Compact acousto-optic multimode interference device in (Al,Ga)As | Zendy

Dominik D. Bühler | Zendy; Antonio Crespo-Poveda | Zendy; A. Tahraoui | Zendy; K. Biermann | Zendy; P. V. Santos | Zendy; A. Cantarero | Zendy; M. M. de Lima | Zendy

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Compact acousto-optic multimode interference device in (Al,Ga)As

Author(s) -

Dominik D. Bühler,

Antonio Crespo-Poveda,

A. Tahraoui,

K. Biermann,

P. V. Santos,

A. Cantarero,

M. M. de Lima

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.400400

Subject(s) - optics , interference (communication) , modulation (music) , multi mode optical fiber , photonic integrated circuit , refractive index , photonics , waveguide , electronic circuit , materials science , phase modulation , optoelectronics , optical switch , physics , optical fiber , computer science , phase noise , telecommunications , acoustics , channel (broadcasting) , quantum mechanics

Multimode interference (MMI) devices are key components in modern integrated photonic circuits. Here, we present acoustically tuned optical switches on an (Al,Ga)As platform that enable robust, compact and fast response systems improving on recently demonstrated technology. The device consists of a 2 × 2 MMI device fine-tuned in its center region by a focused surface acoustic wave (SAW) beam working in the low GHz range. In this way, we can tune the refractive index profile over a narrow modulation region and thus control the optical switching behaviour via the applied SAW intensity. Direct tuning of the MMI device avoids losses and phase errors inherent to arrayed waveguide based switches, while also reducing the dimensions of the photonic circuit.

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