scholarly journals Superhigh temperature sensitivity of long-period gratings in B/Ge co-doped fiber

2002 ◽  
Author(s):  
Xuewen Shu ◽  
Bashir A. Gwandu ◽  
Lin Zhang ◽  
Ian Bennion
Keyword(s):  
Temperature Sensitivity ◽  
Long Period ◽  
Long Period Gratings ◽  
Co Doped

scholarly journals Sensitivity Characterization of Cascaded Long-Period Gratings Operating near the Phase-Matching Turning Point

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 5978
Author(s):  
Wei Zhou ◽  
Yanli Ran ◽  
Zhijun Yan ◽  
Qizhen Sun ◽  
Chen Liu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Temperature Sensitivity ◽  
Turning Point ◽  
Phase Matching ◽  
Long Period ◽  
Long Period Gratings ◽  
High Measurement ◽  
Surrounding Refractive Index ◽  
Wavelength Resolution ◽  
Quality Factor Q

We characterized a cascaded long-period gratings (LPGs)-based sensor that was operating at the phase-matching turning point (PMTP). The cascaded LPGs constructed an in-fiber Mach–Zehnder interferometer (MZI), which exhibited a series of high-quality-factor (Q) narrow-bandwidth resonance peaks. As the LPG operated at the PMTP, the proposed sensor showed an ultrahigh refractive index (RI) and temperature sensitivity, and high measurement precision. In this study, we took an in-depth look at the effects of grating separation on Q-factor and sensitivity. The results showed that the sensitivity to the surrounding refractive index (SRI) reached 4741.5 nm/RIU at 1.4255 and 2138 nm/RIU, over the range of 1.335–1.373. In addition, the temperature sensitivity was around 4.84 nm/°C. With a 0.02 nm wavelength resolution, the RI and temperature sensing limits were 9.3 × 10−6 RIU and 5.5 × 10−3 °C.

High-temperature sensitivity of long-period gratings in B-Ge codoped fiber

2001 ◽  
Vol 13 (8) ◽  
pp. 818-820 ◽  
Author(s):  
Xuewen Shu ◽  
T. Allsop ◽  
B. Gwandu ◽  
Lin Zhang ◽  
I. Bennion
Keyword(s):  
High Temperature ◽  
Temperature Sensitivity ◽  
Long Period ◽  
Long Period Gratings ◽  
High Temperature Sensitivity

Temperature sensitivity of long-period gratings inscribed with a CO2 laser in optical fiber with graded-index cladding

2006 ◽  
Vol 119 (2) ◽  
pp. 642-650 ◽  
Author(s):  
Miroslav Chomát ◽  
Jiří Čtyroký ◽  
Daniela Berková ◽  
Vlastimil Matějec ◽  
Jiří Kaňka ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Co2 Laser ◽  
Temperature Sensitivity ◽  
Graded Index ◽  
Long Period ◽  
Long Period Gratings

Extraordinary pressure sensitivity of long-period gratings written in a boron co-doped optical fiber

2009 ◽  
Author(s):  
Mateusz Smietana ◽  
Wojtek J. Bock ◽  
Jiahua Chen ◽  
Predrag Mikulic
Keyword(s):  
Optical Fiber ◽  
Pressure Sensitivity ◽  
Long Period ◽  
Long Period Gratings ◽  
Co Doped

Pressure sensitivity of dual resonant long-period gratings written in boron co-doped optical fiber

2011 ◽  
Author(s):  
Mateusz Smietana ◽  
Wojtek J. Bock ◽  
Predrag Mikulic ◽  
Jiahua Chen ◽  
Roland Wisniewski
Keyword(s):  
Optical Fiber ◽  
Pressure Sensitivity ◽  
Long Period ◽  
Long Period Gratings ◽  
Co Doped
Sign in / Sign up

Export Citation Format

Share Document