First-order fiber Bragg grating inscription in indium fluoride fiber using a UV/Vis femtosecond laser and two-beam interferometry

Chiamenti I, Elsmann T, Reupert A, Kara O, Becker M, Wondraczek L, Chernysheva M (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Optics Letters Optical Society of America

Book Volume: 46

Pages Range: 1816-1819

Journal Issue: 8

DOI: 10.1364/OL.420264

Abstract

Fiber gratings are among key components in fiber-based photonics systems and, particularly, laser cavities. In the latter, they can play multiple roles, such as those of mirrors, polarizers, filters, or dispersion compensators. In this Letter, we present the inscription of highly reflective first-order fiber Bragg gratings (FBGs) in soft indium fluoride-based (InF3) fibers using a two-beam phase-mask interferometer and a femtosecond laser. We demonstrate an enhanced response of InF3-based fiber to a visible (400 nm) inscription wavelength compared to ultraviolet irradiation at 266 nm. In this way, FBGs with a reflectivity >99.7% were inscribed at around 1.9-mwith the bandwidth of 2.68 nm. After thermal annealing at 393K, the Bragg wavelength demonstrates stable thermal shift of 20 pm/K in the temperature range 293-373K. These observations suggest a potential extension of InF3 fiber-based laser components to an operational range of up to 5-m.

Authors with CRIS profile

Lothar Wondraczek

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) Leibniz-Institut für Photonische Technologien e.V. DE Germany (DE)

How to cite

APA:

Chiamenti, I., Elsmann, T., Reupert, A., Kara, O., Becker, M., Wondraczek, L., & Chernysheva, M. (2021). First-order fiber Bragg grating inscription in indium fluoride fiber using a UV/Vis femtosecond laser and two-beam interferometry. Optics Letters, 46(8), 1816-1819. https://doi.org/10.1364/OL.420264

MLA:

Chiamenti, Ismael, et al. "First-order fiber Bragg grating inscription in indium fluoride fiber using a UV/Vis femtosecond laser and two-beam interferometry." Optics Letters 46.8 (2021): 1816-1819.

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