Tapered hollow-core fibers providing single-mode output in the 3.5um-7.8um spectral range

Marilena Giglio; Pietro Patimisco; Angelo Sampaolo; Pietro P. Calabrese; Jason M. Kriesel; Frank K. Tittel; Vincenzo Spagnolo

doi:10.1117/12.2288361

26 January 2018 Tapered hollow-core fibers providing single-mode output in the 3.5μm-7.8μm spectral range

Marilena Giglio, Pietro Patimisco, Angelo Sampaolo, Pietro P. Calabrese, Jason M. Kriesel, Frank K. Tittel, Vincenzo Spagnolo

Author Affiliations +

Proceedings Volume 10540, Quantum Sensing and Nano Electronics and Photonics XV; 105402L (2018) https://doi.org/10.1117/12.2288361
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

We report on an investigation of the optical performances of tapered hollow-core waveguides (HCWs) operating in the mid-IR spectral range. The HCW core diameter linearly increases over a fiber length of 50 cm. Five laser sources emitting in the range 3.5-7.8 μm were coupled with the HCWs by using a lens to focus the collimated beam at the waveguide entrance. We demonstrated single-mode circular-symmetric Gaussian-like beam profiles at HCW exit in all investigated spectral range, when operating with an HCW having core diameter varying from 200 μm to 260 μm, with slight variations in the measured propagation losses.

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Marilena Giglio, Pietro Patimisco, Angelo Sampaolo, Pietro P. Calabrese, Jason M. Kriesel, Frank K. Tittel, and Vincenzo Spagnolo "Tapered hollow-core fibers providing single-mode output in the 3.5μm-7.8μm spectral range", Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105402L (26 January 2018); https://doi.org/10.1117/12.2288361

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