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1. 发明申请

US20140003819A1 CLOUD BASE STATION IN FIXED-MOBILE CONVERGED ACCESS NETWORK AND OPERATION METHOD THEREOF 审中-公开
标题翻译：固定移动通信接入网络中的云台基站及其操作方法
公开(公告)号：US20140003819A1
公开(公告)日：2014-01-02
申请号：US13930320
申请日：2013-06-28
申请人： Electronics and Telecommunications Research Institute
发明人： Seung Hyun Cho , Seung Il Myong , Kyeong Hwan Doo , Jie Hyun Lee , Sang Soo Lee , Jong Hyun Lee
IPC分类号： H04W72/04
CPC分类号： H04W72/04 , H04L5/0007 , H04L5/0028 , H04L5/0044 , H04L5/0048 , H04L5/006 , H04L25/022 , H04L25/0228 , H04L27/2602 , H04L27/265 , H04L27/2655 , H04L27/2697 , H04L27/3405 , H04L27/3455
摘要： Disclosed is a cloud base station in an orthogonal frequency division multiplexing (OFDM)-based fixed-mobile converged access network and an operation method thereof. The cloud base station may include a physical (PHY) layer unit to perform a quadrature amplitude modulation (QAM) of a parallel signal received from a media access control (MAC) layer per subcarrier, and an optical orthogonal frequency division multiplexing (OFDM) transceiver to transform the QAM modulated subcarriers into a time domain to generate an OFDM sample per subcarrier, add a cyclic prefix (CP) and control information to for operating an enhanced radio unit (eRU) to the OFDM sample per subcarrier to generate a downstream signal, and transmit the downstream signal.
摘要翻译：公开了一种基于正交频分复用（OFDM）的固定移动融合接入网络中的云基站及其操作方法。云基站可以包括用于执行从每个子载波的媒体访问控制（MAC）层接收的并行信号的正交幅度调制（QAM）的物理（PHY）层单元，以及光学正交频分复用（OFDM）收发器将QAM调制的子载波变换成时域以产生每个子载波的OFDM样本，添加循环前缀（CP）和控制信息，以用于对每个子载波的OFDM样本操作增强型无线电单元（eRU）以生成下行信号，并发送下行信号。

2. 发明授权

US10110338B2 Apparatus and method for detecting optical signal 有权
公开(公告)号：US10110338B2
公开(公告)日：2018-10-23
申请号：US15625430
申请日：2017-06-16
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Sae-Kyoung Kang , Joon Young Huh , Joon Ki Lee , Jie Hyun Lee
IPC分类号： G02B27/10 , H04B10/43 , H04J14/02 , G02B27/14 , H04B10/27 , H04B10/572
摘要： An optical signal detecting apparatus and method. The optical signal detecting apparatus includes an optical demultiplexer configured to demultiplex an input optical signal into a first optical signal having a first band wavelength and a second optical signal having a second band wavelength, a first optical detector configured to detect the first optical signal, and a second optical detector configured to detect the second optical signal, and the optical demultiplexer, the first optical detector, and the second optical detector may be provided in a TO-CAN package.

3. 发明授权

US09397778B2 Tunable optical network unit for multi-wavelength passive optical network system and operating method thereof 有权
标题翻译：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
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Jie Hyun Lee , Heuk Park , Jyung Chan Lee , Sang Soo Lee
IPC分类号： H04B10/00 , H04J14/02 , H04J14/00
CPC分类号： H04J14/0278 , H04B10/272 , H04J14/023 , H04J14/0241
摘要： 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.
摘要翻译：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。

4. 发明申请

US20210273406A1 OPTICAL TRANSCEIVER AND METHOD OF SETTING WAVELENGTH OF OPTICAL TRANSCEIVER 有权
公开(公告)号：US20210273406A1
公开(公告)日：2021-09-02
申请号：US16907682
申请日：2020-06-22
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Jie Hyun Lee , Sae-Kyoung Kang , Joon Ki Lee , Sun Hyok Chang , Joon Young Huh
IPC分类号： H01S5/06 , H01S5/40 , H01S5/0687 , H04B10/40 , H04B10/50
摘要： An optical transceiver and a method of setting a wavelength of the optical transceiver. The optical transceiver may include a thermoelectric cooler (TEC) configured to maintain a constant operating temperature of a transmitter optical sub-assembly (TOSA) of the optical transceiver based on an installation environment of the optical transceiver, a plurality of laser diodes arranged on the top of the TEC and configured to output optical signals having different wavelengths, an optical multiplexer configured to multiplex the optical signals having different wavelengths, output through the plurality of laser diodes, and a wavelength controller configured to control the wavelengths of the optical signals output through the plurality of laser diodes such that optical outputs of the optical signals having different wavelengths, detected through the optical multiplexer, are maximized, wherein the wavelength controller may be individually arranged in one region of each of the plurality of laser diodes.

5. 发明授权

US10447405B2 Optical receiver with optical demultiplexer 有权
公开(公告)号：US10447405B2
公开(公告)日：2019-10-15
申请号：US16023145
申请日：2018-06-29
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Sae-Kyoung Kang , Joon Young Huh , Joon Ki Lee , Jie Hyun Lee
IPC分类号： H04B10/69 , H04J14/02 , H04B10/67
摘要： An optical receiver includes: an optical demultiplexer to demultiplex an optical signal in which a plurality of wavelengths is multiplexed and divide the optical signal into optical signals corresponding to the plurality of wavelengths, respectively; a reflector to change a progress direction of the divided optical signals; an optical coupling lens including, in an array form, light transmission lenses through which the divided optical signals are transmitted, respectively; a plurality of photodetectors to mount on a photodiode (PD) substrate provided on the optical coupling lens, receive the divided optical signals that are transmitted through the light transmission lenses of the optical coupling lens, respectively, and convert the received optical signals to electrical signals; and a plurality of trans impedance amplifiers provided at desired intervals to electrically connect to the plurality of photodetectors through wire bonding and amplify the received plurality of electrical signals to be a desired magnitude.

6. 发明授权

US10523333B2 Optical signal transmission apparatus for generating multi-level optical signal and method performed by the same 有权
公开(公告)号：US10523333B2
公开(公告)日：2019-12-31
申请号：US16023187
申请日：2018-06-29
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Jie Hyun Lee , Sun Hyok Chang , Joon Young Huh , Sae-Kyoung Kang , Joon Ki Lee
IPC分类号： H04B10/58 , H04B10/50
摘要： An optical signal transmission apparatus generates a multi-level optical signal from a multi-level electric signal. The optical signal transmission apparatus detects, based on a supervisory signal generated from an optical signal, an electric-to-optical (E/O) conversion characteristic of an E/O converter configured to convert an electric signal into an optical signal. For example, when the E/O converter generates a multi-level optical signal from a multi-level electric signal based on a bias signal, the optical signal transmission apparatus determines a correspondence relationship between the bias signal and the optical signal. The optical signal transmission apparatus adjusts a use range of intensities of the bias signal based on the determined correspondence relationship so that the E/O converter may linearly operate.

7. 发明授权

US09804346B2 Receptacle-collimator assembly and multi-wavelength optical receiver module 有权
公开(公告)号：US09804346B2
公开(公告)日：2017-10-31
申请号：US15010657
申请日：2016-01-29
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Sae Kyoung Kang , Joon Ki Lee , Joon Young Huh , Jie Hyun Lee
IPC分类号： G02B6/32 , G02B6/42 , G02B6/293
CPC分类号： G02B6/4206 , G02B6/29365 , G02B6/2938 , G02B6/32 , G02B6/4208 , G02B6/421 , G02B6/4215 , G02B6/4244 , G02B6/4249 , G02B6/4265 , G02B6/4292
摘要： A receptacle-collimator assembly and a multi-wavelength optical receiver module. The receptacle-collimator assembly includes a receptacle configured to receive a wavelength-multiplexed optical signal; and a collimator integrated with the receptacle and configured to generate a collimated beam signal from a multi-wavelength optical signal received from the receptacle and output the beam signal.

8. 发明授权

US10359572B2 Device and method for detecting optical signal 有权
公开(公告)号：US10359572B2
公开(公告)日：2019-07-23
申请号：US15792276
申请日：2017-10-24
申请人： Electronics and Telecommunications Research Institute
发明人： Sae-Kyoung Kang , Joon Ki Lee , Jie Hyun Lee , Joon Young Huh
IPC分类号： G02B6/42 , G02B6/293 , H04B10/67 , H04J14/02 , H04B10/27 , H04B10/572 , G02B27/14
摘要： Provided is a device and method for detecting an optical signal. The optical signal detecting device may include an optical de-multiplexer configured to de-multiplex an input optical signal to optical signals of different wavelengths; an optical coupling lens configured to allow the optical signals of different wavelengths to be incident; an optical signal reflector configured to reflect the optical signals of different wavelengths emitted from the optical couple lens; and an optical detector configured to detect the reflected optical signals of different wavelengths.

9. 发明授权

US09246628B2 Hybrid passive optical network system 有权
标题翻译：混合无源光网络系统
公开(公告)号：US09246628B2
公开(公告)日：2016-01-26
申请号：US13728089
申请日：2012-12-27
申请人： Electronics and Telecommunications Research Institute
发明人： Seung-Hyun Cho , Jie Hyun Lee , Seung Il Myong , Sang Soo Lee , Jong Hyun Lee , Eui Suk Jung , Kwang Ok Kim
IPC分类号： H04J14/02
CPC分类号： H04J14/0278 , H04J14/02 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282 , H04J14/0298 , H04J2014/0253
摘要： 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.
摘要翻译：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。

10. 发明授权

US09219567B2 Converged PON for TDMA-PON service based on OFDMA-PON 有权
标题翻译：基于OFDMA-PON的TDMA-PON业务融合PON
公开(公告)号：US09219567B2
公开(公告)日：2015-12-22
申请号：US13729638
申请日：2012-12-28
申请人： Electronics and Telecommunications Research Institute
发明人： Kwang Ok Kim , Seung-Hyun Cho , Jie Hyun Lee , Seung Il Myong , Sang Soo Lee , Jong Hyun Lee
IPC分类号： H04J14/02 , H04J4/00 , H04J14/08 , H04Q11/00
CPC分类号： H04J14/08 , H04Q11/0005 , H04Q2011/0064
摘要： 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).
摘要翻译：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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