Submicron alignment of a two-dimensional array of multiple single-mode fibers

M. Luetzelschwab, D. Weiland, M. P Y Desmulliez

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


This letter presents a patented method to align single- or multimode optical fibers on top of an optoelectronic emitter array. Electrostatic forces are used to align copper-coated optical fibers within adhesive filled holes. The manufacturing and alignment performance of a microholder with a hole diameter of 1000 µm are fully characterized. The outer diameter of the optical single-mode fiber is 125 µm including the cladding. A submicron alignment accuracy can be inferred from the measurements taken. The sensitivity of the alignment procedure has been found to be between 0.25 and 1 µm per volt depending on the clamping distance. The combination of the electrostatic movement and the optical monitoring of the fiber position in a closed-loop feedback system yield a highly accurate and sensitive active alignment system. © 2005 IEEE.

Original languageEnglish
Pages (from-to)2634-2636
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
Publication statusPublished - Dec 2005


  • Microassembly
  • Microelectromechanical devices
  • Optical coupling
  • Optical fiber couplers


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