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Updated: Aug 18, 2026

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
Published on: December 15, 2021
Asynchronous, all-optical signal processing based on the self-frequency shift of a gigahertz Raman soliton
Masao Kato1, Kazuo Fujiura, Takashi Kurihara
1NTT Photonics Laboratories, Nippon Telegraph and Telephone Corporation, 3-1 Morinosato, Wakamiya, Atsugi, Kanagawa 243-0198, Japan. katom@aecl.ntt.co.jp
Abstract:
Ultrafast asynchronous all-optical signal processing is experimentally demonstrated. It is based on the intensity-dependent, self-frequency shift of a gigahertz Raman soliton. We demonstrate error-free, asynchronous, all-optical, bit-by-bit, self-signal recognition and demultiplexing from contended optical packets without use of an optical buffer, control pulse, or bit-phase synchronization. Fourfold, contended, 9.95-Gbit/s optical packets are transmitted through a conventional repeater span of 80 km and simultaneously demultiplexed to multiwavelength 9.95-Gbit/s optical packets with 0.5-dB processing sensitivity. Furthermore, we successfully accomplish demultiplexing from overlapping signals in contended optical packets with better than 3-dB recognition sensitivity. We confirm the capability of realizing a 3x cascade operation from bit-error-rate measurements.
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