Patent ID: 6301411
Filing Date: 2001-10-09
Classification: G02B

Abstract:
An optical communication device comprising a link structure including a light-relay element within a generally conical tube, said light-relay element including said generally conical tube and a core portion having a refractive index, said core portion having a diameter decreasing gradually along an axial direction from a first end to a second end and a radial direction along which said refractive index is graded, a plastic optical fiber having a light-emitting end face, said light-emitting end face engaging said first end of said core portion and having a diameter substantially corresponding to the diameter of said first end of said core portion, and a light receptor comprising a photo diode unit having a light-receiving face, said light-receiving face being one of near and contacting said second end of said core portion and having a diameter substantially corresponding to the diameter of said second end of said core portion, so that connection loss between said core portion and said light receptor is reduced.