Title :
Radiation-Tolerant Superfluorescent Fiber Sources for High-Performance Fiber-Optic Gyroscopes Working Under Gamma Irradiation Higher Than 200 krad
Author :
Peng, Tz-Shiuan ; Wang, Lon A.
Author_Institution :
Photonics & Nano-Struct. Lab., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Two effective methods, bidirectional-pump doublepass (BPDP) configuration and green light photo-annealing (GLPA) technique, are proposed to obtain radiation-tolerant superfluorescent fiber sources (SFSs) for high performance interferometric fiber-optic gyroscopes (´FOGs). The results show that the SFS prepared by each method could maintain the same meanwavelength under γ-irradiation higher than 200 krad, and still have a broad linewidth larger than 34 nm. The lowest output power loss was experimentally demonstrated to be as low as 0.6 dB for 40-mW output power. Such radiation-tolerant SFSs have better performance than those reported previously, and can be used for an ´FOG in both the low-Earth orbit (LEO) and the geostationary Earth orbit (GEO) applications.
Keywords :
annealing; fibre optic gyroscopes; gamma-ray effects; light interferometry; optical fibre fabrication; optical fibre losses; optical pumping; superradiance; γ-irradiation; BPDP configuration; FOG; GEO applications; GLPA technique; LEO applications; bidirectional-pump double-pass configuration; broad linewidth; gamma irradiation; geostationary Earth orbit applications; green light photoannealing technique; high performance interferometric fiber-optic gyroscopes; low-Earth orbit applications; lowest output power loss; mean wavelength; power 40 mW; radiation-tolerant SFS; radiation-tolerant superfluorescent fiber sources; Laser excitation; Optical fiber amplifiers; Optical fiber sensors; Power generation; Radiation effects; Radiation effect; radiation hardening; superfluorescent fiber source;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2203354
