Single-longitudinal mode laser structure based on a very narrow filtering technique
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AuthorRodríguez Cobo, Luis; Quintela Incera, María Ángeles; Rota Rodrigo, Sergio; López Amo, Manuel; López Higuera, José Miguel
© 2013 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.21.010289. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Optics Express, 2013, 21(8), 10289–10294
The Optical Society (OSA)
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A narrow filtering technique based on the spectral overlapping of two uniform FBGs and applied to obtain a Single Longitudinal Mode (SLM) laser is proposed and demonstrated in this work. The two FBGs are spectrally detuned to reduce their coincident reflection response narrowing the equivalent filter bandwidth. A proof-of-concept linear laser has been built and tested exhibiting SLM operation even with temperature and strain variations.