High-Efficiency Terahertz Transmission in the 300 GHz Band Using Multisolitons (IEEE Phot. J.)

By utilizing multiple solitons within a SiN microring, we increased the intensity of the optical component used to generate terahertz waves while maintaining an optical frequency spacing of 300 GHz. In 10 Gbit/s transmission experiments, we reduced noise and the bit error rate compared to the case of a single soliton, and reduced the optical input required to achieve a BER of 10⁻⁹ by up to 1.4 dB (approximately 28%). This achievement, which enhances transmission performance by utilizing the operating state of the light source, paves the way for highly efficient terahertz communications.

This research, conducted by Imamura and colleagues,Published in the IEEE Photonics Journal...

1. Mantaro Imamura, Ryo Sugano, Soma Kogure, Atsuro Shirasaki, Shun Fujii, Bowen Liu, and Takasumi Tanabe, "Enhancing 300-GHz transmission performance using native-FSR multi-soliton microcombs," IEEE Photonics Journal, Vol. 18, No. 5, 5500908 (2026).