Patent ID: 6654517
Filing Date: 2003-11-25
Classification: G02B

Abstract:
A device, comprising:a light source configured to produce a light beam; a fiber coupler module having a collimator lens which defines a collimator optic axis and a fiber which has one end facet facing said collimator lens and forms an angle with respect to a fiber optic axis of said fiber, said collimator lens positioned to couple said light beam into said fiber through said end facet, wherein said fiber coupler module is configured to hold said fiber at a tilted angle with respect to said collimator optic axis so that an output beam from said fiber is received and collimated by said collimator lens to propagate along said collimator optic axis, and wherein said fiber coupler module includes: a receiving port to hold at least a portion of said collimator lens, a first substrate fabricated to have a first groove to which said collimator lens is engaged, and a second substrate fabricated to have a second groove to hold said fiber in parallel to said second substrate, said second substrate engaged to said first substrate at said tilted angle to place said end facet of said fiber to face said collimator lens; a support module having a first part to mount said light source and a second part with a support platform over which said fiber coupler module is positioned in optical alignment with said light source, said support platform having a top surface facing said fiber coupler module and first and second opposing side surfaces substantially parallel to an optical path of said light beam; first and second vertical elongated engagement members having first distal ends affixed to said first side surface to space from each other and second distal ends affixed to said fiber coupler module; a third vertical elongated engagement member having a first distal end affixed to said second side surface in a position between positions of said first and second vertical elongated engagement members along said optical path of said light beam, said third vertical elongated engagement member having a second distal end affixed to said fiber coupler module; a first horizontal engagement member having a first part engaged to said fiber coupler module and a second part elongated in a direction nominally perpendicular to said first and second side surfaces and engaged to said support platform at a first location close to said first side surface; and a second horizontal engagement member having a first part engaged to said fiber coupler module at a location different from said first horizontal engagement member, and having a second part elongated in a direction nominally parallel to said second elongated part of said first horizontal engagement member and engaged to said support platform at a second location close to said second side surface.