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http://localhost:8080/xmlui/handle/123456789/3124| Title: | An improved low temperature sensing using PMMA coated FBG |
| Authors: | Sengupta, D. Sai Shankar, M. Saidi Reddy, P. Sai Prasad, R.L.N. Narayana, Narayana Ks. Kishore, Kishore P. |
| Keywords: | Bragg grating PMMA coating |
| Issue Date: | Nov-2011 |
| Publisher: | Proceedings Volume 8311, Optical Sensors and Biophotonics III; |
| Citation: | 10.1117/12.904606 |
| Abstract: | Fiber Bragg Gratings have been shown to have a much improved thermal sensitivity when coated by Polymethyle methacrylate (PMMA) at cryogenic regime has been proposed. The PMMA has large thermal expansion coefficients and acts as driving elements. It is coated on the FBG at room temperature and the FBG is under compression at lower temperatures. This allows a much wider tuning of Bragg grating as fiber can stand at more compression than tension. An overall sensitivity of 0.039nm/K in the 1550nm wavelength regime has been achieved and the Bragg wavelength has been tuned upto 8.97nm in the temperature range 77K to 303K |
| Description: | NITW |
| URI: | http://localhost:8080/xmlui/handle/123456789/3124 |
| Appears in Collections: | Physics |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 831103.pdf | 573.73 kB | Adobe PDF | View/Open |
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