THE PCS APPARATUS AND ETHERNET LAYER ARCHITECTURE FOR THE NETWORK-BASED TUNABLE WAVELENGTH PASSIVE OPTICAL NETWORK SYSTEM

A PCS(Physical Coding Sublayer) apparatus and the Ethernet layer architecture of a T-PON(Tunable-Wavelength Passive Optical Network System) having a wavelength variable type optical source are provided to support a wavelength initialization and alignment of an ONT(Optical Network Terminal) based on a PLC-ECL(Planar Lightwave Circuit-External Cavity Laser) by independently determining an ONT optical signal. A PCS apparatus of a T-PON having a wavelength variable type optical source includes a wavelength monitoring unit(615), and an automatic recognition unit(614), a transmission unit(611), and a receiving unit(612). The wavelength monitoring unit(615) extracts wavelength information from a digital frame signal transmitted from an ONT, and monitors whether the wavelength information is ONT optical source assignment wavelength information or not. If the wavelength information is not matched with the optical source assignment information of the ONT, the automatic recognition unit(614) adds wavelength control information to the digital frame signal and transmits the added information to the ONT. If the wavelength information is matched with the optical source assignment information of the ONT, the transmission unit(611) encodes and transmits the data transmitted from the ONT to a MAC layer. The receiving unit(612) decodes and receives data of the MAC layer.