Resistive heaters formed in two mask counts on a surface of a grating of a thermo optic device thereby eliminating one mask count from prior art manufacturing methods. The resistive heater is comprised of a heater region and a conductive path region formed together in a first mask count from a relatively...http://www.google.com/patents/US7215838?utm_source=gb-gplus-sharePatent US7215838 - Resistive heater for thermo optic device
