4.6 Article

Image sensor pixel with on-chip high extinction ratio polarizer based on 65-nm standard CMOS technology

Journal

OPTICS EXPRESS
Volume 21, Issue 9, Pages 11132-11140

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OE.21.011132

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Funding

  1. Japan Science and Technology Agency, Core Research for Evolutional Science and Technology (JST-CREST) [24310101, 24106729]
  2. VLSI Design and Education Center (VDEC), The University of Tokyo
  3. Cadence Corporation
  4. Mentor Graphics Corporation
  5. Japanese Ministry of Economy, Trade and Industry
  6. Grants-in-Aid for Scientific Research [24106729, 24651163] Funding Source: KAKEN

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In this study, we demonstrate a polarization sensitive pixel for a complementary metal-oxide-semiconductor (CMOS) image sensor based on 65-nm standard CMOS technology. Using such a deep-submicron CMOS technology, it is possible to design fine metal patterns smaller than the wavelengths of visible light by using a metal wire layer. We designed and fabricated a metal wire grid polarizer on a 20 x 20 mu m(2) pixel for image sensor. An extinction ratio of 19.7 dB was observed at a wavelength 750 nm. (C) 2013 Optical Society of America

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