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Group IV Photonic Slot Structures for Highly Efficient Gas Sensing in mid-IR

Authors:
Vittorio Passaro
Benedetto Troia
Francesco De Leonardis

Keywords: Silicon-on-Insulator; Photonic Sensors; Gas Sensing; Slot Waveguides; Group IV materials

Abstract:
In this paper, novel high-performance group IV photonic structures for very efficient gas sensing are presented. Various combinations of group IV materials and alloys based on silicon (Si), germanium (Ge), tin (Sn) and carbon (C), have been studied in CMOS-compatible technology for design of optical slot waveguides for homogeneous optical sensors in mid-IR (3.39 μm). An analysis of fabrication tolerances is presented and a comparison among different photonic sensing structures is also given. Theoretical investigation demonstrates very efficient optical field concentrations in the sensing area, as well as ultra high sensitivity of gas sensing for environmental applications.

Pages: 103 to 108

Copyright: Copyright (c) IARIA, 2011

Publication date: August 21, 2011

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-145-8

Location: Nice/Saint Laurent du Var, France

Dates: from August 21, 2011 to August 27, 2011