Orientation- and polarisation-dependent cutoff wavelengths in elliptical-core single-mode fibres
- 22 July 1982
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 18 (15) , 640-641
- https://doi.org/10.1049/el:19820436
Abstract
The direct measurement of cutoff wavelengths from the spectral dependence of the near-field intensity distribution has been improved by selectively exciting the first higher-order mode and applying it to elliptical-core single-mode fibres. Depending on the orientation and polarisation of the first higher-order mode, four different cutoff wavelengths have been identified.Keywords
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