Bioinspired Focal-Plane Polarization Image Sensor Design: From Application to Implementation

Author

Milin Zhang ; Xiaotie Wu ; Nan Cui ; Engheta, Nader ; Van der Spiegel, Jan

Author_Institution

Dept. of Electr. & Syst. Eng., Univ. of Pennsylvania, Philadelphia, PA, USA

Volume

102

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

1435

Lastpage

1449

Abstract

In this paper, a bioinspired monolithic complementary metal-oxide-semiconductor (CMOS) polarization image sensor is described as a solution to real-time polarization image capture. Metallic wire-grid gratings are integrated onto standard CMOS image sensor arrays with different orientations. A numerical analysis is performed to guide the design of the wire-grid arrays. Experimental results from different CMOS processing units are compared. A current-mode polarization processing unit is designed, fabricated, and tested in order to perform the extraction of the polarization characteristics from the captured intensities. This paper illustrates how polarization image processing can be used to monitor live cells. Several polarization processing methods with different computational complexity and data requirements have been applied and compared.

Keywords

CMOS image sensors; computational complexity; diffraction gratings; focal planes; image processing; integrated circuit testing; light polarisation; numerical analysis; sensor arrays; bioinspired focal-plane polarization image sensor design; bioinspired monolithic CMOS polarization image sensor array; complementary metal-oxide-semiconductor; computational complexity; current-mode processing unit; metallic wire-grid grating array; numerical analysis; polarization image processing method; real-time polarization image capture; Biosensors; CMOS integrated circuits; Gratings; Image processing; Image sensors; Optical filters; Polarization; Sensitivity; Bioinspired CMOS image sensor; metallic gratings; polarimetry; polarization;

fLanguage

English

Journal_Title

Proceedings of the IEEE

Publisher

ieee

ISSN

0018-9219

Type

jour

DOI

10.1109/JPROC.2014.2347351

Filename

6895247