Improved thermal model for optical fibre coating owing to small bending diameter and high power signals

Evaluation of the temperature increase on the fiber fuse effect end point

“…Several authors have reported that after the fuse stoppage, the optical signal is scattered in the initial voids and coupled to non-guided modes [5], resulting in a local temperature increase due to the signal absorption in the coating [6]. In this context, the temperature at the fuse effect end position was measured with a thermal camera (ThermaCAM™, © FLIR Systems), in two different types of fiber: i) Bend insensitive fiber (G.657) from Fujikura (SR15E), and ii) standard single mode fiber SMF-28 (G.652.D) from Corning.…”

Cost effective refractive index sensor based on optical fiber micro cavities produced by the catastrophic fuse effect

“…To ignite the fiber fuse it is required an initial optical power density of 1.8 MW.cm -2 [14]. This irreversible destructive phenomenon creates a plasma (~3000 K) fuse region that moves continuously towards the optical source, vaporizing the fiber core and creating periodic voids structures as a result of the silica fiber core vaporization [15,16].…”

Improved method for the intraoffice infrastructure optical fiber fault location the based on reflectometric analyses

“…Also, there is a lack of optimized solutions in terms of efficiency and price to provide the optical fiber evaluation in the neighborhood of the transmitter (intraoffice section). Intraoffice is an environment that could benefit from continuous short‐reach monitoring technology because of inevitable channel impairments such as connector damaging/dirtiness, fiber patchcord bending/breakage, ribbon‐single fan‐out damage, imperfect fiber splicing, among others …”

“…Intraoffice is an environment that could benefit from continuous short-reach monitoring technology because of inevitable channel impairments such as connector damaging/dirtiness, fiber patchcord bending/breakage, ribbon-single fan-out damage, imperfect fiber splicing, among others. 4 The optical time-domain reflectometer (OTDR) is the best known and used technique to assess the optical fiber physical integrity. 3 However, the probe pulse generator makes the OTDR an expensive solution and, additionally, it is unsuitable to test short-length optical fibers links, since the reduction of the probe optical pulse width required to improve the spatial resolution, imposing a dead zone region.…”