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Hybrid Waveguides: Guided Mid‐IR and Near‐IR Light within a Hybrid Hyperbolic‐Material/Silicon Waveguide Heterostructure (Adv. Mater. 11/2021)
Author(s) -
He Mingze,
Halimi Sami I.,
Folland Thomas G.,
Sunku Sai S.,
Liu Song,
Edgar James H.,
Basov D. N.,
Weiss Sharon M.,
Caldwell Joshua D.
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202170079
Subject(s) - materials science , heterojunction , silicon , optoelectronics , photonics , silicon photonics , bandwidth (computing) , waveguide , polariton , mid infrared , infrared , slab , optics , physics , telecommunications , geophysics , computer science , wavelength
Integrated silicon photonics works in the near‐infrared with bandwidth limited to the number of channels that can physically fit within a given chip. In article number 2004305, Joshua D. Caldwell and co‐workers report a hybrid heterostructure system composed of a hexagonal boron nitride (hBN) slab on top of a silicon waveguide to realize multiplexing of both near‐ and mid‐infrared signals. The sub‐diffractional hyperbolic polaritons supported in hBN are guided by the underlying silicon structure, propagating with, but not influencing, the near‐IR signal.