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Fiber-optic sensors based on Vernier effect - ScienceDirect

· Therefore, ultra-high sensitivity fiber-optic sensors with the Vernier effect for gas pressure sensing have been extensively studied. The operating principle of the Vernier effect-based fiber-optic gas pressure sensors usually based on that the sensing element is affected by the pressure exerted by the gas, which causes the optical fibers to deform and the interference fringe to change. The ...

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Vernier O2 Oxygen Gas Sensor - Scientrific Pty Ltd

VERNIER O2 GAS SENSOR Vernier's O2 Gas Sensor measures oxygen concentration in air and is temperature compensated for use in different environments. It has a wide measurement range allowing it to be used to study human and cellular respiration. The O2 Gas Sensor can be used to monitor gaseous oxygen levels in a variety of biology and chemistry experiments. The sensor is intended for measuring ...

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Vernier CO2 Gas Sensor - SchoolMart

The Vernier CO2 Gas Sensor measures gaseous carbon dioxide levels by monitoring the amount of infrared radiation absorbed by carbon dioxide molecules. Very important: Do not place the sensor directly into any liquid. IT is intended only for measuring gaseous, not aqueous, CO2 concentration.

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Recent advances in gas and chemical detection by Vernier ...

· Recent advances in gas and chemical detection by Vernier effect-based photonic sensors. ... introduced since they have been generally employed in integrated photonics sensors as well as those based on the Vernier effect. Consequently, the operation of photonic sensors based on ring resonators is investigated, focusing on the operation of such devices as constituent building blocks of Vernier ...

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Recent Advances in Gas and Chemical Detection by Vernier ...

gas photonic sensors. In this paper a review of compact and efficient photonic sensors based on the Vernier effect is presented. The most relevant results of several theoretical and experimental works are reported, and the theoretical model of the typical Vernier effect-based sensor is discussed as well. In particular, sensitivity up to 460 μm/RIU has been experimentally reported, while ultra ...

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OSA | Ultra-highly sensitive gas pressure sensor based on ...

We have presented and demonstrated a fiber optic gas pressure sensor with ultra-high sensitivity based on Vernier effect. The sensor is composed of two integrated parallel Mach-Zehnder interferometers (MZIs) which are fabricated by fusion splicing a short section of dual side-hole fiber (DSHF) in between two short pieces of multimode fibers (MMFs).

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Lab: Boyle's Law with Vernier Pressure Probe

You will use the Vernier Gas Pressure Sensor and a gas syringe to vary volume and measure pressure to generate data to graph in order to determine the nature of the proportion between the pressure and volume of a gas. By collecting data and graphing it you will determine whether Boyle’s Law is a direct proportion or an inverse proportion. A direct proportion is one in which two variables are ...

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Vernier exploring gas laws lab - SlideShare

· MATERIALS Vernier computer interface large-volume container for water bath (at least computer 10 cm in diameter and 25 cm high) Vernier Gas Pressure Sensor 125 mL Erlenmeyer flask Temperature Probe hot-water supply (up to 50°C) or hot plate 20 mL gas syringe ice plastic tubing with two Luer-lock connectors 100 mL graduated cylinder rubber stopper assembly with two-way valve …

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Sensors | Free Full-Text | In-Line Mach–Zehnder ...

In this paper, we propose a highly sensitive temperature sensor based on two cascaded Mach–Zehnder interferometers (MZIs) that work using the Vernier effect. The all-fiber MZIs were assembled by splicing a segment of capillary hollow-core fiber (CHCF) between two sections of multimode fibers (MMFs). This cascaded configuration exhibits a temperature sensitivity of nm/°C in a range ...

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Vernier BioChamber 2000 - Scientrific Pty Ltd

The Vernier BioChamber 2000 is a 2000mL plastic chamber that can be used with a Vernier CO2 Gas Sensor or Vernier Go Direct CO2 Gas Sensor and a Vernier O2 Gas Sensor or Vernier Go Direct O2 Gas Sensor to monitor gaseous carbon dioxide and oxygen levels simultaneously in a closed system. The BioChamber 2000 is particularly useful when monitoring respiration and photosynthesis. The …

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Vernier Go Direct CO2 Gas Sensor - Scientrific Pty Ltd

The Vernier Go Direct CO2 Gas Sensor measures gaseous carbon dioxide concentration levels, air temperature and relative humidity. It can be used in a variety of biology experiments. It connects wirelessly via Bluetooth® wireless technology or wired via USB to your device. Monitor changes in carbon dioxide, temperature and relative humidity easily with the Vernier Go Direct CO2 Gas Sensor ...

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Ultra-sensitive gas pressure sensor based on vernier ...

· We present an optical fiber gas pressure sensor based on two cascaded Fabry-Perot interferometer cavities, one is a section of capillary tube spliced with single mode fiber at its two ends and the other consists of a pair of in-fiber reflection mirrors inscribed by use of femtosecond laser micromachining. The cavity length difference of the two Fabry-Perot interferometers can be precisely ...

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Vernier Gas Pressure Sensor - Scientrific Pty Ltd

VERNIER GAS PRESSURE SENSOR Vernier's Gas Pressure Sensor can be used to monitor pressure changes in a gas. The range is wide enough to perform Boyle’s law yet it is sensitive enough to conduct vapour-pressure or pressure-temperature experiments. Biology teachers can use the Vernier Gas Pressure Sensor to monitor transpiration or respiration in an enclosed environment. Included: • Vernier ...

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