Title :
Development of low coherence laser diode for fiber-optic gyroscope
Author :
Barbosa, Carmem L. ; de Carvalho, R.T. ; Arruda, J.U. ; Da Silva, André C. ; Bättig, R.K.
Author_Institution :
Inst. de Estudos Avancados, Sao Jose, Brazil
Abstract :
Broadband sources are the choice for high-performance fiber-optic gyroscopes. These systems rely on expensive broadband sources exhibiting low spectral modulation such as superluminescent diodes and fiber lasers. We present a low-cost alternative using commercial laser diodes. Spectrum broadening is obtained by reducing the laser facet reflectivity and reconstructing the laser cavity with a mirror deposited on the tip of a pigtailed fiber lead. The device fabrication and current experimental results are discussed
Keywords :
fibre optic gyroscopes; laser cavity resonators; semiconductor lasers; broadband source; external laser cavity; fiber optic gyroscope; laser facet reflectivity; low coherence laser diode; mirror; spectral modulation; Diode lasers; Fiber lasers; Gyroscopes; Mirrors; Optical coupling; Optical fiber devices; Optical fiber sensors; Optical fibers; Reflectivity; Superluminescent diodes;
Conference_Titel :
Microwave and Optoelectronics Conference, 1999. SBMO/IEEE MTT-S, APS and LEOS - IMOC '99. International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-5807-4
DOI :
10.1109/IMOC.1999.867029
