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Updated: Jun 23, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
Enhanced modulation bandwidth of nanocavity light emitting devices
Erwin K Lau1, Amit Lakhani, Rodney S Tucker
1Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA. elau@eecs.berkeley.edu
Abstract:
We show that the direct modulation bandwidth of nano-cavity light emitting devices (nLEDs) can greatly exceed that of any laser. By performing a detailed analysis, we show that the modulation bandwidth can be increased by the Purcell effect, but that this enhancement occurs only when the device is biased below the lasing threshold. The maximum bandwidth is shown to be inversely proportional to the square root of the modal volume, with sub-wavelength cavities necessary to exceed conventional laser speeds.

