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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 11,
  • Issue 3,
  • pp. 030605-
  • (2013)

Photonic angle-of-arrival and time-dif ference-of-arrival measurement based on dual drive 1 × 2 MZM

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Abstract

We propose and experimentally demonstrate a photonic approach to estimate the time-difference-of-arrival (TDOA) and the angle-of-arrival (AOA) of a microwave signal. TDOA and AOA are estimated from the carrier power difference of the two outputs of the Mach-Zehnder modulator (MZM) using only one dual-drive 1 × 2 MZM. Experimentally, the TDOA of a microwave signal at 3 GHz from 27.78 to 166.67 ps is measured with maximum measurement errors of ±2.24 ps; correspondingly, the AOA from 60° to 85.2° is measured with maximum measurement errors of ±0.4°.

© 2013 Chinese Optics Letters

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