Enhanced continuous-wave four-wave mixing efficiency in nonlinear AlGaAs waveguides.
Enhancements of the continuous-wave four-wave mixing conversion efficiency and bandwidth are accomplished through the application of plasma-assisted photoresist reflow to reduce the sidewall roughness of sub-square-micron-modal area waveguides. Nonlinear AlGaAs optical waveguides with a propagation loss of 0.56 dB/cm demonstrate continuous-wave four-wave mixing conversion efficiency of -7.8 dB. Narrow waveguides that are fabricated with engineered processing produce waveguides with uncoated sidewalls and anti-reflection coatings that show group velocity dispersion of +0.22 ps²/m. Waveguides that are 5-mm long demonstrate broadband four-wave mixing conversion efficiencies with a half-width 3-dB bandwidth of 63.8-nm.
Paveen
P
Apiratikul
Jeremiah J
JJ
Wathen
Gyorgy A
GA
Porkolab
Bohan
B
Wang
Lei
L
He
Thomas E
TE
Murphy
Christopher J K
CJ
Richardson