Enhanced optical frequency comb generation by pulsed gain-switching of optically injected semiconductor lasers

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URI: http://hdl.handle.net/10902/18414
ISSN: 1094-4087
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Autoría
Rosado, Alejandro; Pérez Serrano, A.; García Tijero, José Manuel; Valle Gutiérrez, ÁngelAutoridad Unican; Pesquera González, LuisAutoridad Unican; Esquivias, Ignacio
Fecha
2019-03
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© 2019 Optica Publishing Group under the terms of the Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
Publicado en
Optics Express Vol. 27, Issue 6, pp. 9155-9163
Editorial
The Optical Society (OSA)
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Resumen/Abstract
We report on the experimental generation of broad and flat optical frequency combs (OFC) in a 1550 nm laser diode using gain switching with pulsed electrical excitation together with optical injection. The combination of both techniques allows the generation of high-quality OFCs at a repetition frequency of 500 MHz, showing a low-noise optical spectrum with unprecedent features in terms of width (108 tones within 10 dB) and flatness (56 tones within 3 dB) in comparison with those previously reported for this modulation frequency. The influence of the injection conditions on the OFC quality is studied. Using these two techniques, it has been possible to reduce the separation between tones, generating high spectral performance OFCs with a repetition rateof 100 MHz.
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