Optical detector for minimizing optical crosstalk

摘要

An optical detector is provided including a substantially annular metallic ring positioned on either side of an active (i.e. intrinsic) region of the optical detector to minimize optical crosstalk. Optical crosstalk originates from adjacent optical sources (e.g., VCSELs) emitting light toward the direction of the optical detector. The metallic ring prevents the light which propagates substantially parallel to a base of the optical detector from reaching the active region of the optical detector.