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Novel method for characterisation of single-mode fibres and prediction of crossover wavelength and bandpass in nonidentical fibre directional couplers

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3 Author(s)
Tewari, R. ; Indian Institute of Technology, Physics Department, New Delhi, India ; Thyagarajan, K. ; Ghatak, A.K.

We present here a novel and accurate method for the characterisation of single-mode fibres from a measurement of the wavelength dependence of the Petermann spot size. We also show its applicability in the prediction of the crossover wave length and bandpass in wavelength filters using nonidentical fibre directional couplers.

Published in:

Electronics Letters  (Volume:22 ,  Issue: 15 )