We report on the successful design and fabrication of a polarization-insensitive arrayed waveguide grating (AWG), using solgel-derived silica glass films formed on fused-silica substrates. By controlling the waveguide width and making the propagation constants of the polarizations equal, we have found it possible to fabricate polarization-insensitive solgel-based AWGs. Polarization-insensitive design improves the cross talk by ~10 dB in the dynamic range.
© 2003 Optical Society of America
(220.4610) Optical design and fabrication : Optical fabrication
(230.7370) Optical devices : Waveguides
(230.7380) Optical devices : Waveguides, channeled
(230.7390) Optical devices : Waveguides, planar
Soon-Ryong Park, Jaewan Jeong, Beom-Hoan O, Seung-Gol Lee, and El-Hang Lee, "Design and fabrication of polarization-insensitive hybrid solgel arrayed waveguide gratings," Opt. Lett. 28, 381-383 (2003)