Patent ID: 7039278

Claim:
A transceiver module for both transmitting and receiving optical data over single fiber-optic cable in a fiber-optic network, the transceiver module comprising: a substrate; an active component part comprising a laser diode and a photo diode disposed on the substrate; and a circulator disposed on the substrate and optically coupled to the active component part, the circulator having a first port optically coupled to the laser diode, wherein optical data input at the first port is output at a second port, the second port for transmitting and receiving optical data from the fiber-optic network, where optical data input at the second port is output at a third port that is optically coupled to the photo diode, the circulator further including: a plurality of polarization beam splitters; a plurality of garnets in optical communication with the plurality of polarization beam splitters; at least one waveplate in optical communication with the plurality of polarization beam splitters and the plurality of garnets; and at least one mirror in optical communication with the plurality of polarization beam splitters, the plurality of garnets and the at least one waveplate.