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Updated: Jun 13, 2026
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
160-Gb/s all-optical phase-transparent wavelength conversion through cascaded SFG-DFG in a broadband linear-chirped
Guo-Wei Lu1, Satoshi Shinada, Hideaki Furukawa
1National Institute of Information and Communications Technology, 4-1-1, Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan. gordon.guoweilu@gmail.com
Abstract:
We experimentally demonstrated ultra-fast phase-transparent wavelength conversion using cascaded sum- and difference-frequency generation (cSFG-DFG) in linear-chirped periodically poled lithium niobate (PPLN). Error-free wavelength conversion of a 160-Gb/s return-to-zero differential phase-shift keying (RZ-DPSK) signal was successfully achieved. Thanks to the enhanced conversion bandwidth in the PPLN with linear-chirped periods, no optical equalizer was required to compensate the spectrum distortion after conversion, unlike a previous demonstration of 160-Gb/s RZ on-off keying (OOK) using fixed-period PPLN.
