Title :
Interrogation of a passive fiber Bragg grating resonator sensor by current modulation of a diode laser
Author :
Chow, Jong H. ; Cumpston, Jeff S. ; Littler, Ian C M ; McClelland, David E. ; Gray, Malcolm B.
Author_Institution :
Fac. of Sci., Australian Nat. Univ., Acton, ACT, Australia
Abstract :
In this paper, experimental results for a current modulation frequency locking scheme in a single feedback control loop are presented, and are compared with the Pound-Drever-Hall (PDH) topology. This experiment provides confidence that with proper pre-stabilization of the diode laser in a more sophisticated two-loop control scheme, current modulation may well attain similar ultra-resolution strain sensitivities as those achieved using the PDH technique.
Keywords :
Bragg gratings; fibre optic sensors; laser stability; optical fibres; optical modulation; semiconductor lasers; strain sensors; Pound-Drever-Hall topology; current modulation; diode laser; feedback control loop; frequency locking; laser prestabilization; passive fiber Bragg grating resonator sensor; Capacitive sensors; Diode lasers; Fabry-Perot; Frequency modulation; Laser tuning; Optical fiber sensors; Optical resonators; Optical sensors; Radio frequency; Resonance;
Conference_Titel :
Lasers and Electro-Optics Society, 2005. LEOS 2005. The 18th Annual Meeting of the IEEE
Print_ISBN :
0-7803-9217-5
DOI :
10.1109/LEOS.2005.1548251
