Patent ID: 6760158
Filing Date: 2004-07-06
Classification: G02B,G02F,H04J

Abstract:
An optical device, comprising:a first polarization beam splitter (PBS); a first set of optical rotators optically coupled to the first PBS at a face intersecting a main axis of the device, the first set of optical rotators comprising a first non-reciprocal optical rotator (NRR) and a first reciprocal optical rotator (RR); a second PBS optically coupled to the first set of optical rotators at a side opposite to the first PBS; and a first reflective non-linear interferometer (NLI) optically coupled to the second PBS at a side opposite to the first set of rotators for reflecting a linearly polarized light comprising a first set of channels and a second set of channels, wherein the first set of channels is reflected without a polarization plane rotation, wherein the second set of channels is reflected with a polarization plate rotation.