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Design of a Bragg fiber with large mode area for mid-infrared applications
, S. Dasgupta, R.K. Varshney, D.J. Richardson, B.P. Pal
Published in Optical Society of American (OSA)
Volume: 19
Issue: 22
Pages: 21295 - 21304
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 Optical Society of America.
About the journal
JournalOptics Express
PublisherOptical Society of American (OSA)