Electric field characterization for phase-Modulated signals using measured spectrogram

Electric field characterization for phase-Modulated signals using measured spectrogram

The complex-value electric field of a periodic phase-modulated optical signal is retrieved from the spectrogram/sonogram that is measured by a fast photodiode followed a tunable narrow-band optical filter. With an initial guess from the craters and ridges of the spectrogram, the numerical algorithm...

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Veröffentlicht in:IEEE photonics technology letters 2005-10, Vol.17 (10), p.2143-2145
Hauptverfasser: Ho, Keang-Po, Wang, Hsi-Cheng, Chen, Hau-Kai, Wu, Cheng-Chen
Format: Artikel
Sprache:eng
Schlagworte:
Differential phase-shift keying (DPSK)
Differential quadrature phase shift keying
Electric fields
Electric variables measurement
Fiber nonlinear optics
Nonlinear optics
Numerical analysis
Optical filters
Optical receivers
Optical sensors
Phase measurement
phase retrieval
Photodiodes
Photonics
Pulse measurements
Ridges
sonogram
Sonograms
Spectrogram
Spectrograms
time-resolved optical filtering (TROF)
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Beschreibung
Zusammenfassung:The complex-value electric field of a periodic phase-modulated optical signal is retrieved from the spectrogram/sonogram that is measured by a fast photodiode followed a tunable narrow-band optical filter. With an initial guess from the craters and ridges of the spectrogram, the numerical algorithm converges very fast to a mean-square error less than 1%.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.854420