Impedance-matching surface plasmon absorber for FDTD simulations

Chien Chang Chao; Sheng Han Tu; Chih Ming Wang; Hung I. Huang; Chii Chang Chen; Jenq Yang Chang

doi:10.1007/s11468-009-9114-2

Impedance-matching surface plasmon absorber for FDTD simulations

Chien Chang Chao, Sheng Han Tu, Chih Ming Wang, Hung I. Huang, Chii Chang Chen, Jenq Yang Chang

Department of Optics and Photonics

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

8 Scopus citations

Abstract

The perfectly matched layer (PML) can be used as an excellent boundary in the finite-difference time-domain method; however, it fails to absorb surface plasmon (SP) wave directly. In order to absorb an incident SP wave at the edge of a metal surface, an impedance-matching layer (IML) is implemented between the metal surface and the PML. A very low SP wave reflectance of -26.54 dB is achieved through the use of an IML with a length of only λ/3. The IML significantly reduces SP wave reflectance and creates a quasi-infinite regime for the purpose of SP wave propagation on the metal's surface while the acquired simulation area undergoes a slight increase.

Original language	English
Pages (from-to)	51-55
Number of pages	5
Journal	Plasmonics
Volume	5
Issue number	1
DOIs	https://doi.org/10.1007/s11468-009-9114-2
State	Published - Mar 2010

Keywords

Impedance-matching layer
Optical processing
Surface plasmons

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10.1007/s11468-009-9114-2

Cite this

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title = "Impedance-matching surface plasmon absorber for FDTD simulations",

abstract = "The perfectly matched layer (PML) can be used as an excellent boundary in the finite-difference time-domain method; however, it fails to absorb surface plasmon (SP) wave directly. In order to absorb an incident SP wave at the edge of a metal surface, an impedance-matching layer (IML) is implemented between the metal surface and the PML. A very low SP wave reflectance of -26.54 dB is achieved through the use of an IML with a length of only λ/3. The IML significantly reduces SP wave reflectance and creates a quasi-infinite regime for the purpose of SP wave propagation on the metal's surface while the acquired simulation area undergoes a slight increase.",

keywords = "Impedance-matching layer, Optical processing, Surface plasmons",

author = "Chao, {Chien Chang} and Tu, {Sheng Han} and Wang, {Chih Ming} and Huang, {Hung I.} and Chen, {Chii Chang} and Chang, {Jenq Yang}",

note = "Funding Information: Acknowledgment The authors are grateful for the financial support of this research received from the National Science Council of Taiwan, Republic of China.",

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AU - Chao, Chien Chang

AU - Tu, Sheng Han

AU - Wang, Chih Ming

AU - Huang, Hung I.

AU - Chen, Chii Chang

AU - Chang, Jenq Yang

N1 - Funding Information: Acknowledgment The authors are grateful for the financial support of this research received from the National Science Council of Taiwan, Republic of China.

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N2 - The perfectly matched layer (PML) can be used as an excellent boundary in the finite-difference time-domain method; however, it fails to absorb surface plasmon (SP) wave directly. In order to absorb an incident SP wave at the edge of a metal surface, an impedance-matching layer (IML) is implemented between the metal surface and the PML. A very low SP wave reflectance of -26.54 dB is achieved through the use of an IML with a length of only λ/3. The IML significantly reduces SP wave reflectance and creates a quasi-infinite regime for the purpose of SP wave propagation on the metal's surface while the acquired simulation area undergoes a slight increase.

AB - The perfectly matched layer (PML) can be used as an excellent boundary in the finite-difference time-domain method; however, it fails to absorb surface plasmon (SP) wave directly. In order to absorb an incident SP wave at the edge of a metal surface, an impedance-matching layer (IML) is implemented between the metal surface and the PML. A very low SP wave reflectance of -26.54 dB is achieved through the use of an IML with a length of only λ/3. The IML significantly reduces SP wave reflectance and creates a quasi-infinite regime for the purpose of SP wave propagation on the metal's surface while the acquired simulation area undergoes a slight increase.

KW - Impedance-matching layer

KW - Optical processing

KW - Surface plasmons

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DO - 10.1007/s11468-009-9114-2

M3 - 期刊論文

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Impedance-matching surface plasmon absorber for FDTD simulations

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Keywords

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