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Integrated Phased Array for Scalable Vortex Beam Multiplexing

Orbital angular momentum (OAM) modes have low model interactions during fiber propagation at data center distances, and thus are suitable for ultra-high capacity systems at low digital signal processing. Generating OAM modes using free-space setups is useful for proof-of-concept experiments, but is not a scalable solution. We use an optical phased array (OPA) with two-dimensional antennas for on-chip circularly polarized OAM beam generation. Our previous work demonstrated an OAM multiplexer for lower-order modes. In this work, we demonstrate an OAM multiplexer that supports a record of 46 (23 per polarization) simultaneous spatial modes up to OAM order 11. We also improve the crosstalk performance of our multiplexer. We incorporate an intensity tuning capability that substantially improves the OAM quality by enabling a uniform power distribution across the antennas. The worst-case crosstalk for the supported OAM5 to OAM11 are found experimentally to be better than −12 dB, with OAM10 achieving −17.2 dB.

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Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.41 No.7 April 2023

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 2070-2078

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

PHOTONIC INTEGRATED CIRCUITS
SILICON PHOTONICS
SPACE DIVISION MULTIPLEXING
WAVELENGTH-DIVISION MULTIPLEXING
ORBITAL ANGULAR MOMENTUM

Info Detail Spesifik

DOI: 10.1109/JLT.2022.3217976

Pernyataan Tanggungjawab

Yuxuan Chen, Simon Levasseur, Leslie A. Rusch, Wei Shi

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