Fano resonance control in a photonic crystal structure and its application to ultrafast switching

Yi Yu, Mikkel Heuck, Hao Hu, Weiqi Xue, Christophe Peucheret, Yaohui Chen, Leif Katsuo Oxenløwe, Kresten Yvind, Jesper Mørk

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We experimentally demonstrate a photonic crystal structure that allows easy and robust control of the Fano spectrum. Its operation relies on controlling the amplitude of light propagating along one of the light paths in the structure from which the Fano resonance is obtained. Short-pulse dynamic measurements show that besides drastically increasing the switching contrast, the transmission dynamics itself is strongly affected by the nature of the resonance. The influence of slow-recovery tails implied by a long carrier lifetime can thus be reduced using a Fano resonance due to a hitherto unrecognized reshaping effect of the nonlinear Fano transfer function. As an example, we present a system application of a Fano structure, demonstrating its advantages by the experimental realiza- tion of 10 Gbit/s all-optical modulation with optical control power less than 1mW.
Original languageEnglish
JournalApplied Physics Letters
Volume105
Issue number6
Pages (from-to)061117
Number of pages6
ISSN0003-6951
DOIs
Publication statusPublished - 2014

Fingerprint Dive into the research topics of 'Fano resonance control in a photonic crystal structure and its application to ultrafast switching'. Together they form a unique fingerprint.

Cite this