A Silicon-Polymer Hybrid Modulator-Design, Simulation and Proof of Principle

作者：Himmelhuber Roland^*; Herrera Oscar D; Voorakaranam Ram; Li Li; Jones Adam M; Norwood Robert A; Luo Jingdong; Jen Alex K Y; Peyghambarian Nasser

来源：Journal of Lightwave Technology, 2013, 31(24): 4067-4072.

DOI：10.1109/JLT.2013.2284547

• Electro-optic modulators
• optical polymers
• optical waveguides
• semiconductor waveguides
• silicon devices

Optimal dimensions are found for the silicon waveguide in an electro-optic (EO) polymer cladding-based silicon waveguide modulator. The confinement factor as well as the effective index of the mode are taken into account. The influence of the coplanar electrode spacing and electrode height on performance are examined and a figure of merit formula for choosing the optimal device geometry is shown. The design space for both 1550 nm and 1310 nm wavelengths is explored. With the optimal 275 nm waveguide width and 4 mu m electrode spacing, a V-pi of a few volts can be achieved even with moderate r(33) EO polymers. Experimental results on a fabricated modulator are shown and compared with the predicted performance.

• 出版日期2013-12-15