Title :
A terahertz photonic crystal structure for sensing applications
Author :
Silveira, L. Cecilia Acosta ; Hejase, Jose A. ; Chahal, Premjeet
Author_Institution :
Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA
Abstract :
This paper explores the use of a 1-D photonic crystal (PC), with and without a defect layer, for sensing in the THz spectral region. The PC consists of a stack of alternating high and low permittivity materials (BK-7 glass and air). Introducing a liquid or gaseous sample leads to a change in the transmission characteristics of the PC. An inverse problem method is used to characterize the dielectric properties of the sample under study. Such a configuration provides high sensitivity while requiring a small sample volume.
Keywords :
electromagnetic wave transmission; inverse problems; microwave photonics; permittivity; photonic crystals; 1D photonic crystal; PC; THz spectral region; defect layer; dielectric property; high permittivity material; inverse problem method; low permittivity material; sensing application; terahertz photonic crystal structure; transmission characteristics; Dielectrics; Glass; Inverse problems; Permittivity; Photonic crystals; Sensors;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6348842
