摘要：高功率GTWave光纤激光器是目前光纤激光器研究的一个热点。介绍了GTWave光纤的结构,并回顾了国内外高功率GTWave光纤激光器的研究成果,可以看出,国内外GTWave光纤激光器的发展极其迅猛,其功率扩展能力非常强、结构设计非常灵活,输出功率远高于其他光纤激光器;同时,对比分析了高功率GTWave光纤激光器的特点和优势,并对今后的研究进行了展望。

摘要：The photonic crystal fiber-based surface plasmon resonance （SPR） refractive index sensor is demonstrated by using post-processing technique of photonic crystal fiber （PCF）. The coupling of PCF mode field and SPR can be controlled by the air holes collapsing in PCF. The effects of metal film thickness and air hole diameter on the sensor at different wavelength are simulated by using finite element method. The simulation results are analyzed by using the modes matching theory. The amplitude based and spectrum based detection methods are discussed respectively. Refractive index sensitivity 1 700 nm/per refractive index unit （RIU） can be achieved for an aqueous analyte.