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Integrated-optic device for a fibre laser Doppler velocimeter

Integrated-optic device for a fibre laser Doppler velocimeter

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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.

References

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      • K.K. Wong , R.M. de la Rue , S. Wright . Electro-optic-waveguide frequency translator in LiNbO3 fabricated by proton exchange. Opt. Lett. , 546 - 548
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