Large Kerr effect in bulk Se-based chalcogenide glasses.
High-speed optical communication requires ultrafast all-optical processing and switching capabilities. The Kerr nonlinearity, an ultrafast optical nonlinearity, is often used as the basic switching mechanism. A practical, small device that can be switched with ~1-pJ energies requires a large Kerr effect with minimal losses (both linear and nonlinear). We have investigated theoretically and experimentally a number of Se-based chalcogenide glasses. We have found a number of compounds with a Kerr nonlinearity hundreds of times larger than silica, making them excellent candidates for ultrafast all-optical devices.
Lenz
G
G
Zimmermann
J
J
Katsufuji
T
T
Lines
M E
ME
Hwang
H Y
HY
Spälter
S
S
Slusher
R E
RE
Cheong
S W
SW
Sanghera
J S
JS
Aggarwal
I D
ID