Patent ID: 7340130

Claim:
A method for assembling a multi-port WDM device, comprising: assembling a m-fiber collimator, comprising: attaching a filter to a face of a grin lens; attaching a m-fiber pigtail to another face of the grin lens; and placing a first glass tube over the attached m-fiber pigtail, the grin lens, and the filter, the glass tube extending along the surface of the m-fiber pigtail; assembling a n-fiber collimator, comprising: placing a second glass tube over a lens and extending beyond the lens; and inserting a n-fiber pigtail into the glass tube and attaching the n-fiber pigtail to the lens, wherein the n-fiber defines a first number of fibers and the m-fiber defines a second number of fibers; and placing a glass housing over the m-fiber collimator and the n-fiber collimator.