公开(公告)号：US07012945B2

公开(公告)日：2006-03-14

申请号：US10725822

申请日：2003-12-01

Applicant: Kyung-Hyun Park ,  Young-Ahn Leem ,  Dong-Churl Kim ,  Dae-Su Yee ,  Sung-Bock Kim ,  Yong-Soon Baek

Inventor： Kyung-Hyun Park ,  Young-Ahn Leem ,  Dong-Churl Kim ,  Dae-Su Yee ,  Sung-Bock Kim ,  Yong-Soon Baek

IPC: H01S5/00

CPC classification number: H01S5/227 ,  H01S5/028 ,  H01S5/0623 ,  H01S5/06258 ,  H01S5/0658 ,  H01S5/1215 ,  H01S5/1237 ,  H01S5/2081 ,  H01S5/2226 ,  H01S5/3213 ,  H01S5/32333 ,  H01S2301/173

Abstract: A multi DFB laser diode for generating spontaneous pulses comprises first and second DFB sections each of which has a substrate including a diffraction grating, an active layer formed on the substrate, a clad layer formed on the active layer and including a refraction varying layer, and an electrode formed on the active layer; and a phase tuning section including a substrate, an active layer formed on the substrate, a clad layer formed on the active layer, and an electrode isolated from the electrode of the first and second DFB sections. The refraction varying layer in the active layer of the first DFB section has a refractive index different from that of the refraction varying layer in the active layer of the second DFB section.

Abstract translation: 用于产生自发脉冲的多DFB激光二极管包括第一和第二DFB部分，每个DFB部分具有包括衍射光栅的衬底，在衬底上形成的有源层，形成在有源层上并包括折射变化层的覆层，以及 形成在有源层上的电极; 以及相位调谐部，其包括基板，形成在所述基板上的有源层，形成在所述有源层上的覆盖层，以及与所述第一DFB部和所述第二DFB部的电极隔离的电极。 第一DFB部分的有源层中的折射变化层具有与第二DFB部分的有源层中的折射变化层的折射率不同的折射率。

公开(公告)号：US06928098B2

公开(公告)日：2005-08-09

申请号：US10632587

申请日：2003-07-31

Applicant: Dong-Churl Kim ,  Young-Ahn Leem ,  Dae-Su Yee ,  Kyung-Hyun Pakr ,  Sung-Bock Kim ,  Yong-Soon Baek ,  Eun-Deok Sim

Inventor： Dong-Churl Kim ,  Young-Ahn Leem ,  Dae-Su Yee ,  Kyung-Hyun Pakr ,  Sung-Bock Kim ,  Yong-Soon Baek ,  Eun-Deok Sim

IPC: H01S5/12 ,  H01S5/0625 ,  H01S5/065 ,  H01S5/00 ,  H01S3/08

CPC classification number: H01S5/06258 ,  H01S5/0657

Abstract: Disclosed is a high frequency optical pulse source generating stable optical pulses over a wide current range in an optical transmission system to enhance stability and reliability, the high frequency optical pulse source implementing, in one chip, a multi-section distributed feedback (DFB) laser diode with a phase control section arranged between two DFB laser diodes. By controlling the current applied to the electrode of the phase control section while applying currents to the first and second DFB sections, the present invention causes self-mode locking between the compound-cavity modes having similar threshold currents, thereby generating stable tens GHz-level optical pulses. Hence, the present invention generates optical pulses uniformly over a wide current range, thereby enhancing the stability and reliability of the element.

Abstract translation: 公开了一种在光传输系统中在宽电流范围内产生稳定的光脉冲以提高稳定性和可靠性的高频光脉冲源，高频光脉冲源在一个芯片中实现了多段分布反馈（DFB）激光器 二极管，相位控制部分布置在两个DFB激光二极管之间。 通过控制施加到相位控制部分的电极的电流，同时向第一和第二DFB部分施加电流，本发明引起具有类似阈值电流的化合物腔模式之间的自锁定，从而产生稳定的数十GHz级 光脉冲。 因此，本发明在宽电流范围内均匀地产生光脉冲，从而提高元件的稳定性和可靠性。