FEATURES OF FIBER TAPER MANUFACTURING METHODSFOR MATCHING VARIOUS OPTICAL FIBER MODE FIELDS
V. M. Volosi1,2, I. Y. Vevo1, V. A. Simonov1, H. A. Rizk1,2, N. A. Koliada1,3, D. S. Kharenko1,2
1Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
3Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: fiber tapers, highly nonlinear fibers, polarization maintaining fibers, optical fiber welding
Abstract
The paper presents the study of the transmission loss dependence in the 1.5-1.6 μm range for tapers, depending on their length, melting speed, and constriction dimensions using the Corning SMF-28 optical fiber as an example. The tapers are fabricated on the Fujikura FSM-100P, 100P+, LZM-100 welding machines and Lightel CW-200B coupler workstation. As a result of the experiments, a taper configuration with the minimum losses of -0.5 dB is determined. Using the Lightel CW-200B station, it is possible to manufacture a mode adapter for matching the modes of a standard polarization-maintaining optical fiber Fujikura SM15-PS-U25D and a highly nonlinear fiber with a reduced core HNLF PM. Due to better matching of the mode fields, the connection losses of these optical fibers are reduced from -3 to -1.25 dB.
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