All‐optical wavelet‐based orthogonal frequency division multiplexing system based on silicon photonic integrated components
| Autor: | Yosef Ben Ezra, Dvir Munk, Ran Califa, Avinoam Zadok, Boris I. Lembrikov |
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| Rok vydání: | 2016 |
| Předmět: |
Silicon photonics
Orthogonal frequency-division multiplexing Computer science Optical communication 02 engineering and technology Spectral efficiency Multiplexing Atomic and Molecular Physics and Optics Cyclic prefix 020210 optoelectronics & photonics Wavelet 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering Optical filter |
| Zdroj: | IET Optoelectronics. 10:44-50 |
| ISSN: | 1751-8776 |
| DOI: | 10.1049/iet-opt.2015.0064 |
| Popis: | In this study, the authors discuss in detail the implementation of all-optical orthogonal frequency-division multiplexing system based on discrete wavelet packet transform (DWPT) by using silicon-on-insulator (SOI) cascaded Mach–Zehnder interferometers (MZIs). DWPT can be used in the multiplexing and de-multiplexing of data channels in coherent optical communication in order to improve spectral efficiency excluding a cyclic prefix. DWPT and inverse-DWPT may be realised in an integrated-photonic MZI platform. They demonstrated experimentally the post-fabrication tuning of 1 × 4 cascaded MZI de-multiplexing filters. Tuning procedures effectively overcome fabrication tolerances and meet the target transfer function of the devices. The fabrication platform represents an essential stepping-stone toward the all-optical realisation of DWPT-based multiplexing. |
| Databáze: | OpenAIRE |
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