Optical node, rotation angle deviation compensation system and rotation angle deviation compensation method

Abstract

An object of the present invention is to provide an optical node capable of compensating for a rotation angle deviation of an optical fiber core of a ferrule rotation type optical switch and reducing a connection loss generated in the optical switch. An optical node according to the present disclosure includes: an input-side optical port to which optical test light is input; a first optical switch connected to the input-side optical port and having a plurality of channels; a first rotation mechanism that rotates the first optical switch; a second optical switch connected to the first optical switch and having a plurality of channels; a second rotation mechanism that rotates the second optical switch; an output-side port which is connected to the second optical switch and from which the optical test light is output; an optical port monitoring unit that performs optical intensity measurement of the optical test light passing through the output-side port; and an optical node control unit that is connected to the first rotation mechanism, the second rotation mechanism, and the optical port monitoring unit, causes the optical port monitoring unit to perform the optical intensity measurement after rotating the optical switch by a minute angle for each of a designated channel of the first optical switch and a designated channel of the second optical switch, extracts a rotation angle of the optical switch at which the optical intensity of the optical test light becomes a maximum value, and performs rotation angle deviation compensation for updating a database representing the rotation angle of each designated channel.

Dependencies are inferred from the claim text.