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Proceedings Paper

Parallel optical interconnection using self-adjustung microlenses on injection-molded ferrules made by LIGA technique
Author(s): Jens Schulze; Wolfgang Ehrfeld; Jens Hossfeld; Michael Klaus; Maria Kufner; Stefan Kufner; Holger Mueller; Antoni Picard
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Paper Abstract

Prototypes of compact lensed fiber connectors have been fabricated by LIGA technique that provide multimode connections for parallel optical interfaces. Contactless embossed microlens arrays were introduced as collimating and focusing elements in order to achieve a simplified connector assembly. As an alternative ball lenses were inserted in a second type of expanded-beam connector ferrule. Fibers, microlens arrays or respectively single microlenses, and two metal guiding pins are possibly adjusted in high precision alignment structures. The ferrules are injection modeled and the modular mold insert has been fabricated by means of microtechnology: LIGA technique and electro-discharge machining. Insertion loss values of 4.5 dB have been measured for assembled mated couples of ferrules with contactless embossed microlens arrays and 2.3 dB for ferrules with ball lenses, both at 1310 nm including reflection losses of typical 1 dB. Even though commonly used butt-coupling connector show lower insertion loss values, the introduced compact expanded-beam connectors could offer an attractive solution for applications in harsh or dirty environments of for micro-optical components e.g. compact 90 degrees optical interfaces for backplane connectors or switches by deflecting the expanded optical beam by a mirrors or prisms.

Paper Details

Date Published: 27 August 1999
PDF: 10 pages
Proc. SPIE 3737, Design and Engineering of Optical Systems II, (27 August 1999); doi: 10.1117/12.360052
Show Author Affiliations
Jens Schulze, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Wolfgang Ehrfeld, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Jens Hossfeld, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Michael Klaus, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Maria Kufner, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Stefan Kufner, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Holger Mueller, Institut fuer Mikrotechnik Mainz GmbH (Germany)
Antoni Picard, Institut fuer Mikrotechnik Mainz GmbH (Germany)


Published in SPIE Proceedings Vol. 3737:
Design and Engineering of Optical Systems II
Fritz Merkle, Editor(s)

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