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Updated: Jun 23, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

All-fiber few-mode interference for complex azimuthal pattern generation.

Josué I Gómez-Méndez¹, Rodolfo A Carrillo-Betancourt², Daniel A May-Arrioja³

¹Applied Physics Group, DICIS, University of Guanajuato, 368850, Salamanca, Guanajuato, Mexico.

Scientific Reports

|April 22, 2024

Summary

This summary is machine-generated.

Researchers developed a simple all-fiber setup to generate complex light patterns by interfering few guided modes. This technique allows for controlled creation of intricate intensity patterns, potentially generating beams with orbital angular momentum (OAM).

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Last Updated: Jun 23, 2026

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Area of Science:

Optics and Photonics
Fiber Optics
Wave Phenomena

Background:

Generating complex light patterns is crucial for applications in optical communications and microscopy.
Controlling the interference of light modes within optical fibers offers a promising avenue for beam shaping.

Purpose of the Study:

To demonstrate a simple, all-fiber setup for generating complex optical intensity patterns.
To investigate the control over output patterns by manipulating guided modes in a few-mode fiber (FMF).

Main Methods:

Utilized a setup comprising a few-mode fiber (FMF) spliced to a multimodal interference (MMI) fiber device.
Excited two family modes in the MMI device, adjusting phase and intensity conditions of the FMF modal basis.
Analyzed the resulting output intensity patterns.

Main Results:

Successfully generated complex intensity patterns with radial and azimuthal symmetry.
Demonstrated control over output patterns by altering mode phases and intensities.
Observed potential for generating beams with orbital angular momentum (OAM).

Conclusions:

The proposed all-fiber setup offers a straightforward method for creating intricate light patterns.
This technique provides a versatile platform for generating structured light, including OAM beams.