I comment on the recent Letter by Klimczak et al. [Opt. Lett. 38, 4679 (2013)], in which supercontinuum was generated in a tellurite glass photonic crystal fiber. However, my results show that in the midinfrared 3–6 μm region, the losses of their tellurite glass should be 1–2 orders of magnitude higher than what the authors claimed.
© 2014 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: December 24, 2013
Manuscript Accepted: February 9, 2014
Published: April 3, 2014
Xian Feng, "Broadband infrared supercontinuum generation in hexagonal-lattice tellurite photonic crystal fiber with dispersion optimized for pumping near 1560 nm: comment," Opt. Lett. 39, 2240-2240 (2014)