Chinese Optics Letters, Volume. 7, Issue 8, 08675(2009)
Dual-wavelength FBG inscribed by femtosecond laser for simultaneous measurement of high temperature and strain
A novel fiber Bragg grating (FBG) with two transmission dips in 1310- and 1550-nm regions is proposed and inscribed by an infrared femtosecond laser. Formed by multi-photon ionization, this type of grating can withstand temperature as high as 800 degrees which makes it suitable for harsh environment sensing. In addition, the temperature and strain affect these two dips in different ways, which enables simultaneous strain and temperature sensing. The fabrication, spectrum characterization, and temperature performance of this grating are introduced.
Get Citation
Copy Citation Text
[in Chinese], [in Chinese], [in Chinese], [in Chinese]. Dual-wavelength FBG inscribed by femtosecond laser for simultaneous measurement of high temperature and strain[J]. Chinese Optics Letters, 2009, 7(8): 08675
Received: Dec. 1, 2008
Accepted: --
Published Online: Aug. 17, 2009
The Author Email: