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We investigated a top-gated graphene optical modulator on a CMOS compatible silicon photonic platform. The structural optimization results revealed that the modulation efficiency is able to reach to 0.05 dB/μm with very low insertion loss.
We report an enhancement of coupling efficiency between an optical fiber and graphene photonic device integrated on a silicon photonics platform. The design and optimization of selective spot-size converters (SSSCs) enables low coupling losses of 1.4 dB/facet for TE and 2.4 dB/facet for TM modes without causing damage to the graphene. In order to maximize the potential of the perfect wavelength independent...
A drastic Q factor variation from 7900 to 1200 is observed in a silicon ring resonator loaded by micrometer-scale graphene with various lengths. The significant decay of the Q factor agrees with a numerical analysis.
We characterized optical absorption of single-layer graphene, which was integrated on a sub-micron scale silicon waveguide. The result revealed that the absorption in TM mode is lower than that in TE mode by surface-plasmon polariton.
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