This Corning paper explains measurement behaviors of fusion spliced optical fibers and how glass properties and MFD (mode field diameter) differences across fiber splice junctions can lead to erroneous interpretations of splice loss when performing uni-directional OTDR (optical time domain reflectometer) tests. This paper explains how uni-directional OTDR test results yield misleading splice lo...

objectives : bone assessment is essential for diagnosis, treatment planning and prediction of prognosis of periodontal diseases. however, two-dimensional radiographic techniques have multiple limitations, mainly addressed by the introduction of three-dimensional imaging techniques such as cone beam computed tomography (cbct). this study aimed to assess the accuracy of cbct for detection of marg...

The high spatial resolution and high sensitivity inherent to optical frequency domain reflectometery enables precise measurements of distributed insertion loss and return loss events. The ability to compensate return loss for variable insertion loss greatly adds to the accuracy and practicality of measurements. Further, the capability of measuring the Rayleigh backscatter internal to the instru...