We present that the linearity of silicon ring modulators in microwave photonics links can be improved by manipulating the quality factor in the cavity. By reducing Q factors of silicon ring modulators from 11000 to 5880 and tuning the operation wavelength for modulation, the measured Spurious-Free Dynamic Ranges of the third-order intermodulation distortion are improved from 98.5 dB·Hz2/3 to 104.3 dB·Hz2/3 and from 90.6 dB·Hz2/3 to 94.7 dB·Hz2/3 at 1 GHz and 10 GHz, respectively.
KEYWORDS: Switches, Digital signal processing, Silicon, Control systems, Palladium, Optical fibers, Modulators, Signal attenuation, Photodetectors, Waveguides
We proposed a novel automatic approach for tuning automatically different delay in a 7-bit silicon-based optical delay line. The measured results of delay line by automatic tuning are also given and compared with the design values.
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