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All-optical processing and generation are regarded as a key solution to achieve ultrahigh bitrate communication in next generation. Silicon based optical waveguides have been widely developed, including ultrafast electrical-optical modulator, splitter, wavelength generator, and etc. However, the carrier relaxation issues as well as inevitable two-photon absorption in communication regions limit its...
A new electroabsorption modulator (EAM) has been demonstrated using quantum well intermixing (QWI) method. Through local area of QWI, 110nm wavelength blue shift was attained in strip pattern of SiO2 deposition, forming optical waveguide structure and also leading to sensitive and efficiency voltage-driven optical modulation.
The low-loss and CMOS compatible Ta2O5 based optical waveguide has been demonstrated. The quality factor of 50,000 in the Ta2O5 micro-ring resonator is fabricated. Moreover, the four-wave-mixing has been realized in the submicron Ta2O5 channel waveguide.
In this work, a novel and reliable structure of OMT-integrated EAM is proposed and demonstrated to release the burden in the tapered structure. By applying electrical field on thin quantum well (Q.W.) structure, the efficient phase modulation can be achieved through refractive index change in (QW). Thereby, using ion-implantation to electrically isolate OMT and EAM, the voltage-controllable OMT (VCOMT)...
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