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Wavelength-tunable silicon microring modulator

2010; Optica Publishing Group; Volume: 18; Issue: 11 Linguagem: Inglês

10.1364/oe.18.010941

1094-4087

Po Dong, Roshanak Shafiiha, Shirong Liao, Hong Liang, Ning-Ning Feng, Dazeng Feng, Guoliang Li, Xuezhe Zheng, Ashok V. Krishnamoorthy, Mehdi Asghari,

Photonic Crystals and Applications

We present a wavelength-tunable, compact, high speed and low power silicon microring modulator. With a ring radius of 5 microm, we demonstrate a modulator with a high speed of 12.5 Gbps and a driving voltage of 3 V to achieve approximately 6 dB extinction ratio in high speed measurement. More importantly, tunability of the resonant wavelength is accomplished by means of a microheater on top of the ring, with an efficiency of 2.4 mW/nm (2.4 mW is needed to tune the resonant wavelength by 1 nm). This device aims to solve the narrow bandwidth problem of silicon microcavity modulators and increase the data bandwidth in optical interconnect systems.