Experimental demonstration of 448 Gb/s PS-PDM-PAM8 coherent transmission over multi-core fiber

Gao, Wenpeng; Gao, Yuyuan; Lu, Dongxu; Luo, Ming; Li, Haibo; Huo, Jiahao; Zhou, Xian

doi:10.1016/j.yofte.2022.102849

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2024

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“…Therefore, other multiplexing techniques, such as mode division multiplexing (MDM) and polarization division multiplexing (PDM), are promising to expand communication capacity without changing the number of wavelengths. Some MDM [15,16,17] and PDM [18,19] transmission experiments have been reported so far. A mode MUX to excite individual higher-order modes is one of the essential mode-controlling devices for building MDM transmission systems.…”

Section: Introductionmentioning

confidence: 99%

A silicon mode multiplexer based on the three-stage cascaded wavelength insensitive coupler for MDM-WDM transmission system

Nakamura,

Sato,

Saitoh

2024

IEICE Electron. Express

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A silicon mode multiplexer (MUX) based on the three-stage cascaded wavelength insensitive coupler (3CWINC) is proposed and numerically demonstrated. The 3CWINC is composed of three identical asymmetric directional couplers (ADCs) and two different phase adjustment regions placed between each ADC. We numerically show that high-performance mode MUX is easily designed using 3CWINC, which consists of ADC with transmission higher than 25% over the entire operating wavelength range. The designed TE0-TE1 mode MUX based on 3CWINC can maintain transmission 94.4% (−0.25 dB) or higher even if fabrication error of waveguide width occurs up to 10 nm.

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