Polarization-maintaining fiber pulse compressor by birefringent hollow-core photonic bandgap fiber.
Polarization-maintaining fiber pulse compressor by birefringent hollow-core photonic bandgap fiber.
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DOI：
10.1364/assp.2007.mb23
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发表时间：
2006-12
期刊：
影响因子：
3.8
通讯作者：
A. Shirakawa;M. Tanisho;K. Ueda
中科院分区：
文献类型：
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作者：
A. Shirakawa;M. Tanisho;K. Ueda
研究了空心芯光子带隙光纤的结构双折射特性，并将其作为压缩器应用于全光纤啁啾脉冲放大。在1557 nm处，两种主偏振模式之间的群双折射高达6.9x10(-4)，色散分裂高达149 ps/nm/km。通过将放大器输出发射到其中一种偏振模式，可以获得17 db的偏振消光比，而不会产生任何由偏振模式色散引起的脉冲衰减。混合光纤拉伸器有效地补偿了光子带隙光纤的特殊色散，获得了平均功率为1 w、脉冲能量为21 nj的无基座440-fs脉冲。高功率飞秒脉冲的保偏光纤尾纤输出可用于各种应用。
Structural birefringent properties of a hollow-core photonic-bandgap fiber were carefully investigated and applied to all-fiber chirped-pulse amplification as a compressor. The group birefringence of as high as 6.9x10(-4) and the dispersion splitting by as large as 149 ps/nm/km between the two principal polarization modes were observed at 1557 nm. By launching the amplifier output to one of the polarization modes a 17-dB polarization extinction ratio was obtained without any pulse degradation originating from polarization-mode dispersion. A hybrid fiber stretcher effectively compensates the peculiar dispersion of the photonic-bandgap fiber and pedestal-free 440-fs pulses with a 1-W average power and 21-nJ pulse energy were obtained. Polarization-maintaining fiber-pigtail output of high-power femtosecond pulses is useful for various applications.