Optical temperature sensor with enhanced sensitivity by employing hybrid waveguides in a silicon Mach-Zehnder interferometer

Guan, Xiaowei; Wang, Xiaoyan; Frandsen, Lars Hagedorn

doi:10.1364/oe.24.016349

Cited by 66 publications

(22 citation statements)

References 30 publications

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“…The former one is usually based on a Mach-Zehnder interferometer [13] configuration and the later most often on a ring resonator [14]. Mach-Zehnder interferometer have a higher temperature stability compared to ring resonators but suffer from high sensitivity [15,16,17]. Ring resonators, however, have the advantage over Mach-Zehnder interferometer of a high sensitivity and small footprint, which allows for a dense sensor-integration [18].…”

Section: Introductionmentioning

confidence: 99%

Optical Biosensors Based on Silicon-On-Insulator Ring Resonators: A Review

et al. 2019

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Recent developments in optical biosensors based on integrated photonic devices are reviewed with a special emphasis on silicon-on-insulator ring resonators. The review is mainly devoted to the following aspects: (1) Principles of sensing mechanism, (2) sensor design, (3) biofunctionalization procedures for specific molecule detection and (4) system integration and measurement set-ups. The inherent challenges of implementing photonics-based biosensors to meet specific requirements of applications in medicine, food analysis, and environmental monitoring are discussed.

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Section: Introductionmentioning

confidence: 99%

Optical Biosensors Based on Silicon-On-Insulator Ring Resonators: A Review

et al. 2019

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“…As the reviewer mentioned, we assuming a constant TOC for silicon in the simulation according to the value given in ref. [15]. In the manuscript, we have added some details about how we set the TOC of silicon:…”

Section: Reply and Modificationsmentioning

confidence: 99%

Demonstration of an Ultra-Sensitive Temperature Sensor Using an Asymmetric Mach-Zehnder Interferometer

Ding

Shi

2021

IEEE Photonics J.

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“…Among various conventional thermal-sensing systems, optical sensing technologies are finding increasing interest and applications due to their selectivity, immunity to electromagnetic interference and the capability for multiplexing and remote sensing. For the past few decades, various optical structures, such as waveguides [27][28][29] , photonic crystal fibres [30][31][32] , and Sagnac interferometers [33][34][35] , have been developed for thermal sensing. However, accurate temperature sensing with high resolution based on single-pass (waveguide or fibre) optical sensors is challenging due to the limited optical sensing path.…”

Section: Introductionmentioning

confidence: 99%

Optical whispering-gallery mode barcodes for high-precision and wide-range temperature measurements

2021

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Temperature is one of the most fundamental physical properties to characterize various physical, chemical, and biological processes. Even a slight change in temperature could have an impact on the status or dynamics of a system. Thus, there is a great need for high-precision and large-dynamic-range temperature measurements. Conventional temperature sensors encounter difficulties in high-precision thermal sensing on the submicron scale. Recently, optical whispering-gallery mode (WGM) sensors have shown promise for many sensing applications, such as thermal sensing, magnetic detection, and biosensing. However, despite their superior sensitivity, the conventional sensing method for WGM resonators relies on tracking the changes in a single mode, which limits the dynamic range constrained by the laser source that has to be fine-tuned in a timely manner to follow the selected mode during the measurement. Moreover, we cannot derive the actual temperature from the spectrum directly but rather derive a relative temperature change. Here, we demonstrate an optical WGM barcode technique involving simultaneous monitoring of the patterns of multiple modes that can provide a direct temperature readout from the spectrum. The measurement relies on the patterns of multiple modes in the WGM spectrum instead of the changes of a particular mode. It can provide us with more information than the single-mode spectrum, such as the precise measurement of actual temperatures. Leveraging the high sensitivity of WGMs and eliminating the need to monitor particular modes, this work lays the foundation for developing a high-performance temperature sensor with not only superior sensitivity but also a broad dynamic range.

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Optical temperature sensor with enhanced sensitivity by employing hybrid waveguides in a silicon Mach-Zehnder interferometer

Cited by 66 publications

References 30 publications

Optical Biosensors Based on Silicon-On-Insulator Ring Resonators: A Review

Optical Biosensors Based on Silicon-On-Insulator Ring Resonators: A Review

Demonstration of an Ultra-Sensitive Temperature Sensor Using an Asymmetric Mach-Zehnder Interferometer

Optical whispering-gallery mode barcodes for high-precision and wide-range temperature measurements

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