Patent ID: 7079727
Filing Date: 2006-07-18
Classification: G02B

Abstract:
1. An integrated optical mode shape transformer comprising: (a) a composite waveguide having an input end and an output end, the input end supporting an input fundamental optical mode having a first spot size, the output end supporting an output fundamental optical mode having a second spot size, (b) said first spot size being larger than said second spot size, (c) said composite waveguide further comprising a first waveguide layer having a first refractive index value and a first thickness value, (d) said composite waveguide further comprising a second waveguide layer having a second refractive index value and a second thickness value, (e) said second layer having a width that is laterally tapered down from input end of said composite waveguide to output end of said composite waveguide, and (f) means for fabricating second waveguide layer on top of said first waveguide layer.