A compact device model along with simulations and an experimental analysis of a forward-biasedPNjunction-based silicon Mach-Zehndermodulator (MZM) with a phase-shifter length of 0.5 mm is presented. By placing the PN junction to a certain off-center such that72%of thewaveguide is p-doped, the refractive index swing at a given drive voltage swing is increased by 2% compared to the symmetric layout. The effects of the phase shifters’ length mismatch and asymmetric splitting on the modulation efficiency and extinction ratio of the modulator are simulated and compared with experimental results.Without any pre-emphasis or post-processing, a high-speed operation up to 15 Gb/s using a nonreturn-to-zero modulation format is demonstrated. A modulation efficiency (V πL) as low as 0.07 V × cm is verified and power consumption of 0.88 mW/Gb/s is recorded while a high extinction ratio of 33 dB is experimentally demonstrated. Compared to previously reported forward-biased silicon integrated modulators, without active tuning of the power splitting ratio between the arms, the extinction ratio is 10 dB higher. This MZM along with its compact structure is also sufficiently energy-efficient due to its low power consumption. Thus, it can be suitable for applications like analog signal processing and high-order amplitude modulation transmissions.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:91928 |
| Date | 11 June 2024 |
| Creators | Dev, Sourav, Singh, Karanveer, Hosseini, Reza, Misra, Arijit, Catuneanu, Mircea, Preußler, Stefan, Schneider, Thomas, Jamshidi, Kambiz |
| Publisher | IEEE - Institute of Electrical and Electronics Engineers |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 6616507, 10.1109/JPHOT.2022.3152612, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/Silicon-on-Insulator basierte Integrierte Optische Frequenzkämme für Mikrowellen-, THz- und Optische Anwendungen/322402243/, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/SPP 2111: Integrierte Elektronisch-Photonische Systeme für die Ultrabreitbandige Signalverarbeitung/403154102//Präziser Optischer Nyquist-Puls-Synthesizer DAC II/PONyDAC II |
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