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Silicon nanomembrane based photonic crystal waveguide array for wavelength-tunable true-time-delay lines Public Deposited

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https://ir.library.oregonstate.edu/concern/articles/z890rv42x

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Abstract
  • We demonstrate a four-channel on-chip true-time-delay module based on a photonic crystal waveguide array. Using the photonic crystal taper to minimize the coupling loss, the delay lines with 1-3 mm long photonic crystal waveguides can operate up to a group index n(g) similar to ~23 without significant loss. The large group velocity dispersion enables continuous and wavelength-tunable time delays. Measurements show a highly linear phase-frequency relation, highest time delay up to 216.7 ps, and large tuning ranges of 58.28 ps, 115.74 ps, and 194.16 Ps for 1-3 mm delay lines. The chip-scale true-time-delay module occupies only 0.18 mm² area and can provide ±44.38 degrees steering for an X-band phased-array-antenna. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4739003]
  • Keywords: Reception, Antenna, Beamformer
  • Keywords: Reception, Antenna, Beamformer
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  • Lin, C., Subbaraman, H., Hosseini, A., Wang, A., Zhu, L., & Chen, R. (2012). Silicon nanomembrane based photonic crystal waveguide array for wavelength-tunable true-time-delay lines. Applied Physics Letters, 101(5) doi: 10.1063/1.4739003
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  • 101
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  • 5
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  • The authors would like to acknowledge the Air Force Office of Scientific Research (AFOSR) for supporting this work under the Multi-disciplinary University Research Initiative (MURI) program (Grant No. FA 9550-08-1-039) and Small Business Technology Transfer (Contract No. FA9550-11-C-0014), monitored by Dr. Gernot Pomrenke.
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