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Appl. Sci. 2018, 8(2), 223; https://doi.org/10.3390/app8020223

Theoretical Analysis of Directly Modulated Reflective Semiconductor Optical Amplifier Performance Enhancement by Microring Resonator-Based Notch Filtering

Lightwave Communications Research Group, Laboratory of Telecommunications Systems, Department of Electrical and Computer Engineering, Democritus University of Thrace, 67 100 Xanthi, Greece
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Received: 30 December 2017 / Revised: 26 January 2018 / Accepted: 28 January 2018 / Published: 1 February 2018
(This article belongs to the Special Issue Applications of Semiconductor Optical Amplifiers)
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Abstract

We demonstrate the feasibility of using a single microring resonator (MRR) as optical notch filter for enabling the direct modulation of a reflective semiconductor optical amplifier (RSOA) at more than tripled data rate than possible with the RSOA alone. We conduct a thorough simulation analysis to investigate and assess the impact of critical operating parameters on defined performance metrics, and we specify how the former must be selected so that the latter can become acceptable. By using an MRR of appropriate radius and detuning, the RSOA modulation bandwidth, which we explicitly quantify, can be extended to overcome the RSOA pattern-dependent performance limitations. Thus, the MRR makes the RSOA-encoded signal exhibit improved characteristics that can be exploited in practical RSOA direct modulation applications. View Full-Text
Keywords: direct modulation; microring resonator; optical notch filter; reflective semiconductor optical amplifier direct modulation; microring resonator; optical notch filter; reflective semiconductor optical amplifier
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Rizou, Z.V.; Zoiros, K.E. Theoretical Analysis of Directly Modulated Reflective Semiconductor Optical Amplifier Performance Enhancement by Microring Resonator-Based Notch Filtering. Appl. Sci. 2018, 8, 223.

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