Patent ID: 6535668
Filing Date: 2003-03-18
Classification: G02B

Abstract:
A method of assembling a retro-reflective multi-port fiber optic device, comprising the steps of:providing a lens with a specific filter attached to one facet thereof; providing a series of triple-fiber ferrules respectively defining three-fiber assemblies with different fiber spacings; selecting one of said triple-fiber ferrules with precise spacing among three fibers disposed therein to match the filter for tuning a center wavelength to a pre-designated wavelength; and positioning said selected ferrule by the other facet of said lens opposite to said filter; wherein said three fibers includes one common input pigtail fiber, one transmission output pigtail fiber, and one reflection output pigtail fiber; positioning a mirror closely to one side of said filter opposite to said lens; wherein said transmission output pigtail fiber end extends a little bit longer than those of said common input pigtail fiber and said reflection output pigtail fiber along an axial direction of the said selected ferrule.