This paper systematically analyzes the device sensitivity<BR>of a dual waveguide coupled microring resonator sensor<BR>based on intensity detection. The relation between the device<BR>sensitivity and transmission coefficient, coupling coefficient, and<BR>operating wavelength has been derived and simulated, showing<BR>that the sensitivity can be enhanced by proper adjustment of the<BR>coupling coefficient and the operating wavelength. The explicit<BR>expressions of optimal self coupling coefficie
