Related Experiment Video
Updated: Jun 1, 2026

In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
Published on: May 27, 2013
Generation of Cerenkov radiation at 850 nm in higher-order-mode fiber
Ji Cheng1, Jennifer H Lee, Ke Wang
1School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA. jc875@cornell.edu
Abstract:
We demonstrate generation of Cerenkov radiation at 850 nm in a higher-order-mode (HOM) fiber. The LP02 mode in this solid, silica-based fiber has anomalous dispersion from 690 nm to 810 nm. Cerenkov radiation with 3 nJ pulse energy is generated in this module, exhibiting 60% energy conversion efficiency from the input. The HOM fiber provides a valuable fiber platform for nonlinear wavelength conversion with pulse energies in-between index-guided silica-core photonic crystal fibers and air-core photonic bandgap fibers.

