Journal: Sensors (Basel, Switzerland)

Article Title: Graphical Optimization of Spectral Shift Reconstructions for Optical Backscatter Reflectometry

doi: 10.3390/s21186154

Figure Lengend Snippet: ( a ) Optical backscatter reflectometry (OBR) schematic showing how a tunable laser source (TLS) is used to produce an interference pattern resulting from Rayleigh backscatter along the fiber under test (FUT). The S - and P -polarization states are recorded separately by photodiodes P D S and P D P , respectively. The Fourier-transformed measurements are discretized into individual sensors or gauges (with indices n 0 , n 1 , … n N ) that can be analyzed separately to provide spatially distributed measurements. ( b ) Schematic of Rayleigh backscatter in a step-index singlemode optical fiber with light propagating through the fiber and reflected by local scattering centers.

Article Snippet: The non-grated fiber tests were performed with an ordinary singlemode optical fiber (SMF-28; Corning Incorporated, Corning, NY, USA) that was terminated with a 10 cm coreless termination fiber (FG125LA; ThorLabs, Newton, NJ, USA) and freely suspended in a furnace (HF TAP 1210B; Evenheat Kiln, Inc., Caseville, MI, USA) during heating to temperatures of 100, 350, 550, 750, and 950 °C.

Techniques: Transformation Assay