Fig. 4: Transmitter to receiver data communication link demonstration.
From: Three-dimensional photonic integration for ultra-low-energy, high-bandwidth interchip data links
a, An illustration of the transmitter to receiver link showing a 3D-integrated photonic-electronic transmitter modulating four laser lines and a separate photonic-electronic receiver converting the four data channels back to the electrical domain. The illustration excludes a polarization controller between the transmitter and receiver. b, A spectrum of the link laser source. c, Eye diagrams of the four channels after the transmitter. The diagrams do not include a power scale bar, as an amplifier is used before the oscilloscope, but it is not used in the optical link. d, BERs of the data channels after the receiver.
