Method of fabricating an optical component and optical component made thereby

Abstract From the Canadian patent

An optical component comprising one or more optical elements (35') aligned with the end(s) of one or more waveguides (25') is fabricated by a process in which, first of all, a doped silica core layer (20) is deposited on a substrate (10) (or on a buffer layer on the substrate) and subsequently a , partial overclad layer (30A) typically 1-5 µm thick is deposited on the core layer. The partial overclad layer and core layer are patterned and etched so as simultaneously to define the optical element(s) and the waveguide core(s). Afterwards, the overclad is completed by depositing a further overclad layer (30B). In the case of application of this fabrication method to a grating-based …