Surface acoustic wave optical modulator

Details Surface acoustic wave optical modulator Surface acoustic wave optical modulator

1990-03-30

1992-03-31

Hille, Rolf

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359313, 385 7, G02F 111, G02B 610

Patent

active

051012944

ABSTRACT:
An acousto-optic modulator is described which comprises a first support layer and a second layer of piezoelectric semiconductor material disposed over the support layer. The second layer includes a plurality of active sublayers, each active sublayer having a planar surface and thickness dimension which is such as to enable the active layer to exhibit quantum-well effects. A surface acoustic wave structure is disposed on the second layer for creating an acoustic wave in the second layer. The acoustic wave induces electric field variations therein which are perpendicular to the planar surface of the active sublayers and alter an optical property thereof. An optical beam is directed through the second layer, which beam is modulated by the altered optical properties of the active sublayers.

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