Fiber-optic depolarizer

US5457756A · kind A · utility

Assignee

• Deutsche Aerospace AG · DE

Inventors

• Engelbert Hartl · Munich, DE
• Reinhard Muller · Baden, CH
• Hans Poisel · Leinburg, DE

Key dates

• Filing date: Jul 12, 1993
• Grant date: Oct 10, 1995
• Expiry date: Jul 12, 2013

Classification

• Technology area (CPC G): Physics
• CPC primary: G01C19/721
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A process for the manufacturing a fiber optic depolarizer as well as an arrangement of that type uses two optical fiber sections which obtain the polarization planes of the light and which are connected with one another in such a manner that the principal axes of the optical fiber sections enclose an angle of 45.degree.. An optical fiber piece which obtains no polarization is inserted between the optical fiber sections whose principal axes enclose an angle of 45.degree., in that the optical fiber sections and the optical fiber piece are fixed to one another at their connecting areas. The principal axis orientations of the optical fiber sections are adjusted in such a manner that, in the case of a firm positioning of one of the two connecting areas by the torsional twisting of the other connecting area, an angle of 45.degree. is adjusted.