Optical switching device, optical access network, optical switching method, program, and recording medium

An optical access network comprising:

• a center device;
• a plurality of remote devices;
• and
• an optical switching device for performing switching of a downlink optical signal sent by the center device and switching of an uplink optical signal sent by the remote device;
• wherein in the optical switching device,
• the downlink optical signal sent by the center device is converted to a first electrical signal, the first electrical signal is branched by a branching section such that a part of the first electrical signal is input to a control section configured to control a downlink optical switch section, the downlink optical signal being input to the downlink optical switch section, the first electrical signal is converted to a downlink optical signal and switching of the downlink optical signal is performed;
• and
• the switching of the uplink optical signal sent by the remote device is performed, the output uplink optical signal is converted to a second electrical signal, and the second electrical signal is converted to an uplink optical signal and sent to the center device.

A computer program for an optical switching device comprising a downlink optical switch section for switching a downlink optical signal sent by a center device and an uplink optical switch section for switching an uplink optical signal sent by a plurality of remote devices, the program causing the optical switching device to execute:

• converting the downlink optical signal sent by the center device to a first electrical signal;
• branching the electrical signal such that part of the electrical signal is input into a control section configured to control the downlink optical switch section;
• converting the first electrical signal to a downlink optical signal, and inputting the downlink optical signal to the downlink optical switch section;
• converting the uplink optical signal output from the uplink optical switch section to a second electrical signal;
• and
• converting the second electrical signal to an uplink optical signal, and sending the uplink optical signal to the center device,
• wherein the computer program is present in a computer-readable medium.