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    • 2. 发明公开
    • 광펄스 압축기 및 광 함수발생기, 광펄스 압축방법 및 광함수 발생방법
    • 光学脉冲压缩机和光功率发生器,光脉冲压缩方法和光功能发生方法
    • KR1020050114660A
    • 2005-12-06
    • KR1020057017323
    • 2004-03-23
    • 고쿠리츠켄큐카이하츠호진 카가쿠기쥬츠신코키코
    • 나까자와,마사타카히로오까,토시히꼬
    • H04J14/00
    • H01S3/0057G02F1/0553G02F2203/26H04B10/508
    • A small-sized, high-functionality optical pulse compressor capable of generating a low-power, high- repetition-frequency ultrashort pulse train used for ultrafast optical communication and photometry, and a simple-structure optical function generator for realizing an arbitrary time wafeform. The optical pulse compressor comprises and optical Fourier transform device (F) having an optical phase modulator (9) driven by the repetition-frequency of an input optical pulse train and a dispersive medium (8), for converting the shape of an input optical pulse frequency spectrum into its time waveform, and an optical filter (3) inserted ahead of the optical Fourier transform device (F), for reducing the spectrum width of an input optical pulse, wherein the optical Fourier transform device (F) converts a small- spectrum-width optical pulse output from the optical function generator generates an optical pulse. The optical function generator generates an optical pulse having an arbitrary time waveform by reproducing, as it is, a spectrum waveform-shaped arbitrarily by an optical filter on a time- axis by teh optical Fourier transform device (F).
    • 一种能够产生用于超快速光通信和光度测量的低功率,高重复频率超短脉冲串的小尺寸,高功能的光脉冲压缩机,以及用于实现任意时间波形的简单结构的光学函数发生器。 光脉冲压缩机包括具有由输入光脉冲串的重复频率驱动的光相位调制器(9)和色散介质(8)的光学傅里叶变换装置(F),用于转换输入光脉冲的形状 频谱到其时间波形,以及插入光傅立叶变换装置(F)前面的滤光器(3),用于降低输入光脉冲的光谱宽度,其中光傅里叶变换装置(F) 来自光学函数发生器的光谱宽度光脉冲输出产生光脉冲。 光学函数发生器通过光傅立叶变换装置(F)再现由时间轴上的滤光器任意地再现频谱波形,从而生成具有任意时间波形的光脉冲。
    • 4. 发明公开
    • 광전송 방법
    • 光传输方法和光传输设备
    • KR1020050096145A
    • 2005-10-05
    • KR1020057013435
    • 2004-01-23
    • 고쿠리츠켄큐카이하츠호진 카가쿠기쥬츠신코키코
    • 히로오까,토시히꼬나까자와,마사타까
    • H04B10/2507H04B10/2569H04B10/25
    • H04B10/25137H04B10/25133
    • To compensate a waveform distortion by using a nature that a spectral shape is perfectly retained even if all the linear distortions occur on a time-axis. An optical pulse transmitted from an optical pulse transmitter (1) via an optical fiber transmission line (2) is transmitted. An optical Fourier transformer (3) receives an optical pulse, and optically Fourier-transforms an optical pulse on a time-axis onto a frequency-axis to reproduce the frequency spectrum of an optical pulse on a time-axis by effecting switching between frequency and time, thereby compensating a waveform distortion by a linear effect on the optical fiber transmission line (2). A photodetector (4) receives an optical pulse from the optical Fourier transformer (3) and transforms this into an electrical signal to thereby obtain a pulse waveform before a transmission over the optical fiber transmission line (2).
    • 通过使用即使在时间轴上出现所有线性失真也能完全保留光谱形状的性质来补偿波形失真。 发射经由光纤传输线(2)从光脉冲发射器(1)发射的光脉冲。 光傅里叶变换器(3)接收光脉冲,并且将时间轴上的光脉冲光学傅立叶变换到频率轴上,以通过在频率和频率之间进行切换来再现时间轴上的光脉冲的频谱 从而通过对光纤传输线(2)的线性效应来补偿波形失真。 光检测器(4)从光傅里叶变换器(3)接收光脉冲,并将其转换为电信号,从而在通过光纤传输线(2)传输之前获得脉搏波形。