Fiber-chip link via mode division multiplexing

Applying mode division multiplexing techniques to a fiber-chip link would greatly increase its communication bandwidth. However, its implementation is difficult due to the huge higher-order mode mismatch between multimode-integrated waveguides and optical few-mode fibers (FMF). Here, we present an i...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 35; no. 19; p. 1
Main Authors Jimenez Gordillo, Oscar A., Novick, Asher, Wang, Oliver L., Rizzo, Anthony J., Dave, Utsav D., Bergman, Keren, Lipson, Michal
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
3D printing
Bandwidths
Coupled modes
Couplings
Crosstalk
Data transmission
Multiplexing
Optical fiber communication
Optical fiber couplers
Optical fiber devices
Optical waveguides
Photonic integrated circuits
Silicon
Space division multiplexing
Waveguides
Wavelength division multiplexing
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Summary:Applying mode division multiplexing techniques to a fiber-chip link would greatly increase its communication bandwidth. However, its implementation is difficult due to the huge higher-order mode mismatch between multimode-integrated waveguides and optical few-mode fibers (FMF). Here, we present an integrated coupler between the higher-order modes of a silicon waveguide and those of a FMF. Our device is capable of terabit-per-second bandwidth based on the multiplexing of 4 spatial modes. It relies on a multi-stage silicon taper combined with a 3D polymer waveguide, which convert and shape the modes for one-to-one mode coupling to the FMF. We demonstrate an average crosstalk of -7 dB to the closest mode and capability for up to 1.92 Tb/sec data transmission in the L-band via mode and wavelength division multiplexing.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2023.3298771