Integrated-optic device for a fibre laser Doppler velocimeter

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Integrated-optic device for a fibre laser Doppler velocimeter

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© The Institution of Electrical Engineers
Published

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.

Inspec keywords: Doppler effect; optical waveguides; velocity measurement; lithium compounds; integrated optics; light interferometers; titanium; laser velocimeters; fibre optics

Other keywords: integrated-optic device; single-mode fibre; frequency shifter; heterodyne detection; LiNbO3:Ti; waveguide interferometer; fibre laser Doppler velocimeter; z-propagation Ti-diffused LiNbO3

Subjects: Integrated optics; Velocity, acceleration and rotation measurement; Integrated optics; Optical interferometry; Fibre optics; Optical waveguides and couplers; Velocity, acceleration and rotation measurement

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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      • Holman, R.L., Busch, J.R., Verber, C.M., Wood, V.E., Hartman, N.F., Cressman, P.J.: `-axis propagation and the avoidance of optical damage in lithium niobate waveguides', WC2, Topical meeting on integrated and guided-wave optics, 1984, Florida.
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      • K.H. Cameron . Simple and practical technique for attaching single-mode fibres to lithium niobate waveguides. Electron. Lett. , 974 - 976
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      • K. Honda , E.M. Garmire , K.E. Wilson . Characteristics of an integrated optics ring resonator fabricated in glass. J. Lightwave Technol. , 714 - 719
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      • H. Nishihara , J. Koyama , N. Hoki , F. Kajiya , M. Hironaga , M. Kano . Optical-fibre laser Doppler velocimeter for high-resolution measurement of pulsatile blood flows. Appl. Opt. , 1785 - 1790
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