Experimental and theoretical characterization of a lithium niobate photonic crystal
- 5 December 2005
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 87 (24), 241101
- https://doi.org/10.1063/1.2138348
Abstract
In this letter, we investigate the feasibility of tunable lithium niobate ( LiNbO 3 ) photonic crystals. The optical response through a LiNbO 3 photonic structure is theoretically determined in order to obtain a photonic band gap with optimal tunability. We show by means of a finite difference time domain simulation that the optimal lattice parameters can provide a Δ λ = 7 nm shift in the photonic band gap for a Δ n = 0.01 variation of the refractive index with an extinction ratio of − 22.5 dB . The fabrication process and the optical characterization of these novel photonic crystalstructures are also reported. The extinction ratio of the measured photonic band gap is lower than − 12 dB .Keywords
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