US 2012/0269516 A1 · OPTICAL TRANSCEIVER APPARATUS AND WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK SYSTEM

Abstract

An optical transceiver apparatus includes a gain medium, a photoelectric converter, at least one AWG, and a partial reflection mirror. The at least one AWG includes two common ports and multiple branch ports. One of the two common ports functions as a signal sending port, and the other functions as a signal receiving port, where bandwidth of the signal sending port is less than that of the signal receiving port. The gain medium and the photoelectric converter are connected to one of the branch ports of the AWG. The AWG and the partial reflection mirror are configured to cooperatively perform wavelength self-injection locking on an optical signal provided by the gain medium, and output the optical signal through the signal sending port. The AWG is further configured to demultiplex an optical signal received by the signal receiving port to a branch port. A WDM-PON system is also provided.

Claims20

Dependent claims

An optical transceiver apparatus, comprising a gain medium, a photoelectric converter, at least one arrayed waveguide grating (AWG), and a partial reflection mirror,

wherein:
the at least one AWG comprises two common ports and a plurality of branch ports, one of the common ports functions as a signal sending port, the other one of the common ports functions as a signal receiving port, and a bandwidth of the signal sending port is less than that of the signal receiving port;
and
the gain medium and the photoelectric converter are connected to one of the branch ports of the AWG, the AWG and the partial reflection mirror are configured to cooperatively perform wavelength self-injection locking on an optical signal provided by the gain medium, and output the optical signal through the signal sending port;
wherein the AWG is further configured to demultiplex an optical signal received by the signal receiving port to a corresponding branch port.

2 more elements

A wavelength division multiplexing passive optical network system, comprising an optical line terminal located at a central office and a plurality of optical network units located at user ends, wherein the optical line terminal is connected to the optical network units through fibers;

and
the optical line terminal comprises a plurality of optical transceiver apparatuses at the central office, wherein the optical transceiver apparatuses at the central office share an arrayed waveguide grating (AWG) at the central office, the AWG at the central office comprises two common ports and a plurality of branch ports, each optical transceiver apparatus at the central office is correspondingly connected to one of the branch ports of the AWG at the central office respectively, one of the common ports of the AWG at the central office functions as a signal sending port at the central office, and the other one of the common ports of the AWG at the central office functions as a signal receiving port at the central office, and bandwidth of the signal sending port at the central office is less than that of the signal sending port at the central office.

A passive optical network (PON) system, comprising:

a plurality of central office (CO) optical transceiver apparatuses sharing a central office array waveguide grating (CO-AWG);
and
a plurality of user end (UE) optical transceiver apparatuses sharing a remote node AWG (RN-AWG) and a partial reflection mirror (PRM);
wherein the RN-AWG is connected to the CO-AWG via a fiber, and comprises two common ports and a plurality of branch ports, each UE optical transceiver comprises a gain medium connected to a respective one of the branch ports of the RN-AWG, one of the common ports of the RN-AWG serves as a UE signal sending port and is connected to the fiber via the RPM, the other one of the common ports of the RN-AWG serves as a UE signal receiving port and is connected to the fiber, and a bandwidth of the UE signal sending port is less than that of the UE signal sending port;
wherein the gain medium, the RN-AWG the PRM are configured to cooperatively perform wavelength self-injection locking on a first optical signal provided by the gain medium, and output the first optical signal to the fiber through the UE signal sending port;
wherein the AWG is further configured to demultiplex a second optical signal received by the UE signal receiving port from the fiber to a corresponding branch port.

3 more elements

Dependencies are inferred from the claim text.

Optical transceiver apparatus and wavelength division multiplexing passive optical network system

Life of this patent

Optical transceiver apparatus and wavelength division multiplexing passive optical network system

Life of this patent

Abstract

Claims20