Imaging micro lens array beam integrator system design for fiber injection

Fred M. Dickey; Todd E. Lizotte

doi:10.1117/12.896738

21 September 2011 Imaging micro lens array beam integrator system design for fiber injection

Fred M. Dickey, Todd E. Lizotte

Proceedings Volume 8130, Laser Beam Shaping XII; 81300N (2011) https://doi.org/10.1117/12.896738
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

This paper documents the design, analysis and testing of Micro Lens Array (MLA) beam integrator systems for the investigation of the injection of a single mode laser into square and round fibers (two sizes each), and a rectangular fiber. This research focused on methods that could enhance the development of a uniform speckle pattern at the output end of the fiber, the injection systems are designed to fill the modes of the fiber (as much as practicable) and match the NA of the fiber. The designs for the square and rectangular fibers are based on lenslet array components available from off-the-shelf fabricators. It can be argued that the number of modes injected into the fiber is proportional to the number of lenslets in the input beam. Evaluation at the design phase leaned towards lenslet arrays with small lenslet sizes. However, diffraction limits how small the lenslet arrays can be. For this reason the final designs were configured using a micro lens array (MLA) based imaging integrator approach. An overview and tests results will be presented to evaluate the benefits and limitations of such fiber injection techniques.

Citation Download Citation

Fred M. Dickey and Todd E. Lizotte "Imaging micro lens array beam integrator system design for fiber injection", Proc. SPIE 8130, Laser Beam Shaping XII, 81300N (21 September 2011); https://doi.org/10.1117/12.896738

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available