The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2021
Filed:
Aug. 13, 2018
Henan Shijia Photons Technology Co., Ltd., Hebi, CN;
Liangliang Wang, Hebi, CN;
Jiashun Zhang, Hebi, CN;
Junming An, Hebi, CN;
Xiaojie Yin, Hebi, CN;
Jianguang Li, Hebi, CN;
Hongjie Wang, Hebi, CN;
Yuanda Wu, Hebi, CN;
Yue Wang, Hebi, CN;
Xiongwei Hu, Hebi, CN;
Other;
Abstract
An adjustable wide-spectrum wavelength-insensitive directional coupler, comprising a substrate (). A first-stage directional coupling structure (), a phase-shifting structure (), and a second-stage directional coupling structure () are sequentially connected and disposed on the substrate (). The phase-shifting structure () comprises a phase-shifting curved waveguide, a phase-shifting straight waveguide (), and a third modulation component (), wherein the third modulation component () is disposed on the phase-shifting curved waveguide. One end of the phase-shifting curved waveguide is connected to an output end of a directional coupled waveguide I () of the first-stage directional coupling structure (), and the other end of the phase-shifting curved waveguide is connected to an input end of a directional coupled waveguide III () of the second-stage directional coupling structure (). One end of the phase-shifting straight waveguide () is connected to an output end of a directional coupled waveguide II () of the first-stage directional coupling structure (), and the other end of the phase-shifting straight waveguide () is connected to an input end of a directional coupled waveguide IV () of the second-stage directional coupling structure (). The adjustable wide-spectrum wavelength-insensitive directional coupler achieves wide-spectrum wavelength-insensitivity, a wide spectrum of splitting-ratio adjustment and low loss, and is of a compact size for easy integration with other devices.