Ultrahigh bandwidth signal processing

Leif Katsuo Oxenløwe

doi:10.1117/12.2235053

9 August 2016 Ultrahigh bandwidth signal processing

Leif Katsuo Oxenløwe

Proceedings Volume 9894, Nonlinear Optics and its Applications IV; 98940D (2016) https://doi.org/10.1117/12.2235053
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

Optical time lenses have proven to be very versatile for advanced optical signal processing. Based on a controlled interplay between dispersion and phase-modulation by e.g. four-wave mixing, the processing is phase-preserving, and hence useful for all types of data signals including coherent multi-level modulation formats. This has enabled processing of phase-modulated spectrally efficient data signals, such as orthogonal frequency division multiplexed (OFDM) signals. In that case, a spectral telescope system was used, using two time lenses with different focal lengths (chirp rates), yielding a spectral magnification of the OFDM signal. Utilising such telescopic arrangements, it has become possible to perform a number of interesting functionalities, which will be described in the presentation. This includes conversion from OFDM to Nyquist WDM, compression of WDM channels to a single Nyquist channel and WDM regeneration. These operations require a broad bandwidth nonlinear platform, and novel photonic integrated nonlinear platforms like aluminum gallium arsenide nano-waveguides used for 1.28 Tbaud optical signal processing will be described.

Conference Presentation

Citation Download Citation

Leif Katsuo Oxenløwe "Ultrahigh bandwidth signal processing", Proc. SPIE 9894, Nonlinear Optics and its Applications IV, 98940D (9 August 2016); https://doi.org/10.1117/12.2235053

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