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公开(公告)号：KR1020040025018A
公开(公告)日：2004-03-24
申请号：KR1020020056806
申请日：2002-09-18
Applicant: 한국전자통신연구원
IPC: H04B10/00
CPC classification number: H03K5/135 , H04L7/0276
Abstract: PURPOSE: An apparatus and a method are provided to prevent the frequency of clock from being restricted by the time delay even when the phase of input data changes for packets. CONSTITUTION: An apparatus(300) comprises an edge detection unit(400) for detecting edges from input data and a first delay signal obtained by delaying the input data for a predetermined time; and a clock signal reproducing unit(410) for correcting the non-edge portion on the basis of the detected edge and the feedback signal obtained by delaying the detected edge for a predetermined time, and outputting the reproduced clock signal. The edge detection unit includes a first delay(402) for delaying the input data for a half cycle of the input data; and an XOR gate(404) for performing an XOR operation on the input data and output signal of the first delay. The clock signal reproducing unit includes a second delay(416) for delaying the input signal for the integer times of the cycle of the input data; and an OR gate(412) for performing an OR operation on the signal output from the edge detection unit and the signal output from the second delay, and outputting the reproduced clock signal.
Abstract translation: 目的：提供一种装置和方法，以防止时钟的频率受到时间延迟的限制，即使输入数据的相位相对于分组变化。 一种装置（300），包括用于检测来自输入数据的边缘的边缘检测单元（400）和通过将输入数据延迟预定时间而获得的第一延迟信号; 以及时钟信号再现单元（410），用于基于检测到的边缘校正非边缘部分和通过将检测到的边缘延迟预定时间而获得的反馈信号，并输出再现的时钟信号。 边缘检测单元包括用于将输入数据延迟半个周期的输入数据的第一延迟（402） 以及用于对输入数据执行XOR运算的XOR门（404）和第一延迟的输出信号。 时钟信号再现单元包括用于将输入信号延迟整个输入数据的周期的第二延迟（416） 以及用于对从边缘检测单元输出的信号和从第二延迟输出的信号执行或运算的OR门（412），并输出再生的时钟信号。
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公开(公告)号：KR1020030048830A
公开(公告)日：2003-06-25
申请号：KR1020010078869
申请日：2001-12-13
Applicant: 한국전자통신연구원
IPC: H04Q11/00
CPC classification number: H04Q11/0005 , H04Q2011/0075
Abstract: PURPOSE: A multidimensional OXC(Optical Cross Connect) switching system is provided to symmetrically arrange two cross connect switches, and to locate insertion/extract switches between the two switches, thereby easily receiving a link change of an optical transport network. CONSTITUTION: An optical fiber layer switching unit(310) performs a cross connect switching for an I/O optical fiber, extracts a portion of the fiber to an upper layer, and inserts an optical fiber of the upper layer. An optical wave band layer switching unit(330) performs a cross connect switching for an I/O optical wave band, obtains an optical wave band by converting the extracted optical fiber, extracts a portion of the optical wave band to the upper layer, inserts an optical wave of the upper layer, multiplexes a portion of the optical wave band to an optical fiber, and transmits the fiber to a lower layer. An optical wave layer switching unit(350) performs a cross connect switching for an I/O optical wave, obtains an optical wave, extracts a portion of the optical wave and the input optical wave to a local network(360), inserts an optical wave of the local network(360), and converts a portion of the optical wave to transmit the wave to the lower layer. The first interstage connector(320) performs an interfacing for insertion/extraction between the switching unit(310) and the switching unit(330). The second interstage connector(340) performs an interfacing for insertion/extraction between the switching unit(330) and the switching unit(350).
Abstract translation: 目的：提供多维OXC（光交叉连接）交换系统，以对称布置两个交叉连接交换机，并且在两个交换机之间定位插入/提取交换机，从而容易地接收光传输网络的链路变化。 构成：光纤层交换单元（310）对I / O光纤进行交叉连接切换，将一部分纤维提取到上层，并插入上层的光纤。 光波段层交换单元（330）对I / O光波段进行交叉连接切换，通过转换所提取的光纤获得光波段，将一部分光波段提取到上层，插入 上层的光波将光波段的一部分复用到光纤，并将光纤传输到下层。 光波层切换单元（350）对I / O光波进行交叉连接切换，得到光波，将一部分光波和输入光波提取到局域网（360），插入光 本地网络的波（360），并且转换光波的一部分以将波发送到下层。 第一级间连接器（320）执行用于在切换单元（310）和切换单元（330）之间插入/取出的接口。 第二级间连接器（340）执行用于在切换单元（330）和切换单元（350）之间插入/取出的接口。
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公开(公告)号：KR100377186B1
公开(公告)日：2003-03-28
申请号：KR1019990031781
申请日：1999-08-03
Applicant: 한국전자통신연구원
IPC: G02B6/10
Abstract: PURPOSE: A fabrication method of polymer arrayed waveguide wavelength multiplexing/demultiplexing optical element is provided to be simplify in its process by using polymer material and utilize a silicon nitride thin film as a dry etching mask, thereby reducing the insertion loss and cross talk rate of the elements. CONSTITUTION: A polymer waveguide lower clad layer(22) and a polymer waveguide core layer(24) are sequentially coated on a semiconductor substrate(20). Then, an insulation film pattern for an etching mask is formed on the resultant. Next, a portion of the polymer core layer(24) is etched to form a polymer waveguide pattern by using the insulation film pattern as a dry etching mask. Finally, a polymer waveguide upper clad layer(28) is formed on the resultant(20).
Abstract translation: 目的：提供一种聚合物阵列波导波长多路复用/多路分离光学元件的制造方法，通过使用聚合物材料并利用氮化硅薄膜作为干法蚀刻掩模来简化其工艺过程，从而降低了插入损耗和串扰率 要素。 构成：聚合物波导下包覆层（22）和聚合物波导芯层（24）依次涂覆在半导体衬底（20）上。 然后，在所得物上形成用于蚀刻掩模的绝缘膜图案。 接下来，通过使用绝缘膜图案作为干法蚀刻掩模来蚀刻聚合物芯层（24）的一部分以形成聚合物波导图案。 最后，在合成物（20）上形成聚合物波导上包覆层（28）。
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14.发明授权
公开(公告)号：KR100346780B1
公开(公告)日：2002-08-01
申请号：KR1019990029628
申请日：1999-07-21
Applicant: 한국전자통신연구원
IPC: G02B6/28
Abstract: 본발명은 GaAs 기판을이용한 InGaAs 광검출기가단일기판상에집적된구조의폴리머도파로열격자파장분할광소자및 그제작방법에관한것이다. 본발명에따른 GaAs 기판을사용한광검출기가집적된폴리머도파로열격자파장분할광소자는 1xN, Nx1 또는 NxN으로구성된입출력도파로와, 상기입력도파로를통해들어온광신호를분산시키는입력평판도파로와, 상기분산된광신호들이집속되는출력평판도파로와, 상기두 개의평판도파로사이에정렬되어신호를전달하는도파로열격자와, 상기출력도파로에집적되어상기출력도파로에서분리된각각의파장신호의광세기를검출하는광검출기를구비한다. 그리고, 본발명에서제안된 GaAs 기판을이용한폴리머도파로열격자파장분할광소자를제작하면 InGaAs 광검출기를폴리머도파로열격자파장분할광소자의출력단도파로부위에집적시킬수가있고, 폴리머광소자의잔류열응력을 Si 기판을사용하는경우에비해저감시킬수가있어, 편광의존성등의소자의성능이향상된다.
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公开(公告)号：KR100299662B1
公开(公告)日：2001-10-27
申请号：KR1019980036776
申请日：1998-09-07
Applicant: 한국전자통신연구원
IPC: H04B10/00 , H04B10/2581
Abstract: 본 발명은 파장분할 다중화(WDM) 방법을 이용한 광통신 시스템에서 필요한 광소자의 일종인 열광학 가변 파장 필터 제작방법에 관한 것으로서, 불소 치환된 폴리머 물질을 사용하여 폴리머 광도파로를 형성하고, 상기 광도파로의 유효굴절률을 조절하기 위해 상기 폴리머 광도파로 위에 열광학 가변전극을 형성하고, 열광학 가변전극을 이용하여 반사 광신호의 대역을 변환시키기 위해 상기 광도파로 내에 폴리머 브래그 격자를 집적함으로써, 통과신호의 파장대역폭이 매우 좁고 인접한 광신호와의 누화가 적으며, 열광학 특성을 이용한 파장 가변 특성에 따라 안정성이 높고 넓은 가변 범위를 제공하는 장점이 있으며, 폴리머 광도파로를 이용한 광소자 기술은 향후 저가의 광소자 제작에 매우 적합한 기술로서 경제성 및 시장성면에서 잇점을 가질 수 � ��는 효과가 있다.
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Patent Agency Ranking
公开(公告)号：KR100277696B1
公开(公告)日：2001-01-15
申请号：KR1019980050198
申请日：1998-11-23
Applicant: 한국전자통신연구원
IPC: H04B10/508 , H04B10/00
Abstract: 1. 청구범위에 기재된 발명이 속하는 기술분야
본 발명은 시간 상관을 이용한 광펄스열의 주기 조절 장치에 관한 것임.
2. 발명이 해결하고자하는 과제
본 발명은 궤환 광펄스열과 입력 광펄스열을 시간적으로 겹치지 않도록 섞은 다음 시간 상관하므로써, 입력 펄스열의 편광 의존성을 상당히 줄일 수 있는 광펄스열의 주기 조절 장치를 제공하는데 그 목적이 있다.
3. 발명의 해결방법의 요지
본 발명은, 클럭을 발생하는 클럭 발생수단; 클럭에 동기된 광펄스를 발생하는 광펄스 발생수단; 궤환되는 광펄스를 분배하고, 광펄스 발생수단으로부터 전달되는 광펄스를 분배하는 입력 광분배수단; 입력 광분배수단으로부터 전달되는 광펄스의 시간을 상관하는 시간 상관수단; 시간 상관수단의 출력 광펄스를 전달하는 광펄스 전달 처리수단; 및 광펄스 전달 처리수단으로부터 전달되는 광펄스를 분배하는 출력 광분배수단을 포함한다.
4. 발명의 중요한 용도
본 발명은 통신 시스템 등에서 광펄스열의 주파수를 분주하는데 이용됨.-
公开(公告)号：KR1020000033406A
公开(公告)日：2000-06-15
申请号：KR1019980050251
申请日：1998-11-23
Applicant: 한국전자통신연구원
IPC: G02F1/00
Abstract: PURPOSE: A method for fabricating an optical wave guide is provided by using the principle that a refractivity is increased according to diffusion of metal ions into a polymer. CONSTITUTION: A method for fabricating an optical wave guide by metal diffusion comprises a first step for depositing a polymer core layer(2) on a substrate(1) according to spin coating; a second step for depositing a metal layer(3) by using a thermal deposition unit; a third step for forming a metal layer(4) by pattering the metal layer(3) according to an expected optical wave guide; a fourth step for forming an optical wave guide(6) by heating the above-formed layers on a heat plate(5) at a predetermined temperature for a predetermined time in order to diffuse metal ions into a polymer and remove the residual metal; and a fifth step for fabricating a polymer optical wave guide by forming an upper cladding polymer thin film(7) according to spin coating. As a result, refractivity can be minutely controlled in a wide range, and a sectional size of the optical wave guide can be easily adjusted, thereby fabricating various polymer optical devices.
Abstract translation: 目的：通过使用根据金属离子扩散到聚合物中的折射率增加的原理来提供制造光波导的方法。 构成：通过金属扩散制造光波导的方法包括：根据旋涂在基底（1）上沉积聚合物芯层（2）的第一步骤; 用于通过使用热沉积单元沉积金属层（3）的第二步骤; 第三步骤，通过根据期望的光波导图形图案来形成金属层（4）; 用于通过在预定温度下将加热板（5）上的上述层加热预定时间以形成光波导（6）以便将金属离子扩散到聚合物中并除去残余金属的第四步骤; 以及通过根据旋涂形成上包层聚合物薄膜（7）来制造聚合物光波导的第五步骤。 结果，可以在宽范围内精细地控制折射率，并且可以容易地调节光波导的截面尺寸，从而制造各种聚合物光学器件。
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公开(公告)号：KR1020000018925A
公开(公告)日：2000-04-06
申请号：KR1019980036776
申请日：1998-09-07
Applicant: 한국전자통신연구원
IPC: H04B10/00 , H04B10/2581
CPC classification number: G02F1/065 , G02F1/0147 , G02F2201/307
Abstract: PURPOSE: A method for fabricating a thermo-optical variable wavelength filter is provided to control passing wavelength by using a polymer optical wave guide and a polymer brag lattice. CONSTITUTION: A method for fabricating a thermo-optical variable wavelength filter comprises the steps of forming a polymer optical wave guide on a semiconductor substrate using polymer material, forming a polymer brag lattice on the optical wave guide using O2 RIE and polymer spin coding, and forming a thermo-optical variable electrode on the polymer optical wave guide where the brag lattice is integrated.
Abstract translation: 目的：提供一种用于制造热光可变波长滤光器的方法，以通过使用聚合物光波导和聚合物布拉格格来控制通过波长。 构成：制造热光可变波长滤波器的方法包括以下步骤：使用聚合物材料在半导体衬底上形成聚合物光波导，使用O 2 RIE和聚合物自旋编码在光波导上形成聚合物布拉格晶格;以及 在聚合物光波导上形成热电可变电极，其中布满玻璃晶格一体化。
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公开(公告)号：KR100456673B1
公开(公告)日：2004-11-10
申请号：KR1020020037511
申请日：2002-06-29
Applicant: 한국전자통신연구원
IPC: H04B10/00 , H04B10/2581
Abstract: PURPOSE: An optical buffer is provided to alternately install many optical delayers and optical reflectors, and to pass light through the optical layers and the optical reflectors, then to delay light of a desired wavelength as much as desired time, thereby preventing optical packets from colliding with each other. CONSTITUTION: An optical circulator(32) has at least 3 ports, outputs light incident on the first port to the second port, and outputs light incident on the second port to the third port. Many optical reflectors(33a-33n) are connected to the second port, have different central wavelengths, reflect light of the substantially same wavelength as a self central wavelength among incident lights, and output the reflected light toward the second port. Many optical delayers(34a-34n) are installed by turns with the optical reflectors(33a-33n), and delay the light incident from each of the optical reflectors(33a-33n). An optical converter(31) converts light of an optional wavelength into central wavelengths of the optical reflectors(33a-33n), and outputs the converted light to the first port.
Abstract translation: 目的：提供光学缓冲器以交替地安装许多光学延迟器和光学反射器，并使光通过光学层和光学反射器，然后延迟期望波长的光达所需的时间，从而防止光学分组碰撞 与彼此。 构成：光环行器（32）具有至少3个端口，将入射到第一端口的光输出到第二端口，并将入射到第二端口的光输出到第三端口。 许多光学反射器（33a-33n）连接到第二端口，具有不同的中心波长，在入射光中反射与自身中心波长基本相同的波长的光，并将反射光输出到第二端口。 许多光学延迟器（34a-34n）与光学反射器（33a-33n）交替地安装，并延迟从每个光学反射器（33a-33n）入射的光。 光转换器（31）将任意波长的光转换成光学反射器（33a-33n）的中心波长，并将转换后的光输出到第一端口。
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公开(公告)号：KR100431195B1
公开(公告)日：2004-05-12
申请号：KR1020010080895
申请日：2001-12-18
Applicant: 한국전자통신연구원
IPC: H04J14/02
CPC classification number: H04B10/572 , H01S5/0687 , H01S5/4087 , H04B10/506 , H04J14/02
Abstract: Disclosed is a multiwavelength locking method and apparatus using an acousto-optic tunable filter in an optical communication system including optical transport networks, in which output wavelengths of light sources are monitored under the condition in which pilot signals are applied to the acousto-optic tunable filter, so as to lock the wavelengths of the light sources, thereby eliminating an wavelength instability of the light sources for an improvement in transmission characteristics. The acousto-optic tunable filter receives light beams of N different frequencies respectively outputted from N light sources, along with N pilot signals having different frequencies, and converts respective frequencies of beam components of the output beam corresponding to the N pilot signals, thereby outputting N frequency-converted output beams to be applied to a photo-detector. N electrical signals respectively corresponding to the frequencies of the pilot signals are outputted from the photo-detector, separated from one another while corresponding to the light sources, respectively, and then used to compensate for respective output wavelengths of the light sources, thereby enabling the corresponding light sources to output locked wavelengths, respectively.
Abstract translation: 公开了在包括光传输网络的光通信系统中使用声光可调滤波器的多波长锁定方法和设备，其中在导频信号被施加到声光可调滤波器的条件下监测光源的输出波长 ，以锁定光源的波长，从而消除了光源的波长不稳定性，从而改善了传输特性。 声光可调滤波器接收从N个光源分别输出的N个不同频率的光束以及N个不同频率的导频信号，并且将与N个导频信号对应的输出光束的光束分量的各个频率进行转换，从而输出N 频率转换的输出光束被施加到光电检测器。 分别对应于导频信号的频率的N个电信号从光检测器输出，分别与光源相对应地分开，然后用于补偿光源的各个输出波长，从而使得 相应的光源分别输出锁定的波长。
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