US 12,259,588 B2
Optical structure, optical coupling method, and photonic integrated circuit chip
Yichen Shen, Nanjing (CN); Huaiyu Meng, Nanjing (CN); Zhan Su, Nanjing (CN); Junjie Chen, Nanjing (CN); Jianhua Wu, Nanjing (CN); Yunpeng Zhu, Nanjing (CN); Hui Chen, Nanjing (CN); Zhiquan Xue, Nanjing (CN); and Ronald Gagnon, Nanjing (CN)
Assigned to Nanjing Guangzhiyuan Technology Co., Ltd., Nanjing (CN)
Filed by Nanjing Guangzhiyuan Technology Co., Ltd., Nanjing (CN)
Filed on Jul. 8, 2022, as Appl. No. 17/860,118.
Claims priority of application No. 202110777438.0 (CN), filed on Jul. 9, 2021.
Prior Publication US 2023/0008989 A1, Jan. 12, 2023
Int. Cl. G02B 6/42 (2006.01)
CPC G02B 6/425 (2013.01) [G02B 6/4214 (2013.01); G02B 6/4215 (2013.01); G02B 6/4286 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An optical structure, comprising: a first optical coupling structure and a plurality of the second optical coupling structures;
wherein the first optical coupling structure comprises a first optical transmission structure, and a first coupling port and a second coupling port both connected to the first optical transmission structure;
each second optical coupling structure comprises a second optical transmission structure, and a third coupling port and a photoelectric conversion structure both connected to the second optical transmission structure;
the first coupling port is used to input a first optical signal; the third coupling port comprises a grating coupler; the second optical coupling structure further comprises a power splitter connected to the third coupling port and used to perform an optical splitting processing on a second optical signal to obtain a first optical splitting signal and a second optical splitting signal; the second optical transmission structure comprises a first substructure connected to the photoelectric conversion structure, and a second substructure; the first substructure is used to transmit the first optical splitting signal; the photoelectric conversion structure is used to detect a signal intensity of the first optical splitting signal; and the second substructure is used to transmit the second optical splitting signal;
the plurality of the second optical coupling structures comprise a first second optical coupling structure and a second second optical coupling structure; and a distance between the third coupling port included in the first second optical coupling structure and the third coupling port included in the second second optical coupling structure is equal to a preset distance, the preset distance being a distance between light sources respectively corresponding to the third coupling port included in the first second optical coupling structure and the third coupling port included in the second second optical coupling structure.