Proposal of total-internal-reflection optical switch with slowing light in Bragg reflector waveguide

[摘要] References(11)Cited-By(8)We propose a total-internal-reflection optical switch with a Bragg reflector waveguide. Slowing light in a Bragg reflector waveguide gives us an extremely large change in the equivalent refractive index of the waveguide, which is increased by a factor of more than 10 near a cut-off wavelength. Slowing light is caused by the giant waveguide dispersion of a Bragg reflector waveguide. The proposed structure enables a large bending angle of over 40 degrees even for reasonable refractive index changes of waveguide materials. The calculated result shows a possibility of large-scale and compact cross-bar waveguide optical switches.

[学科分类] 电子、光学、磁材料

[关键词] optical switch;Bragg reflector waveguide;slow light;total internal reflection