title: Looped back fiber mode for reduction of false alarm in leak detection using distributed optical fiber sensor.
abstract: Optical-fiber-based sensors have inherent advantages, such as immunity to electromagnetic interference, compared to the conventional sensors. Distributed optical fiber sensor (DOFS) systems, such as Raman and Brillouin distributed temperature sensors are used for leak detection. The inherent noise of fiber-based systems leads to occasional false alarms. In this paper, a methodology is proposed to overcome this. This uses a looped back fiber mode in DOFS and voting logic is employed to considerably reduce the false alarm rate.
authors.affiliation: Indira Gandhi Centre for Atomic Research, Kalpakkam, India 603102.
authors.forename: Pandian
authors.initials: P
authors.lastname: Chelliah
authors.forename: Kasinathan
authors.initials: K
authors.lastname: Murgesan
authors.forename: Sosamma
authors.initials: S
authors.lastname: Samvel
authors.forename: Babu Rao
authors.initials: BR
authors.lastname: Chelamchala
authors.forename: Jayakumar
authors.initials: J
authors.lastname: Tammana
authors.forename: Murali
authors.initials: M
authors.lastname: Nagarajan
authors.forename: Baldev
authors.initials: B
authors.lastname: Raj