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Novel Photonic Materials and Fabrication
Published papers (partial list)
- Brian Stern, Xiaoliang Zhu, Christine P. Chen, Lawrence D. Tzuang, Jaime Cardenas, Keren Bergman, and Michal Lipson, On-chip mode-division multiplexing switch, Optica, Vol. 2, No. 6, 29 May 2015.
- Cardenas, J., Poitras, C. B., Luke, K., Luo, L.-W., Morton, P. A., and Lipson, M., High coupling efficiency etched facet tapers in silicon waveguides, IEEE Phot. Tech. Lett.,, 30 Sept. 2014.
- Mouradian, S. L., Schroder, T., Poitras, C. B., Li, L., Goldstein, J., Chen, E. H., Cardenas, J., Markham, M. L., Twitchen, D. J., Lipson, M., and Englund, D., The Scalable Integration of long-lived quantum memories into a photonic circuit, arXiv:1409.7965, 30 Sept. 2014.
We developed a novel Etchless fabrication technique which results in low loss waveguides and resonators. This technique defines the structures with selective oxidation, resulting in waveguides and resonators that are never exposed to the etching plasma and have therefore ultra-smooth sidewalls.
We are also working on using grayscale lithography applied to transformation optics. Grayscale lithography, where the dose is modulated so that varying vertical resolutions are achieved, allows us to define graded-index multimode waveguides that have minimal inter-mode coupling.