Patent ID: 9008474
Filing Date: 2015-04-14
Classification: G02B

Abstract:
1. An optical module for communicating with a single optical fiber by a focused coupling system, comprising: a first transmitter optical device that provides a first LD for emitting light with a first specific wavelength λ a second transmitter optical device that provides a second LD for emitting light with a second specific λ2 wavelength different from said first specific wavelength λ a WDM filter that multiplexes said light provided from said first LD through said first individual lens with said light provided from said second LD through said second individual lens; and a condenser lens for coupling said WDM filter optically with said optical fiber, said condenser lens having one of beam waists located on an end of said optical fiber; and a coupling unit configured to install said condenser lens and said WDM filter therein, said coupling unit having first to fourth outer walls, said single optical fiber being fixed in said first outer wall, said first transmitter optical device being attached to said second outer wall of said coupling unit facing said first outer wall through said first joint sleeve, said second transmitter optical device being attached to said third outer wall of said coupling unit through said second joint sleeve, said third outer wall extending in perpendicular to said first and second outer walls, wherein said first joint sleeve aligns another beam waist of said first individual lens with another beam waist of said condenser lens on said second outer wall, and said second joint sleeve aligns another beam waist of said second individual lens with said another beam waist of said condenser lens on said third outer wall.