Patent ID: 6754403
Filing Date: 2004-06-22
Classification: G02F,H04J

Abstract:
An acousto-optical add/drop multiplexer, comprising:an acousto-optical switch on a birefringent and photoelastic substrate, the acousto optical switch comprising: a first optical port on a substrate coupled to a first polarization splitter; a first acousto-optical polarization conversion region (U) including a first optical waveguide branch optically coupled between the first polarization splitter and a second polarization splitter; a second acousto-optical polarization conversion region (L) including a second optical waveguide branch optically coupled between the first polarization splitter and a second polarization splitter; second and third optical ports coupled to the second polarization splitter, a first circulator having, in order of rotation, an input port, a switch port coupled to the first optical port, and an output port; a reflecting device coupled to the second optical port; and a second circulator having, in order of rotation, a filter port coupled to the third optical port, a drop port, and an add port.