US 12,176,959 B2
High-speed optical transceiver
Yoshihiro Ogiso, Musashino (JP); Hiromasa Tanobe, Musashino (JP); Shogo Yamanaka, Musashino (JP); Josuke Ozaki, Musashino (JP); and Mitsuteru Ishikawa, Musashino (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 17/793,768
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Feb. 28, 2020, PCT No. PCT/JP2020/008469
§ 371(c)(1), (2) Date Jul. 19, 2022,
PCT Pub. No. WO2021/171599, PCT Pub. Date Sep. 2, 2021.
Prior Publication US 2023/0069120 A1, Mar. 2, 2023
Int. Cl. H04B 10/40 (2013.01); H04B 10/2575 (2013.01); H04B 10/80 (2013.01)
CPC H04B 10/803 (2013.01) [H04B 10/25759 (2013.01); H04B 10/40 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A high-speed optical transmission-reception apparatus comprising:
a digital-signal processing circuit;
at least one of an optical modulation module having at least a driver and an optical modulation device or an optical reception module having at least a transimpedance amplifier and an optical reception device;
a flexible printed circuit being used as a high-frequency interface for the optical modulation module and the optical reception module; and
a mechanism for connecting a high-frequency line pattern to the flexible printed circuit, the mechanism being provided on a package substrate of the digital-signal processing circuit,
wherein the package substrate and at least one of the optical modulation module or the optical reception module are directly connected by the flexible printed circuit, and
a 3 dB bandwidth of the optical modulation module or the optical reception module is higher than or equal to 50 GHz.