#  Cascaded-mode interferometers 

 





March 26, 2025

 

 

Our latest publication demonstrates a novel cascaded-mode interferometer which uses interference of multiple transverse modes within a single multimode waveguide to achieve arbitrary spectral shapes in a compact geometry. Through the use of engineered gratings, Jinsheng Lu et al. demonstrate manipulation of multiple light modes on a silicon-on-insulator chip, thus enabling advanced spectral shaping in a device which could replace bulky, multi-component systems in sensing, communications, and quantum photonics.

See the publication in Science Advances [here](https://www.science.org/doi/10.1126/sciadv.adt4154), and the Harvard SEAS press release [here](https://seas.harvard.edu/news/2025/03/multimodal-light-manipulator).



 

 

 



 

 

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