Able to couple bounce on the second row coupler from the top, though with visible attenuation. An expansion after the second coupling was noted as well.

Tested Dr. Smalley's sample for Red one bounce into second coupler. Initially tested between second input coupler (with slight accidental coupling) to determine the point of the second bounce.

Next tested with bounce into second row's second input coupler. Notice the extension of line after the second coupler, and the broadening of the line.

Then tested with bounce into third row's second input coupler. Notice the lack of light after the second coupler indicating the coupling out of the waveguide.