Methane absorption spectroscopy on a silicon photonic chip

Tombez, Lionel; Zhang, Eric; Orcutt, Jason S.; Kamlapurkar, Swetha; Green, W. M. J.

doi:10.1364/optica.4.001322

Cited by 163 publications

(114 citation statements)

References 20 publications

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“…This evanescent field approach has also been used in the development of photonically integrated molecular sensors in Si using ring resonators, 271 photonic crystals 272 or long, serpentine waveguides to increase absorption. 273 The transit-time broadening and light shifts in smalldimension photonic systems can be reduced by expanding the transverse dimensions of the light beam. The transit time broadening of an atom or molecule with a transverse thermal velocity of 300 m/s is shown as a function of the beam size in Fig.…”

mentioning

confidence: 99%

Chip-scale atomic devices

Kitching

2018

Applied Physics Reviews

388

175

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mentioning

confidence: 99%

Chip-scale atomic devices

Kitching

2018

Applied Physics Reviews

388

175

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“…We have reviewed the technology in this manuscript, and it can be concluded that photonic integration is ready for out-of-lab demonstrators. An example for such a demonstrator is the methane sensor developed by IBM research [17]. Other research focussed on the development of an integrated NH 3 Figure 18.…”

Section: Resultsmentioning

confidence: 99%

“…The marker numbers correspond to the item number in the references list. Reference [17] is shown in blue, as it corresponds to a PIC based gas sensor. Reference [18], shown in red, also represents a PIC-based gas sensor, but has not been experimentally verified.…”

Section: Resultsmentioning

confidence: 99%

“…There has been substantial work to integrate gas interaction cells on-chip [77][78][79][80][81]. A methane (CH 4 ) detection PIC has been demonstrated by Tombez et al, where the interaction cell is provided by a Si waveguide on a buried SiO 2 layer [17]. Figure 14 shows the PIC used in this experiment.…”

Section: Near-infraredmentioning

confidence: 99%

“…This paper reviews how the maturity of the current PIC technology can be used to create powerful optical gas sensors. This is an active field of research, and first publications show the potential of this approach [17][18][19]. The research interest is also reflected in the number of scientific publications.…”

Section: Introductionmentioning

confidence: 99%

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In this article, the potential of photonic integrated circuits (PICs) for modern gas sensing applications is discussed. Optical detection systems can be found at the high-end of the currently available gas detectors, and PIC-based optical spectroscopic devices promise a significant reduction in size and cost. The performance of such devices is reviewed here. This discussion is not limited to one semiconductor platform, but includes several available platforms operating from the visible wavelength range up to the long wavelength infrared. The different platforms are evaluated regarding their capabilities in creating a fully integrated spectroscopic setup, including light source, interaction cell and detection unit. Advanced spectroscopy methods are assessed regarding their PIC compatibility. Based on the comparison of PICs with state-of-the-art bulk optical devices, it can be concluded that they can fill the application space of compact and low cost optical gas sensors.

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Flexible Transient Optical Waveguides and Surface‐Wave Biosensors Constructed from Monocrystalline Silicon

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Optical technologies offer important capabilities in both biological research and clinical care. Recent interest is in implantable devices that provide intimate optical coupling to biological tissues for a finite time period and then undergo full bioresorption into benign products, thereby serving as temporary implants for diagnosis and/or therapy. The results presented here establish a silicon-based, bioresorbable photonic platform that relies on thin filaments of monocrystalline silicon encapsulated by polymers as flexible, transient optical waveguides for accurate light delivery and sensing at targeted sites in biological systems. Comprehensive studies of the mechanical and optical properties associated with bending and unfurling the waveguides from wafer-scale sources of materials establish general guidelines in fabrication and design. Monitoring biochemical species such as glucose and tracking physiological parameters such as oxygen saturation using near-infrared spectroscopic methods demonstrate modes of utility in biomedicine. These concepts provide versatile capabilities in biomedical diagnosis, therapy, deep-tissue imaging, and surgery, and suggest a broad range of opportunities for silicon photonics in bioresorbable technologies.

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Methane absorption spectroscopy on a silicon photonic chip

Cited by 163 publications

References 20 publications

Chip-scale atomic devices

Chip-scale atomic devices

Opportunities for photonic integrated circuits in optical gas sensors

Flexible Transient Optical Waveguides and Surface‐Wave Biosensors Constructed from Monocrystalline Silicon

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