On-chip broadband nonreciprocal light storage

Merklein M, Stiller B, Vu K, Ma P, Madden SJ, Eggleton BJ (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Nanophotonics De Gruyter Open

Book Volume: 10

Pages Range: 75-82

Journal Issue: 1

DOI: 10.1515/nanoph-2020-0371

Abstract

Breaking the symmetry between forward- and backward-propagating optical modes is of fundamental scientific interest and enables crucial functionalities, such as isolators, circulators, and duplex communication systems. Although there has been progress in achieving optical isolation on-chip, integrated broadband nonreciprocal signal processing functionalities that enable transmitting and receiving via the same low-loss planar waveguide, without altering the frequency or mode of the signal, remain elusive. Here, we demonstrate a nonreciprocal delay scheme based on the unidirectional transfer of optical data pulses to acoustic waves in a chip-based integration platform. We experimentally demonstrate that this scheme is not impacted by simultaneously counterpropagating optical signals. Furthermore, we achieve a bandwidth more than an order of magnitude broader than the intrinsic optoacoustic linewidth, linear operation for a wide range of signal powers, and importantly, show that this scheme is wavelength preserving and avoids complicated multimode structures.

Authors with CRIS profile

Birgit Stiller

Involved external institutions

University of Sydney (USYD) AU Australia (AU) Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE) Australian National University (ANU) AU Australia (AU)

How to cite

APA:

Merklein, M., Stiller, B., Vu, K., Ma, P., Madden, S.J., & Eggleton, B.J. (2021). On-chip broadband nonreciprocal light storage. Nanophotonics, 10(1), 75-82. https://doi.org/10.1515/nanoph-2020-0371

MLA:

Merklein, Moritz, et al. "On-chip broadband nonreciprocal light storage." Nanophotonics 10.1 (2021): 75-82.

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