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1.发明授权Tunable optical network unit for multi-wavelength passive optical network system and operating method thereof 有权用于多波长无源光网络系统的可调光网络单元及其操作方法公开(公告)号：US09397778B2
公开(公告)日：2016-07-19
申请号：US14694224
申请日：2015-04-23
Inventor： Jie Hyun Lee , Heuk Park , Jyung Chan Lee , Sang Soo Lee
CPC classification number: H04J14/0278 , H04B10/272 , H04J14/023 , H04J14/0241
Abstract: A tunable optical network unit (ONU) for a multi-wavelength passive optical network (MW PON) system and an operation method thereof are provided. The tunable ONU includes a cyclic tunable filter configured to have cyclic wavelength transmission properties that allow all wavelength channels of both a downstream signal and an upstream signal and to vary a wavelength to pass therethrough; a wavelength splitter configured to split an upstream signal wavelength band and a downstream signal wavelength band; a photodetector element configured to detect a downstream signal that is transmitted through the wavelength splitter, passing through the cyclic tunable filter which is aligned to a specific downstream signal wavelength channel; and a tunable transmitter configured to output to the wavelength transmitter an upstream signal of a wavelength channel that is determined based on an aligned downstream signal wavelength channel of the cyclic tunable filter.
Abstract translation: 提供了一种用于多波长无源光网络（MW PON）系统的可调谐光网络单元（ONU）及其操作方法。 可调谐ONU包括循环可调滤波器，其被配置为具有允许下行信号和上行信号的所有波长信道并且使波长变化通过的循环波长传输特性; 波长分离器，被配置为分离上游信号波长带和下游信号波长带; 光检测器元件，被配置为检测通过波长分离器传输的下行信号，通过与特定下行信号波长信道对准的循环可调滤波器; 以及可调谐发射器，被配置为向所述波长发射器输出基于所述循环可调滤波器的对准的下行信号波长信道确定的波长信道的上行信号。
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公开(公告)号：US09787395B2
公开(公告)日：2017-10-10
申请号：US15007739
申请日：2016-01-27
Inventor： Hwan Seok Chung , Seung Hyun Cho , Jong Hyun Lee , Sang Soo Lee , Chan Gyo Han
IPC: H04B10/079 , H04B10/2575 , H04B10/50 , H04B10/564
CPC classification number: H04B10/07953 , H04B10/25759 , H04B10/50572 , H04B10/50575 , H04B10/564
Abstract: An optical fiber cable of a mobile fronthaul system based on a radio over fiber (RoF), which includes a control apparatus for monitoring an analog optical link according to an exemplary embodiment, may be monitored. The monitoring control apparatus may include an optical signal monitor to monitor an optical signal passing through an optical fiber cable, and a system controller to control the optical signal based on a result of the monitoring. The optical signal monitor may calculate an average optical power, carrier-to-noise ratio (CNR), and a size of a nonlinear component from an electrical signal, which has been acquired from the optical signal. Then, the optical signal monitor may control the calculated average optical power, CNR, and nonlinear component.
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3.发明授权Method of tuning wavelength in time and wavelength division multiplexing-passive optical network (TWDM-PON) 有权波长调谐方法和波分复用无源光网络（TWDM-PON）公开(公告)号：US09525507B2
公开(公告)日：2016-12-20
申请号：US14740480
申请日：2015-06-16
Inventor： Han Hyub Lee , Kwang Ok Kim , Kyeong Hwan Doo , Sang Soo Lee
CPC classification number: H04J14/0246 , H04J14/025 , H04J14/0256 , H04J14/0272 , H04J14/0282 , H04J14/08 , H04Q11/0067 , H04Q2011/0064
Abstract: A method of tuning a wavelength in a TWDM-PON which has a plurality of operable channels is provided. First, a second channel is added as an operating channel of the TWDM-PON in which at least a first channel is working, and then an OLT that is providing a service to an ONU through the first channel requests the ONU to tune to the second channel. In response to receiving the request, the ONU determines whether a downstream wavelength of the second channel has been recorded thereon. According to the determination result, the ONU sends to the OLT an ACK message that indicates that the ONU is able to perform wavelength tuning and then commences wavelength tuning to the second channel, or the ONU sends to the OLT a NACK message that indicates that the ONU is unable to perform wavelength tuning.
Abstract translation: 提供了一种调整具有多个可操作通道的TWDM-PON中的波长的方法。 首先，添加第二信道作为其中至少第一信道正在工作的TWDM-PON的操作信道，然后通过第一信道向ONU提供业务的OLT请求ONU调谐到第二信道 渠道。 响应于接收到请求，ONU确定第二信道的下行波长是否已被记录在其上。 根据确定结果，ONU向OLT发送指示ONU能够执行波长调谐的ACK消息，然后开始向第二信道进行波长调谐，或者ONU向OLT发送NACK消息，该NACK消息指示 ONU无法进行波长调谐。
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公开(公告)号：US09425743B2
公开(公告)日：2016-08-23
申请号：US14565939
申请日：2014-12-10
Inventor： Young Ho Kim , Sang Soo Lee
CPC classification number: H03F1/0205 , H03F1/086 , H03F1/3205 , H03F1/3211 , H03F1/56 , H03F3/45183 , H03F3/45197 , H03F3/45748 , H03F2200/387 , H03F2200/405 , H03F2200/453 , H03F2203/45112 , H03F2203/45296 , H03F2203/45301 , H03F2203/45374 , H03F2203/45644 , H03F2203/45652 , H03F2203/45702
Abstract: Provided is a buffer amplifier. The buffer amplifier includes: a replica bias unit dividing an internal power voltage received from an internal power node to generate a bias voltage; an input unit including a first differential amplifier comparing a first differential input signal with the bias voltage to output a first internal signal and a second differential amplifier comparing a second differential input signal with the bias voltage to output a second internal signal; and an output unit including a third differential amplifier comparing the first internal signal with the second internal signal to output a first differential output signal and a second differential output signal.
Abstract translation: 提供了一个缓冲放大器。 缓冲放大器包括：复制偏置单元，分割从内部功率节点接收的内部电力电压以产生偏置电压; 输入单元，包括：第一差分放大器，将第一差分输入信号与偏置电压进行比较以输出第一内部信号;以及第二差分放大器，将第二差分输入信号与偏置电压进行比较，以输出第二内部信号; 以及输出单元，其包括将所述第一内部信号与所述第二内部信号进行比较的第三差分放大器，以输出第一差分输出信号和第二差分输出信号。
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公开(公告)号：US09720170B2
公开(公告)日：2017-08-01
申请号：US15081289
申请日：2016-03-25
Inventor： Heuk Park , Sang Soo Lee
CPC classification number: G02B6/12033 , G02B6/12007 , G02B6/12009 , G02B6/12011
Abstract: An arrayed waveguide grating device and a method for manufacturing the arrayed waveguide grating device. The arrayed waveguide grating device includes input channel waveguides formed on a substrate; output channel waveguides formed on the substrate that correspond to the input channel waveguides; and arrayed waveguides with different lengths interposed between the input channel waveguides and the output channel waveguides on the substrate while free propagation regions being formed at both ends of the arrayed waveguides, wherein the arrayed waveguides are designed so that a free spectral range (FSR) of a higher-order mode is twice or greater than a bandwidth of a region of interest (ROI).
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Patent Agency Ranking
公开(公告)号：US09634790B2
公开(公告)日：2017-04-25
申请号：US14804502
申请日：2015-07-21
Inventor： Han Hyub Lee , Sang Soo Lee
CPC classification number: H04J14/0221 , H04J14/0282 , H04Q11/0005 , H04Q11/0067 , H04Q2011/0016
Abstract: A burst-mode optical amplification apparatus and method is provided. The burst-mode optical amplification apparatus includes a gain saturation signal generator configured to generate a gain saturation signal for gain stabilization based on an incoming input optical signal; a wavelength multiplexer configured to wavelength multiplex the incoming input optical signal and the gain saturation signal; and an optical amplifier configured to amplify both the wavelength-multiplexed input optical signal and the wavelength-multiplexed gain saturation signal. The apparatus may further include a time delay module configured to synchronize the input optical signal and the gain saturation signal by delaying the transmission time of the input optical signal, taking into consideration the processing time needed by the gain saturation signal generator to generate the gain saturation signal.
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公开(公告)号：US09246628B2
公开(公告)日：2016-01-26
申请号：US13728089
申请日：2012-12-27
Inventor： Seung-Hyun Cho , Jie Hyun Lee , Seung Il Myong , Sang Soo Lee , Jong Hyun Lee , Eui Suk Jung , Kwang Ok Kim
IPC: H04J14/02
CPC classification number: H04J14/0278 , H04J14/02 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282 , H04J14/0298 , H04J2014/0253
Abstract: Provided is a hybrid passive optical network (PON) system. The hybrid PON system of wavelength division multiplexing (WDM)/time division multiplexing (TDM) may include an optical line terminal (OLT) and an optical network unit (ONU). The OLT and the ONU may transmit a signal based on wavelength reuse using a seed light source and a reflective modulator. The light source may include a seed light source having a single wavelength, two seed light sources having different wavelength bands, and a light source having a wavelength tunable characteristic.
Abstract translation: 提供了一种混合无源光网络（PON）系统。 波分复用（WDM）/时分复用（TDM）的混合PON系统可以包括光线路终端（OLT）和光网络单元（ONU）。 OLT和ONU可以使用种子光源和反射调制器来发射基于波长重用的信号。 光源可以包括具有单个波长的种子光源，具有不同波长带的两个种子光源和具有波长可调特性的光源。
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公开(公告)号：US09219567B2
公开(公告)日：2015-12-22
申请号：US13729638
申请日：2012-12-28
Inventor： Kwang Ok Kim , Seung-Hyun Cho , Jie Hyun Lee , Seung Il Myong , Sang Soo Lee , Jong Hyun Lee
CPC classification number: H04J14/08 , H04Q11/0005 , H04Q2011/0064
Abstract: A converged passive optical network (CPON) and a data transmission method are disclosed. The CPON is a combination of a time division multiple access-passive optical network (TDMA-PON) and an orthogonal frequency division multiple access-passive optical network (OFDMA-PON) and is able to dynamically controlling a bandwidth for upstream signal transmission through allocation of multiple subcarriers to each single optical network unit (ONU).
Abstract translation: 公开了一种融合无源光网络（CPON）和数据传输方法。 CPON是时分多址无源光网络（TDMA-PON）和正交频分多址无源光网络（OFDMA-PON）的组合，能够通过分配动态地控制上行信号传输的带宽 的多个子载波到每个单个光网络单元（ONU）。
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公开(公告)号：US09130675B2
公开(公告)日：2015-09-08
申请号：US13729521
申请日：2012-12-28
Inventor： Seung Hyun Cho , Jie Hyun Lee , Kwang Ok Kim , Eui Suk Jung , Seung Il Myong , Sang Soo Lee , Jong Hyun Lee
IPC: H04B10/272 , H04B10/564 , H04B10/27 , H04B17/00
CPC classification number: H04B10/27 , H04B10/272 , H04B10/564 , H04B17/103 , H04B17/15
Abstract: A modulation method of an optical modem and a signal transmission apparatus performing the method are disclosed. The modulation method of the optical modem includes an optical interface providing a signal to a light source, a photo detector receiving reflected light by an optical link when output light from the light source based on the provided signal is reflected by the optical link, the photo detector measuring and determining characteristics of the optical link using the reflected light, and the optical modem determining a power level and a modulation method for each subcarrier based on the characteristics of the optical link.
Abstract translation: 公开了一种光调制解调器的调制方法和执行该方法的信号传输装置。 光调制解调器的调制方法包括向光源提供信号的光接口，当基于提供的信号的来自光源的输出光被光链路反射时，光接收器接收由光链路反射的光的光检测器，照片 检测器使用反射光测量和确定光链路的特性，并且光调制解调器基于光链路的特性确定每个子载波的功率电平和调制方法。
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10.发明授权Board assembly for transmitting high-speed signal and method of manufacturing the same 有权用于传输高速信号的板组件及其制造方法公开(公告)号：US09532441B2
公开(公告)日：2016-12-27
申请号：US14619521
申请日：2015-02-11
Inventor： Jyung Chan Lee , Eun Gu Lee , Sil Gu Mun , Sang Soo Lee
CPC classification number: H05K1/0219 , H01P5/028 , H05K1/025 , H05K2201/0919 , H05K2201/09727 , H05K2201/09845 , H05K2201/10242 , Y10T29/49126
Abstract: A board assembly for transmitting a high-speed signal and a method of manufacturing the same. The board assembly may include a submount board, a base board, and a contact member for a signal line. The submount board may include at least one first high-speed signal line formed on the surface thereof. The base board may include the submount board on one part of the upper surface thereof, and at least second high-speed signal line on the other part of the upper surface thereof, wherein the second high-speed signal lines corresponds to the first high-speed signal lines, respectively. The contact member for the signal line may be installed on the side of the submount board, and have an upper portion contacting the first high-speed signal line and a lower portion contacting the second high-speed signal line such that the first high-speed signal line contacts the second high-speed signal line.
Abstract translation: 用于发送高速信号的电路板组件及其制造方法。 板组件可以包括副安装板，基板和用于信号线的接触构件。 副安装板可以包括形成在其表面上的至少一个第一高速信号线。 基板可以在其上表面的一部分上包括副安装板，并且在其上表面的另一部分上包括至少第二高速信号线，其中第二高速信号线对应于第一高速信号线， 速度信号线。 用于信号线的接触构件可以安装在副安装板的侧面上，并且具有接触第一高速信号线的上部和接触第二高速信号线的下部，使得第一高速信号线 信号线接触第二条高速信号线。
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