Cited by 2.3k
AT&T (United States)
Publishes on Photonic and Optical Devices, Semiconductor Lasers and Optical Devices, Optical Network Technologies. 196 papers and 12.3k citations.
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Deposited films of transition metals (Ti, V, and Ni) have been diffused into LiNbO3 crystals to form low-loss TE and TM mode optical waveguides. Using Ti, single-mode low-loss waveguides which confine the guided light to within ∼1 μm of the surface have been constructed. The choice of diffusion parameters allows independent control of important waveguide parameters.
Recent research on fibers with very small or very large birefringence for polarization-dependent applications is reviewed. The nature of random coupling between normal modes of polarization is analyzed and discussed in connection with various applications.
Positive refractive-index layers in LiNbO3 and LiTaO3 have been produced by a novel out-diffusion technique. The index profiles for a variety of conditions are measured directly with an interference microscope. Low-loss optical waveguiding on the surface of these crystals has been observed.