<p>➀ IMEC has made progress on O-band GeSi QCSE EAMs on a 300mm silicon photonics platform.</p><p>➁ The new structure design of QCSE EAMs includes improvements to suppress p-type doping, adjust the p-region structure, and reduce metal absorption losses.</p><p>➂ The device demonstrates a 3dB bandwidth greater than 50GHz and a dynamic extinction ratio of 2.3dB at 64Gb/s.</p>