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公开(公告)号：KR1020030044135A
公开(公告)日：2003-06-09
申请号：KR1020010074724
申请日：2001-11-28
Applicant: 한국전자통신연구원
IPC: H04B10/2507 , H04B10/2581
CPC classification number: H04B10/2507 , H04B10/2581 , H04B10/291 , H04J14/0282
Abstract: PURPOSE: A broadband optical link control apparatus is provided to restrain amplification characteristics change of an optical repeater by compensating a loss change of an optical transmission line and a loss spectrum change. CONSTITUTION: Pump lasers(211,213) with the same wavelength are coupled through polarization couplers(215,217) to obtain a high output pumping light and a gain independent on polarization. Pumping light sources of each wavelength are coupled to one optical fiber through a pump WDM coupler(218) and made incident on an optical transmission light connected to an optical connector(201) through a pump/signal WDM coupler(202), and then, the transmitting optical fiber is induced to Raman scattering. An output strength of the optical signal from the optical connector(206) is fixed by a value determined by a reference voltage(306). That is, the optical signal branched through a monitoring optical coupler(205) is converted to an electric signal, that is, a voltage, in an optical detector(301), and a difference value between the converted voltage and the reference voltage(306) is outputted from an attenuator(304), passes through an integrator(305), and is inputted to a variable optical attenuator(204). The variable optical attenuator(204) controls an attenuation rate in proportion to an output voltage of the integrator(305), so that the output strength of the optical signal transmitted to the optical connector(206) has a fixed value. A portion of the optical signal output which has passed through the pump/signal WDM coupler(202), an optical separator(203) and the optical attenuator(204) is outputted through the monitoring optical coupler(205).
Abstract translation: 目的：提供宽带光链路控制装置，通过补偿光传输线路的损耗变化和损耗频谱变化来抑制光中继器的放大特性变化。 构成：具有相同波长的泵浦激光器（211,213）通过偏振耦合器（215,217）耦合，以获得高输出泵浦光和与极化无关的增益。 每个波长的泵浦光源通过泵浦WDM耦合器（218）耦合到一个光纤，并入射到通过泵/信号WDM耦合器（202）连接到光学连接器（201）的光传输光上，然后， 发射光纤被引入拉曼散射。 来自光连接器（206）的光信号的输出强度由参考电压（306）确定的值固定。 也就是说，通过监视光耦合器（205）分支的光信号被转换成光检测器（301）中的电信号，即电压，以及转换电压和参考电压（306）之间的差值 ）从衰减器（304）输出，通过积分器（305），并被输入到可变光衰减器（204）。 可变光衰减器（204）与积分器（305）的输出电压成比例地控制衰减率，使得发送到光连接器（206）的光信号的输出强度具有固定值。 已经通过泵/信号WDM耦合器（202）的光信号输出的一部分，光分离器（203）和光衰减器（204）通过监视光耦合器（205）输出。
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公开(公告)号：KR100349672B1
公开(公告)日：2002-08-22
申请号：KR1019990053880
申请日：1999-11-30
Applicant: 한국전자통신연구원
IPC: G02F1/39
Abstract: 본발명은광증폭장치에관한것으로서, 출력포화된광증폭기에서의파장별이득특성회전현상을이용한이득평탄화된고정출력광섬유증폭장치를제공하기위하여, 입력광신호의세기변동에무관하게고정된출력을내기위한제1 광증폭수단; 상기제1 광증폭수단의입력광신호세기변동에따른파장별이득특성변화와상쇄되는파장별이득특성변화를갖도록상기고정된출력의세기를제어하기위한제어수단; 및상기제어수단에의해세기가변화된상기고정된출력을입력으로받아상기제1 광증폭수단의파장별이득특성변화와상쇄된파장별이득특성변화를갖는고정된출력을내기위한제2 광증폭수단을포함하되, 상기제어수단은, 상기제1 광증폭수단으로입력되는광신호와상기제2 광증폭수단으로입력되는광신호를입력받아, 상기제2 광증폭수단의파장별이득특성변화가상기제1 광증폭수단의파장별이득특성변화와상쇄되도록하는제어신호를발생하기위한광제어수단; 및상기광제어수단의제어신호에따라, 상기제1 광증폭수단으로부터출력되는광신호의세기를변화시켜상기제2 광증폭수단으로전달하기위한광신호세기변환수단을포함하며, 다채널광통신시스템등에이용된다.
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公开(公告)号：KR100319748B1
公开(公告)日：2002-01-09
申请号：KR1019990056220
申请日：1999-12-09
Applicant: 한국전자통신연구원
IPC: H01S3/067
CPC classification number: H01S3/067 , G02B6/2766 , G02B6/29319 , G02B6/2935 , G02B6/29358 , G02B6/29391 , H01S3/06712 , H01S3/0675 , H01S3/06791 , H01S3/10023 , H01S3/1068 , H01S3/108 , H01S2301/04
Abstract: 본발명은출력등화된광대역다채널광섬유레이저에관한것이다. 본발명은발진하는레이저의파장영역을확장하여채널수를증가시킴과동시에채널별레이저출력을균등하게만들어보다넓은파장대역의유용한다채널을제공하는광섬유레이저를제공하고자한다. 본발명은여러파장의빛이적어도하나이상의이득매질을공유하는형태의다채널광섬유레이저에있어서, 이득을제공하는이득제공수단; 및공진방향결정과, 공진기손실조절및 편광조절을통해공진된레이저를출력하는공진수단을구비하되, 상기공진수단내에설치되어, 발진하는레이저의파장영역을확장하여발진채널의개수를증가시키고, 그출력을채널별로균등화하는이득평탄화수단을포함한다. 본발명은파장분할다중광통신시스템의전송용및 성능평가용광원으로이용된다.
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公开(公告)号：KR1020010111163A
公开(公告)日：2001-12-17
申请号：KR1020000031334
申请日：2000-06-08
Applicant: 한국전자통신연구원
IPC: G02B6/02
CPC classification number: H01S3/06754 , H01S3/094003
Abstract: 잡음특성의 큰 변화없이
이득특성을 향상시킨 1530nm 파장대역의 여기광원으로 여기된 장파장대역 에르븀 첨가 광섬유 증폭기에 관한 것으로, 이를 위한 본 발명은 장파장대역의 광신호가 입력되는 입력단, 1530nm 파장대역의 여기광원을 여기시키는 여기부, 상기 여기 광원과 입력 광신호를 결합시켜주는 파장분할다중화결합기, 및 상기 여기광원에 의해 고에너지준위를 가진 반전상태에서 상기 입력 광신호를 증폭하는 에르븀첨가 광섬유를 포함하여 이루어지고, 상기 여기부는 상기 1530nm파장대역의 여기 광원이 입력신호광과 같은 방향인 순방향여기, 반대방향인 역방향여기, 순방향여기와 역방향여기를 함께 이용한 양방향여기 또는 2단 증폭구조중 어느 하나를 이용하는 것을 특징으로 한다.-
公开(公告)号：KR1020010048975A
公开(公告)日：2001-06-15
申请号：KR1019990053880
申请日：1999-11-30
Applicant: 한국전자통신연구원
IPC: G02F1/39
Abstract: PURPOSE: An optical fiber amplifying apparatus is to simplify a structure of a control circuit and reduce the number of optical taps, thereby maximizing an efficiency and a performance thereof. CONSTITUTION: The first optical amplifying unit(1001) generates a fixed output signal regardless of a strength variation of an input optical signal. A control unit(1004) controls a strength of the fixed output signal whose spectral gain profile is offset against that of the first optical amplifying unit according to the strength variation of the input optical signal. The second optical amplifying unit(1002) receives the output signal of the control unit and generates a fixed output signal whose spectral gain profile is offset against that of the first optical amplifying unit. The first optical amplifying unit and the second optical amplifying unit are operated under an output saturation state.
Abstract translation: 目的：光纤放大装置简化了控制电路的结构，减少了光学抽头的数量，从而使效率和性能最大化。 构成：无论输入光信号的强度变化如何，第一光放大单元（1001）产生固定输出信号。 控制单元（1004）根据输入光信号的强度变化来控制其频谱增益曲线偏离第一光放大单元的固定输出信号的强度。 第二光放大单元（1002）接收控制单元的输出信号，并产生固定的输出信号，其频谱增益曲线偏离第一光放大单元。 第一光放大单元和第二光放大单元在输出饱和状态下工作。
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