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Title: High-speed all-optical first- and second-order differentiators based on cross-phase modulation in fibers
Authors: Βελανάς, Παντελής
Μπόγρης, Αντώνιος
Συβρίδης, Δημήτριος
Item type: Journal article
Keywords: φίλτρα διέλευσης ζώνης;οπτικές τεχνικές υψηλής ταχύτητας;μη γραμμική οπτική;οπτική συσχέτιση;οπτικές ίνες;οπτική διαμόρφωση;band-pass filters;high-speed optical techniques;Nonlinear optics;Optical correlators;Optical fibres;optical modulation
Subjects: Τεχνολογία
Computer science
Issue Date: 17-May-2015
Publisher: IEEE
Abstract: An ultrafast all-optical differentiator generating the first- and the second-order temporal derivative of the intensity of optical signals is presented in this paper. Differentiation is obtained via an optical fiber that plays the role of an optical phase modulator, an optical bandpass filter and a photodetector. The operation of the proposed device is theoretically studied in order to highlight significant parameters that affect the performance of the differentiator, namely the filter transfer function, the power of the propagating waves and the fiber characteristics (length and nonlinear coefficient). The comparison between the numerically calculated derivatives and the theoretically expected ones is performed by estimating the correlation coefficient between them. According to the numerical analysis, high correlation coefficients can be achieved in certain operating regimes. The same device can be utilized in order to produce ultrawideband (UWB) impulse signals. Electrical monocycle or doublet pulses can be obtained at the output of the photodetector (PD) using the proper tunable optical filter. Experimental verification of the theoretically predicted and numerically calculated results is finally presented for high bit-rate signals.
Language: English
Citation: Velanas, P., Bogris, A., Argyris, A. and Syvridis, D. (2008) High-Speed All-Optical First- and Second-Order Differentiators Based on Cross-Phase Modulation in Fibers. IEEE Journal of Lightwave Technology. [Online] 26 (18), pp.3269‐3276. Available from: [Accessed 17/05/2015]
Journal: IEEE Journal of Lightwave Technology
Type of Journal: With a review process (peer review)
Sponsor: IEEE Aerospace and Electronic Systems Society
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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