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Time Lens based Optical Fourier Transformation for All-Optical Signal Processing of Spectrally-Efficient Data
Abstract
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- article
- Atomic and Molecular Physics, and Optics
- All-optical OFDM
- Nyquist-WDM
- optical Fourier transformation
- optical signal processing
- OTDM
- Four wave mixing
- Fourier transforms
- Frequency division multiplexing
- Lenses
- Metadata
- Multiplexing
- Optical fiber communication
- Optical signal processing
- Phase modulation
- Signal processing
- Time division multiplexing
- Wavelength division multiplexing
- All-optical signal processing
- Fourier transformations
- Multiplexed signals
- Nyquist
- Nyquist wavelength division multiplexing (nyquist WDM)
- Optical time division multiplexing
- Orthogonal frequency division multiplexing