Patent ID: 11860411
Assignee: SOUTHWEST JIAOTONG UNIVERSITY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A super-compact arrayed waveguide grating (AWG) wavelength division multiplexer based on a sub-wavelength grating, comprising an input waveguide, a first planar waveguide, a sub-wavelength grating arrayed waveguide, a second planar waveguide, and an output waveguide, wherein the input waveguide, the first planar waveguide, the sub-wavelength grating arrayed waveguide, the second planar waveguide, and the output waveguide are silicon-based devices and sequentially connected;
the input waveguide has 1 port, and the output waveguide has 8 ports;
the sub-wavelength grating arrayed waveguide comprises 50 strip sub-wavelength gratings with a same length difference ΔL; each of the 50 strip sub-wavelength gratings is configured as an equivalent uniform waveguide;
the first planar waveguide and the second planar waveguide each have a basic structure of a Rowland circle, wherein the Rowland circle comprises a circle with a radius of R and an inscribed circle with a radius of R/2, and the first and second planar waveguides are symmetrically designed.