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公开(公告)号：KR100322137B1
公开(公告)日：2002-02-04
申请号：KR1019990008333
申请日：1999-03-12
Applicant: 삼성전자주식회사
IPC: G02B6/00
Abstract: 본발명은광 아이솔레이터및 이를구비한광섬유증폭기에관한것으로, 광아이솔레이터는입사되는광을편광방향에따라분리하는제1복굴절소자, 분리된광을각각소정각도로회전시키는편광회전자및 회전된광을결합하여출력하는제2복굴절소자를구비하여, 출력방향의역방향으로입사하는광의편광방향을출력방향광의편광방향과달리하여역방향으로입사하는광을통과시키지않는광 아이솔레이터에있어서, 편광회전자의후단어느곳에라도위치하여편광회전자를통과한광중소정파장영역에해당하는광을반사하는반사필터를구비함을특징으로한다. 본발명에의하면, 광아이솔레이터에파장에따라반사율이다른반사필터를삽입함으로써반사되는광이역류하는것을방지하는동시에원하는파장영역의광에손실을줄 수있다.
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公开(公告)号：KR100322125B1
公开(公告)日：2002-02-04
申请号：KR1019990000845
申请日：1999-01-14
Applicant: 삼성전자주식회사
CPC classification number: G02B6/12019 , H04J14/02
Abstract: 본발명은파장분할다중화광통신시스템에서파장분할다중화된각 채널의광신호를별도의계측기를사용하지않고그 신호품질을모니터링하여파장분할다중화된광신호를감시하는장치에관한것이다. 본배열격자도파로를이용한채널감시장치는파장분할다중화된광신호를입력받아내부의도파로의길이차이에비례하는위상차를갖게하여각 채널광신호로분리하는배열격자도파로; 각채널광신호의광세기를측정하는광세기측정부; 상기광세기측정부로부터출력된광세기를나타내는아날로그신호를디지털신호로변환하는아날로그-디지털변환부; 상기역다중화부에서입력받은상기전기신호를처리하는데이터처리부를포함하는것을특징으로하는파장분할다중광신호의채널감시장치를포함하는것을특징으로한다. 본발명에의하면, 파장분할다중화된광신호를구성하는각 채널의광신호를별도의계측기없이특성을측정할수 있을뿐만아니라전체광신호대역의스펙트럼을얻을수 있고양산이용이한구조를갖는다.
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公开(公告)号：KR100288442B1
公开(公告)日：2001-05-02
申请号：KR1019970061599
申请日：1997-11-20
Applicant: 삼성전자주식회사
IPC: G02B6/293
Abstract: PURPOSE: An gain flattened optical fiber amplifier is provided to be capable of adjusting the length of an erbium doped fiber by measuring a characteristic of each fiber using an optical coupler for separating a predetermined light signal. CONSTITUTION: The first and second isolators(200, 250) prevent an amplification efficiency of each erbium doped fiber(EDF) from being dropped by the reflecting of an amplified signal. A wavelength selective coupler(WSC)(220) couples a pumping light signal having a 980nm wavelength from a pumping light source(210) and an input light signal of a 1550nm wavelength from an input stage, and transfers the coupled signal to a single light transfer path. The first erbium doped fiber amplification measuring part(230) has the first coupler(232), the first EDF(233) and the second coupler(234), and measures a backward amplified spontaneous emission(ASE) by EDF of the first EDF(233) and the second erbium doped fiber amplification measuring part and a characteristic of an erbium doped fiber amplification considering only the first EDF(233). The second erbium doped fiber amplification measuring part(240) has the third coupler(242), and the second EDF(233) having a different gain characteristic from the first EDF(233), and measures an amplified spontaneous emission(ASE) by EDF of the second EDF(243) and a characteristic of an erbium doped fiber amplification considering only the second EDF(243).
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公开(公告)号：KR1020010010557A
公开(公告)日：2001-02-15
申请号：KR1019990029516
申请日：1999-07-21
Applicant: 삼성전자주식회사
IPC: G02B6/00
CPC classification number: H01S3/06795 , H01S3/06754
Abstract: PURPOSE: A broad band light source using a seed-beam is provided to reduce the intensity difference of an output light by raising the intensity of the output light, thereby reducing the error of measurement. CONSTITUTION: A broad band light source(200) consists of a seed-beam light source(202), a first optical isolator(208), a first optical coupler(210), a first pumping light source(212), an optical fiber with the rare-earth (214), a second optical coupler(216), a second pumping light source(218), and a second optical isolator(220). The seed-beam light source outputs a seed-beam of preset wavelength band. The first optical isolator isolates a reverse ASE(amplified spontaneous emission) output from the front end of the optical fiber with the rare-earth to the seed-beam light source, thereby preventing the distortion of the seed-beam. The first optical coupler couples the seed-beam of the seed-beam light source with an input pumping light to output the coupled light to the front end of the optical fiber. The second optical coupler outputs an input pumping light of the second pumping light source to the rear end of the optical fiber. The second optical isolator prevents the ASE from being emitted to the rear end of the optical fiber, thereby preventing the deterioration of the amplify efficiency.
Abstract translation: 目的：提供使用种子束的宽带光源，通过提高输出光的强度来减小输出光的强度差，从而降低测量误差。 构成：宽带光源（200）由种子束光源（202），第一光隔离器（208），第一光耦合器（210），第一泵浦光源（212），光纤 与稀土（214），第二光耦合器（216），第二泵浦光源（218）和第二光隔离器（220）连接。 种子束光源输出预设波长带的种子束。 第一个光隔离器将从光纤前端的反向ASE（放大的自发发射）输出与稀土类隔离到种子束光源，从而防止种子束的变形。 第一光耦合器将种子束光源的种子束与输入泵浦光耦合，以将耦合的光输出到光纤的前端。 第二光耦合器将第二泵浦光源的输入泵浦光输出到光纤的后端。 第二光隔离器防止ASE发射到光纤的后端，从而防止放大效率的劣化。
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公开(公告)号：KR1020010003479A
公开(公告)日：2001-01-15
申请号：KR1019990023777
申请日：1999-06-23
Applicant: 삼성전자주식회사
IPC: G02F1/39
CPC classification number: H04B10/294 , H01S3/06754 , H01S3/1608 , H01S2301/04
Abstract: PURPOSE: An L-band optical fiber amplifier is provided to accomplish an improved amplification efficiency and gain flatness. CONSTITUTION: An amplifier comprises an input port(202), a seed-beam coupler(204), a seed-beam light source(206), a first optical isolator(208), a first photo coupler(210), a first pumping light source(212), a rare-earth element added optical fiber(214), a second photo coupler(216), a second pumping light source(218), a second optical isolator(220), and output port(222). The pumping light sources supply pumping light to the rare-earth element added optical fiber, and the seed-beam light source outputs a seed-beam of a preset wavelength band. The seed-beam coupler is disposed between the input port and the rare-earth element added optical fiber, and couples an input signal light from the input port and the seed-beam from the seed-beam light source, and outputs the result, in forward direction, to the rare-earth element added optical fiber.
Abstract translation: 目的：提供L波段光纤放大器，以实现改进的放大效率和增益平坦度。 构成：放大器包括输入端口（202），种子束耦合器（204），种子束光源（206），第一光隔离器（208），第一光耦合器（210），第一泵浦 光源（212），添加稀土元素的光纤（214），第二光耦合器（216），第二泵浦光源（218），第二光隔离器（220）和输出端口（222）。 泵浦光源向添加稀土元素的光纤提供泵浦光，并且种子束光源输出预设波长带的种子束。 种子束耦合器设置在输入端口和添加有稀土元素的光纤之间，并且将来自输入端口的输入信号光和来自种子束光源的种子束耦合，并将结果输出到 向前方向，添加稀土元素光纤。
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Patent Agency Ranking
公开(公告)号：KR100274806B1
公开(公告)日：2001-01-15
申请号：KR1019980019034
申请日：1998-05-26
Applicant: 삼성전자주식회사
IPC: G02B6/26
Abstract: PURPOSE: A device and a method for measuring properties of a wavelength division multiplexing optical fiber amplifier are provided to quickly measure gain and noise properties of the wavelength division multiplexing optical fiber amplifier by using the plurality of variable-wavelength laser signal sources. CONSTITUTION: A plurality of variable-wavelength laser signal sources(201,202,203) have the ability to adjust the output wavelength. An optical multiplexer(212) multiplexes the output lights of the variable-wavelength laser signal sources. A wavelength division multiplexing optical fiber amplifier(218) amplifies the output lights of the optical multiplexer. A measuring device(226) is connected to one of the optical multiplexer and the wavelength division multiplexing optical fiber amplifier, and measures the intensity and wavelength of the input lights. A controlling part(228) controls the plurality of variable-wavelength laser signal sources to output the signal lights of a wavelength-band to be measured, and calculates the properties of the wavelength division multiplexing optical fiber amplifier in the wavelength-band to be measured, from the measured intensity of the output lights of the optical multiplexer and the intensity of the output lights of the wavelength division multiplexing optical fiber amplifier.
Abstract translation: 目的：提供一种用于测量波分复用光纤放大器的性能的装置和方法，以通过使用多个可变波长激光信号源来快速测量波分复用光纤放大器的增益和噪声特性。 构成：多个可变波长激光信号源（201,202,203）具有调节输出波长的能力。 光复用器（212）多路复用可变波长激光信号源的输出光。 波分复用光纤放大器（218）放大光复用器的输出光。 测量装置（226）连接到光复用器和波分复用光纤放大器之一，并测量输入光的强度和波长。 控制部（228）控制多个可变波长激光信号源，输出被测波长带的信号光，并计算待测波长带的波分复用光纤放大器的特性 ，根据光复用器的输出光的测量强度和波分复用光纤放大器的输出光的强度。
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公开(公告)号：KR1020000050763A
公开(公告)日：2000-08-05
申请号：KR1019990000845
申请日：1999-01-14
Applicant: 삼성전자주식회사
CPC classification number: G02B6/12019 , H04J14/02
Abstract: PURPOSE: An arrangement lattice wired-wave guide module is provided to measure the strength of an optical signal of a channel which constitutes the optical signal, the wave, and the rate of the optical signal to the noise and obtain a spectrum of an optical signal bandwidth. CONSTITUTION: An arrangement lattice wired-wave guide module comprises an input wired-wave guide(100), a first star coupler(110), an arrangement lattice wired-wave guide section(120), a second star coupler(130), and an optical strength measuring section(140). An optical signal is irradiated to the input wired-wave guide(100) through an optical fiber. The optical signal is distributed at the first star coupler and is irradiated to the arrangement lattice wired-wave guide section(120). The arrangement lattice wired-wave guide section(120) transits the phases of the optical signals. Then, the optical signals are inputted into the second star coupler(130). The optical strength measuring section(140) is connected to the second coupler(130).
Abstract translation: 目的：提供一种布置格式布线波导模块，用于测量构成光信号的通道的光信号强度，波信号和光信号对噪声的频率，并获得光信号的频谱 带宽。 构成：布置晶格布线波导模块包括输入布线波导（100），第一星形耦合器（110），布置格栅布线波导部分（120），第二星形耦合器（130）和 光学强度测量部分（140）。 通过光纤将光信号照射到输入有线波导（100）。 光信号分布在第一星形耦合器处，并被照射到布置格栅布线波导部分（120）。 布置格子布线波导部分（120）转换光信号的相位。 然后，将光信号输入到第二星形耦合器（130）。 光强度测量部分（140）连接到第二耦合器（130）。
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公开(公告)号：KR100258970B1
公开(公告)日：2000-06-15
申请号：KR1019980005472
申请日：1998-02-21
Applicant: 삼성전자주식회사
IPC: H04B10/291
CPC classification number: H04B10/2912 , H01S3/06758 , H01S3/06787 , H01S3/1608 , H01S3/1691 , H01S3/1693 , H01S2301/04 , H04B10/291 , H04B10/294
Abstract: PURPOSE: An EDF(Erbium Doped Fiber) amplifier is provided to use two kinds of EDFs having different gain spectrums, and to actively change the gain spectrums according to changed signal light strength or changed pump light strength. Therefore, gain smoothness is maintained. CONSTITUTION: The first EDF(Erbium Doped Fiber)(208) is added with erbium and phosphorous. The second EDF(210) is connected to one end of the first EDF(208), and added with erbium and aluminum, then has a gain spectrum slope opposite to the first EDF(208), according to density inversion of the erbium. A pumping light source(202) is connected to the other end of the first EDF(208), and excites the erbium of the first and the second EDF(208,210), then amplifies a signal light. An optical coupler couples a pumping light of the pumping light source(202) with the signal light, and outputs the coupled lights to the first EDF(208). A buffer EDF(206) connects the optical coupler with the first EDF(208), to reduce connection loss between the first EDF(208) and the optical coupler.
Abstract translation: 目的：提供EDF（铒掺杂光纤）放大器，使用具有不同增益谱的两种EDF，并根据变化的信号光强度或改变的泵浦光强度主动改变增益光谱。 因此，保持增益平滑度。 构成：第一EDF（铒掺杂光纤）（208）添加铒和磷。 第二EDF（210）连接到第一EDF（208）的一端，并且添加有铒和铝，然后根据铒的密度反转具有与第一EDF（208）相反的增益谱斜率。 泵浦光源（202）连接到第一EDF（208）的另一端，并激发第一和第二EDF（208,210）的铒，然后放大信号光。 光耦合泵浦光源（202）的泵浦光与信号光，并将耦合的光输出到第一EDF（208）。 缓冲器EDF（206）将光耦合器与第一EDF（208）连接，以减少第一EDF（208）和光耦合器之间的连接损耗。
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公开(公告)号：KR1020000013050A
公开(公告)日：2000-03-06
申请号：KR1019980031701
申请日：1998-08-04
Applicant: 삼성전자주식회사
IPC: H04J14/02 , H04B10/2581
CPC classification number: H04Q11/0005 , H04J14/0206 , H04J14/0209 , H04J14/0213 , H04Q2011/0016 , H04Q2011/0092
Abstract: PURPOSE: An optical coupling and dividing apparatus, and a wavelength division multiplex optical link including the same is provided to establish a wavelength, which each node needs, to one wavelength group, divide a corresponding wavelength group from the multiplex wavelength groups, divide the divided wavelength group by each channel, and again couple in an optical link including a node which has the optical coupling and division function. CONSTITUTION: The optical coupling and dividing apparatus includes a wavelength group divider, a channel selector(215), channel multiplexor(225) and a wavelength group multiplexor. The wavelength group divider is to divide the wavelength group to need in the node from plural channels being inputted and pass the rest. The channel selector is to divide a channel of the wavelength group outputted from the wavelength divider. The channel multiplexor has the same wavelength as a wavelength of the channel separated from the channel selector, and is to multiplex channels inputted from the area. The wavelength group multiplexor is to multiplex output wavelength groups and channels through the wavelength group divider.
Abstract translation: 目的：提供一种光耦合分配装置和包括该光耦合器的波分复用光链路，以建立每个节点需要的波长到一个波长组，将相应的波长组与多路波长组分开， 波长组，并且再次耦合在包括具有光耦合和分离功能的节点的光链路中。 构成：光耦合和分频装置包括波长组除法器，通道选择器（215），通道多路复用器（225）和波长组复用器。 波长组除法器是从输入的多个通道中将节点中需要的波长组划分，并通过其余部分。 信道选择器用于分割从波长分配器输出的波长组的信道。 信道复用器具有与从信道选择器分离的信道的波长相同的波长，并且是复用从该区域输入的信道。 波长组多路复用器是通过波长组除法器复用输出波长组和通道。
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公开(公告)号：KR100219711B1
公开(公告)日：1999-09-01
申请号：KR1019970003882
申请日：1997-02-10
Applicant: 삼성전자주식회사
IPC: G02B26/00
Abstract: 본 발명은 파장에 따라 반사율이 다른 반사체 및 필터를 이용한 광섬유증폭기에 관한 것으로서, 입사신호광을 증폭하기 위해 펌핑용 광을 인가하는 펌프광원; 입사신호광과 펌프광을 결합하는 제1WDM 커플러; 입사신호광을 증폭하고, 역방향으로는 반사된 펌프광에 의해 반사신호광를 증폭하는 광섬유증폭매질; 증폭된 신호광 및 남은 펌프광을 분리하여 출력시키고 역방향으로는 반사된 남은 펌프광과 반사신호광을 결합하는 제2WDM 커플러; 파장에 따라 다른 감쇠율로 순방향으로는 제2WDM커플러의 신호광을 감쇠시키고, 역방향으로는 반사된 신호광을 감쇠시키는 필터; 필터의 신호광과 남은 펌프광을 결합하고, 역방향으로는 반사된 남은 펌프광 및 반사신호광을 분리하여, 반사펌프광은 2WDM커플러로, 반사신호광은 필터로 출력시키는 제3WDM 커플러; 신호광은 파장에 따라 각기 다른 반사율로 반사시키며, 남은 펌프광은 전반사시키는 광섬유반사체; 및 입사신호광을 제1WDM커플러로 전달하고, 제1WDM커플러의 반사신호광을 출력하는 서큘레이터를 포함함을 특징으로 한다.
본 발명에 의하면, 파장에 따라 반사율이 다르게 코팅된 반사체 및 필터를 이용함으로써, 보다 넓은 파장범위에서 이득을 평탄화하고, 입출력단의 아이솔레이터가 필요없으며, EDF의 길이를 절반으로 줄일 수 있는 장점이 있다.
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