High-speed all-optical thresholding via carrier lifetime tunability

Aashu Jha; Chaoran Huang; Thomas Ferreira De Lima; Paul R. Prucnal

doi:10.1364/OL.387497

High-speed all-optical thresholding via carrier lifetime tunability

Aashu Jha, Chaoran Huang, Thomas Ferreira De Lima, Paul R. Prucnal

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We theoretically study the effect of free-carrier lifetime on processing speed and strength of nonlinearity, pertaining to our all-optical thresholder. We find that optimal device performance necessitates tuning lifetime while optimizing for both speed and nonlinearity. We also experimentally demonstrate device processing speed improvement from 400 Mbps to 2.5 Gbps by incorporating PN-junction mediated free-carrier lifetime tuning mechanism. Our study on the significance of free-carrier lifetime is universally applicable to any optical signal processing system reliant on silicon photonic nonlinearities.

Original language	English (US)
Pages (from-to)	2287-2290
Number of pages	4
Journal	Optics Letters
Volume	45
Issue number	8
DOIs	https://doi.org/10.1364/OL.387497
State	Published - Apr 15 2020

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1364/OL.387497

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abstract = "We theoretically study the effect of free-carrier lifetime on processing speed and strength of nonlinearity, pertaining to our all-optical thresholder. We find that optimal device performance necessitates tuning lifetime while optimizing for both speed and nonlinearity. We also experimentally demonstrate device processing speed improvement from 400 Mbps to 2.5 Gbps by incorporating PN-junction mediated free-carrier lifetime tuning mechanism. Our study on the significance of free-carrier lifetime is universally applicable to any optical signal processing system reliant on silicon photonic nonlinearities.",

author = "Aashu Jha and Chaoran Huang and {De Lima}, {Thomas Ferreira} and Prucnal, {Paul R.}",

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AB - We theoretically study the effect of free-carrier lifetime on processing speed and strength of nonlinearity, pertaining to our all-optical thresholder. We find that optimal device performance necessitates tuning lifetime while optimizing for both speed and nonlinearity. We also experimentally demonstrate device processing speed improvement from 400 Mbps to 2.5 Gbps by incorporating PN-junction mediated free-carrier lifetime tuning mechanism. Our study on the significance of free-carrier lifetime is universally applicable to any optical signal processing system reliant on silicon photonic nonlinearities.

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High-speed all-optical thresholding via carrier lifetime tunability

Abstract

All Science Journal Classification (ASJC) codes

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