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The experimental and theoretical investigation of the generation of an ultra broadband optical pulse in a microstructure fiber

微结构光纤中超宽带光脉冲产生的实验和理论研究

基本信息

批准号：
15560034
负责人：
KARASAWA Naoki
金额：
$ 2.18万
依托单位：
Chitose Institute of Science and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

The aims of this project were 1)the generation of an ultra broadband optical pulse in a microstructure optical fiber by the use of induced-phase modulation and 2)the comparison between theory and experiment to understand the mechanism of the spectral modulations in a microstructure fiber. The research results are summarized as follows.1)The phase and amplitude of an ultra broadband optical pulse generated by propagating an optical pulse from a Ti : Sapphire laser oscillator in a taper fiber were measured by a cross-correlation frequency-resolved optical gating apparatus. The experimental results were compared with calculations obtained by a finite-difference in the frequency domain method. These results agreed well and the calculations showed that a fundamental soliton pulse was generated in a taper fiber by the fission of the optical pulse inputted in a fiber.2)The spectral broadening of a second-harmonic pulse was observed when a fundamental pulse and its second-harmonic pulse from a Ti : Sapphire laser oscillator were co-propagated in a microstructure fiber by the use of induced-phase modulation. Especially, the generation of an ultra broadband pulse from 380 nm to 1000 nm was observed when these pulses were co-propagated in a 1.0-μm-core-diameter photonic crystal fiber. The dependence of the spectral broadenings on the delay times of the second-harmonic pulse was measured and compared with calculations. From the calculations, it was found that the timings of the generation of a fundamental soliton pulse created by the fission of a fundamental pulse and the spectral peak position of the fundamental soliton pulse were strongly modified by the delay times of the second-harmonic pulse.

本项目的目标是1)利用感应相位调制在微结构光纤中产生超宽带光脉冲，2)通过理论和实验比较了解微结构光纤中光谱调制的机理。1)利用互相关频率分辨光学选通装置测量了钛宝石激光振荡器在锥形光纤中传输光脉冲产生的超宽带光脉冲的相位和幅度。实验结果与频域有限差分法的计算结果进行了比较。这些结果符合得很好，计算表明，在锥形光纤中，由于输入光纤中的光脉冲的分裂，产生了基波孤子脉冲。2)利用感应相位调制，观察到来自钛宝石激光振荡器的基波脉冲及其二次谐波脉冲在微结构光纤中共传输时，二次谐波脉冲的频谱展宽。特别是当这些脉冲在1μm芯直径的光子晶体光纤中共同传输时，观察到了从380 nm到1000 nm的超宽带脉冲的产生。测量了光谱展宽与二次谐波脉冲延迟时间的关系，并与计算结果进行了比较。通过计算发现，基波脉冲裂变产生基波脉冲的时间和基波脉冲的谱峰位置受到二次谐波脉冲延迟时间的强烈影响。

项目成果

期刊论文数量（22）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Phase and amplitude comparison between experiment and calculation of ultrabroadband pulses generated in a taper fiber

锥形光纤中产生的超宽带脉冲的实验与计算的相位和幅度比较

DOI：
发表时间：
2005
期刊：
IEEE Photonics Technology Letters 17・1
影响因子：
0
作者：
N.Karasawa;N.Karasawa et al.;N.Karasawa;N.Karasawa;N.Karasawa;N.Karasawa et al.;N.Karasawa et al.;N.Karasawa
通讯作者：
N.Karasawa

Soliton-effect optical pulse compression in a microstructure fiber

微结构光纤中的孤子效应光脉冲压缩

DOI：
发表时间：
2005
期刊：
Novel Photonics and Media Technologies
影响因子：
0
作者：
N.Karasawa;N.Karasawa et al.;N.Karasawa;N.Karasawa;N.Karasawa;N.Karasawa et al.;N.Karasawa et al.;N.Karasawa;N.Karasawa
通讯作者：
N.Karasawa

Phase and amplitude comparison between experiment and calculation of Ultrabroad-band pulses generated in a taper fiber

锥形光纤中产生的超宽带脉冲的实验与计算的相位和幅度比较