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Proceedings Paper

Quadrant detector based on InGaAsP heterostructures
Author(s): Valerian Dorogan; Vladimir I. Brynzari; Tatiana Vieru; V. Kosyak
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Paper Abstract

A new device called selective quadrant-detector, realized on the basis of InGaAsP heterostructures, is presented in the paper. It consists of a circular photodiode-quadrant with protective peripheric ring, having selective sensibility optimized for (lambda) equals 1.06 micrometers , in the center of which a photodetector integrated in the same crystal is formed. The photodetector has own capacity C equals 1 - 5 pF and can be used for receiving the high frequency (f > 1 GHz) optic signals and the small duration (t <EQ 1 ns) unitary signals. The presence of central photodetector decreases the coordinate characteristic abruptness (K equals 8(DOT)103 V(DOT)W-1(DOT)mm-1(and photocurrent intensity with 8 - 10%. Absolute spectral sensibility is S(lambda equals1.06) equals 0.57 A/W and photosensibility spectrum semiwidth is (Delta) (lambda) <EQ 100 nm.

Paper Details

Date Published: 2 July 1998
PDF: 7 pages
Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); doi: 10.1117/12.312709
Show Author Affiliations
Valerian Dorogan, Technical Univ. of Moldova (Moldova)
Vladimir I. Brynzari, Technical Univ. of Moldova (Moldova)
Tatiana Vieru, Technical Univ. of Moldova (Moldova)
V. Kosyak, Technical Univ. of Moldova (Moldova)

Published in SPIE Proceedings Vol. 3405:
ROMOPTO '97: Fifth Conference on Optics
Valentin I. Vlad; Dan C. Dumitras, Editor(s)

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