Fig. 3: Heterogeneous high-speed coherent receiver integrated on the thin-film LiNbO3 platform.
From: A 3.584 Tbps coherent receiver chip on InP-LiNbO3 wafer-level integration platform
a False-colored microscope image of the fabricated coherent receiver. b Comparison of the coherent receiver chip and a coin. c False-colored microscope image of the 90° optical hybrid. d, e Simulated optical power evolution of the optical 90° hybrid with two input ports. f Measured transmission spectra of the four output ports of the device with the Mach–Zehnder delay interferometer in the C-band range. g Measured phase deviation. h Measured excess loss. i Measured the common mode rejection ratio (CMRR). j frequency response of the balanced PD in differential and common modes
