Université de Neuchâtel

Optically tunable microcavity in a planar photonic crystal silicon waveguide buried in oxide

Märki, Iwan ; Salt, Martin Guy ; Herzig, Hans-Peter ; Stanley, Ross ; Melhaoui, L. El. ; Lyan, P. ; Fedeli, J. M.

In: Optics Letters, 2006, vol. 31, no. 4, p. 513-515

We present all-optical tuning and switching of a microcavity inside a two-dimensional photonic crystal waveguide. The photonic crystal structure is fabricated in silicon-on-insulator using complementary metal-oxide semiconductor processing techniques based on deep ultraviolet lithography and is completely buried in a silicon dioxide cladding that provides protection from the environment. By...

Université de Neuchâtel

Tuning the resonance of a photonic crystal microcavity with an AFM probe

Märki, Iwan ; Salt, Martin Guy ; Herzig, Hans-Peter

In: Optics Express, 2006, vol. 14, no. 7, p. 2969-2978

We present theoretical and experimental results on switching and tuning of a two-dimensional photonic crystal resonant microcavity by means of a silicon AFM tip, probing the highly localized optical field in the vicinity of the cavity. On-off switching and modulation of the transmission signal in the kHz range is achieved by bringing an AFM tip onto the center of the microcavity, inducing a...