Polarization-Maintaining Large Mode Area Fiber Design for 2- μm Operation

Carlo Molardi, Biao Sun, Xia Yu, Annamaria Cucinotta, Stefano Selleri

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Large mode area polarizing maintaining (PM) photonic crystal fiber (PCF) designs, for 2- μm operation, are studied. A commercial PM-PCF optimized for 1- μm operation has been scaled to obtain an 80- μm -diameter core, and then numerically analyzed with the help of a finite-element method-based software to investigate its behavior at different values of bending radius. From the problems emerged by this design, a new optimized design has been proposed and numerically simulated. The new fiber consists in a thulium-doped 19-cell core with a diameter of 80 μm. The holes lattice, which follows the stack-and-draw scheme, has been modified to include two boron-doped stress applying parts, in order to induce a consistent birefringence. The results show that it is possible to achieve a single mode, single polarization operation, efficiently suppressing one of the fundamental mode (FM) polarization and the most significant higher order modes, in a range of bending radius from 33 to 40 cm. A remarkable value of 2600 μm2 has been registered for the effective area of the survived FM polarization.

Original languageEnglish
Article number7544557
Pages (from-to)2483-2486
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number22
Publication statusPublished - Nov 15 2016
Externally publishedYes


  • double-cladding photonic crystal fibers
  • single-mode regime
  • single-polarization fibers
  • Thulium-doped fibers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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