High-resolution fast response fiber-optic laser calorimeter using a twin interferometric temperature sensor

Khomenko, A. V.; García-Weidner, A.; Tapia-Mercado, J.; Garcia-Zarate, M. A.

doi:10.1016/s0030-4018(01)01490-0

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…3 In a different application, a differential white light interferometric configuration using two Hi-Bi fiber loop mirrors, and signal analysis in the spectral domain was used to measure laser emission power, up to 3 W with a 0.3 mW resolution. 4 In this context, the use of more advanced signal processing techniques such as white light interferometry and pseudoheterodyne detection systems enable coherence tuning, improved sensitivity, and higher dynamic range. 5 Such features are highly attractive and have been explored in applications requiring real time monitoring of physical, biological, and chemical parameters.…”

Section: Introductionmentioning

confidence: 99%

Chemical sensing by differential thermal analysis with a digitally controlled fiber optic interferometer

Gonçalves

Aguilar

Frazão

et al. 2013

Review of Scientific Instruments

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In this work the implementation of an optical fiber interferometric system for differential thermal analysis enabling the identification of chemical species is described. The system is based on a white light Mach-Zehnder configuration using pseudo-heterodyne demodulation to interrogate two identical fiber Bragg gratings (FBG) in a differential scheme. System performance is compared using either standard hardware or low cost virtual instrumentation for operation control and signal processing. The operation with the virtual system enabled temperature measurements with a ±0.023 °C resolution nearly matching the performance of the standard hardware. The system ability to discriminate chemical species by differential thermal analysis was demonstrated. Mixed samples of acetone and methanol could be successfully identified, indicating the suitability of the system for high precision measurements using low cost instrumentation.

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Section: Introductionmentioning

confidence: 99%

Chemical sensing by differential thermal analysis with a digitally controlled fiber optic interferometer

Gonçalves

Aguilar

Frazão

et al. 2013

Review of Scientific Instruments

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“…R ECENTLY, there has been significant interest in the development of high resolution temperature sensors capable of detecting and measuring minute shifts in temperature for a wide variety of applications such as nano-biotechnology [1], micro-fluidic mechanics [2], thermal drift measurement in electronic equipment [3] and even the measurement of small temperature changes that arise from enzyme catalysis reactions [4,5]. Traditionally, such temperature measurements can be done by conventional technologies such as thermistors, thermocouples, Resistance Temperature Detector (RTDs) and Platinum Resistance Temperature (PRT) sensors, which have resolutions ranging from 0.1°C to 0.001°C [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensing Using Frequency Beating Technique From Single-Longitudinal Mode Fiber Laser

et al. 2012

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In this paper, a high-resolution fiber temperature sensor is proposed and demonstrated using the frequency beating technique. The sensor uses a constant wavelength (CW) at 1539.96 nm as the reference signal for the frequency beating technique. The sensor signal is provided by a fiber Bragg grating (FBG) tuned single-longitudinal mode (SLM) fiber laser, which consists of a 0.5-m long highly doped Zirconium-Erbium doped with an erbium concentration of 3000 ppm as the gain medium. The signal of the SLM, which is generated by the FBG in response to external temperature changes, is mixed with the CW signal using a 3-dB fused coupler into a 6-GHz photodetector to generate frequency beating. The typical response of the system is about 1.3 GHz/°C, with nominal temperature measurement resolutions of 0.0023°C being achieved, taking into account the resolution bandwidth of 3 MHz of the radio frequency spectrum analyzer.Index Terms-Dual-wavelength pulse, erbium-doped fiber, frequency generation, saturable absorber.

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“…The system was used in a military application for analysis of very slow heat transfer processes in radioactive materials. In a different application, a differential white light interferometric configuration using two Hi-Bi loop mirrors, and processing in the spectral domain, was used to measure laser power up to 3 W with a 0.3 mW resolution [4].…”

Section: Introductionmentioning

confidence: 99%

Interferometric system controlled by virtual instrumentation for differential thermal analysis

et al. 2011

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This work describes the implementation of an optical fiber interferometric system for differential thermal analysis. The system is based on a white light Mach-Zehnder configuration, with serrodyne phase modulation, to interrogate two identical fiber Bragg gratings (FBG) in a differential scheme. Operation and signal processing with low cost digital instrumentation developed in Labview environment enabled FBG temperature measurement with a ±0.012ºC resolution nearly matching the performance of standard hardware. Preliminary results were obtained, where mixed samples of acetone and methanol could be successfully identified, indicating the suitability of the system for high accuracy differential thermal analysis using low cost instrumentation.

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High-resolution fast response fiber-optic laser calorimeter using a twin interferometric temperature sensor

Cited by 8 publications

References 9 publications

Chemical sensing by differential thermal analysis with a digitally controlled fiber optic interferometer

Chemical sensing by differential thermal analysis with a digitally controlled fiber optic interferometer

Temperature Sensing Using Frequency Beating Technique From Single-Longitudinal Mode Fiber Laser

Interferometric system controlled by virtual instrumentation for differential thermal analysis

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