Laser-based micro alignment for fabrication of highly precise 2D fiber collimator arrays

Markus Stark; Gerd Esser; Andre Lamott; Manfred Geiger

doi:10.1117/12.529072

15 July 2004 Laser-based microalignment for fabrication of highly precise 2D fiber collimator arrays

Markus Stark, Gerd Esser, Andre Lamott, Manfred Geiger

Proceedings Volume 5339, Photon Processing in Microelectronics and Photonics III; (2004) https://doi.org/10.1117/12.529072
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

In optical communication there are systems requiring a parallel transmission of several high bit rate data channels based on singlemode fibers. Especially for a free space transmission within such a system a precise collimation of the parallel channels is necessary to guarantee a low loss system. For this purpose compact two dimensional fiber collimator arrays can be used. A main quality characteristic for this arrays is the pointing accuracy, the angular deviation of the collimated beams to a theoretical optical axis. The angular deviation is caused by a lateral offset of the fiber axes to the axes of the corresponding micro lens. To minimize this offset we developed and analyzed an actor geometry for a fiber array which allows a laser based micro alignment of the fibers to the micro lenses. An alignment accuracy within submicrons can be realized which guarantees a pointing accuracy below 0.01 degrees. In this paper we demonstrate some important results of the FEM based analyzes to show the influence of different laser parameters for optimizing the alignment procedure and to minimize alignment time. Experimental results confirm the actor behavior calculated in the FE analyzes and demonstrate the qualification of laser based micro alignment of fibers for the assembly of highly precise two dimensional fiber collimator arrays.

Citation Download Citation

Markus Stark, Gerd Esser, Andre Lamott, and Manfred Geiger "Laser-based microalignment for fabrication of highly precise 2D fiber collimator arrays", Proc. SPIE 5339, Photon Processing in Microelectronics and Photonics III, (15 July 2004); https://doi.org/10.1117/12.529072

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