Patent ID: 6192063
Filing Date: 2001-02-20
Classification: G02F,H01S

Abstract:
A polarization-dependent type directional isolator for allowing incident polarized lights to travel in directions opposite to each other, comprising:a pair of first optical means positioned at a path along which the incident polarized light travel, each of the pair of first optical means non-reciprocally rotating each of the incident polarized lights;a pair of second optical means connected to each of the pair of first optical means for reciprocally rotating the incident polarized lights by a given angle based on the traveling direction thereof; anda third optical means positioned between one of the pair of first optical means and one of the pair of second optical means for passing specific components of the incident polarized light,wherein one of said pair of second optical means is disposed between said pair of first optical means, whereby the isolator passes only a vertical component of an incident polarized light traveling in a first direction and only a horizontal component of another incident polarized light traveling in an second direction opposite the first direction.