Ultrafast all-optical switching in a silicon-nanocrystal-based silicon slot waveguide at telecom wavelengths.
We demonstrate experimentally all-optical switching on a silicon chip at telecom wavelengths. The switching device comprises a compact ring resonator formed by horizontal silicon slot waveguides filled with highly nonlinear silicon nanocrystals in silica. When pumping at power levels about 100 mW using 10 ps pulses, more than 50% modulation depth is observed at the switch output. The switch performs about 1 order of magnitude faster than previous approaches on silicon and is fully fabricated using complementary metal oxide semiconductor technologies.
Martínez
Alejandro
A
Nanophotonics Technology Center (NTC), Universidad Politécnica de Valencia, Valencia, Spain. amartinez@ntc.upv.es
Blasco
Javier
J
Sanchis
Pablo
P
Galán
José V
JV
García-Rupérez
Jaime
J
Jordana
Emmanuel
E
Gautier
Pauline
P
Lebour
Youcef
Y
Hernández
Sergi
S
Guider
Romain
R
Daldosso
Nicola
N
Garrido
Blas
B
Fedeli
Jean Marc
JM
Pavesi
Lorenzo
L
Martí
Javier
J
Spano
Rita
R
D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D055096:Optical Devices; D012825:Silicon / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry; D013685:Telecommunications
D012822:Silicon Dioxide; D012825:Silicon