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Integrated Switching Circuit for Low-Noise Self-Referenced Mid-Infrared Absorption Sensing Using Silicon Waveguides

التفاصيل البيبلوغرافية
العنوان: Integrated Switching Circuit for Low-Noise Self-Referenced Mid-Infrared Absorption Sensing Using Silicon Waveguides
المؤلفون: Yanli Qi, Zhexuan Zheng, Mehdi Banakar, Yangbo Wu, Anushka Gangnaik, David Rowe, Vinita Mittal, Jonathan Butement, James Wilkinson, Goran Mashanovich, Milos Nedeljkovic
المصدر: IEEE Photonics Journal, Vol 13, Iss 6, Pp 1-10 (2021)
بيانات النشر: IEEE, 2021.
سنة النشر: 2021
المجموعة: LCC:Applied optics. Photonics
LCC:Optics. Light
مصطلحات موضوعية: Mid-infrared, silicon photonics, optical switching, microfluidics, absorption spectroscopy, Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467
الوصف: We report a new method of accurately measuring the mid-infrared absorption of fluid analytes using on-chip waveguides that allows measurements to be referenced for noise and drift reduction whilst using only a single external detector. A silicon-on-insulator waveguide circuit integrated with a microfluidic channel is made in which a pair of switches alternate light between an evanescent absorption sensor waveguide and a reference waveguide at a rate of a few kHz, thus allowing low frequency common noise components to be removed from the measurement, and leading to a reduction in the noise floor by a factor of 11 compared to a simple waveguide absorption sensor. The device was verified by using it to detect an Isopropyl alcohol (IPA) absorption peak at a wavelength of 3.77 µm.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1943-0655
Relation: https://ieeexplore.ieee.org/document/9580667/; https://doaj.org/toc/1943-0655
DOI: 10.1109/JPHOT.2021.3121331
URL الوصول: https://doaj.org/article/6365d06c7a924bc798aef4ed9437dc6e
رقم الأكسشن: edsdoj.6365d06c7a924bc798aef4ed9437dc6e
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:19430655
DOI:10.1109/JPHOT.2021.3121331