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    • 4. 发明授权
    • Distributed feedback (DFB) quantum dot laser structure
    • 分布式反馈(DFB)量子点激光器结构
    • US07551662B2
    • 2009-06-23
    • US12096351
    • 2006-11-24
    • Dae Kon OhJin Hong LeeJin Soo KimSung Ui HongByung Seok ChoiHyun Soo KimSung Bock Kim
    • Dae Kon OhJin Hong LeeJin Soo KimSung Ui HongByung Seok ChoiHyun Soo KimSung Bock Kim
    • H01H3/08H01S5/00
    • H01S5/12B82Y20/00H01S5/0425H01S5/3412H01S5/34306H01S2301/185
    • A distributed feedback (DFB) quantum dot semiconductor laser structure is provided. The DFB quantum dot semi-conductor laser structure includes: a first clad layer formed on a lower electrode; an optical waveguide (WG) formed on the first clad layer; a grating structure layer formed on the optical WG and including a plurality of periodically disposed gratings; a first separate confinement hetero (SCH) layer formed on the grating structure layer; an active layer formed on the first SCH layer and including at least a quantum dot; a second SCH layer formed on the active layer; a second clad layer formed on the second SCH layer; an ohmic layer formed on the second clad layer; and an upper electrode formed on the ohmic layer. Accordingly, an optical WG is disposed on the opposite side of the active layer from the grating structure layer, thereby increasing single optical mode efficiency. And, an asymmetric multi-electrode structure is used for applying current, thereby maximizing purity and efficiency of the single mode semiconductor laser structure.
    • 提供了分布式反馈(DFB)量子点半导体激光器结构。 DFB量子点半导体激光器结构包括:形成在下电极上的第一覆层; 形成在第一包层上的光波导(WG); 光栅结构层,形成在光学WG上并且包括多个周期性布置的光栅; 形成在所述光栅结构层上的第一分离限制性杂(SCH)层; 形成在第一SCH层上并包括至少一个量子点的有源层; 形成在所述有源层上的第二SCH层; 形成在第二SCH层上的第二覆层; 形成在所述第二覆盖层上的欧姆层; 和形成在欧姆层上的上电极。 因此,光学WG设置在有源层与光栅结构层的相反侧,从而提高单一光模式效率。 并且,使用非对称多电极结构来施加电流,从而最大化单模半导体激光器结构的纯度和效率。
    • 5. 发明申请
    • Distributed Feedback (Dfb) Quantum Dot Laser Structure
    • 分布式反馈(Dfb)量子点激光器结构
    • US20080279243A1
    • 2008-11-13
    • US12096351
    • 2006-11-24
    • Dae Kon OHJin Hong LeeJin Soo KimSung Ui HongByung Seok ChoiHyun Soo KimSung Bock Kim
    • Dae Kon OHJin Hong LeeJin Soo KimSung Ui HongByung Seok ChoiHyun Soo KimSung Bock Kim
    • H01S5/00
    • H01S5/12B82Y20/00H01S5/0425H01S5/3412H01S5/34306H01S2301/185
    • A distributed feedback (DFB) quantum dot semiconductor laser structure is provided. The DFB quantum dot semi-conductor laser structure includes: a first clad layer formed on a lower electrode; an optical waveguide (WG) formed on the first clad layer; a grating structure layer formed on the optical WG and including a plurality of periodically disposed gratings; a first separate confinement hetero (SCH) layer formed on the grating structure layer; an active layer formed on the first SCH layer and including at least a quantum dot; a second SCH layer formed on the active layer; a second clad layer formed on the second SCH layer; an ohmic layer formed on the second clad layer; and an upper electrode formed on the ohmic layer. Accordingly, an optical WG is disposed on the opposite side of the active layer from the grating structure layer, thereby increasing single optical mode efficiency. And, an asymmetric multi-electrode structure is used for applying current, thereby maximizing purity and efficiency of the single mode semiconductor laser structure.
    • 提供了分布式反馈(DFB)量子点半导体激光器结构。 DFB量子点半导体激光器结构包括:形成在下电极上的第一覆层; 形成在第一包层上的光波导(WG); 光栅结构层,形成在光学WG上并且包括多个周期性布置的光栅; 形成在所述光栅结构层上的第一分离限制性杂(SCH)层; 形成在第一SCH层上并包括至少一个量子点的有源层; 形成在所述有源层上的第二SCH层; 形成在第二SCH层上的第二覆层; 形成在所述第二覆盖层上的欧姆层; 和形成在欧姆层上的上电极。 因此,光学WG设置在有源层与光栅结构层的相反侧,从而提高单一光模式效率。 并且,使用非对称多电极结构来施加电流,从而最大化单模半导体激光器结构的纯度和效率。
    • 6. 发明授权
    • Bidirectional transceiver and method for driving the same
    • 双向收发器及其驱动方法
    • US07248616B2
    • 2007-07-24
    • US10714016
    • 2003-11-14
    • Sung Bock KimEundeok SimKi Soo Kim
    • Sung Bock KimEundeok SimKi Soo Kim
    • H01S3/08
    • H04B10/40
    • There are provided a bi-directional transceiver module and a method for driving the same. The bi-directional transceiver module includes a 1.3 μm Distributed Bragg Reflection Laser Diode (DBR LD) including an active layer which performs light-emission in response to a light at 1.3 μm and a DBR mirror formed near the active layer. The DBR mirror is formed to prevent an upstream signal emerging from the 1.3 μm DBR LD from being deleted by a PD. A monitoring PD and a PD for detecting an optical signal are integrated and mounted behind the DBR mirror using a butt-joint method. The 1.3 μm DBR LD, the monitoring PD, and the PD for detecting the optical signal are electrically isolated by insulated areas. To drive the bi-directional transceiver module, a forward bias (+) is applied to a p-electrode formed on the 1.3 μm DBR LD, a backward bias (−) is applied to p-electrodes formed on the monitoring PD and the PD for detecting the optical signal, and a n-electrode as a common electrode is grounded.
    • 提供了双向收发器模块及其驱动方法。 双向收发器模块包括1.3μm分布布拉格反射激光二极管(DBR LD),其包括响应于1.3μm的光执行发光的有源层和在有源层附近形成的DBR镜。 DBR镜被形成为防止从1.3mum DBR LD出现的上行信号被PD删除。 用于检测光信号的监控PD和PD集成并使用对接方法安装在DBR镜后面。 1.3mum DBR LD,监控PD和用于检测光信号的PD通过绝缘区域进行电隔离。 为了驱动双向收发器模块,正向偏压(+)被施加到形成在1.3mum DBR LD上的p电极,反向偏压( - )施加到形成在监测PD和PD上的p电极 用于检测光信号,并且作为公共电极的n电极接地。
    • 8. 发明授权
    • Electroabsorption duplexer
    • 电吸收双工器
    • US07583869B2
    • 2009-09-01
    • US11451743
    • 2006-06-13
    • Young Shik KangJe Ha KimSung Bock KimYong Duck ChungKwang Seong Choi
    • Young Shik KangJe Ha KimSung Bock KimYong Duck ChungKwang Seong Choi
    • G02B6/12
    • H01S5/026H01S5/0262H01S5/0265H01S5/1014H01S5/22H01S5/50
    • An electroabsorption (EA) duplexer in which an optical amplifier, a photodetector, and an optical modulator are monolithically integrated to obtain a high radio frequency (RF) gain in radio-over fiber (RoF) link optical transmission technology is provided. The EA duplexer includes a substrate, a separation area, an optical detection/modulation unit, and an optical amplification unit. The separation area includes a first epitaxial layer formed of at least one material layer on the substrate. The first epitaxial layer functions as a first optical waveguide. The optical detection/modulation unit includes a second epitaxial layer formed of at least one material layer on the first epitaxial layer to detect and modulate an optical signal. The second epitaxial layer functions as a second optical waveguide. The optical amplification unit includes the second optical waveguide and a third epitaxial layer formed of at least one material layer on the second epitaxial layer to amplify an optical signal. The third epitaxial layer functions as a third optical waveguide. The optical amplification unit is electrically separated from the optical detection/modulation unit by the separation area and is disposed on at least one side of the optical detection/modulation unit.
    • 提供了其中光放大器,光电检测器和光调制器被单片集成以获得无线电光纤(RoF)链路光传输技术中的高射频(RF)增益的电吸收(EA)双工器。 EA双工器包括基板,分离区,光检测/调制单元和光放大单元。 分离区域包括由衬底上的至少一个材料层形成的第一外延层。 第一外延层用作第一光波导。 光检测/调制单元包括由第一外延层上的至少一个材料层形成的第二外延层,以检测和调制光信号。 第二外延层用作第二光波导。 光放大单元包括第二光波导和由第二外延层上的至少一个材料层形成的第三外延层,以放大光信号。 第三外延层用作第三光波导。 光放大单元通过分离区域与光检测/调制单元电分离,并设置在光检测/调制单元的至少一侧。