Compact Optical Switches and Modulators Based on Dispersion Engineered Photonic Crystals

Liam O'Faolain; Daryl M. Beggs; Thomas P. White; Tobias Kampfrath; Kobus Kuipers; Thomas F. Krauss

doi:10.1109/JPHOT.2010.2047918

Compact Optical Switches and Modulators Based on Dispersion Engineered Photonic Crystals

Liam O'Faolain, Daryl M. Beggs, Thomas P. White, Tobias Kampfrath, Kobus Kuipers, Thomas F. Krauss

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

Abstract

We use slow-light photonic crystals to enhance optical switching and modulation in silicon. By using dispersion-engineered designs, a switch as short as 5 mu m was achieved, in which we have demonstrated rerouting of optical pulses on a 3-ps time scale through the absorption of a femtosecond pulse. We additionally demonstrate a modulator with a Mach-Zehnder interferometer (MZI) configuration with flat-band slow-light photonic crystal phase shifters that is designed to give a large group-index-bandwidth product. An extinction ratio in excess of 15 dB is obtained over the entire 11-nm bandwidth of the modulator.

Original language	English
Pages (from-to)	404-414
Number of pages	11
Journal	IEEE Photonics Journal
Volume	2
Issue number	3
DOIs	https://doi.org/10.1109/JPHOT.2010.2047918
Publication status	Published - Jun 2010

Keywords

Engineered photonic nanostructures
ultrafast nonlinear processes
nonlinear effects
slow light
silicon nanophotonics
photonic crystals
BAND SLOW LIGHT
WAVE-GUIDES
SILICON
POWER
CHIP
TEMPERATURE
BANDWIDTH
CAPACITOR
NETWORKS

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title = "Compact Optical Switches and Modulators Based on Dispersion Engineered Photonic Crystals",

abstract = "We use slow-light photonic crystals to enhance optical switching and modulation in silicon. By using dispersion-engineered designs, a switch as short as 5 mu m was achieved, in which we have demonstrated rerouting of optical pulses on a 3-ps time scale through the absorption of a femtosecond pulse. We additionally demonstrate a modulator with a Mach-Zehnder interferometer (MZI) configuration with flat-band slow-light photonic crystal phase shifters that is designed to give a large group-index-bandwidth product. An extinction ratio in excess of 15 dB is obtained over the entire 11-nm bandwidth of the modulator.",

keywords = "Engineered photonic nanostructures, ultrafast nonlinear processes, nonlinear effects, slow light, silicon nanophotonics, photonic crystals, BAND SLOW LIGHT, WAVE-GUIDES, SILICON, POWER, CHIP, TEMPERATURE, BANDWIDTH, CAPACITOR, NETWORKS",

author = "Liam O'Faolain and Beggs, \{Daryl M.\} and White, \{Thomas P.\} and Tobias Kampfrath and Kobus Kuipers and Krauss, \{Thomas F.\}",

year = "2010",

month = jun,

doi = "10.1109/JPHOT.2010.2047918",

language = "English",

volume = "2",

pages = "404--414",

journal = "IEEE Photonics Journal",

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publisher = "IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC",

number = "3",

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T1 - Compact Optical Switches and Modulators Based on Dispersion Engineered Photonic Crystals

AU - O'Faolain, Liam

AU - Beggs, Daryl M.

AU - White, Thomas P.

AU - Kampfrath, Tobias

AU - Kuipers, Kobus

AU - Krauss, Thomas F.

PY - 2010/6

Y1 - 2010/6

N2 - We use slow-light photonic crystals to enhance optical switching and modulation in silicon. By using dispersion-engineered designs, a switch as short as 5 mu m was achieved, in which we have demonstrated rerouting of optical pulses on a 3-ps time scale through the absorption of a femtosecond pulse. We additionally demonstrate a modulator with a Mach-Zehnder interferometer (MZI) configuration with flat-band slow-light photonic crystal phase shifters that is designed to give a large group-index-bandwidth product. An extinction ratio in excess of 15 dB is obtained over the entire 11-nm bandwidth of the modulator.

AB - We use slow-light photonic crystals to enhance optical switching and modulation in silicon. By using dispersion-engineered designs, a switch as short as 5 mu m was achieved, in which we have demonstrated rerouting of optical pulses on a 3-ps time scale through the absorption of a femtosecond pulse. We additionally demonstrate a modulator with a Mach-Zehnder interferometer (MZI) configuration with flat-band slow-light photonic crystal phase shifters that is designed to give a large group-index-bandwidth product. An extinction ratio in excess of 15 dB is obtained over the entire 11-nm bandwidth of the modulator.

KW - Engineered photonic nanostructures

KW - ultrafast nonlinear processes

KW - nonlinear effects

KW - slow light

KW - silicon nanophotonics

KW - photonic crystals

KW - BAND SLOW LIGHT

KW - WAVE-GUIDES

KW - SILICON

KW - POWER

KW - CHIP

KW - TEMPERATURE

KW - BANDWIDTH

KW - CAPACITOR

KW - NETWORKS

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U2 - 10.1109/JPHOT.2010.2047918

DO - 10.1109/JPHOT.2010.2047918

M3 - Article

SN - 1943-0655

VL - 2

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EP - 414

JO - IEEE Photonics Journal

JF - IEEE Photonics Journal

IS - 3

ER -

Compact Optical Switches and Modulators Based on Dispersion Engineered Photonic Crystals

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