Systematic investigation of silicon digital 1×2 electro-optic switch based on a microdisk resonator through carrier injection |
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Authors: | Q Huang X Zhang J Xia J Yu |
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Institution: | 1.Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan,P.R. China;2.Institute of Semiconductors,Chinese Academy of Sciences,Beijing,P.R. China |
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Abstract: | We perform a systematic investigation on the silicon digital 1×2 electro-optic switch based on a microdisk resonator with
the refractive index tuned by carrier injection and extraction. Analytical expressions are proposed to quantify the crosstalk,
insertion loss and switching time, and then they are used to analyze the effect of the coupling-in/out coefficient, internal
loss, and quality factor. Both electron beam lithography and photolithography were employed to construct the asymmetrically
coupled microdisk resonator integrated with a p-i-n diode. A high-performance switch has been demonstrated with a crosstalk
of less than −20 dB, a switching time of ∼2 ns, as well as a power consumption of 0.46 mW. Moreover, the switching of optical
signals with high data rates has been characterized and analyzed under different working conditions. |
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Keywords: | |
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