Abstract
We investigate the intensity and phase response of optical switches based on a photonic crystal waveguide coupled to a nanocavity. In particular, we compare the performances of switches with traditional Lorentzian transmission spectrum to switches displaying an asymmetric Fano shape, as obtained by incorporating a partially transmitting element in the waveguide. Compared to traditional Lorentzian structures, the Fano structure shows improved switching contrast and speed without adding any extra phase modulation, corresponding to a much lower chirp parameter. Using a simple and ultracompact InP photonic-crystal Fano structure with broken mirror symmetry, we experimentally demonstrate 20-Gb/s all-optical switching with low-energy consumption.
Original language | English |
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Article number | 0600108 |
Journal | IEEE Photonics Journal |
Volume | 8 |
Issue number | 2 |
Number of pages | 9 |
ISSN | 1943-0655 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- Nonlinear optical devices
- Photonic crystals
- Fano resonance
- All-optical devices