BAD HARDWARE WEEK

At the gain factor of 10.
Rule of the thumb imposes that these optical links will be used for shorter distances. Long distance optical links will still stay based on 10Ghz channels.
On the other distance side Intel is developing optical chip-to-chip interconnects up to 1TB (with multiple channels). Electrical interconnects would require increases in circuit complexity and costlier materials in order to meet this requirement, according to the ISSCC conservative paper:

28.1 Optical I/O Technology in Tera-Scale Computing
1:30 PM
I. Young, E. Mohammed, J. Liao, A. Kern, S. Palermo, B. Block, M. Reshotko, P. Chang
Intel, Hillsboro, OR
An optical I/O architecture with 90nm CMOS circuits, 1×12 VCSEL/detector arrays and
polymer waveguides achieves packaged 10Gb/s/channel at 11pJ/b, while a pre-emphasis
TX enables potential 18Gb/s at 9.6pJ/b link efficiency. Increased optical CMOS I/O
integration with ring resonator modulators and Ge detectors projects to near 1pJ/b with
current 20Gb/s performance