Ultrafast optical thresholding based on two-photon absorption GaAs waveguide photodetectors

Z. Zheng; A. M. Weiner; J. H. Marsh; M. M. Karkhanehchi

doi:10.1109/68.559399

Ultrafast optical thresholding based on two-photon absorption GaAs waveguide photodetectors

Z. Zheng^*
, A. M. Weiner
, J. H. Marsh
, M. M. Karkhanehchi

^*Corresponding author for this work

Purdue University
University of Glasgow

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

69 Scopus citations

Abstract

We report measurements of the pulsewidth dependence of the two-photon absorption photocurrent in GaAs p-i-n waveguide photodetectors using subpicosecond optical pulses at 1.5 μm. For fixed pulse energy, the photocurrent is observed to depend linearly on the inverse of the optical pulsewidth. A subnanosecond electrical response is also observed. Our results show the feasibility of applying such devices for nonlinear processing in ultrafast optical code-division multiple-access and other ultra high-speed optical network applications.

Original language	English
Pages (from-to)	493-495
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	9
Issue number	4
DOIs	https://doi.org/10.1109/68.559399
State	Published - Apr 1997
Externally published	Yes

Keywords

Code division multiaccess
Nonlinear optics
Optical pulse shaping
Photodetectors
Semiconductor waveguides
Threshold decoding
Two-photon absorption
Ultrafast optics

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title = "Ultrafast optical thresholding based on two-photon absorption GaAs waveguide photodetectors",

abstract = "We report measurements of the pulsewidth dependence of the two-photon absorption photocurrent in GaAs p-i-n waveguide photodetectors using subpicosecond optical pulses at 1.5 μm. For fixed pulse energy, the photocurrent is observed to depend linearly on the inverse of the optical pulsewidth. A subnanosecond electrical response is also observed. Our results show the feasibility of applying such devices for nonlinear processing in ultrafast optical code-division multiple-access and other ultra high-speed optical network applications.",

keywords = "Code division multiaccess, Nonlinear optics, Optical pulse shaping, Photodetectors, Semiconductor waveguides, Threshold decoding, Two-photon absorption, Ultrafast optics",

author = "Z. Zheng and Weiner, \{A. M.\} and Marsh, \{J. H.\} and Karkhanehchi, \{M. M.\}",

year = "1997",

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T1 - Ultrafast optical thresholding based on two-photon absorption GaAs waveguide photodetectors

AU - Zheng, Z.

AU - Weiner, A. M.

AU - Marsh, J. H.

AU - Karkhanehchi, M. M.

PY - 1997/4

Y1 - 1997/4

N2 - We report measurements of the pulsewidth dependence of the two-photon absorption photocurrent in GaAs p-i-n waveguide photodetectors using subpicosecond optical pulses at 1.5 μm. For fixed pulse energy, the photocurrent is observed to depend linearly on the inverse of the optical pulsewidth. A subnanosecond electrical response is also observed. Our results show the feasibility of applying such devices for nonlinear processing in ultrafast optical code-division multiple-access and other ultra high-speed optical network applications.

AB - We report measurements of the pulsewidth dependence of the two-photon absorption photocurrent in GaAs p-i-n waveguide photodetectors using subpicosecond optical pulses at 1.5 μm. For fixed pulse energy, the photocurrent is observed to depend linearly on the inverse of the optical pulsewidth. A subnanosecond electrical response is also observed. Our results show the feasibility of applying such devices for nonlinear processing in ultrafast optical code-division multiple-access and other ultra high-speed optical network applications.

KW - Code division multiaccess

KW - Nonlinear optics

KW - Optical pulse shaping

KW - Photodetectors

KW - Semiconductor waveguides

KW - Threshold decoding

KW - Two-photon absorption

KW - Ultrafast optics

UR - https://www.scopus.com/pages/publications/0031120640

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DO - 10.1109/68.559399

M3 - 文章

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SN - 1041-1135

VL - 9

SP - 493

EP - 495

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 4

ER -

Ultrafast optical thresholding based on two-photon absorption GaAs waveguide photodetectors

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