NDLI: Design of a monolithic CMOS image sensor integrated focal plane wire-grid polarizer filter mosaic

Content Provider	IEEE Xplore Digital Library
Author	Xiaotie Wu Milin Zhang Engheta, N. Van der Spiegel, J.
Copyright Year	2012
Description	Author affiliation: Department of Electrical and Systems Engineering (ESE), University of Pennsylvania, Philadelphia, PA 19104 (Xiaotie Wu; Milin Zhang; Engheta, N.; Van der Spiegel, J.)
Abstract	Polarization is one of the important characteristics of visible light that can not be detected by human visual system or traditional image sensors. In this paper, we report on an image sensor integrated focal plane 2 × 2 wire-grid polarizer filter mosaic targeted at visible spectrum fabricated in 65nm standard CMOS processing line, which enables the reconstruction of the polarization response characteristic for each pixel. Finite-Difference Time-Domain method has been used for the first time to optimize the extinction ratio in visible spectrum of the multilayer focal plane wire-grid polarizer. Experimental results show that an extinction ratio around 10 is achieved with a standard error of around 0.25% between the experimental results and the fitting sinusoidal polarization response curve. A phase error at the level of less than 2% to the measurement phase resolution is achieved. These results are the best reported for a monolithic wire-grid polarization image sensor design for visible spectrum.
Starting Page	1
Ending Page	4
File Size	336080
Page Count	4
File Format	PDF
ISBN	9781467315555
ISSN	08865930
e-ISBN	9781467315562
e-ISBN	9781467315548
DOI	10.1109/CICC.2012.6330605
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Extinction ratio Standards CMOS integrated circuits CMOS image sensors Arrays Gratings Metals
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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