Mr. Andrea Tonini Profile

Andrea Tonini

at Diamond SA

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Proceedings Article | 28 February 2020 Presentation + Paper

Modular lensed-ferrule solution for single-mode fiber connectors

Andrea Tonini, Victor Coggi

Proceedings Volume 11286, 112860G (2020) https://doi.org/10.1117/12.2544272

KEYWORDS: Connectors, Diamond, Single mode fibers, Fiber optics, Reliability, Ceramics, Signal attenuation, Spherical lenses, Copper, Tolerancing

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The growing deployment of optical fiber in industrial, avionic, military and transportation applications, is leading to the increasing use of optical connectors requiring low insertion loss and mating workability. Connector contaminants are the main cause of power loss and signal degradation and the continuous need of cleaning services is a disadvantage for the fast replacement of copper wiring. Therefore, there is an increased need for reliable and maintenance-free optical connectors with insensitivity to dust, especially in a harsh environment. For this purpose, a novel and unique modular, single-mode lensed ferrule has been developed. Its compact form-factor fits into standard connectors bodies (E2000, MPO …) and enables the insensitivity to dust and mating-cycles reliability typical of bulky harsh environment lensed connectors. It is known that the alignment accuracy between a fiber and a lens must be under 1 um in order to attain acceptable insertion losses, which is particularly difficult to obtain. The use of exceedingly precise components and novel assembly techniques has made it possible, keeping ultra-low mechanical tolerances in the processing of ceramics and opto-mechanical parts. The result is highly repeatability and low insertion loss compared to standard state-of-the-art harsh-environment lensed connectors found in the field today. This opens new perspectives in the context of optical connections, where mating-cycles, insensitivity to dust, reliability and low losses ease the transition from copper to fiber. Furthermore, it enables new solutions for industrial data transmission and laser technology for many different applications in the field of spectroscopy, lidars, rotatory joints and much more.

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