Abstract
We demonstrate digital tuning of the slow-light regime in silicon photonic-crystal waveguides by performing atomic layer deposition of hafnium oxide. The high group-index regime was deterministically controlled (redshift of 140±10 pm per atomic layer) without affecting the group-velocity dispersion and third-order dispersion. Additionally, differential tuning of 110±30 pm per monolayer of the slow-light TE-like and TM-like modes was observed. This passive postfabrication process has potential applications including the tuning of chip-scale optical interconnects, as well as Raman and parametric amplification.
Original language | English (US) |
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Article number | 081107 |
Journal | Applied Physics Letters |
Volume | 96 |
Issue number | 8 |
DOIs | |
State | Published - 2010 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)