TY - JOUR
T1 - Applications of nonlinear effects in silicon wire waveguides - All optical modulation, wavelength conversion and quantum entanglement
AU - Yamada, K.
AU - Tsuchizawa, T.
AU - Watanabe, T.
AU - Fukuda, H.
AU - Shinojima, H.
AU - Nishi, H.
AU - Takesue, H.
AU - Tanabe, T.
AU - Shinya, A.
AU - Kuramochi, E.
AU - Notomi, M.
AU - Tokura, Y.
AU - Itabashi, S.
PY - 2008
Y1 - 2008
N2 - We demonstrate efficient nonlinear functions using silicon nanophotonic structures. In the ultrasmall core of the waveguides and cavities, nonlinear phenomena are significantly enhanced. Applying the two-photon absorption effect, we have confirmed all optical modulation, in which the modulation speed is improved to around 50 ps by eliminating free carriers. Applying the four-wave-mixing effect, we have achieved high-efficiency wavelength conversion. The conversion efficiency is -11 dB, and the efficiency will be further improved by eliminating free carriers. Using the fourwave-mixing effect, we have also realized a low-noise entangled photon pair source. The source does not need a refrigeration system for noise reduction, which is a great advantage for practical application.
AB - We demonstrate efficient nonlinear functions using silicon nanophotonic structures. In the ultrasmall core of the waveguides and cavities, nonlinear phenomena are significantly enhanced. Applying the two-photon absorption effect, we have confirmed all optical modulation, in which the modulation speed is improved to around 50 ps by eliminating free carriers. Applying the four-wave-mixing effect, we have achieved high-efficiency wavelength conversion. The conversion efficiency is -11 dB, and the efficiency will be further improved by eliminating free carriers. Using the fourwave-mixing effect, we have also realized a low-noise entangled photon pair source. The source does not need a refrigeration system for noise reduction, which is a great advantage for practical application.
KW - All optical modulation
KW - Entangled photon generation
KW - Optical nonlinearity
KW - Photonic crystal cavity
KW - Silicon photonics
KW - Silicon wire waveguide
KW - Wavelength conversion
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U2 - 10.1117/12.803760
DO - 10.1117/12.803760
M3 - Conference article
AN - SCOPUS:62449226101
SN - 0277-786X
VL - 7134
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
M1 - 71341R
T2 - Passive Components and Fiber-based Devices V
Y2 - 27 October 2008 through 30 October 2008
ER -