An integrable device for pulse compression based in a directional coupler is presented. InGaAsP/ InP materials have been used in order to design an integrable structure. The length of the device is calculated in vertical and lateral guides. Each of the supermodes in the total structure presents a giant Group Velocity Dispersion (GVD) which make possible to obtain total pulse chirp compensation if the pulse propagates enought distance into the guides. In case of vertical structures, two guides of InGaAsp have been used to obtain GVD's of 10<sup>5</sup> ps<sup>2</sup>/Km wich allow high compression rates. Secondly we have designed a directional coupler using lateral coupled guides calculated with Efective Index Method (EIM) and values arround 4 10<sup>4</sup> ps<sup>2</sup>/Km have been achieved. Both designs are compared between then taking into account several important parameters as device length and fabrication issues.