Ultra-Compact Optical Amplifier Revolutionizes Data Transmission

Researchers from EPFL and IBM have developed a groundbreaking photonic-chip-based traveling-wave parametric amplifier (TWPA) that offers ultra-broadband optical signal amplification in a compact form. Using gallium phosphide-on-silicon dioxide technology, the amplifier delivers over 10 dB gain across 140 nm—three times the bandwidth of conventional EDFAs. Its strong optical nonlinearity boosts signals efficiently while minimizing noise. This innovation enhances optical networks, AI data centers, and precision sensing applications, marking a major step forward in high-speed data transmission and next-generation photonics.