Reflection optical notch filtering behavior of cavity-resonator-integrated guided-mode resonance mirror
Reflection optical notch filtering behavior of cavity-resonator-integrated guided-mode resonance mirror
复制标题
腔谐振腔集成导模谐振镜的反射光学陷波滤波行为
DOI：
10.1109/icep-iaac.2015.7111094
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
and Shogo Ura
中科院分区：
文献类型：
--
作者：
Masahiro Nakata;Tomohiro Kondo;Kenji Kintaka;Junichi Inoue;and Shogo Ura
腔谐振器集成导模谐振滤波器（CRIGF）由光波导中的光栅耦合器（GC）和两个分布式布拉格反射器（DBR）组成，并显示出具有垂直入射波反射相位变化的窄带反射光谱。研究了集成在高反射层上的 CRIGF (CRIGM)。理论上预测，在导引芯和高反射层之间的光学缓冲层厚度适当的情况下，CRIGM表现出反射相位变化的陷波滤波行为。设计了孔径为6μm的CRIGM，谐振波长为1540nm。制作了 11 个具有 5.2 至 5.7 μm 不同缓冲层厚度的 CRIGM，并测量了它们的反射光谱。正如预期的那样，观察到了 2π 的反射相位变化。对于具有一定缓冲层厚度的 CRIGM，观察到反射光谱的深度下降，即反射陷波滤波。
A cavity-resonator-integrated guided-mode resonance filter (CRIGF) consists of a grating coupler (GC) with two distributed Bragg reflectors (DBRs) in an optical waveguide and shows a narrow-band reflection spectrum with a reflection phase variation for a vertically incident wave. A CRIGF integrated on a high-reflection layer (CRIGM) was studied. It is theoretically predicted that a CRIGM shows a notch filtering behavior with a phase variation in the reflection under the condition of the appropriate optical-buffer-layer thickness between the guiding core and the high-reflection layer. A CRIGM of 6-μm aperture was designed with a resonance wavelength of 1540 nm. Eleven CRIGMs with different buffer-layer thicknesses from 5.2 to 5.7 μm were fabricated and their reflection spectra were measured. The reflection phase variation of 2π was observed as expected. A deep drop in reflection spectrum, namely reflection notch filtering, was observed for a CRIGM with a certain buffer-layer thickness.