An evanescent field-sensing configuration, based on a periodically segmented waveguide, is proposed and analyzed. It has advantages over existing configurations that relate to its simple realization (in single-step lithography). The sensitivity and operating point can be controlled easily with geometric parameters alone, which facilitates realization of more complex sensing arrays.
© 1997 Optical Society of America
Original Manuscript: June 7, 1995
Revised Manuscript: July 18, 1996
Published: February 20, 1997
Z. Weissman, "Evanescent field sensors with periodically segmented waveguides," Appl. Opt. 36, 1218-1222 (1997)