Patent ID: 6873768
Filing Date: 2005-03-29
Classification: G02B

Abstract:
1. A fiber-optic optical coupling assembly comprising: a) a first optical waveguide having a first terminal end, b) a first section of graded index fiber having a first terminal end and a second terminal end, wherein the first terminal end of said graded index fiber is in optical communication with the first terminal end of the first optical waveguide whereby an optical beam propagating from the first terminal end of the first optical waveguide and exiting the second terminal end of the graded index fiber is reduced to a diameter d at distance from the terminal end of the graded index fiber L, wherein d is less than about 30 microns and L is greater than about 220 microns; c) a second optical waveguide having a first terminal end, d) a second section of graded index fiber having a first terminal end and a second terminal end, wherein the first terminal end of said second graded index fiber is in optical communication with the first terminal end of the second optical waveguide whereby the second optical waveguide and the second section of graded index fiber have substantially same characteristics as the first optical waveguide and the first section of graded index fiber, respectively; and, e) a reflective surface disposed a distance L from the second terminal end of the first graded index fiber and disposed a distance L from the second terminal and of the second graded indeed fiber.