Title :
Optical twisting alert sensor based on PM-EDF short cavity DBR laser
Author :
Xuan-Quyen Dinh ; Meng Jiang ; Shum, Perry Ping ; Zhifang Wu
Author_Institution :
CINTRA, NTU, Singapore, Singapore
Abstract :
We report an optical twisting alert sensor using beat frequency from a short cavity polarization-maintaining erbium-doped fiber (PM-EDF) based distributed Bragg reflector (DBR) laser. A DBR fiber laser with an effective cavity length of ~1 cm formed by a pair of fiber Bragg gratings (FBGs) inscribed on a portion of PM-EDF was developed for demonstrated. This fiber laser exhibited stable operation in dual-polarization single-longitudinal-mode. The amplitude of the beat frequency generated by two orthogonal polarizations of the cavity is twist dependence. It is shown that the beat frequency signal can be completely “turned off” at ~180° twist angle. This type of single mode DBR fiber laser can be used as optical twisting alert sensors for remotely interrogated systems and multi-parameter monitoring systems.
Keywords :
Bragg gratings; distributed Bragg reflector lasers; erbium; fibre lasers; fibre optic sensors; laser cavity resonators; laser modes; laser stability; optical fibre polarisation; FBG; PM-EDF short cavity single mode DBR fiber laser; beat frequency amplitude; beat frequency signal; distributed Bragg reflector; dual-polarization single-longitudinal-mode; fiber Bragg gratings; laser stability; multiparameter monitoring systems; optical twisting alert sensor; polarization-maintaining erbium-doped fiber; Fiber lasers; Laser modes; Optical fiber networks; Optical fiber polarization; Optical fiber sensors; PM-EDF; distributed Bragg reflector; fiber sensor; microwave generation; twisting;
Conference_Titel :
Photonics Global Conference (PGC), 2012
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2513-4
DOI :
10.1109/PGC.2012.6458104
