High frequency optical pulse source
    1.
    发明授权
    High frequency optical pulse source 有权
    高频光脉冲源

    公开(公告)号:US06928098B2

    公开(公告)日:2005-08-09

    申请号:US10632587

    申请日:2003-07-31

    CPC分类号: H01S5/06258 H01S5/0657

    摘要: 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.

    摘要翻译: 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。

    Multi DFB laser diode
    2.
    发明授权
    Multi DFB laser diode 失效
    多DFB激光二极管

    公开(公告)号:US07012945B2

    公开(公告)日:2006-03-14

    申请号:US10725822

    申请日:2003-12-01

    IPC分类号: H01S5/00

    摘要: 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.

    摘要翻译: 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。

    Self-mode locked multi-section semiconductor laser diode
    3.
    发明授权
    Self-mode locked multi-section semiconductor laser diode 失效
    自锁式多段半导体激光二极管

    公开(公告)号:US07680169B2

    公开(公告)日:2010-03-16

    申请号:US10726141

    申请日:2003-12-01

    IPC分类号: H01S5/00

    摘要: A multi-section semiconductor laser diode is disclosed. The laser diode includes a complex-coupled DFB laser section that includes a complex-coupled grating and an active structure for controlling the intensity of oscillating laser light, to oscillate laser light in a single mode, and an external cavity including a phase control section and an amplifier section, the phase control section having a passive waveguide that controls a phase variation of feedback laser light, the amplification section having an active structure that controls the strength of the feedback laser light. Currents are separately provided to the three sections to generate optical pulses with tuning range of tens of GHz. Applications include the clock recovery in the 3R regeneration of the optical communication.

    摘要翻译: 公开了一种多段半导体激光二极管。 激光二极管包括复耦DFB激光器部分,其包括复耦合光栅和用于控制振荡激光的强度,以单一模式振荡激光的有源结构,以及包括相位控制部分的外部腔和 放大器部分,相位控制部分具有控制反馈激光的相位变化的无源波导,该放大部分具有控制反馈激光强度的有源结构。 电流分别提供给三个部分,以产生具有几十GHz调谐范围的光脉冲。 应用包括在光通信的3R再生中的时钟恢复。

    Terahertz wave apparatus
    4.
    发明授权
    Terahertz wave apparatus 有权
    太赫波装置

    公开(公告)号:US08476592B2

    公开(公告)日:2013-07-02

    申请号:US12908628

    申请日:2010-10-20

    IPC分类号: G01J5/02

    摘要: Provided is a terahertz wave apparatus. The terahertz wave apparatus includes: a wavelength-fixed laser emitting a first laser light having a fixed first wavelength; a wavelength-swept laser emitting a second laser light having a tunable second wavelength; a coupler coupling the first laser light with the second laser light; and a generator converting a mixed light emitted from the coupler into a terahertz wave, wherein a frequency of the terahertz wave is continuously tunable.

    摘要翻译: 提供了一种太赫兹波装置。 太赫波装置包括:发射具有固定的第一波长的第一激光的波长固定的激光; 发射具有可调谐的第二波长的第二激光的波长扫描激光; 将所述第一激光与所述第二激光耦合的耦合器; 以及将从耦合器发射的混合光转换成太赫兹波的发生器,其中太赫兹波的频率是连续可调的。