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Integrated-optic device for a fibre laser Doppler velocimeter

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3 Author(s)
H. Toda ; Osaka University, Department of Electronics, Faculty of Engineering, Suita, Japan ; M. Haruna ; H. Nishihara

We first demonstrate an integrated-optic device for a fibre laser Doppler velocimeter, which consists of a waveguide interferometer and a frequency shifter in z-propagation Ti-diffused LiNbO3. The device is also pigtailed with a single-mode fibre to pick up a Doppler-shifted signal. Using the fabricated device, the velocity of a moving object was successfully heterodyne-detected with a signal/noise ratio of 30dB.

Published in:

Electronics Letters  (Volume:22 ,  Issue: 19 )