Photonic blind interference canceller (IMAGE)
Caption
a, Schematic of the photonic processor. PIC, photonic integrated circuit. MRR, microring resonator. Mod, modulator. BPD, balanced photodetector. TIA, transimpedance amplifier. FPGA, field-programmable gate array. Signal pathway starts at MRR Mod and ends at BPD, composing an on-chip waveguide with a length of 1.6 mm, which has an index of refraction near 2.44. The latency is, accordingly, the light propagation time, which is about 15 ps. b, Packaged palm-sized photonic processor. The setup comprises two printed circuited boards piled together and connected by a ribbon cable. The top board mounts the PIC is impedance engineered for handling high-frequency signals. The bottom board is populated with multichannel digital-to-analogue converters (DACs), providing tuning currents and biasing voltages for components on the PIC. c, Zoomed-in view of the packaged PIC, TIAs, and fibre array
Credit
by Weipeng Zhang, Joshua Lederman, Thomas Ferreira de Lima, Jiawei Zhang, Simon Bilodeau, Leila Hudson, Alexander Tait, Bhavin Shastri, and Paul Prucnal
Usage Restrictions
Credit must be given to the creator.
License
CC BY