US 12,413,311 B2
Optical transmission device and control method thereof for integrating multiple signal based on lithium niobate modulation
Hao Jin, Ningbo (CN); Fan Yang, Ningbo (CN); and Qikun Huang, Ningbo (CN)
Assigned to Global Technology Inc., Ningbo (CN)
Filed by Global Technology Inc., Ningbo (CN)
Filed on May 25, 2023, as Appl. No. 18/201,959.
Claims priority of application No. 202211443963.X (CN), filed on Nov. 18, 2022.
Prior Publication US 2024/0171278 A1, May 23, 2024
Int. Cl. H04B 10/2575 (2013.01); H04B 10/50 (2013.01)
CPC H04B 10/25753 (2013.01) [H04B 10/505 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An optical transmission device for integrating multiple signals based on lithium niobate modulation, comprising:
a laser configured to generate an initial optical signal;
a plurality of radio-frequency signal channels, each of the radio-frequency signal channels configured to transmit a radio-frequency modulation signal;
a plurality of ground channels disposed in parallel with the plurality of radio-frequency signal channels and connected to the plurality of radio-frequency signal channels;
an input optical fiber connected to the laser and configured to receive the initial optical signal;
a front-end beam splitter disposed in the input optical fiber and configured to split the initial optical signal; and
a plurality of optical transmission units, each comprising:
a rear-end beam splitter connected to the front-end beam splitter and configured to split the initial optical signal that is split by the front-end beam splitter, to generate two optical splitting signals;
two optical splitting paths connected to the rear-end beam splitter and configured to transmit the two optical splitting signals, respectively;
an beam combiner connected to the two optical splitting paths and configured to combine the two optical splitting signals to generate an optical modulation signal; and
an output optical fiber connected to the beam combiner and configured to output the optical modulation signal;
wherein one of the plurality of radio-frequency signal channels is disposed between the two optical splitting paths, and two of the plurality of ground channels are disposed at two sides of the two optical splitting paths, to modulate the optical splitting signal with the radio-frequency modulation signal that corresponds to the optical splitting signal.