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Non-linear effects of intensity-modulated and directly detected optical links on receiving a linear frequency-modulated waveform

Shabani, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1049/iet-opt.2010.0082
  3. Abstract:
  4. Limitations imposed by the non-linearity of optical links, in the front end of a receiving array antenna, on the performance of a pulse compression radar are studied. Particularly linear frequency-modulated waveforms backscattered from a pair of targets are inspected. Inter-modulation and gain compression by noise are presented as two remarkable phenomena. For an interconnection of two dual-drive Mach-Zehnder modulators, the sensitivity of the compressed echo at the output of a matched filter receiver to certain tunable parameters is studied numerically. Finally, certain values of DC bias and phase shift between the modulators' electrodes are recommended
  5. Keywords:
  6. Back-scattered ; DC bias ; Dual drives ; Front end ; Gain compression ; Inter modulations ; Mach Zehnder modulator ; Matched filter receivers ; Non-Linearity ; Nonlinear effect ; Pulse compression radars ; Receiving arrays ; Tunable parameter ; Wave forms ; Frequency modulation ; Matched filters ; Optical links ; Radar ; Light modulators
  7. Source: IET Optoelectronics ; Volume 5, Issue 6 , 2011 , Pages 255-260 ; 17518768 (ISSN)
  8. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6042369