Design of a terahertz photonic crystal transmission filter containing ferroelectric material

Tzu Chyang King; Jian Jie Chen; Kai Chun Chang; Chien Jang Wu

doi:10.1364/AO.55.008276

Design of a terahertz photonic crystal transmission filter containing ferroelectric material

Tzu Chyang King, Jian Jie Chen, Kai Chun Chang, Chien Jang Wu^*

^*Corresponding author for this work

Undergraduate Program of Electro-Optical Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The ferroelectric material KTaO₃ (KTO) has a very high refractive index, which is advantageous to the photonic crystal (PC) design. KTO polycrystalline crystal has a high extinction coefficient. In this work, we perform a theoretical study of the transmission properties of a PC bandpass filter made of polycrystalline KTO at terahertz (THz) frequencies. Our results show that the defect modes of usual PC narrowband filters no longer exist because of the existence of the high loss. We provide a new PC structure for the high-extinction materials and show that it has defect modes in its transmittance spectra, providing a possible bandpass filter design in the THz region.

Original language	English
Pages (from-to)	8276-8279
Number of pages	4
Journal	Applied Optics
Volume	55
Issue number	29
DOIs	https://doi.org/10.1364/AO.55.008276
Publication status	Published - 2016 Oct 10

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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title = "Design of a terahertz photonic crystal transmission filter containing ferroelectric material",

abstract = "The ferroelectric material KTaO3 (KTO) has a very high refractive index, which is advantageous to the photonic crystal (PC) design. KTO polycrystalline crystal has a high extinction coefficient. In this work, we perform a theoretical study of the transmission properties of a PC bandpass filter made of polycrystalline KTO at terahertz (THz) frequencies. Our results show that the defect modes of usual PC narrowband filters no longer exist because of the existence of the high loss. We provide a new PC structure for the high-extinction materials and show that it has defect modes in its transmittance spectra, providing a possible bandpass filter design in the THz region.",

author = "King, {Tzu Chyang} and Chen, {Jian Jie} and Chang, {Kai Chun} and Wu, {Chien Jang}",

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AU - Chen, Jian Jie

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AU - Wu, Chien Jang

PY - 2016/10/10

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AB - The ferroelectric material KTaO3 (KTO) has a very high refractive index, which is advantageous to the photonic crystal (PC) design. KTO polycrystalline crystal has a high extinction coefficient. In this work, we perform a theoretical study of the transmission properties of a PC bandpass filter made of polycrystalline KTO at terahertz (THz) frequencies. Our results show that the defect modes of usual PC narrowband filters no longer exist because of the existence of the high loss. We provide a new PC structure for the high-extinction materials and show that it has defect modes in its transmittance spectra, providing a possible bandpass filter design in the THz region.

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Design of a terahertz photonic crystal transmission filter containing ferroelectric material

Abstract

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