Distributed Temperature Sensor | How It Works?

State-of-the-art Distributed Temperature Sensor based on Fiber Optics is discussed in this short video. The concepts behind the working of this sensor are explained.
Referenced Video of Fiber Optics: • Fiber Optics | Everyth...

[@paulmcc2006]

Thanks, great video!

[@LearningOrbis]

Glad you liked it!

[@lucabravi6947]

4:44 I guess that adding a slight delay at the start of each "scan", much finer spatial resolutions than just 1m can easily be obtained even with the present computational limitations, at the expense of course of least frequent sampling of any given point in the length of the fibre. Much like the early digital storage oscilloscopes used to work, when the Digital to Analog converter was not fast enough (and hence "real time" sampling of current DSOs could not be achieved). Am I right? Thank you for the interesting description and happy new year.

[@LearningOrbis]

Yes that way you can achieve much better spatial resolution. In this way a single light pulse will give you temperature data of the spatial locations along the whole fiber optic that are 1m apart, but the next light pulse or scan, if delay is added for example of 0.5m, will give us temperature of all spatial locations which are 0.5m displaced from the previous spatial locations. In this way we can achieve higher spatial resolution at the expense of reduced time resolution.

[@lucabravi6947]

@@LearningOrbis Exactly!

[@ticklish5]

Hello sir, very nice presentation sir,
Can you please upload a video on fiber optic acoustic sensing using otdr basics...
Thank you

[@LearningOrbis]

Will try

[@jasonvanheerden1192]

Good day. Very impressive. A quick question. If fibre optic cable is buried underground. Could the fibre optic cable itself be used as a sensor to measure vibration in the ground itself?

[@jasonvanheerden1192]

Application for a perimeter security system?

[@LearningOrbis]

Anything that can modulate or effect the light traveling inside the fiber optic can be measured using it. I don't think that underground vibrations can be of that much magnitude that they can effect the working of fiber optic and hence light traveling in it.

[@jitg.6151]

Very Nice presentation Sir,
Can u explain me what is significance of 1550 nm Wavelength & 1310 nm wavelength in DTS system.
Why two different wavelengths are using for different applications?

[@LearningOrbis]

Both wavelength are below visible spectrum, therefore, cannot be distorted by the visible light which is everywhere. Secondly, generating these wavelengths is easier using IR/Microwave LEDs. Thirdly, the frequency spectrum of reflecting waves show significant sensitivity to temperature. That's why these are being used. The range of temperature and environment also dictate which frequency can be used.

[@atifali44]

Can u explain which products use for temperature transducer, receiver??

[@LearningOrbis]

I cannot understand your question.

[@jitg.6151]

Pl explain DAS system also

[@Gheithabo]

Assalamoalikom
I am gheith from libya
intrested in DAS
If posible to give me cheap Das introgator for research
gheeith

[@hekk_tech5975]

I kindly hit the like button because the video is magnificent! Thank you sir it was very helpfull!

[@LearningOrbis]

So nice of you!