2015
DOI: 10.1109/jlt.2014.2360500
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Fiber Loop Mirror Sensors Interrogated and Multiplexed by OTDR

Abstract: In this work two techniques for interrogation and multiplexing of fiber loop mirror (FLM) intensity sensors based on Optical Time Domain Reflectometer (OTDR) are proposed. These configurations enable series and parallel FLM sensor interrogation. A fiber taper characterized as a displacement sensor was used as the intensity sensor. The OTDR parameters were optimized in order to obtain the best results. The optimized parameters were 100 ns pulse width and 10 dB input signal attenuation which permitted to attain … Show more

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Cited by 6 publications
(3 citation statements)
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“…The two-ring topology structure was studied with two rings in series and in parallel. The OTDR can be implemented by interrogating a very wide range of sensors, including Fabry-Pérot Photonic Sensors 2 interferometer [6], long-period gratings (LPG) [7], singlemode-multimode-singlemode sensors [8], and fiber Bragg gratings [9]. In the first case, interrogating a Fabry-Pérot, the results present a much more similar spectrum comparing with the ones obtained by using a fiber ring resonator.…”
Section: Introductionmentioning
confidence: 99%
“…The two-ring topology structure was studied with two rings in series and in parallel. The OTDR can be implemented by interrogating a very wide range of sensors, including Fabry-Pérot Photonic Sensors 2 interferometer [6], long-period gratings (LPG) [7], singlemode-multimode-singlemode sensors [8], and fiber Bragg gratings [9]. In the first case, interrogating a Fabry-Pérot, the results present a much more similar spectrum comparing with the ones obtained by using a fiber ring resonator.…”
Section: Introductionmentioning
confidence: 99%
“…Early it was shown to be a promising device in measuring point‐by‐point losses, by using intensity sensors along the fiber. Several works have been reported in this area of research, where an OTDR is used to monitor sensors such as fiber Bragg gratings (FBGs) , long period gratings (LPGs) , multimode interference , fiber loop mirrors , and others. One of the main advantages is the quasi‐distributed monitoring along 100 km of fiber without the use of amplification .…”
Section: Introductionmentioning
confidence: 99%
“…Early it was shown to be a promising device in measuring point-by-point losses, by using intensity sensors along the fibre. Several works have been reported in this area of research, where an OTDR is used to monitor sensors such as fibre Bragg gratings (FBGs) [2], long period gratings (LPGs) [3], multimode interference (MMI) [4], fibre loop mirrors [5] and others. One of the main advantages is the quasi-distributed monitoring along 100 km of fibre without the use of amplification [1].…”
Section: Introductionmentioning
confidence: 99%