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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 21295–21304

Design of a Bragg fiber with large mode area for mid-infrared applications

Somnath Ghosh, Sonali Dasgupta, Ravi K. Varshney, David. J. Richardson, and Bishnu P. Pal  »View Author Affiliations

Optics Express, Vol. 19, Issue 22, pp. 21295-21304 (2011)

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The design of an all-solid, soft glass-based, large mode area Bragg fiber for effective single mode operation with mode effective area exceeding 1100 µm2 across the wavelength range of 2 – 4 μm is reported. The design adopts a new strategy to induce large differential loss between the fundamental and higher order modes for effective single-mode operation within few tens of centimetres length of an otherwise multimode fiber. In addition to having the potential for the targeted application in high power laser delivery systems; complemented by a zero dispersion wavelength at 2.04 µm and rapidly developing mid-IR optical sources, the proposed fiber should also be attractive for generation of high power, single mode and less divergent supercontinuum light over this mid-IR window.

© 2011 OSA

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.4005) Fiber optics and optical communications : Microstructured fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: July 11, 2011
Revised Manuscript: September 8, 2011
Manuscript Accepted: September 8, 2011
Published: October 12, 2011

Somnath Ghosh, Sonali Dasgupta, Ravi K. Varshney, David. J. Richardson, and Bishnu P. Pal, "Design of a Bragg fiber with large mode area for mid-infrared applications," Opt. Express 19, 21295-21304 (2011)

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