Near Infrared Filtering Properties in Photonic Crystal Containing Extrinsic and Dispersive Semiconductor Defect

Abstract

Abstract-In this work, near infrared filtering properties in a transmission narrowband filter are theoretically investigated. The filter is a defective photonic crystal of (LH) N D(HL) N , where N is the stack number, L is SiO 2 , H is InP, and defect layer D is an extrinsic semiconductor of n-type silicon (n-Si). It is found that there are multiple transmission peaks within the photonic band gap (PBG) as the defect thickness increases. The filtering position can be changed by varying the doping density in n-Si. That is, the peak (channel) wavelength is blued-shifted when the doping density increases. In the angle-dependent filtering property, the channel wavelength is also blued-shifted as the angle of incidence increases for both TE and TM waves. These filtering properties are of technical use in the applications of semiconductor optoelectronics.

The Influence of Light Beam Convergence on the Stop-Bands of a One-Dimensional Photonic Crystal

“…This study of the impact of the effect of focus should enable an improvement of the optical quality of PCs obtained by microstructuring of silicon. The results are applicable across a wide wavelength range, from the visible to far-infrared, and assist in the engineering of Si based photonic elements for use in optical communication, integrated-optics and display technologies [22][23][24][25][26].…”