Resonant tunneling wavelength filters with high Q and high transmittance based on photonic crystal slabs

This paper demonstrates the design scenario of resonant tunneling filters to achieve high Q and high transmission simultaneously, which are constructed by point-defect cavities and line-defect waveguides on 2D PhC-slabs. Furthermore, these devices are fabricated based on the proposed design in Si PhC slabs. The measured characteristics of fabricated devices show good agreement with calculation results. This demonstrates that a resonant filter device can be developed in 2D PhC slabs with higher Q and higher transmission if Q_v and Q_h are properly designed.