1. Multi-format transmitters for coherent optical M-PSK and M-QAM transmission;Seimetz,2005
2. Bandwidth scalable, coherent transmitter based on the parallel synthesis of multiple spectral slices using optical arbitrary waveform generation
3. High Spectral Density Optical Communication Technologies
4. Optical networking Forum (OIF), Technology Options for 400G Implementation, OIF-Tech-Options-400G-01.0 July 2015.
5. Rang-Chen (Ryan) Yu, “Cost Efficient 100G/400G Optical Transceiver Solutions”, OFC'2014 Market Watch March 13, 2014