Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Temperature Measurement Sites

Temperature Measurement Sites

A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...

Equipments Used to Measure Body Temperature

Equipments Used to Measure Body Temperature

Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...

Raman Spectroscopy Instrumentation: Overview

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...

Distance Measurements by Taping

Distance Measurements by Taping

Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...

Assessing Body Temperature - Temporal Artery

Assessing Body Temperature - Temporal Artery

Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.
Step 3: Assess the patient's forehead...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Correction: A framework for spontaneous Brillouin noise: unveiling fundamental limits in Brillouin metrology.

Light, science & applications·2026

Same author

Distributed Fiber-Optic Shape Sensing with Endpoint Error Compensation: Theory and Experimental Validation.

Sensors (Basel, Switzerland)·2026

Same author

The hidden limit in light: intrinsic noise reshaping Brillouin metrology.

Light, science & applications·2026

Same author

Adaptive Filtering Method for Dynamic BOTDA Sensing Based on a Closed-Circuit Configuration.

Sensors (Basel, Switzerland)·2026

Same author

Absolute thermometry based on Brillouin scattering in gases.

Light, science & applications·2026

Same author

A framework for spontaneous Brillouin noise: unveiling fundamental limits in Brillouin metrology.

Light, science & applications·2026

Search research articles

Related Experiment Video

Updated: May 31, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

Raman-based distributed temperature sensor with 1 m spatial resolution over 26 km SMF using low-repetition-rate

Marcelo A Soto¹, Tiziano Nannipieri, Alessandro Signorini

¹Scuola Superiore Sant'Anna, via G. Moruzzi 1, Pisa, 56124, Italy.

|July 5, 2011

Summary

This study introduces a novel optical pulse coding method for long-range Raman distributed temperature sensing. It achieves 1m spatial resolution over 26km of standard single-mode fiber with 3°C accuracy.

More Related Videos

A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

Related Experiment Videos

Last Updated: May 31, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

Area of Science:

Optics and Photonics
Fiber Optic Sensing
Distributed Temperature Sensing

Background:

Raman-based distributed temperature sensing (DTS) is crucial for monitoring infrastructure.
Standard single-mode fibers (SMFs) present challenges for long-range DTS due to signal attenuation and noise.
Novel pulse coding techniques are needed to enhance the performance of DTS systems.

Purpose of the Study:

To experimentally validate a new optical pulse coding technique for long-range DTS.
To demonstrate the feasibility of meter and submeter scale temperature sensing over standard SMFs.
To establish a new benchmark for long-range DTS performance.

Main Methods:

Implementation of a low-repetition-rate quasi-periodic pulse coding technique.
Utilization of standard high-power fiber lasers operating at 1550 nm.
Experimental setup for measuring temperature distribution over extended SMF links.

Main Results:

Achieved 1-meter spatial resolution over a 26-kilometer SMF link.
Attained a temperature resolution of 3°C.
Demonstrated successful long-range distributed temperature measurement within a 30-second measurement time.

Conclusions:

The proposed optical pulse coding technique enables unprecedented long-range DTS performance on standard SMFs.
This advancement opens possibilities for cost-effective and reliable infrastructure monitoring.
The method offers a significant improvement in spatial and temperature resolution for long-distance fiber optic sensing.