Bend radius

About: Bend radius is a research topic. Over the lifetime, 3303 publications have been published within this topic receiving 35415 citations. The topic is also known as: minimum bend radius.

Fiber-optic cable routing and bend limiting device

Abstract: A fiber-optic cable routing and bend limiting device having a base with a top surface that defines a plane. A bend limiter and a mounting plate extend generally perpendicular to and away from the plane at opposite ends of the base. A separation bar also extends generally perpendicular to and away from the plane and is positioned between the bend limiter and mounting plate. The bend limiter has a generally arcuately-shaped surface and a generally planar surface that enables adjacent placement of two fiber-optic cable routing and bend limiting devices constructed in accordance with an embodiment of the present invention. When two devices in accordance with the present invention are positioned adjacent each other with their respective planar surfaces confrontingly opposite each other, their respective arcuate surfaces define a generally continuous cable routing path between the two adjacently positioned devices.

Cable protector element

Abstract: The protection element (1) at least partially encloses the cable (2), for preventing it from being bent beyond a defined min. radius of curvature, to protect the cable from physical damage due to excessive bending. Pref. the protection element is formed in one piece and has a hollow cable guide which is curved in accordance with the min. curvature radius of the cable, with projections (4) spaced along the inside face of the guide for retaining the inserted cable.

A Modified Bend-Resistant Multitrench Fiber With Two Gaps

Abstract: We propose and investigate a modified multitrench fiber (MTF) design with two gaps numerically through the scalar FD-BPM algorithm. Excellent potential in mode area scaling, suppression of high-order modes (HOMs), and resistance to bending is demonstrated. Loss ratio between HOMs and the fundamental mode is more than 50 possibly over a wide range of high-index-ring thickness, gap width, bending radius, and bending orientation. Therefore, the required fabrication accuracy decreases. At 1050-nm wavelength and 20-cm bend radius, large effective mode area (920 μm2 ) is achievable with high loss ratio (>100). The fabricating technologies, carving grooves in the ordinary MTF and inserting rods in these grooves, can be possibly used to fabricate our modified two-gap-MTF.

Polarisation independent silicon-on-insulator slot waveguides.

Abstract: The minimisation of birefringence, or polarisation mode dispersion, is vital for simplifying and miniaturising photonic components. In this work, we present a systematic study of the slot waveguide geometries required for having zero birefringence (ZB). We show that the rail widths required for ZB are more strongly dependent on the height of the waveguide than on the slot separation. After which, we demonstrate that the ZB geometry is significantly affected by the slanting of the waveguide walls. This paper proceeds to show that within the range studied, one can fix the height, slot, slant angle, and bend radius, and still achieve ZB by varying the widths of both of the rails. Given a fabrication tolerance of 5 nm, we show that a coherence length on the order of a hundred microns can be achieved. We finish by showing that for straight and bent ZB waveguides, having symmetric rails is preferable due to higher tolerances and lower sensitivity to bending. Since any arbitrarily shaped slot waveguide is a combination of both single mode straight and bent waveguides, we have a toolbox from which we can achieve ZB for any given slot and height.