Monitoring the dominance of higher-order chromatic dispersion with spectral interferometry using the stationary phase point method

OPTICS COMMUNICATIONS

卷:338

Article

Grosz, Timea¹  Kovacs, Attila P.¹  Mecseki, Katalin^1,2  Gulyas, Lenard¹  Szipocs, Robert³ 

[1] Univ Szeged, Dept Opt & Quantum Elect, H-6720 Szeged, Hungary

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England

[3] Wigner RCP, Inst Solid State Phys & Opt, H-1121 Budapest, Hungary

关键词: Stationary phase point method;    Spectral interferometry;    Chromatic dispersion;    Photonic bandgap fiber;    Prism pair;   

DOI  :  10.1016/j.optcom.2014.10.047

来源: Elsevier

【 摘 要 】

Simulations were performed in order to investigate whether the stationary phase point method can be used to estimate the dominance of higher-order dispersion of the optical element under study. It was shown that different higher-order dispersion terms may result in the appearance of more than one stationary phase point on the interferogram in contrast to common glasses having group-delay dispersion as the highest decisive term in their spectral phase. The results obtained by simulations were demonstrated experimentally with spectral interferometric measurements conducted on a photonic bandgap fiber sample and a prism pair. We concluded that from the shape, movement and number of the stationary phase points it is generally possible to predict which dispersion terms are the most significant, however, in some cases the retrieval of the coefficients is also necessary in order to rule out any ambiguity. The method can offer a dispersion monitoring possibility which is useful in quality testing of specialty fibers and when adjusting stretcher-compressor systems, for example. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free