We demonstrate a multi-purpose all-fiber design for gas-filled cavities based on hollow core photonic crystal fibers and on a specially designed fiber connector system. The connector system allows to evacuate and to fill the fiber core with a gaseous medium and keeping it pressure-tight. It also allows connecting the hollow core fiber to standard fibers. We demonstrate the flexibility and functionality by realizing three different all-fiber spectroscopic devices. Firstly, a single pass gas cell for linear absorption spectroscopy, secondly, a double pass gas cell and, thirdly, an all-fiber Fabry–Perot cavity for nonlinear saturation spectroscopy.
© 2010 IEEE
Patrick Thomas Marty, Jacques Morel, and Thomas Feurer, "All-Fiber Multi-Purpose Gas Cells and Their Applications in Spectroscopy," J. Lightwave Technol. 28, 1236-1240 (2010)