Title :
A Radiation-Tolerant Superfluorescent Fiber Source in Double-Pass Backward Configuration by Using Reflectivity-Tuning Method
Author :
Tz-Shiuan Peng ; Wang, Lon A. ; Liu, Richard
Author_Institution :
Photonics & Nano-Struct. Lab. (PNSL), Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A novel feedback control method by tuning reflectivity was demonstrated for stabilizing mean-wavelength of a double-pass backward (DPB) superfluorescent fiber source (SFS) under 60Co irradiation. The mean-wavelength drift was compensated with increasing dose up to 22 krad, suitable for the applications in the low Earth orbit. The rate of output power loss induced by irradiation could be decreased by 33% when the feedback control was working. The linewidth of the DPB SFS was 16 nm, 1.6 times larger than the reported one by adding an output edge filter. With such a larger linewidth the angle random walk (ARW) of an IFOG can be more reduced.
Keywords :
erbium; optical control; optical feedback; optical fibres; optical testing; optical tuning; photometric light sources; radiation hardening; radiometry; random processes; reflectivity; spectral line breadth; spectral line shift; superradiance; 60Co irradiation; angle random walk; double-pass backward configuration; erbium doped fiber; feedback control method; mean-wavelength drift; radiation hardening; radiation-tolerant superfluorescent fiber source; reflectivity-tuning method; spectral linewidth; Optical fiber amplifiers; Optical fiber communication; Optical fiber sensors; Power generation; Radiation effects; Reflectivity; Radiation effect; radiation hardening; superfluorescent fiber source (SFS);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2163062
