Subwavelength line imaging using plasmonic waveguides

N. Podoliak, P. Horak, Jord Prangsma, Pepijn Willemszoon Harry Pinkse

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)


We investigate the subwavelength imaging capacity of a 2-D fanned-out plasmonic waveguide array, formed by air channels surrounded by gold metal layers for operation at near-infrared wavelengths, via finite-element simulations. High resolution is achieved on one side of the device by tapering down the channel width, while simultaneously maintaining propagation losses of a few decibels. On the other, low-resolution, side output couplers are designed to optimize coupling to free space and to minimize channel cross talk via surface plasmons. Point sources separated by λ/15 can still be clearly distinguished. Moreover, up to 90% of the power of a point dipole is coupled to the device. Applications are high-resolution linear detector arrays and, by operating the device in reverse, high-resolution optical writing.
Original languageEnglish
Article number7200107
Pages (from-to)7200107-
Number of pages7
JournalIEEE journal of quantum electronics
Issue number2
Publication statusPublished - 23 Dec 2015


  • METIS-313474
  • IR-98347


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