Patent ID: 6343166
Filing Date: 2002-01-29
Classification: G02B

Abstract:
A method of assembling a three-port filter including the steps of:positioning a collimator assembly including a GRIN lens and input and reflective optical fibers mounted thereto in a movable fixture; actively aligning the tip and tilt angles of the GRIN lens with respect to the filter holder while monitoring signals of the optical fibers coupled to the collimator assembly to achieve an aligned position with minimum insertion loss; axially displacing the filter holder and GRIN lens from one another while maintaining the lateral and angular alignment between them; placing a UV and thermally curable adhesive on an outer peripheral surface of the GRIN lens; axially moving the filter holder back to its optimum axial position relative to the GRIN lens; and applying UV radiation through the filter end of the filter holder to initially cure the adhesive securing the filter holder to the GRIN lens to form a filter subassembly.