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Updated: May 17, 2026

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Polarization-maintaining higher-order mode fiber module with anomalous dispersion at 1 μm
S H M Larsen1, M E V Pedersen, L Grüner-Nielsen
1DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, 2800 Kgs, Lyngby, Denmark. shml@fotonik.dtu.dk
Abstract:
This Letter demonstrates a polarization-maintaining higher-order mode fiber module that has anomalous dispersion at 1 μm. The group velocity dispersion of the module is measured, showing a split of the two polarization axes. The excellent polarization-maintaining properties of the relevant fiber modes for the higher-order mode fiber are likewise demonstrated employing a new simple method for the measurement of the beat length of higher-order modes at a single wavelength. The higher-order fiber module is intended for group velocity dispersion compensation.
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