Abstract
We report the design, fabrication, and testing of a silicon-based on-chip electrically tunable sidewall Bragg grating Fabry–Perot filter. Spectral measurement shows that the filter has a narrow notch in reflection of approximately 46 pm, a Q-factor of 33,500, and an extinction ratio of 16.4 dB. DC measurement shows that the average central wavelength shift rates with forward and reverse bias are and , respectively. Due to strong light confinement in the Fabry–Perot cavity, the electro-optic frequency response shows that the filter has a 3-dB modulation bandwidth of . The performance of using the filter to perform modulation of a nonreturn-to-zero pseudorandom binary sequence is evaluated.
© 2015 Optical Society of America
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