Physics > Optics
[Submitted on 16 Mar 2018 (v1), last revised 3 Sep 2018 (this version, v2)]
Title:Inverse Design of Compact Multimode Cavity Couplers
View PDFAbstract:Efficient coupling between on-chip sources and cavities plays a key role in silicon photonics. However, despite the importance of this basic functionality, there are few systematic design tools to simultaneously control coupling between multiple modes in a compact resonator and a single waveguide. Here, we propose a large-scale adjoint optimization approach to produce wavelength-scale waveguide--cavity couplers operating over tunable and broad frequency bands. We numerically demonstrate couplers discovered by this method that can achieve critical, or nearly critical, coupling between multi-ring cavities and a single waveguide at up to six widely separated wavelengths spanning the $560$--$1500$~nm range of interest for on-chip nonlinear optical devices.
Submission history
From: Weiliang Jin [view email][v1] Fri, 16 Mar 2018 02:53:14 UTC (855 KB)
[v2] Mon, 3 Sep 2018 01:24:19 UTC (1,005 KB)
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