Title :
Self-mixing DFB Velocimeter with 3-dB Fiber Coupler
Author :
Igari, Naoyuki ; Mikami, Osamu
Author_Institution :
Grad. Sch. of Eng., Tokai Univ., Hiratsuka
Abstract :
Two beam irradiation scheme enables Doppler velocity measurement using a laser diode without the information of the irradiation angle. By combining the self-mixing effect of a laser diode and the two beam irradiation, the measurement system can be very simple and compact. In this paper, this scheme was demonstrated by using a pig-tail 1.55 pm DEB laser diode and a 3-dB fiber coupler. It was confirmed that the velocity measurement with high precision was possible without the irradiation angle information.
Keywords :
Doppler measurement; laser velocimetry; optical fibre couplers; semiconductor lasers; velocity measurement; DFB velocimeter; Doppler velocity measurement; fiber coupler; irradiation angle information; laser diode; self mixing; two beam irradiation; wavelength 1.55 pm; Coupling circuits; Diode lasers; Frequency measurement; Gas lasers; Laser beams; Optical coupling; Optical fiber couplers; Optical fiber polarization; Optical scattering; Velocity measurement;
Conference_Titel :
Communications and Information Technologies, 2008. ISCIT 2008. International Symposium on
Conference_Location :
Lao
Print_ISBN :
978-1-4244-2335-4
Electronic_ISBN :
978-1-4244-2336-1
DOI :
10.1109/ISCIT.2008.4700268
