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1. 发明申请

US20200241226A1 OPTICAL MODULE AND SOLDER BALL BONDING STRUCTURE 审中-公开
公开(公告)号：US20200241226A1
公开(公告)日：2020-07-30
申请号：US16572089
申请日：2019-09-16
申请人： Electronics and Telecommunications Research Institute
发明人： Young-Tak HAN , Seok-Tae KIM , Jong-Hoi KIM , Sang-Ho PARK , Yongsoon BAEK , Jang-Uk SHIN , Seo-Young LEE
IPC分类号： G02B6/42 , G02B6/293 , H01L23/00
摘要： Provided is an optical module including an optical waveguide device through which multiple channel lightwaves are input and output, an optical transmission/reception unit disposed on one side of the optical waveguide device, an electronic IC disposed on one side of the optical transmission/reception unit and configured to drive the optical transmission/reception unit, a flexible printed circuit board (PCB) disposed on the optical transmission/reception unit and the electronic IC, a first solder ball between the optical transmission/reception unit and the flexible PCB and a second solder ball between the electronic IC and the flexible PCB.

2. 发明申请

US20210255385A1 WAVEGUIDE PHOTODETECTOR 有权
公开(公告)号：US20210255385A1
公开(公告)日：2021-08-19
申请号：US17173681
申请日：2021-02-11
申请人： Electronics and Telecommunications Research Institute
发明人： Joong-Seon CHOE , Duk Jun KIM , Jong-Hoi KIM , Jonghyurk PARK , Won Seok HAN
IPC分类号： G02B6/12 , G02B6/42 , G02B6/122 , H01L31/0232
摘要： Provided is a waveguide photodetector including a semiconductor substrate, a first optical waveguide and a second optical waveguide, which are sequentially laminated on the semiconductor substrate, in which each of the first optical waveguide and the second optical waveguide includes a first portion and a second portion, and the first portion extends from the second portion in a first direction parallel to a top surface of the semiconductor substrate, a refractive index matching layer disposed on the second portion of the second optical waveguide, a clad layer disposed on the refractive index matching layer, and an absorber disposed between the refractive index matching layer and the clad layer. Here, the second optical waveguide has a first conductive-type, the clad layer has a second conductive-type opposite to the first conductive-type, and the refractive index matching layer includes a first semiconductor layer that is an intrinsic semiconductor layer.

3. 发明申请

US20210044359A1 COHERENT OPTICAL RECEIVER AND FABRICATION METHOD THEREOF 有权
公开(公告)号：US20210044359A1
公开(公告)日：2021-02-11
申请号：US16846948
申请日：2020-04-13
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Seo Young LEE , Young-Tak HAN , Jong-Hoi KIM
IPC分类号： H04B10/61
摘要： Provided are a coherent optical receiver and a fabrication method thereof, the coherent optical receiver including a substrate, signal and local input waveguides extending in a first direction parallel to a top surface of the substrate and configured to receive an optical signal, a first optical circuit element including a first optical waveguide connected to the signal input waveguide and a trench provided in one side of the first optical waveguide in parallel to the first direction, a second optical circuit element including a second optical waveguide connected to the first optical waveguide, a slit crossing the second optical waveguide, and a wavelength plate inserted to the slit, and third optical circuit elements connected to the second optical circuit element, wherein the first to third optical circuit elements are monolithically integrated in the substrate.

4. 发明申请

US20140205280A1 MEASURING DEVICE AND METHOD OF MEASURING SIGNAL TRANSMISSION TIME DIFFERENCE THEREOF 有权
标题翻译：测量装置及其测量信号传输时间差异的方法
公开(公告)号：US20140205280A1
公开(公告)日：2014-07-24
申请号：US13934589
申请日：2013-07-03
申请人： Electronics and Telecommunications Research Institute
发明人： Joong-Seon CHOE , Chun Ju YOUN , Jong-Hoi KIM , Duk Jun KIM , Yong-Hwan KWON , Kwang-Seong CHOI , Eun Soo NAM
IPC分类号： H04B10/07
CPC分类号： H04B10/0779
摘要： Provided is a method of measuring signal transmission time difference of a measuring device. The measuring device according to embodiments, by measuring a skew on two optical paths through signal delays of sufficient sizes for skew measurement on the optical paths, even a skew having a minute size can be measured within a measureable range.
摘要翻译：提供了测量装置的信号传输时间差的测量方法。根据实施例的测量装置可以在可测量的范围内测量通过在光路上经过足够尺寸的信号延迟的两个光路上的偏斜，甚至具有微小尺寸的偏斜。

5. 发明申请

US20140169786A1 APPARATUS AND METHOD FOR MEASURING IQ IMBALANCE FOR OPTICAL RECEIVER 有权
标题翻译：用于测量光接收机智能不平等的装置和方法
公开(公告)号：US20140169786A1
公开(公告)日：2014-06-19
申请号：US14027445
申请日：2013-09-16
申请人： Electronics and Telecommunications Research Institute
发明人： Chun Ju YOUN , Jong-Hoi KIM , Joong-Seon CHOE , Duk Jun KIM , Yong-Hwan KWON , Eun Soo NAM
IPC分类号： H04B10/077
CPC分类号： H04B10/0731 , H04B10/613 , H04L27/223 , H04L27/364 , H04L2027/0083
摘要： Provided is an apparatus and method for measuring IQ imbalance, and in particular, is an apparatus and method for measuring IQ imbalance for an optical receiver. The apparatus for measuring IQ imbalance for an optical receiver includes a light generating unit generating optical and reference signals to provide the optical and reference signals to an optical receiver, a graph creating unit creating a Lissajous figure by using an in-phase (I) signal and a quadrature-phase (Q) signal output from the optical receiver in response to the optical and reference signals, and a calculating unit calculating IQ imbalance for the optical receiver with reference to the Lissajous figure.
摘要翻译：提供了一种用于测量IQ不平衡的装置和方法，特别是用于测量光接收机的IQ不平衡的装置和方法。用于测量光接收机的IQ不平衡的装置包括产生光学和参考信号以向光学接收器提供光学参考信号的光产生单元，通过使用同相（I）信号产生李萨诸图形的图形创建单元以及响应于光学参考信号从光学接收器输出的正交相位（Q）信号，以及计算单元，参考利萨如图来计算光学接收机的IQ不平衡。

6. 发明申请

US20130308949A1 OPTICAL ORTHOGONAL FREQUENCY DIVISION MULTIPLE MULTIPLEXING RECEIVER AND OPTICAL SIGNAL RECEIVING METHOD THEREOF 审中-公开
标题翻译：光学正交频分多路复用接收机和光信号接收方法
公开(公告)号：US20130308949A1
公开(公告)日：2013-11-21
申请号：US13950334
申请日：2013-07-25
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Chun Ju YOUN , Yong-Hwan KWON , Eun Soo NAM , Jong-Hoi KIM , Joong-Seon CHOE , Kwang-Seong CHOI
IPC分类号： H04J14/00
CPC分类号： H04J14/00 , H04B10/6971 , H04L27/2096 , H04L27/2649 , H04L27/2697 , H04L2025/03375
摘要： Provided is an optical OFDM receiver. The optical OFDM receiver receives an optical signal dependent on the nonlinearity of a transmitter. The optical OFDM receives includes an optical down converter, a nonlinearity compensator, and an OFDM demodulator. The optical down converter converts the optical signal into an electrical signal. The nonlinearity compensator filters the electrical signal, for compensating distortion which is added to the optical signal when the transmitter performs optical modulation. The OFDM demodulator demodulates the distortion-compensated electrical signal in an OFDM scheme.
摘要翻译：提供了一种光学OFDM接收机。光OFDM接收机根据发射机的非线性接收光信号。光OFDM接收包括光下变频器，非线性补偿器和OFDM解调器。光学下变频器将光信号转换成电信号。非线性补偿器对电信号进行滤波，用于补偿当发射机执行光调制时加到光信号上的失真。 OFDM解调器以OFDM方案解调失真补偿电信号。

7. 发明申请

US20210266074A1 OPTICAL RECEIVER WITH SEPARATED MAGNITUDE MODULATION AND PHASE MODULATION AND OPERATION METHOD THEREOF 有权
公开(公告)号：US20210266074A1
公开(公告)日：2021-08-26
申请号：US17185484
申请日：2021-02-25
申请人： Electronics and Telecommunications Research Institute
发明人： Jong-Hoi KIM
IPC分类号： H04B10/69 , H04B10/67
摘要： Disclosed is an optical receiver. The optical receiver includes an optical splitter that splits an external light signal to output a first light signal and a second light signal, a first amplifier that amplifies the first light signal in a linear gain section to output an amplified first light signal, a second amplifier that amplifies the second light signal in a saturation gain section to output an amplified second light signal, a polarization division hybrid that outputs an in-phase hybrid light signal and a quadrature-phase hybrid light signal, based on a reference light signal and the amplified second light signal, and an optoelectronic conversion unit that outputs an electrical signal, based on the amplified first light signal, the in-phase hybrid light signal, and the quadrature-phase hybrid light signal.

8. 发明申请

US20190219760A1 OPTICAL WAVEGUIDE STRUCTURE 审中-公开
公开(公告)号：US20190219760A1
公开(公告)日：2019-07-18
申请号：US16215416
申请日：2018-12-10
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Duk Jun KIM , Young-Ho KO , Dong-Young KIM , Jong-Hoi KIM , Yongsoon BAEK , Jung-Ho SONG , Dong Hyo LEE , Byung-Seok CHOI , Won Seok HAN
IPC分类号： G02B6/122
CPC分类号： G02B6/122 , G02B2006/12152
摘要： An optical waveguide structure includes a substrate and a core structure disposed on the substrate. The substrate includes a first waveguide region, a second waveguide region, and a transition region between the first waveguide region and the second waveguide region. The core structure includes first core segments arranged in a first direction and a second direction crossing the first direction on the transition region. The core structure includes second core segments arranged in the first direction and the second direction on the second waveguide region. The first direction and the second direction are parallel to a top surface of the substrate.

9. 发明申请

US20140147131A1 MULTI-CHANNEL PHOTORECEIVER MODULE 有权
标题翻译：多通道光电模块
公开(公告)号：US20140147131A1
公开(公告)日：2014-05-29
申请号：US13839013
申请日：2013-03-15
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人： Jong-Hoi KIM
IPC分类号： H04B10/60
CPC分类号： H04B10/61 , G02B6/12004 , G02B6/12007 , G02B6/125 , G02B6/2813
摘要： Provide an optical receiver module. The optical receiver module includes: an optical fiber array including a first optical fiber that delivers an optical signal and a second optical fiber that delivers a reference optical signal; a plate optical integrated circuit including first and second multi mode interference (MMI) optical isolators respectively receiving the optical signal and the reference optical signal through a plurality of first optical waveguides; and an optical detector array receiving two optical signals from each of the first and second MMI optical isolators through a plurality of second optical waveguides, wherein the optical detector array includes a plurality of third optical waveguides aligned to be connected to the other end of each of the plurality of second optical waveguides in one-to-one correspondence.
摘要翻译：提供光接收模块。光接收模块包括：光纤阵列，包括传送光信号的第一光纤和传送参考光信号的第二光纤; 包括通过多个第一光波导分别接收光信号和参考光信号的第一和第二多模干涉（MMI）光隔离器的平板光集成电路; 以及光学检测器阵列，其通过多个第二光波导从所述第一和第二MMI光隔离器中的每一个接收两个光信号，其中所述光检测器阵列包括多个第三光波导，所述第三光波导被对准以连接到每个的另一端所述多个第二光波导以一对一的对应关系。

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