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    • 4. 发明授权
    • Mode-locked laser and optical multi-carrier source using same
    • 锁模激光器和光学多载波源使用相同
    • US07386018B2
    • 2008-06-10
    • US10555658
    • 2005-02-03
    • Kunihiko MoriKenji SatoTakuya Ohara
    • Kunihiko MoriKenji SatoTakuya Ohara
    • H01S3/098
    • H01S5/065H01S3/005H01S3/0064H01S3/06754H01S5/06255H04B10/506H04J14/02
    • A mode-locked laser serves as a light source for stabilizing the frequency of each optical carrier and generates high-quality optical multi-carrier. The mode-locked laser is equipped with a master laser for generating master laser light; a mode-locked laser section including in an optical resonator at least a modulating section, am amplifying section, and a bandwidth limiting section for reducing mode partition noise; and a signal generating section for generating a periodic signal that serves for mode locking of the mode-locked laser section and is to be applied to the modulating section. The master laser light is input to the optical resonator of the mode-locked laser section to cause injection locking. An optical multi-carrier source is constructed by combining this mode-locked laser with a waveguided optical nonlinear medium.
    • 锁模激光器用作用于稳定每个光学载体的频率的光源,并且产生高质量的光学多载波。 锁模激光器配备有用于产生主激光的主激光器; 模式锁定激光器部分,包括至少一个调制部分的光学谐振器,am放大部分和用于减小模式分割噪声的带宽限制部分; 以及信号产生部分,用于产生用于锁模激光部分的模式锁定并将被施加到调制部分的周期信号。 主激光被输入到锁模激光器部分的光谐振器以引起注射锁定。 通过将该锁模激光器与波导光学非线性介质组合来构造光学多载波源。
    • 6. 发明授权
    • Optical clock phase-locked loop circuit
    • 光时钟锁相环电路
    • US07151897B2
    • 2006-12-19
    • US10310086
    • 2002-12-04
    • Takuya OharaHidehiko TakaraSatoki Kawanishi
    • Takuya OharaHidehiko TakaraSatoki Kawanishi
    • H04B10/00H04B10/08H04B17/00
    • H04L7/0075
    • This optical clock phase-locked loop circuit includes an oscillator 12, an optical coupler 2, an optical cross-correlation detection device 3 that outputs light containing the correlating components of two lights from the coupled light of optical coupler 2, an optical band pass filter 4 that extracts light of a wavelength that contains cross-correlating components, an optical receiver 5, a phase comparator 6 that compares the phases of the output signal of the oscillator 12 and the cross-correlation signal from the optical receiver 5, a voltage controlled oscillator 7 that changes the oscillation frequency and phase corresponding to the output of the phase comparator 6, an optical pulse generator 8 that generates a optical clock pulse containing an nth harmonic component, an optical coupler 10 that divides optical clock, and an optical modulator 11 driven by low-frequency oscillator 12 that modulates optical clock from optical coupler 10.
    • 该光时钟锁相环电路包括振荡器12,光耦合器2,光互相关检测装置3,其从光耦合器2的耦合光输出包含两个光的相关分量的光,光学带通滤波器 提取包含互相关分量的波长的光,光接收器5,比较振荡器12的输出信号的相位和来自光接收器5的互相关信号的相位比较器6,电压控制 振荡器7,其改变与相位比较器6的输出相对应的振荡频率和相位;产生包含第n次谐波分量的光时钟脉冲的光脉冲发生器8,分割光时钟的光耦合器10和光调制器11 由调制来自光耦合器10的光时钟的低频振荡器12驱动。