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Proceedings Paper

CGH-based real-time analysis of fiber Bragg gratings in few mode LMA fibers
Author(s): Markus Mundus; Jens U. Thomas; Christian Voigtländer; Ria G. Becker; Cesar Jauregui; Andreas Tünnermann; Stefan Nolte
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Paper Abstract

We report on a new approach for experimentally analyzing transversal mode coupling in few mode fiber Bragg gratings (FBGs). Utilizing a spatial light modulator (SLM) enables real-time modulation of the incident spatial light distribution coupled into the fiber. Thus, individual transversal fiber modes can be excited, allowing for effort-less mode switching and mode rotation. Simultaneously, the transmitted and reflected modes are analyzed. We use this setup to demonstrate LP mode discrimination by asymmetric FBGs which favor reflection of a designated LP11 mode orientation for few mode large mode area fibers.

Paper Details

Date Published: 15 February 2012
PDF: 10 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 823712 (15 February 2012); doi: 10.1117/12.910290
Show Author Affiliations
Markus Mundus, Friedrich-Schiller Univ. Jena (Germany)
Jens U. Thomas, Friedrich-Schiller Univ. Jena (Germany)
Christian Voigtländer, Friedrich-Schiller Univ. Jena (Germany)
Ria G. Becker, Friedrich-Schiller Univ. Jena (Germany)
Cesar Jauregui, Friedrich-Schiller Univ. Jena (Germany)
Andreas Tünnermann, Friedrich-Schiller Univ. Jena (Germany)
Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)
Stefan Nolte, Friedrich-Schiller Univ. Jena (Germany)
Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)


Published in SPIE Proceedings Vol. 8237:
Fiber Lasers IX: Technology, Systems, and Applications
Eric C. Honea; Sami T. Hendow, Editor(s)

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