Investigation of 2D-WH/TS OCDMA Code Stability in Systems with SOA-Based Device
This paper investigates for the first time how the implementation of semiconductor optical amplifier (SOA)-based devices in photonic networks can negatively impact the integrity of two-dimensional wavelength-hopping time-spreading (2D-WH/TS) optical code-division multiple access (OCDMA) codes based...
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MDPI AG
2020-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/21/7943 |
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| author | Mohamed Abuhelala Umair A. Korai Anderson L. Sanches Wing C. Kwong Ivan Glesk |
| author_facet | Mohamed Abuhelala Umair A. Korai Anderson L. Sanches Wing C. Kwong Ivan Glesk |
| author_sort | Mohamed Abuhelala |
| collection | DOAJ |
| description | This paper investigates for the first time how the implementation of semiconductor optical amplifier (SOA)-based devices in photonic networks can negatively impact the integrity of two-dimensional wavelength-hopping time-spreading (2D-WH/TS) optical code-division multiple access (OCDMA) codes based on multi-wavelength picosecond code carriers. It is demonstrated and confirmed by simulations that the influence of an SOA under driving currents of 50 mA to 250 mA causes a 0.08 to 0.8 nm multi-wavelength picosecond code carriers’ wavelength redshift. The results obtained are then used to calculate the degradation of OCDMA system performance in terms of the probability of error <i>Pe</i> and the decrease in the number of simultaneous users. It is shown that, when the SOA-induced 0.8 nm code carriers redshift becomes equal to the code carries wavelength channel spacing, the (8,53)-OCDMA system performs only as a (7,53)-OCDMA system, and the number of simultaneous users drops from 14 to 10 or 84 to 74 with the forward error correction (FEC) <i>Pe</i> of 10<sup>−9</sup>, respectively. The impact of the 0.8 nm redshift is then shown on a (4,53)-OCDMA system, where it causes a drop in the number of simultaneous users from 4 to 3 or 37 to 24 with the FEC <i>Pe</i> of 10<sup>−9</sup>, respectively. |
| first_indexed | 2024-03-10T15:00:18Z |
| format | Article |
| id | doaj.art-e6fa930a942e4de0999965c50071bcdb |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T15:00:18Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-e6fa930a942e4de0999965c50071bcdb2023-11-20T20:18:17ZengMDPI AGApplied Sciences2076-34172020-11-011021794310.3390/app10217943Investigation of 2D-WH/TS OCDMA Code Stability in Systems with SOA-Based DeviceMohamed Abuhelala0Umair A. Korai1Anderson L. Sanches2Wing C. Kwong3Ivan Glesk4Electronic and Electrical Engineering Department, University of Strathclyde, Glasgow G1 1XQ, UKElectronic and Electrical Engineering Department, University of Strathclyde, Glasgow G1 1XQ, UKElectronic and Electrical Engineering Department, University of Strathclyde, Glasgow G1 1XQ, UKDepartment of Engineering, Hofstra University, Hempstead, NY 11549, USAElectronic and Electrical Engineering Department, University of Strathclyde, Glasgow G1 1XQ, UKThis paper investigates for the first time how the implementation of semiconductor optical amplifier (SOA)-based devices in photonic networks can negatively impact the integrity of two-dimensional wavelength-hopping time-spreading (2D-WH/TS) optical code-division multiple access (OCDMA) codes based on multi-wavelength picosecond code carriers. It is demonstrated and confirmed by simulations that the influence of an SOA under driving currents of 50 mA to 250 mA causes a 0.08 to 0.8 nm multi-wavelength picosecond code carriers’ wavelength redshift. The results obtained are then used to calculate the degradation of OCDMA system performance in terms of the probability of error <i>Pe</i> and the decrease in the number of simultaneous users. It is shown that, when the SOA-induced 0.8 nm code carriers redshift becomes equal to the code carries wavelength channel spacing, the (8,53)-OCDMA system performs only as a (7,53)-OCDMA system, and the number of simultaneous users drops from 14 to 10 or 84 to 74 with the forward error correction (FEC) <i>Pe</i> of 10<sup>−9</sup>, respectively. The impact of the 0.8 nm redshift is then shown on a (4,53)-OCDMA system, where it causes a drop in the number of simultaneous users from 4 to 3 or 37 to 24 with the FEC <i>Pe</i> of 10<sup>−9</sup>, respectively.https://www.mdpi.com/2076-3417/10/21/7943optical code division multiple accesssemiconductor optical amplifiergain recovery timecode carriers redshiftbit error rate |
| spellingShingle | Mohamed Abuhelala Umair A. Korai Anderson L. Sanches Wing C. Kwong Ivan Glesk Investigation of 2D-WH/TS OCDMA Code Stability in Systems with SOA-Based Device Applied Sciences optical code division multiple access semiconductor optical amplifier gain recovery time code carriers redshift bit error rate |
| title | Investigation of 2D-WH/TS OCDMA Code Stability in Systems with SOA-Based Device |
| title_full | Investigation of 2D-WH/TS OCDMA Code Stability in Systems with SOA-Based Device |
| title_fullStr | Investigation of 2D-WH/TS OCDMA Code Stability in Systems with SOA-Based Device |
| title_full_unstemmed | Investigation of 2D-WH/TS OCDMA Code Stability in Systems with SOA-Based Device |
| title_short | Investigation of 2D-WH/TS OCDMA Code Stability in Systems with SOA-Based Device |
| title_sort | investigation of 2d wh ts ocdma code stability in systems with soa based device |
| topic | optical code division multiple access semiconductor optical amplifier gain recovery time code carriers redshift bit error rate |
| url | https://www.mdpi.com/2076-3417/10/21/7943 |
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