We have experimentally proved the optical field evolution in waveguide junctions formed by potassium ion exchange in a glass substrate using a microcomputer assisted video camera observing system. The optical field profiles in various waveguide junctions such as Y- and X-junctions have been clearly observed. Most of the results support the predicted operation of the junctions.
© 1990 Optical Society of America
Original Manuscript: November 14, 1989
Published: December 1, 1990
Y. Okamura, A. Miki, and S. Yamamoto, "Experimental demonstration of optical field evolution in waveguide junctions by using a video camera observing system," Appl. Opt. 29, 5086-5089 (1990)