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    Optical deflector
    3.
    发明授权
    Optical deflector 失效
    光学偏转器

    公开(公告)号：US07248415B2

    公开(公告)日：2007-07-24

    申请号：US11237043

    申请日：2005-09-28

    Applicant: Oh Kee Kwon ,  Kang Ho Kim ,  Hyun Soo Kim ,  Jong Hoi Kim ,  Kwang Ryong Oh

    Inventor： Oh Kee Kwon ,  Kang Ho Kim ,  Hyun Soo Kim ,  Jong Hoi Kim ,  Kwang Ryong Oh

    IPC: G02B3/00 ,  G02B5/04 ,  G02F1/295

    CPC classification number: G02B27/095 ,  G02B19/0009 ,  G02B19/0052 ,  G02B26/0875 ,  G02B27/0977 ,  G02B2006/12078 ,  G02B2006/12104 ,  G02B2006/12145 ,  G02F1/295

    Abstract: Provided is an optical deflector for deflecting radiation beams. The optical deflector includes: a peripheral region having a first effective refractive index; and a deflection pattern region having a predetermined shape and a second effective refractive index, wherein the second effective refractive index differs from the first effective refractive index. Here, due to the deflection pattern region having the predetermined shape, the radiation beams are deflected in a direction starting from a certain point. By using the optical deflector, the locus of a light source can be designed in one of various forms, such as a straight line, a circle, an ellipse, or a parabola.

    Abstract translation: 提供了用于偏转辐射束的光学偏转器。 光学偏转器包括：具有第一有效折射率的周边区域; 以及具有预定形状和第二有效折射率的偏转图案区域，其中所述第二有效折射率与所述第一有效折射率不同。 这里，由于具有预定形状的偏转图案区域，辐射束在从某一点开始的方向上偏转。 通过使用光学偏转器，光源的轨迹可以被设计成各种形式之一，例如直线，圆形，椭圆形或抛物线。

    Wavelength tunable light source integrated with optical amplifier, beam steering unit, and concave diffraction grating
    4.
    发明授权
    Wavelength tunable light source integrated with optical amplifier, beam steering unit, and concave diffraction grating 失效
    波长可调光源与光放大器，光束转向单元和凹衍射光栅集成

    公开(公告)号：US07133194B1

    公开(公告)日：2006-11-07

    申请号：US11388522

    申请日：2006-03-24

    Applicant: Oh Kee Kwon ,  Kang Ho Kim ,  Kwang Ryong Oh ,  Jong Hoi Kim ,  Eun Deok Sim ,  Hyun Soo Kim

    Inventor： Oh Kee Kwon ,  Kang Ho Kim ,  Kwang Ryong Oh ,  Jong Hoi Kim ,  Eun Deok Sim ,  Hyun Soo Kim

    IPC: H01S3/13

    CPC classification number: H01S5/4062 ,  H01S5/026 ,  H01S5/0268 ,  H01S5/06243 ,  H01S5/141 ,  H01S5/4075

    Abstract: Provided is a wavelength tunable light source that can electrically tune wavelengths by monolithically integrating an optical amplifier, a beam steering unit, and a concave diffraction grating on a single substrate. A beam is deflected by the beam steering unit when an electrical signal is applied to two electrodes installed in the beam steering unit to be incident on the diffraction grating, and then diffracted by the diffraction grating according to the incidence angle such that part of the beam with a specific wavelength is reflected, thereby achieving wavelength tuning. Since the wavelength tuning is achieved electrically, the wavelength tunable light source is structurally stable and has a rapid wavelength tuning rate.

    Abstract translation: 提供了一种波长可调光源，其可以通过在单个基板上单片集成光放大器，光束转向单元和凹衍射光栅来电调谐波长。 当电信号被施加到安装在光束转向单元中的两个电极入射到衍射光栅上时，光束被光束转向单元偏转，然后根据入射角被衍射光栅衍射，使得光束的一部分 反射特定波长，从而实现波长调谐。 由于波长调谐是电气实现的，波长可调光源在结构上是稳定的并且具有快速的波长调谐率。

    Frequency-tunable terahertz light source device
    5.
    发明授权
    Frequency-tunable terahertz light source device 失效
    频率可调太赫兹光源装置

    公开(公告)号：US07782909B2

    公开(公告)日：2010-08-24

    申请号：US12192527

    申请日：2008-08-15

    Applicant: Kwang Ryong Oh ,  Jong Hoi Kim ,  Dong Churl Kim ,  Oh Kee Kwon ,  Ki Soo Kim ,  Ki Hong Yoon

    Inventor： Kwang Ryong Oh ,  Jong Hoi Kim ,  Dong Churl Kim ,  Oh Kee Kwon ,  Ki Soo Kim ,  Ki Hong Yoon

    IPC: H01S3/30

    CPC classification number: G02F1/3534 ,  G02F2203/13 ,  H01S1/02 ,  H01S5/141 ,  H01S5/4062 ,  H01S5/4087

    Abstract: Provided is a frequency-tunable terahertz light source device. The frequency-tunable terahertz light source device satisfies a Littrow diffraction condition at a wavelength and simultaneously satisfies a Littman-Metcalf diffraction condition at another wavelength using a double diffraction grating having two grating periods. Thus, oscillations simultaneously occur at the two different wavelengths, such that a terahertz wave can be stably generated by beating of the two oscillation wavelengths. In addition, the frequency-tunable terahertz light source device can readily change a frequency up to several terahertz and can be fabricated in a small size.

    Abstract translation: 提供了一种频率可调的太赫兹光源装置。 频率可调谐的太赫兹光源装置在波长处满足Littrow衍射条件，并且使用具有两个光栅周期的双衍射光栅同时满足另一个波长的Littman-Metcalf衍射条件。 因此，振荡同时发生在两个不同的波长处，使得可以通过拍摄两个振荡波长来稳定地产生太赫兹波。 此外，频率可调谐的太赫兹光源装置可以容易地将频率改变到几个太赫兹，并且可以以小尺寸制造。

    Tunable external cavity laser diode using variable optical deflector
    7.
    发明授权
    Tunable external cavity laser diode using variable optical deflector 失效
    可调谐外腔激光二极管使用可变光学偏转器

    公开(公告)号：US07212560B2

    公开(公告)日：2007-05-01

    申请号：US11029784

    申请日：2004-12-21

    Applicant: Kwang Ryong Oh ,  Oh Kee Kwon ,  Kang Ho Kim ,  Jong Hoi Kim ,  Hyun Soo Kim

    Inventor： Kwang Ryong Oh ,  Oh Kee Kwon ,  Kang Ho Kim ,  Jong Hoi Kim ,  Hyun Soo Kim

    IPC: H01S3/08 ,  H01S3/10

    CPC classification number: H01S5/141 ,  G02B6/29308 ,  G02B6/2931 ,  G02B6/29313 ,  H01S5/005 ,  H01S5/026 ,  H01S5/101 ,  H01S5/143

    Abstract: Provided is a tunable external cavity laser diode using a variable optical deflector wherein the variable optical deflector, in which a refractive index varies according to an electrical signal, is arranged in a triangular shape between a concave diffraction grating and a reflective mirror. Since a resonant frequency is changed using the electrical signal rather than the mechanical movement, the stable operation and continuous high-speed tenability may be enabled. In addition, when the tunable external cavity laser diode according to the present invention is implemented in an InP/InGaAsP/InP slab waveguide, a variable time determined by the carrier lifetime may be reduced to several nanoseconds or less, the miniaturization is enabled, and the manufacturing costs are significantly reduced due to the process simplification. Moreover, when the concave diffraction grating is designed based on a silica (or polymer) based slab waveguide, the fabrication may be performed even by a lithography process having low resolution, thereby enhancing reproducibility and uniformity of the diffraction grating, and accordingly reducing the manufacturing costs.

    Abstract translation: 提供了一种可调谐的外腔激光二极管，其使用可变光学偏转器，其中折射率根据电信号变化的可变光学偏转器在凹面衍射光栅和反射镜之间布置成三角形。 由于使用电信号而不是机械运动来改变谐振频率，因此可以实现稳定的运行和连续的高速可靠性。 此外，当根据本发明的可调谐外腔激光二极管在InP / InGaAsP / InP平板波导中实现时，由载流子寿命确定的可变时间可以减少到几纳秒或更小，可实现小型化，并且 由于过程简化，制造成本显着降低。 此外，当基于基于二氧化硅（或聚合物）的平板波导设计凹面衍射光栅时，即使通过具有低分辨率的光刻工艺也可以进行制造，从而提高衍射光栅的再现性和均匀性，并因此降低制造 费用

    Logic element employing saturable absorber
    8.
    发明授权
    Logic element employing saturable absorber 有权
    使用可饱和吸收器的逻辑元件

    公开(公告)号：US06822591B2

    公开(公告)日：2004-11-23

    申请号：US10682453

    申请日：2003-10-08

    Applicant: Hyun Soo Kim ,  Jong Hoi Kim ,  Eun Deok Sim ,  Kang Ho Kim ,  Oh Kee Kwon ,  Kwang Ryong Oh

    Inventor： Hyun Soo Kim ,  Jong Hoi Kim ,  Eun Deok Sim ,  Kang Ho Kim ,  Oh Kee Kwon ,  Kwang Ryong Oh

    IPC: H03M100

    CPC classification number: G02F3/00 ,  G02F1/3517

    Abstract: The present invention relates to all-optical OR and XOR logic elements employing saturable absorbers as optical gates. Saturable absorbers are arranged in paths of the Mach-Zehnder interferometer, respectively. If the total power of an input optical signal and a continuous wave signal is higher than a transparent input power of the saturable absorbers, the input optical signal passes through the saturable absorbers, and then the optical signals through the two paths are combined, so that it is possible to obtain the operational characteristics of the OR and XOR logic elements. According to the present invention, unlike the optical logic element using a cross-phase modulation by a semiconductor optical amplifier, phase difference depending upon the input optical power is not generated between two paths, so that it is possible to alleviate a restriction of an allowable range of the input optical power.

    Abstract translation: 本发明涉及采用可饱和吸收器作为光栅的全光学OR和异或逻辑元件。 可饱和吸收器分别布置在马赫 - 曾德干涉仪的路径上。 如果输入光信号和连续波信号的总功率高于可饱和吸收体的透明输入功率，则输入光信号通过可饱和吸收体，然后将通过两条路径的光信号合并，使得 可以获得OR和XOR逻辑元件的操作特性。根据本发明，与使用半导体光放大器的交叉相位调制的光逻辑元件不同，不产生取决于输入光功率的相位差 在两个路径之间，使得可以减轻对输入光功率的允许范围的限制。

    Superluminescent diode and method of manufacturing the same
    10.
    发明授权
    Superluminescent diode and method of manufacturing the same 有权
    超发光二极管及其制造方法

    公开(公告)号：US07599403B2

    公开(公告)日：2009-10-06

    申请号：US11635195

    申请日：2006-12-07

    Applicant: Moon Ho Park ,  Yong Soon Baek ,  Kwang Ryong Oh

    Inventor： Moon Ho Park ,  Yong Soon Baek ,  Kwang Ryong Oh

    IPC: H01S3/00 ,  H01S5/00

    CPC classification number: H01S5/0265 ,  B82Y20/00 ,  H01S5/026 ,  H01S5/0425 ,  H01S5/101 ,  H01S5/2063 ,  H01S5/2201 ,  H01S5/2224 ,  H01S5/2275 ,  H01S5/3406 ,  H01S5/34306 ,  H01S5/4006

    Abstract: A 1.55 μm SLD having a laser diode (LD) region and a semiconductor optical amplifier (SOA) region, and a method of fabricating the same, are disclosed. The SLD includes: an InP substrate having a LD region and a SOA region for amplifying light emitted from the LD region; an optical waveguide having a BRS (buried ridge strip) structure having an active layer of resonant strip pattern formed on the InP substrate and extending from the SOA region to the LD region; a first electrode formed on the active layer in the SOA region, a second electrode formed on the active layer in the LD region and electrically isolated from the first electrode; and a current blocking region interposed between the first electrode and the second electrode in order to electrically isolate the first electrode and the second electrode from each other.

    Abstract translation: 公开了具有激光二极管（LD）区域和半导体光放大器（SOA）区域的1.55μmSLD及其制造方法。 SLD包括：具有LD区域的InP衬底和用于放大从LD区域发射的光的SOA区域; 具有BRS（埋脊条）结构的光波导，其具有形成在InP衬底上并从SOA区延伸到LD区的谐振带图案的有源层; 形成在SOA区域中的有源层上的第一电极，形成在LD区域中的有源层上并与第一电极电隔离的第二电极; 以及插入在第一电极和第二电极之间的电流阻挡区域，以将第一电极和第二电极彼此电隔离。

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