Patent ID: 6907163

Claim:
An optical coupling system comprising: a first collimator assembly having a first optical axis; a second collimator assembly having a second optical axis; an optical device disposed along an optical path between the first and second collimator assembly; a first outer sleeve for containing the first collimator assembly, said first outer sleeve having an angled flat end face for forming a first angle so that the end is slanted; and a second outer sleeve for containing the second collimator assembly, said second outer sleeve having a flat end face for abutting the angled flat end face for abutting the angled flat end face of the first outer sleeve such that the first optical axis of the first collimator assembly intersects with the second optical axis of the second collimator assembly at a coupling angle about the intersection of the optical axis of the first collimator and the optical axis of the second collimator, wherein the coupling angle is a function of the angled flat end face forming a first angle with the flat end face of the second outer sleeve, wherein the first outer sleeve and the second outer sleeve are relatively rotatable to each other for changing the coupling angle for coupling an optical signal therebetween the first and the second collimator prior to being permanently fixed together.