Fabrication Of Low-Loss Waveguides In BK-7 By Ion Exchange

R. G . Eguchi; E. A. Maunders; I. K. Naik

doi:10.1117/12.935701

30 November 1983 Fabrication Of Low-Loss Waveguides In BK-7 By Ion Exchange

R. G . Eguchi, E. A. Maunders, I. K. Naik

Proceedings Volume 0408, Integrated Optics III; (1983) https://doi.org/10.1117/12.935701
Event: 1983 Technical Symposium East, 1983, Arlington, United States

Abstract

Low-loss planar and channel waveguides were fabricated in BK-7 substrates by ion exchange using dilute AgNO3/NaNO3 melts. waveguide refractive index profiles were inferred by comparison with effective refractive index measurements made on the guided modes. The diffusion constant of silver and its activation energy in BK-7 were calculated from the measured refractive index data. It was found that a post-exchange annealing of the waveguides resulted in a significant decrease in the waveguide losses. A Fabry-Perot waveguide resonator loss measurement technique was developed to measure the attenuation in these waveguides because of the unreliability of prism coupling methods at low-loss levels. Losses as low as 0.068 dB/cm were measured in channel waveguides.

Citation Download Citation

R. G . Eguchi, E. A. Maunders, and I. K. Naik "Fabrication Of Low-Loss Waveguides In BK-7 By Ion Exchange", Proc. SPIE 0408, Integrated Optics III, (30 November 1983); https://doi.org/10.1117/12.935701

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