Galili, Michael

Guan, Pengyu

Hu, Hao

Lillieholm, Mads

Morioka, Toshio

Oxenløwe, Leif Katsuo

Røge, Kasper Meldgaard

We review recent progress in the use of time lens based optical Fourier transformation for advanced all-optical signal processing. A novel time lens based complete optical Fourier transformation (OFT) technique is introduced. This complete OFT is based on two quadratic phase-modulation stages using four-wave mixing (FWM), separated by a dispersive medium, which enables time-to-frequency and frequency-to-time conversions simultaneously, thus performing an exchange between the temporal and spectral profiles of the input signal. Using the proposed complete OFT, several advanced all-optical signal processing schemes for spectrally-efficient systems and networks have been achieved, including all-optical generation, detection and format conversion of spectrally-efficient signals. The spectrally-efficient signals in this paper mainly refer to efficiently multiplexed signals with a high symbol rate per Hz, such as orthogonal frequency division multiplexing (OFDM), Nyquist wavelength-division multiplexing (Nyquist-WDM) and Nyquist optical time division multiplexing (Nyquist-OTDM) signals

Online Research Database In Technology

Time Lens based Optical Fourier Transformation for All-Optical Signal Processing of Spectrally-Efficient Data

http://orbit.dtu.dk/ws/files/128045322/07579624.pdf

Time Lens based Optical Fourier Transformation for All-Optical Signal Processing of Spectrally-Efficient Data

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Online Research Database In Technology