Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2193968
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We propose an optical switch in simple waveguide geometry with a metal thin film sandwiched between two layers of electro-optic materials. Its mechanism is based on the distinct responsive behaviors of two surface plasmon modes in the metal film to the cladding films. By exploiting the specific distribution of surface plasmon fields in metals, an effective optical switch with a very low crosstalk -27 dB and a switching bias of 59 kV/cm is achieved for Ba0.5Sr0.5TiO3 ferroelectric films. The dependences of the optical switch's crosstalk and switching bias on the geometric parameters of the structure are also analyzed. (c) 2006 American Institute of Physics.
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