Title :
High resolution cryogenic optical fiber sensor system using erbium-doped fiber
Author :
Yong Wook Lee ; Byoungho Lee
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
In this paper, we propose a cryogenic optical fiber sensor which can measure temperature at higher resolution using the temperature characteristics of an EDF pumped by a 1480 nm laser diode and modulation of the injection current of the pump laser diode. The measurement resolution considering fluctuations of the light source in the sensor systems is /spl sim/0.4 K near room temperature and /spl sim/0.07 K near liquid nitrogen temperature.
Keywords :
erbium; fibre optic sensors; low-temperature techniques; temperature measurement; 1480 nm; 77 to 295 K; Er-doped fiber; LD injection current modulation; high resolution cryogenic optical fiber sensor; laser diode pumping; light source fluctuation; measurement resolution; temperature measurement; Cryogenics; Current measurement; Diode lasers; Fluctuations; Laser excitation; Light sources; Optical fiber sensors; Sensor systems; Temperature measurement; Temperature sensors;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.967940
