摘要：The one dimension photonic crystal(1D-PC) polarization filters with four channels and nine channels are presented based on different angular responses of the 1D-PC band *** using the optical transfer matrix method(TMM),the filtering characteristics are studied numerically,and the results show that both of the filters have the even signal channel spacing,for each channel the polarization separation degree is more than 0.96,the quality factor is about 104 magnitude,and the band width is almost *** the 1D-PC polarization filter is a promising candidate for multi-channel polarization filters.

摘要：本文介绍了国外某1×300 MW循环流化床锅炉在运行中出现的膨胀异常现象,通过现场实际运行及检修情况,对该循环流化床锅炉在12.6 m水冷壁发生膨胀异常的原因进行了深入分析与探讨,有针对性地对膨胀节的内部结构进行优化设计,很好地解决了膨胀异常,对其他同类电厂具有较好的参考意义。