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All-Optical Hybrid VO2/Si Waveguide Absorption Switch at Telecommunication Wavelengths

Vanadium dioxide (VO 2 ) is one of the most promising materials for developing hybrid photonic integrated circuits (PICs). At telecommunication wavelengths, VO 2 exhibits a large change on the refractive index (Δn ~ 1 and Δκ ~ 2.5) between its insulating and metallic state. Such insulating-to-metal transition (IMT) can be triggered by light, which could enable all-optical hybrid VO 2 -waveguide devices. Here, we experimentally demonstrate an all-optical absorption switch using a hybrid VO 2 /Si waveguide fully compatible with the silicon photonics platform. All-optical characterization was carried out for TE polarization and at telecommunication wavelengths using an in-plane approach. The temporal dynamics were retrieved by means of pump-probe measurements. Our results show an extinction ratio of 0.7 dB/μm with a maximum switchable length of 15 μm, a switching speed as low as 318 ns, and an energy per switch of 15.8 nJ. The inherit large optical bandwith of a non-resonant waveguide poses this device as a promising candidate for developing all-optical and broadband silicon PICs.

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Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.9 May 1 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 2888 - 2894

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

OPTICAL SWITCHING
PHOTONIC INTEGRATION
SILICON PHOTONICS
VANADIUM DIOXIDE

Info Detail Spesifik

DOI: 10.1109/JLT.2021.3054942

Pernyataan Tanggungjawab

Jorge Parra, Todora Ivanova, Mariela Menghini, Pía Homm, Jean-Pierre Locquet, Pablo Sanchis

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