Performance tradeoff between lateral and interdigitated doping patterns for high speed carrier-depletion based silicon modulators.
نویسندگان
چکیده
Carrier-depletion based silicon modulators with lateral and interdigitated PN junctions are compared systematically on the same fabrication platform. The interdigitated diode is shown to outperform the lateral diode in achieving a low VπLπ of 0.62 V∙cm with comparable propagation loss at the expense of a higher depletion capacitance. The low VπLπ of the interdigitated PN junction is employed to demonstrate 10 Gbit/s modulation with 7.5 dB extinction ration from a 500 µm long device whose static insertion loss is 2.8 dB. In addition, up to 40 Gbit/s modulation is demonstrated for a 3 mm long device comprising a lateral diode and a co-designed traveling wave electrode.
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ورودعنوان ژورنال:
- Optics express
دوره 20 12 شماره
صفحات -
تاریخ انتشار 2012