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Effect of structure random disturbances on characterizations of microstructured optical fibres 下载免费PDF全文
A method is presented to analyse the effect of
structure random disturbances on the confinement loss and the chromatic
dispersion characterizations of microstructured optical fibres, which
combines multipole methods with the random statistics process. Some useful
results to the fabrication of microstructured optical fibres have been
obtained. 相似文献
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Fiber optical parametric oscillator based on photonic crystal fiber pumped with all-normal-dispersion mode-locked Yb:fiber laser 下载免费PDF全文
We demonstrate a cost effective, linearly tunable fiber optical parametric oscillator based on a home-made photonic crystal fiber pumped with a mode-locked ytterbium-doped fiber laser, providing linely tuning ranges from 1018 nm to 1038 nm for the idler wavelength and from 1097 nm to 1117 nm for the signal wavelength by tuning the pump wavelength and the cavity length. In order to obtain the desired fiber with a zero dispersion wavelength around 1060 rim, eight sam- ples of photonic crystal fibers with gradually changed structural parameters are fabricated for the reason that it is difficult to accurately customize the structural dimensions during fabrication. We verify the usability of the fabricated fiber experimen- tally via optical parametric generation and conclude a successful procedure of design, fabirication, and verification. A seed source of home-made all-normal-dispersion mode-locked ytterbium-doped fiber laser with 38.57 ps pulsewidth around the 1064 nm wavelength is used to pump the fiber optical parametric oscillator. The wide picosecond pulse pump laser enables a larger walk-off tolerance between the pump light and the oscillating light as well as a longer photonic crystal fiber of 20 m superior to the femtosecond pulse lasers, resulting in a larger parametric amplification and a lower threshold pump power of 15.8 dBm of the fiber optical parametric oscillator. 相似文献
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报道了一种工作于1μm波段、正常色散区、基于半导体可饱和吸收镜(SESAM)的被动锁模光纤激光器。激光器以高掺杂Yb光纤为增益物质,结合可调谐滤波器,形成环形腔结构。采用976nm半导体激光器抽运,当抽运功率大于16dBm时,激光器可实现1033~1069nm波长范围内重复频率为25.4MHz的宽带可调谐输出,性能稳定,在调谐范围内均可观测到非常规则的矩形输出光谱。在固定抽运功率下,对调谐范围内输出功率、光谱带宽、时域脉宽进行了实验测量和分析。在波长为1064nm时,用单通道光栅对将谱宽为1.745nm、时域脉宽为34.85ps的脉冲压缩至15.45ps。 相似文献
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