Gu, YeYeGuPannier, TinusTinusPannierLambrecht, JorisJorisLambrechtOssieur, PeterPeterOssieur2025-06-022025-05-302025-06-0220251041-1135WOS:001494083700004https://imec-publications.be/handle/20.500.12860/45739This letter presents a 106.25 Gb/s two amplitude-shift keying differential binary phase-shift keying (2ASK-DBPSK) co-integrated self-coherent optical receiver consisting of a silicon photonic integrated circuit (PIC) and an electrical integrated circuit (EIC). The optical receiver detects the phase information of the optical signal using a delay line interferometer (DLI) on the PIC. Without any equalization, a sensitivity of -7.3 dBm at a bit-error rate (BER) of 3.8×10−3 was measured. Using a 9-tap feed-forward equalizer (FFE, implemented offline) a sensitivity of -7.2 dBm at a BER of 2.4×10−4 was measured. Unlike 4-level pulse amplitude modulation (PAM-4), the approach does not necessarily need linear electronics. In addition, no local oscillator laser is required at the receiver to detect the optical phase information.Journal article10.1109/LPT.2025.3566235WOS:001494083700004