Multiple passband microwave photonic filter with adjustable bandwidth
| Autor: | A. Vera-Marquina, L. A. Gonzalez-Mondragon, Alejandro García-Juárez, L. J. Quintero-Rodriguez, Ignacio E. Zaldivar-Huerta |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
business.industry Computer science Bandwidth (signal processing) Optical communication Filter (signal processing) 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Optics Band-pass filter 0103 physical sciences Electrical and Electronic Engineering business Passband Microwave Data transmission Diode |
| Zdroj: | Optics & Laser Technology. 126:106133 |
| ISSN: | 0030-3992 |
| DOI: | 10.1016/j.optlastec.2020.106133 |
| Popis: | We propose a straightforward technique that allows adjusting the bandwidth of microwave filtered signals by using two tunable optical bandpass filters. The principle of operation of the microwave photonic filter that allows the generation of passband windows is described by a full mathematical analysis. The electrical bandwidth of each generated passband window is adjusted by optically filtering a multimode laser diode. We demonstrate that the proposed filter can generate passband windows located at 4.87 GHz and 9.63 GHz exhibiting a bandwidth of 284.54 MHz and 391.24 MHz, respectively. The electrical bandwidth of each passband window can be increased to a maximum value of 1000 MHz by means of an adequate adjustment of the optical bandwidth from 2 nm to 10 nm approximately. A potential application of this proposal resides in the fact that the microwave filtered signals can be used as electrical carriers in optical communication schemes taking advantage of the electrical bandwidth that can be tailored according to a data transmission. |
| Databáze: | OpenAIRE |
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