Mid-infrared holey and slotted photonic crystal waveguides in silicon-on-sapphire for chemical warfare simulant detection

Zou, Yi; Chakravarty, Swapnajit; Wray, Parker; Chen, Ray T.

doi:10.1016/j.snb.2015.07.061

Cited by 50 publications

(30 citation statements)

References 18 publications

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“…However, based on our knowledge, very few works about the PCW enhanced gas sensor in the mid-infrared range has been reported so far [44]. In 2015, Zou et al [45] provided the first experimental demonstration of transmission characteristics of holey and slotted PCWs in silicon-on-sapphire at the wavelength of 3.43 μm with a fixed-wavelength inter-band cascade laser (ICL). They used an 800 μm long holey PCW to detect gas-phase Triethyl phosphate (TEP) with the concentration of 10 ppm (parts per million).…”

Section: Photonic Crystal Waveguide (Pcw) For Gas Sensing Enhancementmentioning

confidence: 99%

“…The transmitted light through an 800 μm long holey PCW with a = 845 nm is measured in the presence and absence of TEP. They investigated changes in Optimization of r s /r according to bandwidth, stop gap electrical field overlap, peak enhancement factor [45].…”

Section: Photonic Crystal Waveguide (Pcw) For Gas Sensing Enhancementmentioning

confidence: 99%

“…In 2015 Zou et al [45] designed a holey, slotted, and a regular PCW for detection the chemical warfare simulant in the mid-infrared range. A section of this research has been assigned to the investigation of the relationship between the value of electrical field overlap with the analyte and the sensitivity of the refractive change based sensors.…”

Section: Mid-infrared "Refractive Index" Sensingmentioning

confidence: 99%

“…(c). Transmitted light intensity through a silicon strip waveguide in SoS in the presence and absence of 28 ppm TEP[45].…”

mentioning

confidence: 99%

“…Simulated transmission with air-clad and C 2 C l4 -clad conditions for (a) conventional PCW, (b) holey PCW, and (c) slotted PCW[45].…”

mentioning

confidence: 99%

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The Mid-Infrared Photonic Crystals for Gas Sensing Applications

Hemati¹,

Weng²

2019

Photonic Crystals - A Glimpse of the Current Research Trends

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Mid-infrared spectrum is known as the "molecular fingerprint" region, where most of the trace gases have their identical absorption patterns. Photonic crystals allow the control of light-matter interactions within micro/nanoscales, offering unique advantages for gas analyzing applications. Therefore, investigating mid-infrared photonic crystal based gas sensing methods is of significant importance for the gas sensing systems with high sensitivity and portable footprint features. In recent various photonic crystal gas sensing techniques have been developing rapidly in the mid-infrared region. They operate either by detecting the optical spectrum behavior or by measuring the material properties, such as the gas absorption patterns, the refractive index, as well as the electrical conductivities. Here, we will brief the progress, and review the above-listed photonic crystal approaches in the mid-infrared range. Their uniqueness and weakness will both be presented. Although the technical level for them has not been ready for commercialization yet, their small size, weight, power consumption and cost (SWaP-C) features offer great values and indicate their enormous application potentials in future, especially under the stimulation of the newly emerging technology "Internet of Things" which heavily relies on modern SWaP-C sensor devices.

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Section: Photonic Crystal Waveguide (Pcw) For Gas Sensing Enhancementmentioning

confidence: 99%

Section: Photonic Crystal Waveguide (Pcw) For Gas Sensing Enhancementmentioning

confidence: 99%

Section: Mid-infrared "Refractive Index" Sensingmentioning

confidence: 99%

“…(c). Transmitted light intensity through a silicon strip waveguide in SoS in the presence and absence of 28 ppm TEP[45].…”

mentioning

confidence: 99%

“…Simulated transmission with air-clad and C 2 C l4 -clad conditions for (a) conventional PCW, (b) holey PCW, and (c) slotted PCW[45].…”

mentioning

confidence: 99%

See 3 more Smart Citations

The Mid-Infrared Photonic Crystals for Gas Sensing Applications

Hemati¹,

Weng²

2019

Photonic Crystals - A Glimpse of the Current Research Trends

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Recent Progress in Silicon‐Based Photonic Integrated Circuits and Emerging Applications

Xiao,

Liu,

et al. 2023

Advanced Optical Materials

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In recent years, with the further ministration of the semiconductor device in integrated circuits, power consumption and data transmission bandwidth have become insurmountable obstacles. As an integrated technology, photonic integrated circuits (PICs) have a promising potential in the post‐Moore era with more advantages in data processing, communication, and diversified sensing applications for their ultra‐high process speed and low power consumption. Silicon photonics is believed to be an encouraging solution to realize PICs because of the mature CMOS process. The past decades have witnessed a huge growth in silicon PICs. However, there is still a demand for the development of silicon PICs to enable powerful chip‐scale systems and new functionalities. In this paper, a review of the photonic components, functional blocks, and emerging applications for PICs is offered. The common photonic components are classified into several sections, including on‐chip light sources, fiber‐to‐chip couplers, photonic resonators, waveguide‐based sensors, on‐chip photodetectors, and modulators. The functional blocks of the PICs mentioned in this review are photonic memories and photonic neural networks. Finally, the paper concludes with emerging applications for further study.

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