US 12,117,712 B2
1 x N optical switch
Yusuke Muranaka, Musashino (JP); Tatsushi Nakahara, Musashino (JP); and Toshikazu Hashimoto, Musashino (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 17/769,553
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Oct. 18, 2019, PCT No. PCT/JP2019/041104
§ 371(c)(1), (2) Date Apr. 15, 2022,
PCT Pub. No. WO2021/075047, PCT Pub. Date Apr. 22, 2021.
Prior Publication US 2023/0194952 A1, Jun. 22, 2023
Int. Cl. G02F 1/313 (2006.01); G02F 1/035 (2006.01); G02F 1/21 (2006.01)
CPC G02F 1/3136 (2013.01) [G02F 1/035 (2013.01); G02F 1/212 (2021.01); G02F 1/3138 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A 1×N optical switch having a structure in which with respect to an optical switch, a driving circuit of the optical switch is integrated in a vicinity of a control electrode of the optical switch,
the optical switch comprising 2×2 optical switches and N optical gates,
wherein the 2×2 optical switches are different than the N optical gates,
wherein the driving circuit includes a driver for each of the 2×2 optical switches and a driver for each of the N optical gates;
wherein a first bias voltage (Vb) is set to the 2×2 optical switches and different a second bias voltage (Vb) is set to the N optical gates, and
a circuit form for the driver for each of the 2×2 optical switches and a circuit form for a driver for each of the N optical gates are the same.