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Proceedings Paper

Self-assembled PN semiconductor detectors on optical fibers
Author(s): H. Ruan; Y. Kang; J. Lalli; A. Hill; N. D. Sankir; F. J. Arregui; R. O. Claus
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Paper Abstract

Recent work in the fabrication of self assembled quantum dot (QD) detectors on active structural fibers and for the implementation of optical fiber sensors is reported in this paper. The ability to develop the QD based devices and materials via the electrostatic self-assembly (ESA) process has been demonstrated by Hand and Kang in prior work. The QD precursor nanocluster materials involved in ESA have been designed and synthesized to proper size, stabilized in an aqueous-based solution, and functionalized to allow self-assembly. Optical fiber sensor instrumentation has been developed to monitor the reflected optical power with the buildup of the QD layers on the fiber endface during the ESA process. The results are confirmed by observing the effects of low-finesse QD Fabry-Perot interferometric cavities formed via such processes on the ends of optical fibers. The photocurrent-voltage characteristics show a diode-like behavior with linear photocurrent in the reverse bias and non-linearity in the forward bias. It is suggested that fast response times can be achieved due to the high carrier mobilities that arise in part due to structure of the materials formed via the solution-based ESA process. This paper reviews this prior work and shows examples of deposition of devices on both fiber endfaces and cladding surfaces.

Paper Details

Date Published: 10 April 2007
PDF: 5 pages
Proc. SPIE 6529, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007, 652920 (10 April 2007); doi: 10.1117/12.715660
Show Author Affiliations
H. Ruan, NanoSonic, Inc. (United States)
Y. Kang, NanoSonic, Inc. (United States)
J. Lalli, NanoSonic, Inc. (United States)
A. Hill, NanoSonic, Inc. (United States)
N. D. Sankir, TOBB Univ. of Economics and Technology (Turkey)
F. J. Arregui, Public Univ. of Navarra (Spain)
R. O. Claus, NanoSonic, Inc. (United States)

Published in SPIE Proceedings Vol. 6529:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2007
Masayoshi Tomizuka; Chung-Bang Yun; Victor Giurgiutiu, Editor(s)

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