Optical packet switching apparatus
View Patent ↗An optical packet switching apparatus includes an optical switch unit for switching the route of a received optical packet signal and output the received optical packet signal, and an optical switch control unit for extracting destination information from the received optical packet and generating a control signal for the optical switch unit according to the destination information. The optical switch control unit includes a clock generator for generating a plurality of local clocks of different phases, and a clock selector for selecting a local clock having the smallest phase difference with the received optical packet from the plurality of local clocks. The optical switch control unit generates the control signal using the local clock selected by the clock selector as an operation clock.
1. An optical packet switching apparatus, comprising:
an optical switch unit configured to switch a path of a received optical packet signal and output the received optical packet signal; and
an optical switch control unit configured to extract destination information from the received optical packet and configured to generate a control signal for the optical switch unit according to the destination information,
wherein the optical switch control unit includes a clock generator for generating a plurality of local clocks of different phases, and a clock selector for selecting a local clock having the smallest phase difference with the received optical packet from the plurality of local clocks, and
the optical switch control unit generates the control signal using the local clock selected by the clock selector as an operation clock.
2. The optical packet switching apparatus according to claim 1 , wherein the optical switch control unit further includes a frame synchronization unit for synchronizing frames of optical packet signals using the local clock selected by the clock selector as operation clock.
3. The optical packet switching apparatus according to claim 1 , wherein the optical switch control unit further includes a clock transfer unit for performing a transfer from a clock of the received optical packet signal to the local clock selected by the clock selector.
4. The optical packet switching apparatus according to claim 1 , wherein the optical switch control unit further includes an optical packet timing detector for generating an optical packet timing detection pulse that serves as a phase reference of the received optical packet signal, and
wherein the clock selector selects a local clock having the smallest phase difference with the optical packet timing detection pulse.