Photonic crystal fiber technology for monolithic single-mode large-mode-area all-solid amplifier

Simon L. Christensen; Sidsel R. Papior; Mette M. Johansen; Jakob M. Hauge; Johannes Weirich; Christian Jakobsen; Mattia Michieletto; Magalie Bondu; Marco Triches; Thomas T. Alkeskjold; Jesper Lægsgaard

doi:10.1117/12.2506995

7 March 2019 Photonic crystal fiber technology for monolithic single-mode large-mode-area all-solid amplifier

Simon L. Christensen, Sidsel R. Papior, Mette M. Johansen, Jakob M. Hauge, Johannes Weirich, Christian Jakobsen, Mattia Michieletto, Magalie Bondu, Marco Triches, Thomas T. Alkeskjold, Jesper Lægsgaard

Author Affiliations +

Proceedings Volume 10897, Fiber Lasers XVI: Technology and Systems; 108971L (2019) https://doi.org/10.1117/12.2506995
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

In this work, an all-solid Ytterbium doped double-clad single-mode (SM) large-mode-area (LMA) photonic crystal fiber (PCF) is characterized in a monolithic amplifier setup. The characterized all-solid PCF combines the SM operation of LMA PCFs while maintaining simple splicing of all-solid fibers. The fiber has been tested in a pulsed monolithic forward pumped amplifier system achieving excellent modal properties. The fiber is polarization maintaining and has a mode field diameter of approximately 24 μm. At optimal fiber length the output signal power of the amplifier was measured to 43 W limited by pump power with an optical to optical efficiency of 61 %. Polarization extinction ratios (PER) above 18 dB was observed for all fiber lengths. Simple splicing with splice losses < 0.2 dB and maintained polarization are reported using a standard Fujikura fusion splicer.

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Simon L. Christensen, Sidsel R. Papior, Mette M. Johansen, Jakob M. Hauge, Johannes Weirich, Christian Jakobsen, Mattia Michieletto, Magalie Bondu, Marco Triches, Thomas T. Alkeskjold, and Jesper Lægsgaard "Photonic crystal fiber technology for monolithic single-mode large-mode-area all-solid amplifier", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108971L (7 March 2019); https://doi.org/10.1117/12.2506995

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