Abstract
The dynamics of gas flow in a hollow core photonic bandgap fiber is studied over four decades of pressure covering free molecular flow as well as hydrodynamic flow. Expressions are derived that allow for determination of the pressure inside the fiber as a function of time and position in the limits of Knudsen number and . The expressions, which are validated by using absorption lines of acetylene as probes of the pressure inside the fiber, provide a straightforward way of predicting the temporal response for gas sensors of any fiber geometry.
© 2008 Optical Society of America
Full Article | PDF ArticleMore Like This
R. Wynne and B. Barabadi
Appl. Opt. 54(7) 1751-1757 (2015)
Billah M. Masum, Saiied M. Aminossadati, Mehmet S. Kizil, and Christopher R. Leonardi
Appl. Opt. 58(4) 963-972 (2019)
Charlotte I. Falk, Jan Hald, Jan C. Petersen, and Jens K. Lyngsø
Appl. Opt. 49(20) 3854-3859 (2010)