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[IEEE 2018 IEEE Photonics Conference (IPC) - Reston, VA (2018.9.30-2018.10.4)] 2018 IEEE Photonics Conference (IPC) - 40Gb/s Carrier Depletion-Based Silicon Micro-Ring Modulators
摘要： A high-speed silicon microring modulator based on a titanium-doped silicon rib waveguide has been demonstrated. Small footprint of 26.5 μm × 26.5 μm with low driving voltage of 1.5 V and 22 dB extinction ratio at 20 Gb/s modulation has been achieved. The high-speed performance is attributed to the low capacitance of the device and the efficient plasma dispersion effect in silicon. Moreover, the modulator exhibits a low propagation loss of 2.5 dB/cm and a high modulation efficiency of 1.5 V·cm. The device is fabricated on a silicon-on-insulator (SOI) wafer with a 220 nm top silicon layer and a 2 μm buried oxide layer. The rib waveguide has a width of 500 nm and a height of 220 nm with a slab height of 150 nm. The titanium doping concentration is 1×10^20 cm^{-3}. The modulator is characterized using a lightwave component analyzer and a high-speed photodetector. The 3-dB bandwidth is measured to be 20 GHz. The eye diagrams at 20 Gb/s show clear eye opening with low jitter. The results indicate that the titanium-doped silicon microring modulator is promising for high-speed optical interconnects.
关键词： high-speed modulation,titanium doping,optical interconnects,silicon photonics,microring modulator
更新于2025-09-23 15:23:52
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Single-Sideband OFDM Transmission via a Silicon Microring IQ Modulator
摘要： We experimentally demonstrate the generation of a single-sideband orthogonal frequency division multiplexed (OFDM) signal using an on-chip silicon photonics microring-based IQ modulator. Over 18 dB sideband suppression ratio is achieved for the wideband OFDM: 15.7 GHz data band and 2.7 GHz guard band. The 31.4 Gb/s signal was transmitted over 20 km of standard single-mode fiber with a bit error rate below the forward error correction threshold. While single-sideband continuous-wave signals have been produced with such hardware, this is the first demonstration of stable data transmission on the single sideband carrier.
关键词： Silicon Photonics,Single Side-band,OFDM,Microring Modulator
更新于2025-09-23 15:19:57