Title :
Theoretical analysis of integrated collimating waveguide lens
Author :
Mackenzie, Mark R. ; Kwok, Chee Yee
Author_Institution :
Sch. of Electr. Eng. & Telecommun., Univ. of New South Wales, Sydney, NSW, Australia
fDate :
4/1/2003 12:00:00 AM
Abstract :
An integrated collimating waveguide lens is analyzed for applications which require the focusing of an optical beam onto the waveguide of a planar lightwave circuit. The lens has a refractive index profile which is parabolically graded as a function of height to focus light in the vertical plane, and has a convex front face to focus light in the horizontal plane. Analysis based on the propagation of a Gaussian field is used to design a lens pair which minimizes the optical loss for a given propagation length. The beam propagation method is used to identify fabrication tolerances which may have impact on the performance of the lens pair. The lens pair has application in micro-optoelectromechanical (MOEM) switches based on planar optical waveguide circuits.
Keywords :
gradient index optics; lenses; microlenses; optical collimators; optical design techniques; optical fabrication; optical focusing; optical losses; optical planar waveguides; optical switches; optical waveguide components; Gaussian field propagation; beam propagation method; convex front face; design; fabrication tolerances; focusing; height to focus light; horizontal plane; integrated collimating waveguide lens; lens pair; micro-optoelectromechanical switches; optical beam; optical loss; parabolically graded refractive index profile; planar lightwave circuit; planar optical waveguide circuits; propagation length; vertical plane; Circuits; Lenses; Optical beams; Optical collimators; Optical planar waveguides; Optical propagation; Optical waveguide theory; Optical waveguides; Planar waveguides; Waveguide theory;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.810105
