Optical access system

摘要

An optical access system is provided that enables subscriber terminals or termination devices to be interconnected via dedicated lines as needed, with respect to subscriber terminals or termination devices participating in an optical network.;The optical network is a network connecting a plurality of accommodating stations, and in this network, the accommodating stations have a plurality of optical line termination devices and optical path selection means, the subscriber side optical terminals or optical line termination devices are connected in single star optical paths, and the optical line termination devices in the accommodating stations are connected with the above mentioned optical terminals or optical line termination devices via the optical path selection means. In this optical network, in the case of a subscriber side optical terminal or optical line termination device (A) connecting to an optical line termination device (B) in an accommodating station (X), a dedicated optical line is established via the optical path selection means in the accommodating station, and in the case of a subscriber side optical terminal or optical line termination device (A) connecting to an optical line termination device (C) in another accommodating station (Y), a dedicated optical line is established via the optical path selection means in the accommodating station (X), the optical network, and the optical path selection means in the other accommodating station (Y).

主权项

1. An optical access system constituted as an optical network comprising:
a plurality of accommodating stations connected by optical paths to form an access network, one or more of the plurality of accommodating stations in the access network being connected to a core network, wherein the one or more of the plurality of accommodating stations comprises: one or more optical line termination devices; and an optical path selection means configured to connect one or more accommodating stations with one or more subscriber side optical terminals, wherein the optical path selection means of a first accommodating station among the plurality of accommodating stations is configured to establish a first dedicated optical path between the first accommodating station and a first subscriber side optical terminal among the one or more subscriber side optical terminals or a first optical line termination device, when the first subscriber side optical terminal or the first optical line termination device is to be connected to a second optical line termination device, the second optical line termination device being one of the one or more optical line termination devices in the first accommodating station, wherein the optical path selection means of the first accommodating station is configured to establish a second dedicated optical path between the first subscriber side optical terminal or the first optical line termination device and a third optical line termination device, the third optical line termination device being one of the one or more optical line termination devices in a second accommodating station among the plurality of accommodating stations, when the first subscriber side optical terminal or the first optical line termination device is to be connected to the third optical line termination device in the second accommodating station, the second dedicated optical path being mutually independent from the first dedicated optical path, and wherein the optical path selection means in at least one of the accommodating stations is configured to connect to an optical path selection means of the core network via (1) one or more optical path channels and (2) a logical network which is formed from at least one individually separable channel configured by an optical line termination device, an access network virtualization function control unit, a network gateway function control unit, a core network virtualization function control unit, and one or more transponders, included in the first or the second accommodating station.