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.

Optical fiber management system and method

Abstract: An optical fiber ramp management system provides a system, device and method for organizing, managing and storing optical fiber during and after the production of an opto-electronic assembly. Opto-electronic components are arranged on a substrate located at a first level so as to define a space between the components. The space defines an optical fiber pathway along the surface of the substrate through which optical fibers formed as fiber bundle travel. A ramp supports the fiber bundle as it extends from the substrate to a storage tray located at a second level. The optical fibers are retained on the storage tray as a plurality of unconstrained loops. The pathway, ramp and tray are formed to maintain the radius of curvature of the optical fiber at or above the minimum bend radius of the fiber.

Low-loss, compact, and fabrication-tolerant Si-wire 90° waveguide bend using clothoid and normal curves for large scale photonic integrated circuits

Abstract: Ultimately low-loss 90° waveguide bend composed of clothoid and normal curves is proposed for dense optical interconnect photonic integrated circuits. By using clothoid curves at the input and output of 90° waveguide bend, straight and bent waveguides are smoothly connected without increasing the footprint. We found that there is an optimum ratio of clothoid curves in the bend and the bending loss can be significantly reduced compared with normal bend. 90% reduction of the bending loss for the bending radius of 4 μm is experimentally demonstrated with excellent agreement between theory and experiment. The performance is compared with the waveguide bend with offset, and the proposed bend is superior to the waveguide bend with offset in terms of fabrication tolerance.

Cable manager including nestable radius limiter

Abstract: A cable radius limiter having a radius limiting surface that prevents damage to cables due to excessive bending. The cable radius limiter includes mounting structure and cable retaining structure arranged such that the limiter can be operably oriented and mounted to a mounting bracket in both a first mounting orientation and a second mounting orientation. Two radius limiters can be mounted together to form a cable spool.

Vector magnetic field sensor based on U-bent single-mode fiber and magnetic fluid.

Abstract: A novel, compact, and easy fabrication vector magnetic field sensor has been proposed and investigated. The proposed sensor consists of a U-bent single-mode fiber fixed in a magnetic-fluid-filled vessel. Neither mechanical modification nor additional fiber grating is needed during the sensor fabrication. The results show that the response of magnetic fluid to magnetic field can be used to measure the direction and intensity of magnetic field via whispering gallery modes supported by the U-bent fiber structure with suitable bending radius. The sensitivity of direction is 0.251 nm/°, and the maximum magnetic field intensity sensitivity is 0.517 nm/mT. Besides, the results of this work prove the feasibility for realizing vector magnetic sensors based on other bending structures (such as bending multimode interference, bending SPR structure) in the future.

Rotating radius limiter for cable management panel and methods

Abstract: A rotating radius limiter for an optical fiber cable management panel is provided. The radius limiter includes a radius limiter structure and a bracket that permit relative motion between the structure and the bracket. The structure and bracket are mounted to a sliding cable management panel. The radius limiter structure includes a curved wall, an opening for receiving cables and a trough section for retaining cables about a radius portion.