Abstract
All-optical switch controlled directly with light will be an indispensable component for the implementation of highspeed transmission network from the standpoint of ultrafast processing speed. The deep-ridge DFB waveguide having no structural polarization dependence can be utilized in the photonic network in which diverse types of polarization are launched. In this paper, the requirements of deep-ridge waveguide for polarization insensitivity are examined through semi-vector finite element approach, then, the device based on calculation results is fabricated. From the calculation results, it is possible to reduce polarization sensitivity by utilizing deep-ridge waveguide structure.
