Accurate frequency alignment in fabrication of high-order microring-resonator filters.
نویسندگان
چکیده
Frequency mismatch in high-order microring-resonator filters is investigated. We demonstrate that this frequency mismatch is caused mainly by the intrafield distortion of scanning-electron-beam-lithography (SEBL) used in fabrication. The intrafield distortion of an SEBL system is measured, and a simple method is also proposed to correct this distortion. By applying this correction method, the average frequency mismatch in second-order microring-resonator filters was reduced from -8.6 GHz to 0.28 GHz.
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ورودعنوان ژورنال:
- Optics express
دوره 16 20 شماره
صفحات -
تاریخ انتشار 2008