Spiral-path high-sensitivity silicon photonic wire molecular sensor with temperature-independent response

Densmore, A.; Xu, Dan‐Xia; Janz, Siegfried; Waldron, P.; Mischki, T.; Lopinski, Gregory P.; Delâge, A.; Lapointe, J.; Cheben, Pavel; Lamontagne, B.; Schmid, Jens H.

doi:10.1364/ol.33.000596

Cited by 154 publications

(90 citation statements)

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“…Densmore et al proposed a refractive index sensor employing a folded strip waveguide which confines light in a planar structure achieving an optical path of 2 mm. 22 However, for longer waveguides, this particular approach is affected adversely by scattering losses at the rough side walls of the waveguide due to limitations of the lithography process. As a result, the folded waveguides of Densmore et al exhibit propagation losses of 4 dB/cm.…”

Section: Introductionmentioning

confidence: 99%

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Integrating cell on chip—Novel waveguide platform employing ultra-long optical paths

Fohrmann¹,

Sommer²,

Pitruzzello³

et al. 2017

APL Photonics

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Optical waveguides are the most fundamental building blocks of integrated optical circuits. They are extremely well understood, yet there is still room for surprises. Here, we introduce a novel 2D waveguide platform which affords a strong interaction of the evanescent tail of a guided optical wave with an external medium while only employing a very small geometrical footprint. The key feature of the platform is its ability to integrate the ultra-long path lengths by combining low propagation losses in a silicon slab with multiple reflections of the guided wave from photonic crystal (PhC) mirrors. With a reflectivity of 99.1% of our tailored PhC-mirrors, we achieve interaction paths of 25 cm within an area of less than 10 mm2. This corresponds to 0.17 dB/cm effective propagation which is much lower than the state-of-the-art loss of approximately 1 dB/cm of single mode silicon channel waveguides. In contrast to conventional waveguides, our 2D-approach leads to a decay of the guided wave power only inversely proportional to the optical path length. This entirely different characteristic is the major advantage of the 2D integrating cell waveguide platform over the conventional channel waveguide concepts that obey the Beer-Lambert law.

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Section: Introductionmentioning

confidence: 99%

“…As a result, the folded waveguides of Densmore et al exhibit propagation losses of 4 dB/cm. 22 The current stateof-the-art loss of single mode silicon waveguides is around 1-3 dB/cm. [23][24][25] Special treatments are proposed to decrease roughness and thus reduce the loss to 0.3 dB/cm.…”

Section: Introductionmentioning

confidence: 99%

Integrating cell on chip—Novel waveguide platform employing ultra-long optical paths

Fohrmann¹,

Sommer²,

Pitruzzello³

et al. 2017

APL Photonics

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“…For example, in [12], the two arms of the MZI based biosensor were set to be the spiral structure to increase the arm length. It increases the interaction distance between the analyte and lightwave, and improves the sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Polymer integrated waveguide optical biosensor by using spectral splitting effect

Han

Shao

et al. 2017

Photonic Sens

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Abstract:The polymer waveguide optical biosensor based on the Mach-Zehnder interferometer (MZI) by using spectral splitting effect is investigated. The MZI based biosensor has two unequal width sensing arms. With the different mode dispersion responses of the two-arm waveguides to the cladding refractive index change, the spectral splitting effect of the output interference spectrum is obtained, inducing a very high sensitivity. The influence of the different mode dispersions between the two-arm waveguides on the spectral splitting characteristic is analyzed. By choosing different lengths of the two unequal width sensing arms, the initial dip wavelength of the interference spectrum and the spectral splitting range can be controlled flexibly. The polymer waveguide optical biosensor is designed, and its sensing property is analyzed. The results show that the sensitivity of the polymer waveguide optical biosensor by using spectral splitting effect is as high as 10 4 nm/RIU, with an improvement of 2-3 orders of magnitude compared with the slot waveguide based microring biosensor.

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“…10 In many sensor applications, a major challenge is the susceptibility of the sensing system to environmental changes. Various approaches have been reported in the literature to reduce or eliminate the detrimental cross sensitivity to ambient temperature, including Mach-Zehnder 11,12 and Fabry-Pérot 13 interferometric structures, structurally modifying the PhC substrate material, 14 or filling the holes of a microstructured optical fiber with a suitable material. 15 In this letter, we present a theoretical and experimental investigation of the temperature dependence for optofluidic cavities in planar PhC structures.…”

mentioning

confidence: 99%

Temperature stabilization of optofluidic photonic crystal cavities

Karnutsch

Smith

Graham

et al. 2009

Applied Physics Letters

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We present a principle for the temperature stabilization of photonic crystal (PhC) cavities based on optofluidics. We introduce an analytic method enabling a specific mode of a cavity to be made wavelength insensitive to changes in ambient temperature. Using this analysis, we experimentally demonstrate a PhC cavity with a quality factor of Q≈15 000 that exhibits a temperature-independent resonance. Temperature-stable cavities constitute a major building block in the development of a large suite of applications from high-sensitivity sensor systems for chemical and biomedical applications to microlasers, optical filters, and switches.

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Spiral-path high-sensitivity silicon photonic wire molecular sensor with temperature-independent response

Cited by 154 publications

References 0 publications

Integrating cell on chip—Novel waveguide platform employing ultra-long optical paths

Integrating cell on chip—Novel waveguide platform employing ultra-long optical paths

Polymer integrated waveguide optical biosensor by using spectral splitting effect

Temperature stabilization of optofluidic photonic crystal cavities

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