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Signal reshaping and noise suppression using photonic crystal Fano structures
- Source :
- Bekele, D A, Yu, Y, Hu, H, Guan, P, Galili, M, Ottaviano, L, Oxenløwe, L K, Yvind, K & Mørk, J 2018, ' Signal reshaping and noise suppression using photonic crystal Fano structures ', Optics Express, vol. 26, no. 15, pp. 19596-19605 . https://doi.org/10.1364/OE.26.019596
- Publication Year :
- 2018
-
Abstract
- We experimentally demonstrate the use of photonic crystal Fano resonances for reshaping optical data signals. We show that the combination of an asymmetric Fano resonance and carrier-induced nonlinear effects in a nanocavity can be used to realize a nonlinear power transfer function, which is a key functionality for optical signal regeneration, particularly for suppression of amplitude fluctuations of data signals. The experimental results are explained using simulations based on coupled-mode theory and also compared to the case of using conventional Lorentzian-shaped resonances. Using indium phosphide photonic crystal membrane structures, we demonstrate reshaping of 2 Gbit/s and 10 Gbit/s return-to-zero on-off keying (RZ-OOK) data signals at telecom wavelengths around 1550 nm. Eye diagrams of the reshaped signals show that amplitude noise fluctuations can be significantly suppressed. The reshaped signals are quantitatively analyzed using bit-error ratio (BER) measurements, which show up to 2 dB receiver sensitivity improvement at a BER of 10−9 compared to a degraded input noisy signal. Due toefficient light-matter interaction in the high-quality factor and small mode-volume photonic crystal nanocavity, low energy consumption, down to 104 fJ/bit and 41 fJ/bit for 2 Gbit/s and 10 Gbit/s, respectively, has been achieved. Device perspectives and limitations are discussed.
- Subjects :
- Physics
3D optical data storage
business.industry
Fano resonance
Physics::Optics
02 engineering and technology
Coupled mode theory
01 natural sciences
Signal
Atomic and Molecular Physics, and Optics
010309 optics
chemistry.chemical_compound
020210 optoelectronics & photonics
Optics
chemistry
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Indium phosphide
SDG 7 - Affordable and Clean Energy
business
Sensitivity (electronics)
Signal regeneration
Photonic crystal
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Bekele, D A, Yu, Y, Hu, H, Guan, P, Galili, M, Ottaviano, L, Oxenløwe, L K, Yvind, K & Mørk, J 2018, ' Signal reshaping and noise suppression using photonic crystal Fano structures ', Optics Express, vol. 26, no. 15, pp. 19596-19605 . https://doi.org/10.1364/OE.26.019596
- Accession number :
- edsair.doi.dedup.....e8ea3386af60c6e38f8c79c7104222b9