A filter array based on the variable period grating array and Fabry-Perot resonator  

作　　者：石振东 方亮 周崇喜 

机构地区：[1]State Key Laboratory of Optical Technologies for Micro-Fabrication,Institute of Optics and Electronics,Chinese Academy of Sciences [2]Chinese Academy of Sciences

出　　处：《Optoelectronics Letters》2014年第1期9-11,共3页光电子快报（英文版）

基　　金：the National Program for Significant Scientific Instruments Development of China(No.2011YQ03012407);the National Natural Science Foundation of China(No.61308064)

摘　　要：An integration method of grating array with different periods and Fabry-Perot(FP)resonator with an all-dielectric single-cavity is proposed.It is based on the capacity of spatial separation of spectral component by the grating and band-pass characteristics of filter to achieve the multi-pass band filtering.The filtering response can be tuned by changing the period of the grating rather than the cavity length of the filter.Theoretically,the relationship of the grating period and the peak wavelength is obtained by using the transfer matrix method(TMM).The device is analyzed by adopting the finite-difference time-domain(FDTD)method.The filter array can cover the wavelengths ranging from850 nm to 950 nm with the full-width at half-maximum(FWHM)of 11-28 nm,and is suitable for the integration of the micro-filter array and the detectors.An integration method of grating array with different periods and Fabry-Perot（FP）resonator with an all-dielectric single-cavity is proposed.It is based on the capacity of spatial separation of spectral component by the grating and band-pass characteristics of filter to achieve the multi-pass band filtering.The filtering response can be tuned by changing the period of the grating rather than the cavity length of the filter.Theoretically,the relationship of the grating period and the peak wavelength is obtained by using the transfer matrix method（TMM）.The device is analyzed by adopting the finite-difference time-domain（FDTD）method.The filter array can cover the wavelengths ranging from850 nm to 950 nm with the full-width at half-maximum（FWHM）of 11-28 nm,and is suitable for the integration of the micro-filter array and the detectors.

关 键 词：滤波器阵列 光栅周期 变周期 谐振器 有限差分时域 传递矩阵法 过滤器 集成方法 

分 类 号：TN713[电子电信—电路与系统]