Patent ID: 6214178
Filing Date: 2001-04-10
Classification: H01J,H01S

Abstract:
A method of forming angled facets on an optoelectronic device to minimize scattering of light out of a defined waveguide axis at an endface, the method comprising the steps of:a) providing said optoelectronic device defined as a structure comprising materials of different indices of refraction arranged to form an optical waveguide along the defined waveguide axis and including opposing first and second endfaces;b) providing a focused ion beam source;c) orienting said optoelectronic device with respect to said focused ion beam source such that a focused ion beam exiting said focused ion beam source will be parallel with a predetermined angled facet plane at a first endface of said optoelectronic device;d) activating said focused ion beam source to generate said focused ion beam for impinging said predetermined angled facet plane of said oriented optoelectronic device and removing material from said first endface of said oriented optoelectronic device, thereby forming an angled facet on said oriented optoelectronic device; ande) repeating steps c) and d) for the second, opposing endface of the optoelectronic device so as to from both a front angled facet and a rear angled facet.