We report measurements of the refractive indices of poly-4BCMU films and the fabrication of an efficient integrated optical distributed coupler. The refractive index measurements were performed in the visible and near IR using blazed-grating couplers. The analysis led to the optimization of an input coupler with a coupling efficiency larger than 45% at 1.064 μm.
© 1990 Optical Society of America
Original Manuscript: December 1, 1989
Published: September 20, 1990
Qian Gong, Gaetano Assanto, Raymond Zanoni, George I. Stegeman, Ryszard Burzynski, and Paras N. Prasad, "Efficient grating coupling to poly-4BCMU optical waveguides," Appl. Opt. 29, 3887-3890 (1990)