Abstract
We present a new concept for a broadband coherent perfect absorber (CPA), utilizing the properties of white-light cavities. The designed structure attains coherent absorption over a wide spectrum (40 nm), overcoming the single-frequency limitation of conventional CPAs. A closed form analytic description is presented, supplemented by finite difference time-domain simulations for Si-based devices, demonstrating flat, wide-band power absorption. A new integrated-optics-based pulse absorber/terminator and optical modulator based on these devices are proposed and analyzed.
| Original language | English |
|---|---|
| Pages (from-to) | 6624-6627 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 39 |
| Issue number | 23 |
| DOIs | |
| State | Published - 1 Dec 2014 |