Quantitative analysis of a III-V tapered horn-shaped metal-clad nano-cavity as an on-chip light source
Abstract
A horn-shaped metal-clad InGaAsP nano-cavity with sloped sidewalls is proposed as a platform for nanoscale light sources. The nano-cavity's physical dimensions are 350 × 350 × 350 nm^3, and its mode volume is 0.5 (λ_0/n)^3. In our numerical simulations and quantitative analysis, we have shown that the sloped sidewalls reduce metallic absorption and improve resonant mode confinement; and adjusting their slope from 0 to 16° increased the Q factor from 150 to 900 and laser modulation 3dB bandwidth from 4.3 to 36 GHz. The lasing threshold current was expected to be 35 μA at 16°. In a simulated feasibility study, we demonstrate 60 Gbps modulated laser signal (5 fJ/bit), producing 20 μW output power at the 1.5 μm wavelength with injection current 100 μA, as an implementation of horn-shaped nano-cavity platform to the low power and ultra-fast on-chip nano-laser.
Additional Information
© 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license(http://creativecommons.org/licenses/by/4.0/). Received 9 March 2017; accepted 10 July 2017; published online 31 July 2017. This work has been supported by the Moore Foundation, Intellectual Ventures, and the Heritage Medical Research Institute. We appreciate Zheng Li for helpful discussions and inspiring the project.Attached Files
Published - 1_2E4995590.pdf
Files
| Name | Size | Download all |
|---|---|---|
|
md5:214c3062bf84dad6bbde54e07ac03bdd
|
6.9 MB | Preview Download |
Additional details
- Eprint ID
- 79670
- Resolver ID
- CaltechAUTHORS:20170801-095250011
- Gordon and Betty Moore Foundation
- Intellectual Ventures
- Heritage Medical Research Institute
- Created
-
2017-08-01Created from EPrint's datestamp field
- Updated
-
2021-11-15Created from EPrint's last_modified field
- Caltech groups
- Heritage Medical Research Institute