Numerical study of near-infrared photodetectors with surface-plasmon antenna for optical communication

Daisuke Okamoto; Junichi Fujikata; Kenichi Nishi; Keishi Ohashi

doi:10.1143/JJAP.47.2921

Numerical study of near-infrared photodetectors with surface-plasmon antenna for optical communication

Daisuke Okamoto^*, Junichi Fujikata, Kenichi Nishi, Keishi Ohashi

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

We propose an InP-based nanoscale metal-semiconductor-metal photodiode with a surface plasmon antenna composed of gold slit arrays for optical communication systems. Resonant modes of the surface plasmon antenna are numerically simulated by the finite-difference time-domain method. The calculation results suggest the advantage of the hybrid mode, which is produced by a Wood-Rayleigh anomaly mode and a vertical cavity mode. The hybrid mode enables a quantum efficiency of more than 50% when using a 250-nm-thick InGaAs absorption layer. A higher efficiency of about 95% can be achieved by combining a surface plasmon antenna with a distributed Bragg reflector consisting of 20 periods of quarter-wave InP/InGaAsP layers.

Original language	English
Pages (from-to)	2921-2923
Number of pages	3
Journal	Japanese journal of applied physics
Volume	47
Issue number	4 PART 2
DOIs	https://doi.org/10.1143/JJAP.47.2921
Publication status	Published - 2008 Apr 25
Externally published	Yes

Keywords

Compound semiconductor
Distributed bragg reflector
Finite-difference time-domain method
Metal-semiconductor-metal photodiode
Optical communication
Subwavelength grating
Surface plasmon

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.47.2921

Cite this

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title = "Numerical study of near-infrared photodetectors with surface-plasmon antenna for optical communication",

abstract = "We propose an InP-based nanoscale metal-semiconductor-metal photodiode with a surface plasmon antenna composed of gold slit arrays for optical communication systems. Resonant modes of the surface plasmon antenna are numerically simulated by the finite-difference time-domain method. The calculation results suggest the advantage of the hybrid mode, which is produced by a Wood-Rayleigh anomaly mode and a vertical cavity mode. The hybrid mode enables a quantum efficiency of more than 50% when using a 250-nm-thick InGaAs absorption layer. A higher efficiency of about 95% can be achieved by combining a surface plasmon antenna with a distributed Bragg reflector consisting of 20 periods of quarter-wave InP/InGaAsP layers.",

keywords = "Compound semiconductor, Distributed bragg reflector, Finite-difference time-domain method, Metal-semiconductor-metal photodiode, Optical communication, Subwavelength grating, Surface plasmon",

author = "Daisuke Okamoto and Junichi Fujikata and Kenichi Nishi and Keishi Ohashi",

year = "2008",

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doi = "10.1143/JJAP.47.2921",

language = "English",

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publisher = "Japan Society of Applied Physics",

number = "4 PART 2",

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T1 - Numerical study of near-infrared photodetectors with surface-plasmon antenna for optical communication

AU - Okamoto, Daisuke

AU - Fujikata, Junichi

AU - Nishi, Kenichi

AU - Ohashi, Keishi

PY - 2008/4/25

Y1 - 2008/4/25

N2 - We propose an InP-based nanoscale metal-semiconductor-metal photodiode with a surface plasmon antenna composed of gold slit arrays for optical communication systems. Resonant modes of the surface plasmon antenna are numerically simulated by the finite-difference time-domain method. The calculation results suggest the advantage of the hybrid mode, which is produced by a Wood-Rayleigh anomaly mode and a vertical cavity mode. The hybrid mode enables a quantum efficiency of more than 50% when using a 250-nm-thick InGaAs absorption layer. A higher efficiency of about 95% can be achieved by combining a surface plasmon antenna with a distributed Bragg reflector consisting of 20 periods of quarter-wave InP/InGaAsP layers.

AB - We propose an InP-based nanoscale metal-semiconductor-metal photodiode with a surface plasmon antenna composed of gold slit arrays for optical communication systems. Resonant modes of the surface plasmon antenna are numerically simulated by the finite-difference time-domain method. The calculation results suggest the advantage of the hybrid mode, which is produced by a Wood-Rayleigh anomaly mode and a vertical cavity mode. The hybrid mode enables a quantum efficiency of more than 50% when using a 250-nm-thick InGaAs absorption layer. A higher efficiency of about 95% can be achieved by combining a surface plasmon antenna with a distributed Bragg reflector consisting of 20 periods of quarter-wave InP/InGaAsP layers.

KW - Compound semiconductor

KW - Distributed bragg reflector

KW - Finite-difference time-domain method

KW - Metal-semiconductor-metal photodiode

KW - Optical communication

KW - Subwavelength grating

KW - Surface plasmon

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Numerical study of near-infrared photodetectors with surface-plasmon antenna for optical communication

Abstract

Keywords

ASJC Scopus subject areas

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