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Li M, Deng Y, Tang J, Sun S, Yao J, Azaña J, Zhu N. Reconfigurable Optical Signal Processing Based on a Distributed Feedback Semiconductor Optical Amplifier. Sci Rep 2016; 6:19985. [PMID: 26813252 PMCID: PMC4728479 DOI: 10.1038/srep19985] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 12/18/2015] [Indexed: 11/26/2022] Open
Abstract
All-optical signal processing has been considered a solution to overcome the bandwidth and speed limitations imposed by conventional electronic-based systems. Over the last few years, an impressive range of all-optical signal processors have been proposed, but few of them come with reconfigurability, a feature highly needed for practical signal processing applications. Here we propose and experimentally demonstrate an analog optical signal processor based on a phase-shifted distributed feedback semiconductor optical amplifier (DFB-SOA) and an optical filter. The proposed analog optical signal processor can be reconfigured to perform signal processing functions including ordinary differential equation solving and temporal intensity differentiation. The reconfigurability is achieved by controlling the injection currents. Our demonstration provitdes a simple and effective solution for all-optical signal processing and computing.
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Affiliation(s)
- Ming Li
- Institute of Semiconductors, Chinese Academy of Sciences, No. 35, Tsinghua East Road, Beijing, 100083, China
| | - Ye Deng
- Institute of Semiconductors, Chinese Academy of Sciences, No. 35, Tsinghua East Road, Beijing, 100083, China
| | - Jian Tang
- Institute of Semiconductors, Chinese Academy of Sciences, No. 35, Tsinghua East Road, Beijing, 100083, China
| | - Shuqian Sun
- Institute of Semiconductors, Chinese Academy of Sciences, No. 35, Tsinghua East Road, Beijing, 100083, China
| | - Jianping Yao
- Microwave Photonics Research Laboratory, School of Information Technology and Engineering, University of Ottawa, 800 King Edward Avenue, ON K1N 6N5, Canada
| | - José Azaña
- Institut National de la Recherche Scientifique - Énergie, Matériaux et Télécommunications (INRS-EMT), Varennes, Québec, J3X 1S2 Canada
| | - Ninghua Zhu
- Institute of Semiconductors, Chinese Academy of Sciences, No. 35, Tsinghua East Road, Beijing, 100083, China
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Liu G, Wu C, Wang F, Zhang T, Shang C, Gao K. Measurement of the linewidth enhancement factor based on nonlinear polarization rotation of semiconductor optical amplifier. APPLIED OPTICS 2015; 54:5162-5166. [PMID: 26192679 DOI: 10.1364/ao.54.005162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A simple measurement scheme of the linewidth enhancement factor based on the nonlinear polarization rotation of a semiconductor optical amplifier is proposed. Considering the polarization dependent gain, the relationship between the linewidth enhancement factor and the Stokes vector was derived theoretically. It is proven that the linewidth enhancement factor can be calculated directly from the Stokes parameters without any other assistant measurement system. The results demonstrate that the linewidth enhancement factor varies in a small range from 10.5 to 8.5 for TE mode and from 8.2 to 5.8 for TM mode, respectively, when the input optical power varies from 50 μW to 1 mW and the bias current varies from 90 to 170 mA.
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