Complete Field Characterization of Ultrashort Pulses in Fiber Photonics

We report a simple fiber-implemented technique for complete reconstruction of intensity profile and phase of ultrashort laser pulses based on processing only pulse spectrum and two self-phase modulated spectra measured after a short piece of optical fiber. Its applicability is shown on an example of...

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Veröffentlicht in:IEEE journal of selected topics in quantum electronics 2018-05, Vol.24 (3), p.1-7
Hauptverfasser: Anashkina, Elena A., Andrianov, Alexey V., Koptev, Maxim Yu, Kim, Arkady V.
Format: Artikel
Sprache:eng
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Zusammenfassung:We report a simple fiber-implemented technique for complete reconstruction of intensity profile and phase of ultrashort laser pulses based on processing only pulse spectrum and two self-phase modulated spectra measured after a short piece of optical fiber. Its applicability is shown on an example of a fiber optical system in the telecommunication range. A retrieval algorithm in a dispersionless approximation and with considering dispersion effects is developed. The obtained results are confirmed by independent measurements using the second-harmonic generation frequency-resolved optical gating technique and by reconstructing purposely introduced signal features. We also provide estimates demonstrating great opportunities for implementing this technique in all-waveguide optical systems ranging from optical communications to nanophotonics with femtojoule pulses as well as to mid-IR photonics, where specialty fibers with huge optical nonlinearities can be used.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2017.2782624