Patent ID: 7933521

Claim:
An integrated multiplexing and demultiplexing assembly, comprising: a transmissive block; a first optical subassembly associated with a first wavelength and arranged to interface with a plurality of external ports through the transmissive block; a second optical subassembly associated with a second wavelength and arranged to interface with a plurality of external ports through the transmissive block; a first filter positioned between the transmissive block and the first optical subassembly and configured to transmit signals associated with the first wavelength while reflecting other signals incident thereon; and a second filter positioned between the transmissive block and the second optical subassembly and configured to transmit signals associated with the second wavelength while reflecting other signals incident thereon, wherein the plurality of external ports includes a transmitter port adapted to transmit a first multiplexed optical signal and a receiver port adapted to receive a second multiplexed optical signal and each of the first and second optical subassemblies includes a transmitter and a detector, the first multiplexed optical signal being comprised of optical signals received from the transmitters of each optical subassembly along a reflective transmit path defined in the transmissive block, and the second multiplexed optical signal being comprised of optical signals transmitted to the detectors of each optical subassembly along a reflective receive path defined in the transmissive block.