Thermo-optical effects in Tm-doped large mode area photonic crystal fibers

Carlo Molardi, Enrico Coscelli, Annamaria Cucinotta, Stefano Selleri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Designs of Tm-doped photonic crystal fibers for laser operation must take in account the strong thermo-optical effects due to the Tm quantum defect and the consequent corruption of the single mode guiding properties. A new fiber design with a ∼ 80 μm core diameter, based on the cladding mirror symmetry reduction is proposed and analyzed using a full-vector FEM-based modal solver. The thermal effects are investigated using a computationally efficient model. A large pitch fiber with similar core diameter, which represents the actual state-of-art of Tm-doped laser technology, has been investigated in order to have a basis of comparison. Optimizing some key parameters of the new symmetry free fiber, the possibility to achieve a wide band single mode operation under an heavy heat load of over 300 W/m is demonstrated. In particular a very high modal discrimination value larger than 0.5 is obtained.

Original languageEnglish
Title of host publicationFiber Lasers XI
Subtitle of host publicationTechnology, Systems, and Applications
PublisherSPIE
Volume8961
ISBN (Print)9780819498748
DOIs
Publication statusPublished - Jan 1 2014
Externally publishedYes
EventFiber Lasers XI: Technology, Systems, and Applications - San Francisco, CA, United States
Duration: Feb 3 2014Feb 6 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8961
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceFiber Lasers XI: Technology, Systems, and Applications
CountryUnited States
CitySan Francisco, CA
Period2/3/142/6/14

Keywords

  • Large mode area photonic crystal fibers
  • Reduced symmetry cladding
  • Thermal effects
  • Thulium-doped fibers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Molardi, C., Coscelli, E., Cucinotta, A., & Selleri, S. (2014). Thermo-optical effects in Tm-doped large mode area photonic crystal fibers. In Fiber Lasers XI: Technology, Systems, and Applications (Vol. 8961). [89612Q] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8961). SPIE. https://doi.org/10.1117/12.2039439