Journal article
Pulse carving using nanocavity-enhanced nonlinear effects in photonic crystal Fano structures
Department of Photonics Engineering, Technical University of Denmark1
Ultra-fast Optical Communication, Department of Photonics Engineering, Technical University of Denmark2
Centre of Excellence for Silicon Photonics for Optical Communications, Centers, Technical University of Denmark3
Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark4
We experimentally demonstrate the use of a photonic crystal Fano resonance for carving-out short pulses from long-duration input pulses. This is achieved by exploiting an asymmetric Fano resonance combined with carrier-induced nonlinear effects in a photonic crystal membrane structure. The use of a nanocavity concentrates the input field to a very small volume leading to an efficient nonlinear resonance shift that carves a short pulse out of the input pulse.
Here, we demonstrate shortening of ∼500 ps and ∼100 ps long pulses to ∼30 ps and ∼20 ps pulses, respectively. Furthermore, we demonstrate error-free low duty cycle return-to-zero signal generation at 2 Gbit/s with energy consumption down to ∼1 pJ/bit and power penalty of ∼2 dB. The device physics and limitations are analyzed using nonlinear coupled-mode theory.
Language: | English |
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Year: | 2018 |
Pages: | 955-958 |
ISSN: | 15394794 and 01469592 |
Types: | Journal article |
DOI: | 10.1364/OL.43.000955 |
ORCIDs: | Yu, Yi , Hu, Hao , Guan, Pengyu , Ottaviano, Luisa , Galili, Michael , Oxenløwe, Leif Katsuo , Yvind, Kresten , Mørk, Jesper and 0000-0003-2805-9744 |