High-contrast optical modulation by surface acoustic waves
نویسندگان
چکیده
Numerical calculations are employed to study the modulation of light by surface acoustic waves (SAWs) in photonic band gap (PBG) structures. The on/off contrast ratio in a PBG switch based on an optical cavity is determined as a function of the SAW-induced dielectric modulation. We show that these structures exhibit high contrast ratios even for moderate acousto-optic coupling. PACS: 42.79.Ta, 42.79.Sz, 43.38.Rh, 43.35.Sx Typeset using REVTEX ∗Corresponding Author: [email protected] Permanent address: SRI International, Menlo Park, CA 94025, USA
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