Supercontinuum generation in a high index doped silica glass spiral waveguide.
We demonstrate supercontinuum (SC) generation at both 1550 nm and 1288 nm in a compact (< 5mm(2)) 45 cm spiral waveguide composed of CMOS-compatible doped high-index glass. While both wavelengths have weak dispersion and are near zero dispersion points, they present different symmetries. At 1550 nm, the normal dispersion regime takes place at longer wavelengths, whereas at 1290 nm it is at shorter wavelengths, and we observe features in the SC spectra that clearly reflect this. In particular, the spectrum at 1550 nm is more than 300 nm wide (limited by detection) and is well reproduced by simulations based on the measured dispersion. This work represents a practical on-chip broadband wavelength source with potential use in many important applications.
Duchesne
David
D
INRS-EMT, 1650 Boulevard Lionel Boulet, Québec, Canada.
Peccianti
Marco
M
Lamont
Michael R E
MR
Ferrera
Marcello
M
Razzari
Luca
L
Légaré
Francois
F
Morandotti
Roberto
R
Chu
Sai
S
Little
Brent E
BE
Moss
David J
DJ
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005898:Glass / Q000737:chemistry*; D008027:Light; D008422:Materials Testing; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D012822:Silicon Dioxide / Q000737:chemistry*; D014159:Transducers
D012822:Silicon Dioxide