Other

Yuanda Wu

Yue Wang

Jiashun Zhang

Xiaojie Yin

Jianguang Li

Hongjie Wang

Liangliang Wang

Junming An

Xiongwei Hu

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.

Adjustable wide-spectrum wavelength-insensitive directional coupler

Growing community of inventors

Hebi, China

Yuanda Wu