Abstract
This paper presents the frequency-dependent sensitivity of slab-coupled optical fiber sensors (SCOSs). This dependence is caused by the frequency characteristics of the relative permittivity. We show experimentally the frequency dependence of SCOS sensitivity for frequencies in the range of 1 kHz to 1 MHz for SCOS fabricated with both potassium titanyl phosphate (KTP) and lithium niobate (). We conclude that -cut KTP SCOSs are preferred for measuring fields above 300 kHz as they are more sensitive than -cut SCOSs to the higher frequency fields. However, since KTP SCOSs experience increasing permittivity for low frequencies, SCOSs made with may be used for low frequency sensing applications due to their flat sensitivity response. For a 10 kHz electric field, an cut SCOS is approximately more sensitive than an -cut KTP SCOS.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Spencer Chadderdon, Leeland Woodard, Daniel Perry, Richard H. Selfridge, and Stephen M. Schultz
Appl. Opt. 52(23) 5742-5747 (2013)
Spencer Chadderdon, Leeland Woodard, Daniel Perry, Richard H. Selfridge, and Stephen M. Schultz
Appl. Opt. 52(12) 2682-2687 (2013)
Daniel Perry, Spencer Chadderdon, Richard Forber, Wen C. Wang, Richard Selfridge, and Stephen Schultz
Appl. Opt. 52(9) 1968-1977 (2013)