Photonic crystal fiber technology for high-performance all-fiber monolithic ultrafast fiber amplifiers

Sidsel R. Papior; Johannes Weirich; Mette M. Johansen; Christian Jakobsen; Mattia Michieletto; Marco Triches; Torben Kristensen; Anders S. Olesen; Christian Petersen; Thomas V. Andersen; Martin D. Maack; Thomas T. Alkeskjold

doi:10.1117/12.2287371

26 February 2018 Photonic crystal fiber technology for high-performance all-fiber monolithic ultrafast fiber amplifiers

Sidsel R. Papior, Johannes Weirich, Mette M. Johansen, Christian Jakobsen, Mattia Michieletto, Marco Triches, Torben Kristensen, Anders S. Olesen, Christian Petersen, Thomas V. Andersen, Martin D. Maack, Thomas T. Alkeskjold

Author Affiliations +

Proceedings Volume 10512, Fiber Lasers XV: Technology and Systems; 1051212 (2018) https://doi.org/10.1117/12.2287371
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

Photonic crystal fiber (PCF) technology for ultrafast fiber amplifiers traditionally uses air holes as key elements for large mode area (LMA) fiber designs. These air holes are crucial for the performance of high-end LMA PCFs, but makes splicing and interfacing more complex. To reduce this complexity in mid-range amplifiers, we present single-mode polarization-maintaining Yb-doped LMA PCFs without air holes for easier splicing into monolithic all-fiber amplifier designs.

A 30 μm core all-solid spliceable PCF is presented, and amplification of 1064 nm light above 50 W with an optical to optical efficiency of 80 % is demonstrated.

Furthermore, to demonstrate the excellent reliability of PCF based monolithic amplifiers, we demonstrate ultra-longterm performance data of > 35 khrs on a 14 μm core step-index type PCF amplifier with low long-term power degradation slope of < 1.5 % / 10,000 h.

Conference Presentation

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Sidsel R. Papior, Johannes Weirich, Mette M. Johansen, Christian Jakobsen, Mattia Michieletto, Marco Triches, Torben Kristensen, Anders S. Olesen, Christian Petersen, Thomas V. Andersen, Martin D. Maack, and Thomas T. Alkeskjold "Photonic crystal fiber technology for high-performance all-fiber monolithic ultrafast fiber amplifiers", Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 1051212 (26 February 2018); https://doi.org/10.1117/12.2287371

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