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公开(公告)号：KR1020160000551A
公开(公告)日：2016-01-05
申请号：KR1020140077471
申请日：2014-06-24
Applicant: (주)엠이엘 텔레콤 , 한국전자통신연구원
Abstract: 본발명은파장무의존광송신서브어셈블리에관한것이다. 본발명은씨-밴드(C-band)광대역광신호를출사하는레이저다이오드와엘-밴드(L-band)광대역광신호를출사하는레이저다이오드및 C-band와 L-band 대역파장을선텍적으로투과및 반사할수 있는광학필터를포함하는필터링수단에의하여상기각각의레이저다이오드에서출사되는광이집광렌즈를통하여한 개의광섬유로광결합이되어고밀도파장분할다중(dense wavelength division multimplexing, DWDM)광통신망에적용할수 있게된다.
Abstract translation: 本发明涉及一种与波长无关的发射机光学子组件。 本发明通过包括发射C波段宽带光信号的激光二极管的滤波单元通过聚光透镜将从每个激光二极管发射的光光学耦合到一个光纤，发射L的激光二极管 带式宽带光信号和滤波器，其选择性地发射或反射C波段和L波段波长，从而应用于密集波分复用（DWDM）光通信网络。
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公开(公告)号：KR100960110B1
公开(公告)日：2010-05-27
申请号：KR1020080060356
申请日：2008-06-25
Applicant: 한국전자통신연구원
IPC: H04B10/27 , H04B10/2581
CPC classification number: H04B10/25754 , H04J14/0204 , H04J14/0209 , H04J14/0213 , H04J14/0216 , H04J14/0232 , H04J14/025 , H04J14/028 , H04J14/0282 , H04J2014/0253
Abstract: An optical backhaul network for a wireless broadband service is provided. The optical backhaul network for a wireless broadband service includes: a plurality of optical network units for outputting an uplink optical signal having a multiplexed wavelength; an optical line termination for outputting a downlink optical signal of a single mode in order to transmit the downlink optical signal to the plurality of the optical network units in a broadcasting form; and a plurality of remote nodes for outputting a part of the downlink optical signal to the plurality of the optical network units and for outputting the uplink optical signal to the optical line termination. Therefore, one center and a plurality of access points can be efficiently connected.
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公开(公告)号：KR100922727B1
公开(公告)日：2009-10-22
申请号：KR1020070068074
申请日：2007-07-06
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/27 , H04B10/00
CPC classification number: H01S5/50 , H01S5/06812 , H04J14/02 , H04J14/0282
Abstract: 본 발명은 광파장에 비의존적인 WDM 수동형 광가입자망을 실현하기 위해서 요구되는 네트워크 구성방식 및 상하향 광통신 장치에 관한 것으로, 파장다중화 수동형 광가입자망 시스템에 있어서, 적어도 하나 이상의 씨앗광원(SL)을 이용하여 파장간격 및 중심파장이 조정된 씨앗광을 생성하는 씨앗광 생성부, 상기 씨앗광생성부로부터 상기 씨앗광을 전달받아 광가입자망의 가입자에게 하향광신호를 전송하고, 상기 가입자로부터 전송된 상향광신호를 수신하는 광선로 종단부(OLT) 및 상기 광선로 종단부로부터 수신된 하향광신호를 상향데이터를 포함하도록 변조한 상향광신호를 전송하는 광네트워크 종단부(ONU)로 구성되어, 소광비를 충분히 높일수 있게 해줌으로써 하향전송의 품질 및 신뢰도를 향상시킬 수 있고, 입력된 하향 광신호를 반도체 광증폭기 내에서 충분히 평탄화시킴으로써 상향전송의 품질 및 신뢰도를 향상시킬 수 있다.
WDM-PON, 광선로 종단 시스템 (OLT), 광네트워크 종단 시스템 (ONU), 파장 비의존 (Wavelength Independent), 다파장 광원 (MWLS), 광대역 광원 (BLS), 광파장 재사용 (Wavelength Reuse), 광신호 평탄화 (Optical Signal Flatting), 선행전류주입 (FFCI)-
公开(公告)号：KR100859713B1
公开(公告)日：2008-09-23
申请号：KR1020060071649
申请日：2006-07-28
Applicant: 한국전자통신연구원
IPC: H01S3/067
Abstract: 본 발명은 별도의 온도 제어 부품의 사용 없이 외부 온도에 무관하게 출력 광파워와 출력 파장이 일정하게 유지될 수 있는 온도 무의존성 외부공진레이저를 제공한다. 그 외부공진레이저는 반도체 증폭기; 브라그 격자(Bragg Grating)가 형성된 코어 및 상기 코어를 감싸는 클래드를 구비한 광섬유; 및 광섬유를 페룰(ferrule)에 고정하고 음의 열광학 계수를 갖는 열경화성 폴리머;를 포함하고, 브라그 격자가 형성된 부분의 코어를 감싸는 클래드의 두께가 다른 부분의 클래드보다 얇게 형성되며, 상기 열경화성 폴리머가 상기 클래드를 감싸고 있다. 본 발명의 외부공진레이저는 별도의 온도 제어 장치를 부착할 필요가 없어서, 소형 및 저가형으로 제작할 수 있기 때문에, 경제적인 WDM 광가입자망 설계에 있어서, DWDM 시스템 광원으로 유용하게 사용될 수 있다.
외부온도 무의존 광원, 외부공진레이저, thin-film 필터, 브라그 격자-
公开(公告)号：KR1020070108422A
公开(公告)日：2007-11-12
申请号：KR1020060102456
申请日：2006-10-20
Applicant: 한국전자통신연구원
IPC: H04B10/00 , H04B10/291 , H04B10/25 , H04B10/2581
CPC classification number: H01S5/50 , H01S5/06812 , H04J14/02 , H04J14/0282
Abstract: An RSOA reusing a downlink optical signal by dynamic current injection and a driving apparatus thereof are provided to adjust dynamically a current injected to the RSOA according to the size of an input optical signal and reduce the residual ER(Extinction Ratio) of the optical signal, thereby reducing the power penalty of uplink transmission and improving transmission quality. An RSOA(Reflective Semiconductor Optical Amplifier)(600) includes a reflecting surface and an optical amplifying semiconductor. The reflecting surface reflects an input optical signal. The optical amplifying semiconductor is positioned in one side of the reflecting surface. The polarity of a first signal is reverse to the polarity of the input optical signal. A second signal modulates the input optical signal reflected from the reflecting surface into an output optical signal. The first and second signals are combined and injected to the optical amplifying semiconductor.
Abstract translation: 提供通过动态电流注入重新使用下行链路光信号的RSOA及其驱动装置，以根据输入光信号的大小动态调整注入RSOA的电流，并减少光信号的残留ER（消光比） 从而降低上行传输的功率损失，提高传输质量。 RSOA（反射半导体光放大器）（600）包括反射表面和光放大半导体。 反射面反射输入光信号。 光放大半导体位于反射面的一侧。 第一信号的极性与输入光信号的极性相反。 第二信号将从反射表面反射的输入光信号调制成输出光信号。 将第一和第二信号组合并注入光放大半导体。
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Patent Agency Ranking
公开(公告)号：KR1020070104196A
公开(公告)日：2007-10-25
申请号：KR1020060096600
申请日：2006-09-29
Applicant: 한국전자통신연구원
CPC classification number: H01S5/141 , G02B6/124 , G02B6/29316 , G02B6/29395 , G02B6/4215 , H01S3/1055 , H01S5/02248 , H01S5/02446 , H01S5/0287 , H01S5/0683
Abstract: A wavelength tunable external cavity laser is provided to have stable optical coupling efficiency and oscillation characteristics by coupling a wavelength tunable waveguide Bragg-grating reflection filter and a semiconductor laser diode through an active alignment method using an additional substrate. A semiconductor laser diode(200) outputs a multi-wavelength optical signal and is mounted on a first substrate. A wavelength tunable reflection filter(103) is mounted on a second substrate, and outputs a single-wavelength optical signal using resonance of a diffraction grating, and changes the wavelength of the single-wavelength optical signal by changing a refractive index of the diffraction grating. The first substrate is a 3-5 compound semiconductor substrate. The second substrate is a silicon substrate, and the tunable reflection filter is formed with a polymer material with a negative thermo-optic coefficient and has a waveguide structure.
Abstract translation: 通过使用附加衬底的主动对准方法，通过耦合波长可调波导布拉格光栅反射滤光器和半导体激光二极管，提供波长可调外腔激光器以具有稳定的光耦合效率和振荡特性。 半导体激光二极管（200）输出多波长光信号并安装在第一基板上。 波长可调谐反射滤光器（103）安装在第二基板上，并使用衍射光栅的谐振输出单波长光信号，并且通过改变衍射光栅的折射率来改变单波长光信号的波长 。 第一衬底是3-5化合物半导体衬底。 第二衬底是硅衬底，并且可调谐反射滤光器由具有负热光系数的聚合物材料形成并具有波导结构。
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公开(公告)号：KR1020070074472A
公开(公告)日：2007-07-12
申请号：KR1020070001140
申请日：2007-01-04
Applicant: 한국전자통신연구원
IPC: H04B10/291 , H04B10/25 , H04B10/00
CPC classification number: H01S5/50 , H01S5/06812 , H04J14/02 , H04J14/0282
Abstract: A feed-forward current driver and an SOA(Semiconductor Optical Amplifier) for reusing a downstream optical signal through dynamic current injection are provided to reduce the ER(Extinction Ratio) of an inputted optical signal by dynamically adjusting the current injected to an RSOA(Reflective SOA) according to amplitude of the optical signal. Downstream optical signals from a telephone office are split through an optical coupler(601). Some of the downstream optical signals are inputted to an RSOA(600), and some of them are inputted to a dPD(data Photo Diode)(602). The light inputted to the dPD(602) is changed into current signals. A TIA(Transimpedance Amplifier)(603) amplifies the current signals and converts them into voltage signals. The voltage signals are inputted to an LA(Limiting Amplifier)(604), and they are amplified again. Some of output signals of the LA(604) are inputted to the first RF delay(605). Output signals of the RF delay(605) are inputted to an AND gate(606). Output signals of the AND gate(606) are changed into current signals through the first LDD(LD Driver)(607). Some inputted upstream data signals are inputted to the first LDD(607), and they are changed into current signals. The current signals are combined with bias current. Output signals of the first and second LDDs(607,609) are combined through a signal combiner(610), and the combined signal is injected into an RSOA(600).
Abstract translation: 提供了一种用于通过动态电流注入重新使用下行光信号的前馈电流驱动器和SOA（半导体光放大器），以通过动态调整注入RSOA的电流来减少输入光信号的ER（消光比）（反射 SOA）根据光信号的幅度。 来自电话局的下行光信号通过光耦合器（601）分离。 一些下行光信号被输入到RSOA（600），其中一些信号被输入到dPD（数据光电二极管）（602）。 输入到dPD（602）的光变为电流信号。 TIA（跨阻放大器）（603）放大电流信号并将其转换为电压信号。 电压信号输入到LA（限幅放大器）（604），并再次放大。 LA（604）的一些输出信号被输入到第一RF延迟（605）。 RF延迟（605）的输出信号被输入到与门（606）。 与门（606）的输出信号通过第一LDD（LD驱动器）（607）变为电流信号。 一些输入的上行数据信号被输入到第一LDD（607），并且它们被改变为电流信号。 电流信号与偏置电流组合。 第一和第二LDD（607,609）的输出信号通过信号组合器（610）组合，并且组合的信号被注入到RSOA（600）中。
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公开(公告)号：KR1020060039826A
公开(公告)日：2006-05-09
申请号：KR1020040089059
申请日：2004-11-03
Applicant: 한국전자통신연구원
IPC: G02B6/12
CPC classification number: G02B6/4232 , G02B6/4207 , G02B2006/12121 , H01S5/0224 , H01S5/02252 , H01S5/0226 , H01S5/1014 , H01S5/227 , H01S2301/176 , G02B2006/12128
Abstract: A hybrid type integrated optical device has a semiconductor laser mounted on a planar waveguide platform by flip-chip bonding. The optical device comprises a semiconductor laser and a planar waveguide platform. The semiconductor laser includes a first structure, which has an active region and a light emission surface formed on at least one side surface of the first structure, and a second structure, which is formed below the first structure and has upper surfaces exposed at the light emission surface of the first structure and/or to a surface opposite to the light emitting surface. The planar waveguide platform includes a substrate, a lower clad layer, a core layer, and an upper clad layer, being sequentially stacked on the substrate. The semiconductor laser is flip-chip bonded on the substrate, such that the exposed upper surfaces of the second structure contact the upper surface of the upper clad layer.
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公开(公告)号：KR101310455B1
公开(公告)日：2013-09-24
申请号：KR1020090120900
申请日：2009-12-08
Applicant: 한국전자통신연구원
IPC: H04B10/2581 , H04B10/43
CPC classification number: H04J14/0282 , H04B10/2587 , H04B10/506
Abstract: 본 발명은 씨앗 광원으로부터 수신한 씨앗광을 파장 역다중화 하는 제1 파장 다중화 장치, 및 적어도 하나의 가입자측 단말 장치로부터 상기 파장 역다중화된 씨앗광을 이용하여 생성된 상향 광신호를 수신하여 파장 역다중화 하는 제2 파장 다중화 장치를 포함하는 국사용 광장치(OLT)를 제안한다.
파장분할 다중화, 수동형 광가입자망, 씨앗 광원-
公开(公告)号：KR1020100068788A
公开(公告)日：2010-06-24
申请号：KR1020080127263
申请日：2008-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04B10/2587 , H04J14/02 , H04J14/0227 , H04J2014/0253
Abstract: PURPOSE: A seed optical module for passive optical networks is provided to apply an optical line terminal more efficiently by minimizing the loss of optical power during the process of splitting the spectrum. CONSTITUTION: A light amplifier(110) amplifies seed light. An optical wavelength filter(120) transmits broadband light, which is outputted in the opposite direction of the seed light, in periodic frequency intervals. A reflecting mirror(130) reflects spectrum-split light towards an optical wavelength filter with the optical wavelength filter. A gain flattening filter is arranged between the optical wavelength filter and the reflecting mirror. The gain flattening filter flattens the intensity of the signals which are outputted as seed light.
Abstract translation: 目的：提供一种无源光网络种子光模块，通过最大限度地减少光谱分离过程中的光功率损耗，更有效地应用光线路终端。 构成：光放大器（110）放大种子光。 光波长滤波器（120）以周期性频率间隔发射以种子光的相反方向输出的宽带光。 反射镜（130）利用光学波长滤光器将光谱分离光反射到光学波长滤光器。 在光波长滤光器和反射镜之间设置增益平坦化滤光器。 增益平坦化滤波器使作为种子光输出的信号的强度变宽。
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