Patent ID: 6823103
Filing Date: 2004-11-23
Classification: G02B

Abstract:
An optical device for controlling insertion loss of wavelength-division multiplexed signals comprising a plurality of signals, each signal having a predetermined wavelength different from the remaining signals, the optical device comprising:a phased array having a proximal end and a distal end, said phased array comprising a plurality of waveguides extending between said proximal and distal ends, each said waveguide having a predetermined length different from another waveguide; at least one proximal waveguide having a first end and a second end; a proximal slab waveguide between said proximal end of said phased array and said second end of said proximal waveguide; a plurality of distal waveguides each having a first end and a second end, at least one of said plurality of distal waveguides includes at least one gap between said first and second ends; and a distal slab waveguide between said distal end of said phased array and said second end of said distal waveguide, wherein said gap of each of said distal waveguides varies between said plurality of distal waveguides.