title: pH sensor using Langmuir-Blodgett overlays on polished optical fibers.
abstract: Evanescent coupling between a side-polished single-mode optical fiber and a single-mode, pH-sensitive Langmuir-Blodgett overlay is used to demonstrate an intrinsic fiber-optic pH sensor. The sensor shows a wavelength sensitivity of 18.8 +/- 0.8 nm/pH and a transmission sensitivity of 9.7 +/- 0.8 dB/pH when operating at 750 nm.
authors.forename: D
authors.initials: D
authors.lastname: Flannery
authors.forename: S W
authors.initials: SW
authors.lastname: James
authors.forename: R P
authors.initials: RP
authors.lastname: Tatam
authors.forename: G J
authors.initials: GJ
authors.lastname: Ashwell