Gao Weiqing, Liao Meisong, Yang Lingzhen, Yan Xin, Suzuki Takenobu, Ohishi Yasutake
Research Center for Advanced Photon Technology, Toyota Technological Institute, Tempaku, Nagoya, Japan.
Appl Opt. 2012 Mar 10;51(8):1071-5. doi: 10.1364/AO.51.001071.
We demonstrate an all-fiber broadband supercontinuum (SC) source with high efficiency in a step-index high nonlinear silica fiber, which was pumped by a 1557 nm subpicosecond-pulse laser in the normal dispersion region. The broad SC spectrum covers the spectral range from 840 to 2390 nm, and the 10 dB bandwidth from 1120 nm to 2245 nm of the SC covers one octave, assuming the peaks near 1550 nm were filtered. The SC source system is constructed by all-fiber components, which can be fusion-spliced together directly with low loss, less than 0.1 dB. Thus the SC source has high energy transfer efficiency from the pump source. The maximum SC average power of 332 mW is obtained, including the peaks near 1550 nm. The spectral density for the 10 dB bandwidth is in the range from -17.3 to -7.3 dBm/nm.
我们展示了一种在阶跃折射率高非线性石英光纤中具有高效率的全光纤宽带超连续谱（SC）源，它由一个1557nm的亚皮秒脉冲激光器在正常色散区域泵浦。宽带SC光谱覆盖从840到2390nm的光谱范围，假设1550nm附近的峰值被滤除，SC的10dB带宽从1120nm到2245nm覆盖一个倍频程。SC源系统由全光纤组件构成，这些组件可以直接以低于0.1dB的低损耗熔接在一起。因此，SC源具有从泵浦源的高能量传输效率。获得了332mW的最大SC平均功率，包括1550nm附近的峰值。10dB带宽的光谱密度在-17.3至-7.3dBm/nm范围内。
