal.
Abstract translation: 目的：提供一致的接收，通过补偿光混合的畸变，大大减轻光混合的需求条件，从而提高光混合的经济效益。 构成：光混合器（110）组合本地振荡器的输出和接收信号。 光检测器（200）将光混合的输出光转换为模拟电信号。 A / D转换器（300）将模拟电信号转换为数字信号。 通过软件，数字信号处理器（400）补偿光学混合物的畸变对产生同相/正交信号的影响。
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9.发明授权
公开(公告)号：KR101101859B1
公开(公告)日：2012-01-05
申请号：KR1020100068068
申请日：2010-07-14
Applicant: 한국과학기술원
IPC: H04B10/035 , H04B10/2581 , H04J14/02
Abstract: PURPOSE: An optical loop-back system and wavelength division multiple passive optical network using the same are provided to stably maintain the polarization light of a signal in a receiver by reducing the change of polarized light by an optical cable. CONSTITUTION: A 45 degree polarization unit(122) is installed in a subscriber device(120). The 45 degree polarization unit offsets the polarization change of an upward signal. The 45 degree polarization unit is a Faraday rotator. A reflective optical modulator(121) is a reflective semiconductor optical amplifier, a laser diode, and a reflective electronic absorption modulator. The 45 degree polarization unit is installed in the front side of the reflective optical convertor.
Abstract translation: 目的：提供一种使用其的光回环系统和波分多无源光网络，以通过减少光缆的偏振光的变化来稳定地维持接收机中信号的偏振光。 构成：45度偏振单元（122）安装在用户设备（120）中。 45度偏振单元抵消向上信号的偏振变化。 45度偏振单元是法拉第旋转器。 反射式光学调制器（121）是反射半导体光放大器，激光二极管和反射型电子吸收调制器。 45度偏振单元安装在反射光学转换器的正面。
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10.发明公开
公开(公告)号：KR1020110132776A
公开(公告)日：2011-12-09
申请号：KR1020100052304
申请日：2010-06-03
Applicant: 한국과학기술원
IPC: H04B10/2581
Abstract: PURPOSE: A transmission loss control method for increasing transmission range is provided to increase the transmission range which is capable of using a transmission loss control from a local base station to a subscriber device. CONSTITUTION: A transmission loss device is embedded in order to generate additional loss according to the transmission distance of a subscriber device from the RN to increase transmission distance range from an RN(Remote Node)(130). The transmission loss device is installed between the RN and the subscriber device in order to exist in transmission loss of the subscriber device from the RN. The transmission loss device controls the loss of RN and the subscriber device.
Abstract translation: 目的：提供用于增加传输范围的传输损耗控制方法，以增加能够使用从本地基站到用户设备的传输损失控制的传输范围。 构成：嵌入传输损耗设备，以便根据用户设备从RN的传输距离产生额外的丢失，以增加来自RN（远程节点）（130）的传输距离范围。 传输损耗设备安装在RN和用户设备之间，以便从RN接收用户设备的传输丢失。 传输丢失设备控制RN和用户设备的丢失。
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