Abstract:
A continuous-mode wavelength converting apparatus, a burst-mode wavelength converting apparatus, a remote termination apparatus and a central office termination apparatus for converting a burst-mode upstream wavelength signal into a continuous-mode upstream wavelength signal, and thereby transmitting the signal to a long distance and increasing link capacity. The continuous-mode wavelength converting apparatus may convert a received burst-mode upstream electric signal into a continuous-mode upstream electric signal by inserting a first frame at the front of the signal as an indicator of a start of the signal, inserting a second frame at the end of the burst-mode upstream electric signal as an indicator of an end of the signal, and inserting an idle signal into at least one remaining region of the burst-mode upstream electric signal.
Abstract:
Provided is an Optical Line Terminal (OLT). The OLT may include a first Wavelength division multiplexer/demultiplexer (WDM MUX/DeMUX) to perform a wavelength demultiplexing on seed light received from a seed light source, and a second Wavelength division demultiplexer (WDM DeMUX) to receive, from at least one ONU/ONT, an upstream optical signal generated using the seed light having the wavelength demultiplexing performed, and to perform a wavelength multiplexing on the received upstream optical signal.
Abstract:
A remotely optically amplified passive optical network (PON) system, an optical line terminal, and a remote node, and an optical amplification and gain-clamping methods of the PON system are provided. The PON system generates pump light and transmits the generated pump light to an optical transmission line, amplifies primarily an optical signal by the pump light which pumps the optical transmission line, and amplifies secondarily the optical signal by the transmitted pump light which pumps a gain medium of a remote node while maintaining a gain of the optical signal by applying a gain-clamping method to the remote node.
Abstract:
A power saving apparatus for an optical line terminal (OLT) and an optical network unit (ONU) is provided. The power saving apparatus includes a determination unit configured to determine whether a data traffic is generated between the ONU and a customer premises equipment (CPE), and a control unit configured to perform control such that each of the OLT and the ONU are converted to a power saving mode if a result of the determination is that a data traffic is not generated.
Abstract:
A link setup method for a wavelength-division-multiplexing passive optical network (WDM PON) system. The system includes a service providing device, a local node, and a plurality of subscriber devices. The link setup method includes assigning an initial wavelength for communication between the service providing device and a new subscriber device to be installed in the local node. The assigning of the initial wavelength may be performed as a part of process for activating the subscriber device, and this procedure may be performed between a physical layer of the service providing device and a physical layer of the new subscriber device.