D. Y. Lee et al., "Error-free operation of a polarization-insensitive 4λ x 25 Gbps silicon photonic WDM receiver with closed-loop thermal stabilization of Si microrings," Optics Express (2016)
Y. D. Lee, M. O. Thompson, M. Lipson, “Deposited low temperature silicon GHz modulator,” Optics Express (2013)
