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Bandwidth of directonal-coupler wavelength filters made of dissimilar optical fibres

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2 Author(s)
Leminger, O. ; Deutsche Bundespost, Research Institute, Darmstadt, West Germany ; Zengerle, R.

Wavelength-selective directional couplers made of dissimilar single-mode fibres have a true bandpass-filter characteristic. A simple formula for estimating their bandwidth is presented. Comparison with experimental results shows good agreement.

Published in:

Electronics Letters  (Volume:23 ,  Issue: 5 )