Sensor fiber having a multicore optical waveguide including fiber Bragg gratings

US9976880B2 · kind B2 · utility

Assignee

• S-fiber, GmbH · DE

Inventors

• Lothar Brehm · Jena, DE
• Jurgen Rosenkranz · Mönchengladbach, DE
• Otto Bernauer · Waiblingen, DE
• Ralitsa Rosenow · Jena, DE
• Armin Landers · Jena, DE
• Katrin Roessner · Jena, DE
• Robert Hanf · Eisenberg, DE

Key dates

• Filing date: Jul 26, 2013
• Grant date: May 22, 2018
• Expiry date: Jul 26, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/02076
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor fiber for the detection of changes of temperature, bending, and/or torsion includes a multicore optical waveguide with a fiber Bragg grating (FBG) structure. One embodiment contains at least two FBG cores and a surrounding cladding. The sensor fiber is characterized by one or more distinction and orientation means which produce a marker zone to assign and label each individual FBG core.