The design follows the given guidelines of using the SAF1126C InP RSOA and Bragg grating on silicon photonic(SiP) chip to create a ECL using optical coupling via photonic wirebond(PWB). The design forms a Fabry Perot laser where the RSOA provides the gain region and one of the reflective mirrors, and the Bragg grating as the second mirror, as shown in Fig. 1. The photonic wirebond is chosen as the connector to minimize loss, as there is less than 1.5dB loss per facet compared to 7dB in butt coupling and 3dB in fibre packaging [1]. The layout of the SiP chip is shown in Fig. 2., and consists of a edge coupler and Bragg grating.