Super-compact arrayed waveguide grating (AWG) wavelength division multiplexer based on sub-wavelength grating
US11860411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2022 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Nov 4, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12164
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A super-compact arrayed waveguide grating (AWG) wavelength division multiplexer based on a sub-wavelength grating is provided and includes an input waveguide, a first planar waveguide, an arrayed waveguide, a second planar waveguide, and the output waveguide that are sequentially connected. The input waveguide has 1 port, and the output waveguide has 8 ports. The arrayed waveguide includes 50 equivalent uniform strip waveguides with the same length difference, and each of the equivalent uniform strip waveguides is configured as a sub-wavelength grating structure, thereby forming the effect of increasing group refractive index or transmission delay based on a slow light effect. The 8 channels with a channel spacing of 200 GHz have the minimum adjacent channel crosstalk of less than −27 dB, and the overall size is within 300×230 μm2. In the multiplexer, the overall integration size of the device is reduced by an order of magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.