Frequency Alteration Built on an Electro-Optical Sampling SOA–MZI Using a Differential Modulation Schema
In this paper, we present a real and simulated study of a frequency up mixing employing an electro-optical sampling semiconductor optical amplifier Mach–Zehnder interferometer (SOA–MZI) along with the differential modulation schema. The sampling signal is generated by an optical pulse clock (OPC) at...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Optics |
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| Online Access: | https://www.mdpi.com/2673-3269/3/3/22 |
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| author | Hassan Termos Ali Mansour |
| author_facet | Hassan Termos Ali Mansour |
| author_sort | Hassan Termos |
| collection | DOAJ |
| description | In this paper, we present a real and simulated study of a frequency up mixing employing an electro-optical sampling semiconductor optical amplifier Mach–Zehnder interferometer (SOA–MZI) along with the differential modulation schema. The sampling signal is generated by an optical pulse clock (OPC) at a frequency of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>f</mi><mi>s</mi></msub><mo>=</mo></mrow></semantics></math></inline-formula> 19.5 GHz. The quadratic phase shift keying (QPSK) signal at an intermediate frequency (IF) <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>f</mi><mrow><mi>I</mi><mi>F</mi></mrow></msub></mrow></semantics></math></inline-formula> is shifted to high frequencies <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>n</mi><msub><mi>f</mi><mi>s</mi></msub><mo> </mo><mo>±</mo><mo> </mo><msub><mi>f</mi><mrow><mi>I</mi><mi>F</mi></mrow></msub></mrow></semantics></math></inline-formula> at the SOA–MZI output. Using a simulator entitled Virtual Photonics Inc. (VPI), we generate sampled QPSK signals and analyze their merits during conversion gains and error vector magnitudes (EVMs). We conducted simulations of mixing in the SOA–MZI operating in a high-frequency band up to 195.5 GHz. The positive conversion gain is accomplished over the mixing frequencies. The EVM is used to evaluate the performance of the electro-optical sampling up-convertor. The EVM reaches 14% at a data rate of 5 Gbit/s at 195.5 GHz. During the experimental work, the results obtained in simulations are set side by side with the factual ones in the frequency range up to 59 GHz. Thus, the comparison between them confirms that they have approximately the same performance. |
| first_indexed | 2024-03-09T22:54:08Z |
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| id | doaj.art-593ac588e981432489d1b9a5a8186aa7 |
| institution | Directory Open Access Journal |
| issn | 2673-3269 |
| language | English |
| last_indexed | 2024-03-09T22:54:08Z |
| publishDate | 2022-07-01 |
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| series | Optics |
| spelling | doaj.art-593ac588e981432489d1b9a5a8186aa72023-11-23T18:14:12ZengMDPI AGOptics2673-32692022-07-013322523310.3390/opt3030022Frequency Alteration Built on an Electro-Optical Sampling SOA–MZI Using a Differential Modulation SchemaHassan Termos0Ali Mansour1Lab-STICC, CNRS UMR 6285, ENSTA Bretagne, 2 Rue François Verny, CEDEX 09, 29806 Brest, FranceLab-STICC, CNRS UMR 6285, ENSTA Bretagne, 2 Rue François Verny, CEDEX 09, 29806 Brest, FranceIn this paper, we present a real and simulated study of a frequency up mixing employing an electro-optical sampling semiconductor optical amplifier Mach–Zehnder interferometer (SOA–MZI) along with the differential modulation schema. The sampling signal is generated by an optical pulse clock (OPC) at a frequency of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>f</mi><mi>s</mi></msub><mo>=</mo></mrow></semantics></math></inline-formula> 19.5 GHz. The quadratic phase shift keying (QPSK) signal at an intermediate frequency (IF) <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>f</mi><mrow><mi>I</mi><mi>F</mi></mrow></msub></mrow></semantics></math></inline-formula> is shifted to high frequencies <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>n</mi><msub><mi>f</mi><mi>s</mi></msub><mo> </mo><mo>±</mo><mo> </mo><msub><mi>f</mi><mrow><mi>I</mi><mi>F</mi></mrow></msub></mrow></semantics></math></inline-formula> at the SOA–MZI output. Using a simulator entitled Virtual Photonics Inc. (VPI), we generate sampled QPSK signals and analyze their merits during conversion gains and error vector magnitudes (EVMs). We conducted simulations of mixing in the SOA–MZI operating in a high-frequency band up to 195.5 GHz. The positive conversion gain is accomplished over the mixing frequencies. The EVM is used to evaluate the performance of the electro-optical sampling up-convertor. The EVM reaches 14% at a data rate of 5 Gbit/s at 195.5 GHz. During the experimental work, the results obtained in simulations are set side by side with the factual ones in the frequency range up to 59 GHz. Thus, the comparison between them confirms that they have approximately the same performance.https://www.mdpi.com/2673-3269/3/3/22electro-optical sampling SOA–MZIfrequency up mixingquadratic phase shift keying |
| spellingShingle | Hassan Termos Ali Mansour Frequency Alteration Built on an Electro-Optical Sampling SOA–MZI Using a Differential Modulation Schema Optics electro-optical sampling SOA–MZI frequency up mixing quadratic phase shift keying |
| title | Frequency Alteration Built on an Electro-Optical Sampling SOA–MZI Using a Differential Modulation Schema |
| title_full | Frequency Alteration Built on an Electro-Optical Sampling SOA–MZI Using a Differential Modulation Schema |
| title_fullStr | Frequency Alteration Built on an Electro-Optical Sampling SOA–MZI Using a Differential Modulation Schema |
| title_full_unstemmed | Frequency Alteration Built on an Electro-Optical Sampling SOA–MZI Using a Differential Modulation Schema |
| title_short | Frequency Alteration Built on an Electro-Optical Sampling SOA–MZI Using a Differential Modulation Schema |
| title_sort | frequency alteration built on an electro optical sampling soa mzi using a differential modulation schema |
| topic | electro-optical sampling SOA–MZI frequency up mixing quadratic phase shift keying |
| url | https://www.mdpi.com/2673-3269/3/3/22 |
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