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Comparison between nonlinear and linear spectrographic techniques for the complete characterization of high bit-rate pulses used in optical communications

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4 Author(s)
Thomsen, B.C. ; Opt. Networks Group, Univ. Coll. London, UK ; Roelens, M.A.F. ; Watts, R.T. ; Richardson, D.J.

Two spectrographic techniques for the complete characterization (amplitude and phase) of optical pulses with durations commensurate with high bit-rate communications systems (2-30 ps) are experimentally compared. We show that a highly sensitive linear sampling technique utilizing an electroabsorption modulator gives accurate results when compared to a nonlinear sampling technique based on second-harmonic generation over a range of pulse durations from 2-33 ps.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 9 )