TY - JOUR A1 - Hagemann, Hans-Jürgen A1 - Geittner, P. A1 - Lydtin, H. A1 - Warnier, J. T1 - Hybrid technology for large SM-fiber preforms. Geittner, P.; Hagemann, H. J.; Lydtin, H.; Warnier, J. JF - Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 6 (1988), H. 10 Y1 - 1988 SN - 0733-8724 SP - 1451 EP - 1454 ER -