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Return loss measurements of WDM filters with tunable coherent optical frequency-domain reflectometry

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5 Author(s)
von der Weid, J.P. ; Univ. Catolica de Rio de Janeiro, Brazil ; Passy, R. ; Forno, A.O. ; Huttner, B.
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Reflectivity measurements of wavelength-division multiplexed (WDM) filters were performed with polarization independent coherent optical frequency domain reflectometry (C-OFDR). The spectral resolution of 0.012 mn allowed to characterize side lobe spacing and reflectivity with 90-dB dynamic range. The off-channel reflectivity was also measured for estimating the interchannel crosstalk in WDM systems and the experimental results were fitted to a theoretical equation, extracting the physical parameters of the filter.

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Photonics Technology Letters, IEEE  (Volume:9 ,  Issue: 11 )