Work

Long-period fiber gratings spontaneously written by a mechanism markedly different from Hill grating formation

Year: 2010

Type: article

Abstract: Pumping a nonlinear germanosilicate fiber with intense near-infrared femtosecond laser pulses for supercontinuum generation may invoke multiphoton-assisted photosensitivity of glasses to write a long-period fiber grating. In sharp contrast to the spontaneous formation of a Hill grating that resonates with the writing wavelength through first-order diffraction, the long-period fiber grating resonates with the writing wavelength through second-order diffraction. This finding highlights the surprising light-matter interaction in a waveguide.

Source: Applied Physics Letters

DOI: 10.1063/1.3491842

Authors: H. Tu, S. Shin, R. John, S. A. Boppart

Institution: University of Illinois Urbana-Champaign

Language: English

Topic: Laser Material Processing Techniques

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: National Institutes of Health, National Cancer Institute, National Institute of Biomedical Imaging and Bioengineering