Light propagation and acousto-optic interaction in a LiNbO3 spherical waveguide

Li, Q.; Tsai, C. S.; Sottini, S.; Lee, C. C.
April 1985
Applied Physics Letters;4/15/1985, Vol. 46 Issue 8, p707
Academic Journal
Propagation, guiding, collimation, and focusing of a light beam at 6328-Ã… wavelength in a LiNbO3 spherical waveguide as well as acousto-optic diffraction in such a waveguide using the surface acoustic wave centering at 245 MHz have been accomplished for the first time. Near diffraction-limited characteristics were measured in the incident light and the diffracted light was shown to preserve this desirable characteristic. Light beam scanning and various rf signal processing experiments including spectral analysis, correlation, and convolution were carried out with encouraging results. The potential advantages of the resultant spherical waveguide acousto-optic signal processor modules over the planar waveguide counterparts are also discussed.


Related Articles

  • Integrated Optical Heterodyne Interferometer in Lithium Niobate. Rubiyanto, A.; Herrmann, H.; Ricken, R.; Tian, F.; Sohler, W. // Journal of Nonlinear Optical Physics & Materials;Jun2001, Vol. 10 Issue 2, p163 

    A high performance integrated acousto-optical heterodyne interferometer has been developed for vibration measurement. All components including an acousto-optical TE-TM mode converters, two electro-optical TE-TM converters, two polarization splitters and two phase shifters are integrated on a...

  • Raman characterization of H:LiNbO[sub 3] waveguides. Savova, I.; Savatinova, I.; Kircheva, P.; Liarokapis, E. // Applied Physics B: Lasers & Optics;2001, Vol. 73 Issue 5/6, p565 

    In this work we present polarized Raman measurements of z-cut multimode H:LiNbO[sub 3] waveguides in the κ[sub i] - and β[sub i] -phase states. A spectrum with unexpected form and behaviour, originating from the layer at the very surface, was observed in samples with various degrees of...

  • Compositional characterisation of Zn-diffused lithium niobate waveguides. Nevado, R.; Sada, C.; Segato, F.; Caccavale, F.; Kling, A.; Soares, J.C.; Cantelar, E.; Cussó, F.; Lifante, G. // Applied Physics B: Lasers & Optics;2001, Vol. 73 Issue 5/6, p555 

    Rutherford backscattering (RBS) and secondary-ion mass spectrometry techniques have been used to investigate the two-step process involved during waveguide fabrication in LiNbO[sub 3] using Zn-vapour diffusion. Compositional analysis (O, Nb, Li and Zn) in the two steps has been characterised....

  • Analysis of THz-wave surface-emitted difference-frequency generation in periodically poled lithium niobate waveguide. Avetisyan, Y.; Sasaki, Y.; Ito, H. // Applied Physics B: Lasers & Optics;2001, Vol. 73 Issue 5/6, p511 

    It was shown that the periodically poled LiNbO[sub 3] -waveguide with period of poling λ≈λ/n[sub g] (λ is the wavelength of emitted THz-wave, n[sub g] is a refractive index corresponding to optical group velocity) emits THz-wave difference-frequency generation (DFG) in the direction...

  • Efficient cascaded difference frequency conversion in periodically poled Ti:LiNbO[sub 3] waveguides using pulsed and cw pumping. Schreiber, G.; Suche, H.; Lee, Y.L.; Grundkötter, W.; Quiring, V.; Ricken, R.; Sohler, W. // Applied Physics B: Lasers & Optics;2001, Vol. 73 Issue 5/6, p501 

    Using an FM-mode-locked Ti:Er:LiNbO[sub 3] waveguide laser as the fundamental source, wavelength conversion by cascaded χ[sup (2)] :χ[sup (2)] -difference frequency generation with a conversion efficiency of up to +3(-4.6) dB was demonstrated at a pulse repetition rate of about 2 (10)...

  • Comparison of the electro-optic coefficient r[sub 33] in well-defined phases of proton exchanged LiNbO[sub 3] waveguides. Méndez, A.; de la Paliza, G.; García-Cabañes, A.; Cabrera, J.M. // Applied Physics B: Lasers & Optics;2001, Vol. 73 Issue 5/6, p485 

    The electro-optic coefficient, r[sub 33] , of proton exchanged LiNbO[sub 3] waveguides has been measured in well-defined phases of the exchanged layer. Namely, in two low index-jump α-phases, i.e. unannealed soft-exchanged (SPE) and annealed (APE) guides, and in two high index-jump phases,...

  • Spectral line broadening mechanism of Er[sup 3+] transitions in Er:Ti:LiNbO[sub 3] channel waveguides. Dierolf, V.; Kutsenko, A.B.; Ostendorf, A.; Sandmann, Chr. // Applied Physics B: Lasers & Optics;2001, Vol. 73 Issue 5/6, p443 

    In order to elucidate the interaction effects among the various defects present in a LiNbO[sub 3] -based integrated optical device, we investigated the change of the optical properties of Er[sup 3+] ions under the application of an external electric field and hydrostatic pressure. We obtained...

  • Generation of polarisation-entangled photon pairs at 1550 nm using two PPLN waveguides. Yoshizawa, A.; Kaji, R.; Tsuchida, H. // Electronics Letters;4/3/2003, Vol. 39 Issue 7, p621 

    Discusses the generation of polarization-entangled photon pairs using two periodically poled lithium niobate waveguides. Coincidence detection rate; Ratio of single-photon to coincidence detection rate; Application in quantum optical experiments; Operating conditions of single-photon detectors.

  • Depth profiling of the d[sub 33] nonlinear coefficient in annealed proton exchanged LiNbO[sub 3].... Bortz, M.L.; Eyres, L.A.; Fejer, M.M. // Applied Physics Letters;4/26/1993, Vol. 62 Issue 17, p2012 

    Describes the d[sub 33] nonlinear coefficient depth profiling in annealed proton exchanged LiNbO[sub 3] waveguides. Retention of d[sub 33] coefficient; Variation of d[sub 33] value with the annealing time; Variation of the guided wave frequency; Determination of the normalized conversion...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics