Low-loss chalcogenide waveguides for chemical sensing in the mid-infrared

Pan Ma; Duk Yong Choi; Yi Yu; Xin Gai; Zhiyong Yang; Sukanta Debbarma; Steve Madden; Barry Luther-Davies

doi:10.1364/OE.21.029927

Low-loss chalcogenide waveguides for chemical sensing in the mid-infrared

Pan Ma^*, Duk Yong Choi, Yi Yu, Xin Gai, Zhiyong Yang, Sukanta Debbarma, Steve Madden, Barry Luther-Davies

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

175 Citations (Scopus)

Abstract

We report the characteristics of low-loss chalcogenide waveguides for sensing in the mid-infrared (MIR). The waveguides consisted of a Ge _11.5As₂₄Se_64.5 rib waveguide core with a 10nm fluoropolymer coating on a Ge_11.5As₂₄S_64.5 bottom cladding and were fabricated by thermal evaporation, photolithography and ICP plasma etching. Over most of the functional group band from 1500 to 4000cm^-1 the losses were < 1dB/cm with a minimum of 0.3dB/cm at 2000cm^-1. The basic capabilities of these waveguides for spectroscopy were demonstrated by measuring the absorption spectrum of soluble Prussian blue in Dimethyl Sulphoxide.

Original language	English
Pages (from-to)	29927-29937
Number of pages	11
Journal	Optics Express
Volume	21
Issue number	24
DOIs	https://doi.org/10.1364/OE.21.029927
Publication status	Published - 2 Dec 2013

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abstract = "We report the characteristics of low-loss chalcogenide waveguides for sensing in the mid-infrared (MIR). The waveguides consisted of a Ge 11.5As24Se64.5 rib waveguide core with a 10nm fluoropolymer coating on a Ge11.5As24S64.5 bottom cladding and were fabricated by thermal evaporation, photolithography and ICP plasma etching. Over most of the functional group band from 1500 to 4000cm-1 the losses were < 1dB/cm with a minimum of 0.3dB/cm at 2000cm-1. The basic capabilities of these waveguides for spectroscopy were demonstrated by measuring the absorption spectrum of soluble Prussian blue in Dimethyl Sulphoxide.",

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AU - Ma, Pan

AU - Choi, Duk Yong

AU - Yu, Yi

AU - Gai, Xin

AU - Yang, Zhiyong

AU - Debbarma, Sukanta

AU - Madden, Steve

AU - Luther-Davies, Barry

PY - 2013/12/2

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AB - We report the characteristics of low-loss chalcogenide waveguides for sensing in the mid-infrared (MIR). The waveguides consisted of a Ge 11.5As24Se64.5 rib waveguide core with a 10nm fluoropolymer coating on a Ge11.5As24S64.5 bottom cladding and were fabricated by thermal evaporation, photolithography and ICP plasma etching. Over most of the functional group band from 1500 to 4000cm-1 the losses were < 1dB/cm with a minimum of 0.3dB/cm at 2000cm-1. The basic capabilities of these waveguides for spectroscopy were demonstrated by measuring the absorption spectrum of soluble Prussian blue in Dimethyl Sulphoxide.

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Low-loss chalcogenide waveguides for chemical sensing in the mid-infrared

Abstract

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