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
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.
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