Photonic generation and detection of W-band chirped millimeter-wave pulses for radar

Jim Wein Lin, Chun Liang Lu, H. P. Chuang, F. M. Kuo, Jin Wei Shi, Chen Bin Huang, Ci Ling Pan

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Based on the frequency-to-time mapping approach, we generate frequency-modulated millimeter-wave (MMW) pulses with central frequencies up to the W-band by a shaped optical pulse excitation of an MMW photonic transmitter with an ultrawide band photodiode as its key component. A coherent detection is achieved via a terahertz time-domain spectroscopic setup. Two different kinds of chirped MMW waveforms are generated; one is a linearly chirped sinusoidal pulse and the other is produced by a frequency-stepped modulation. Through appropriate optical spectral design, the frequency-chirped MMW pulses with instantaneous frequencies sweeping from 120 to 60 GHz, and a time-bandwidth product of ∼25 is experimentally demonstrated.

Original languageEnglish
Article number6225421
Pages (from-to)1437-1439
Number of pages3
JournalIEEE Photonics Technology Letters
Volume24
Issue number16
DOIs
StatePublished - 2012

Keywords

  • Millimeter wave (MMW)
  • photonic transmitter (PT)
  • pulse shaping
  • terahertz (THz)

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