Ultrahigh bandwidth signal processing

Leif Katsuo Oxenløwe (Invited author)

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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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, an hence useful for all types of data signals including coherent multi-level modulation founats. This has enabled processing of phase-modulated spectrally efficient data signals, such as orthogonal frequency division multiplexed (OFDM) signa 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 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 regeneratio These operations require a broad bandwidth nonlinear platform, and novel photonic integrated nonlinear platform like aluminum gallium arsenide nano-waveguides used for 1.28 Tbaud optical signal processing will be described.
Original languageEnglish
Title of host publicationProceedings of Spie
Number of pages3
PublisherSPIE - International Society for Optical Engineering
Publication date2016
Article number98940D
ISBN (Print)9781510601390
Publication statusPublished - 2016
EventNonlinear Optics and its Applications IV - Brussels, Belgium
Duration: 4 Apr 20166 Apr 2016


ConferenceNonlinear Optics and its Applications IV
SeriesProceedings of S P I E - International Society for Optical Engineering


  • Nonlinear optical signal processing
  • Time lens
  • Optical communications
  • Nonlinear devices

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