Efficient arsenic trisulfide vertical grating coupler on lithium niobate for integrated photonic applications | Zendy

Md Shofiqul Islam Khan | Zendy; James A. Bain | Zendy; Gianluca Piazza | Zendy

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Efficient arsenic trisulfide vertical grating coupler on lithium niobate for integrated photonic applications

Author(s) -

Md Shofiqul Islam Khan,

James A. Bain,

Gianluca Piazza

Publication year - 2019

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.44.004558

Subject(s) - lithium niobate , materials science , optics , grating , reflector (photography) , optoelectronics , photonic integrated circuit , lithium fluoride , photonics , light source , physics , nuclear physics

An efficient vertical grating coupler design for arsenic trisulfide (As 2 S 3 ) on silicon dioxide (SiO 2 ) on lithium niobate (LN) is proposed, fabricated, and experimentally verified. We report 4 dB coupling efficiency per grating for vertical fiber coupling at a wavelength of 1550 nm with a 3 dB bandwidth of 40 nm using an aluminum reflector mirror between the LN and SiO 2 interface. This coupler is the first step towards the demonstration of high-performance integrated photonic devices, which would simultaneously benefit from the acousto-optic properties of As 2 S 3 and electro-optic and acoustic properties of LN. This hybrid platform is deemed to impact a broad range of applications such as imaging, ranging, and inertial sensing.

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