Patent ID: 6233378
Filing Date: 2001-05-15
Classification: G02B,G02F

Abstract:
An optical switch for switching an optical signal from at least one input to one of at least two outputs, comprising:(a) a first waveguide having an input at one end and an output at the other end;(b) a first coupling waveguide proximal to said first waveguide along an interaction stretch thereof having an index grating on the distal side along the interaction stretch;(c) a second coupling waveguide identical to said first coupling waveguide and disposed proximal and mirror-symmetrical thereto;(d) a second waveguide proximal to said second coupling waveguide along an interaction stretch thereof and distal from its index grating; and(e) said second waveguide having an output at one end thereof whereby an optical signal at the input of said first waveguide exits at only one of the output of the first waveguide and the output of the second waveguide depending on the state of said index gratings.