US 12,244,353 B2
Optical module switch device
Kozo Shimizu, Atsugi (JP); and Hisakatsu Yamaguchi, Kawasaki (JP)
Assigned to Fujitsu Limited, Kawasaki (JP)
Filed by Fujitsu Limited, Kawasaki (JP)
Filed on Feb. 7, 2023, as Appl. No. 18/165,676.
Claims priority of application No. 2022-075762 (JP), filed on May 2, 2022.
Prior Publication US 2023/0353253 A1, Nov. 2, 2023
Int. Cl. H04B 10/80 (2013.01); H04B 10/50 (2013.01)
CPC H04B 10/801 (2013.01) [H04B 10/5051 (2013.01); H04B 10/5053 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical module switch device comprising:
a first serial-parallel converter coupled to first signal lines coupled to optical modules, and second signal lines, a number of the second signal lines being greater than a number of the first signal lines, and configured to transmit and receive first signals at a first transmission rate to and from the optical modules by using the first signal lines, respectively;
a second serial-parallel converter coupled to second signal lines coupled to the first serial-parallel converter, and third signal lines, a number of the third lines being greater than a number of the second signal lines, and configured to transmit and receive second signals at a second transmission rate lower than the first transmission rate to and from the first serial-parallel converter by using the second signal lines, respectively; and
a switch circuit coupled to the third signal lines, and configured to transmit and receive third signals at a third transmission rate lower than the second transmission rate to and from the second serial-parallel converter by using the third signal lines, respectively, to perform routing processing based on the received third signals,
wherein the switch circuit is configured to perform routing processing while maintaining synchronization of the signals transmitted between the first and second serial-parallel converters.