High resolution grating antennas for beam steering on the IMOS platform

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Abstract

We propose to use SiO2 gratings on the InP membrane on silicon (IMOS) platform to form ultra-weak grating-based antennas for generation of ultra-narrow free-space optical beams. Such long gratings can produce narrow beam widths of below 0.1°. By using selective dry etching, both the grating shape and the etch depth have been precisely controlled, yielding a highly robust fabrication process. Initial results have shown a 0.088° FWHM of the emitted beam in the far-field for a 1-mm antenna length.

Original languageEnglish
Title of host publicationAsia Communications and Photonics Conference, ACPC_2019
PublisherOptical Society of America (OSA)
ISBN (Electronic)9781557528209
Publication statusPublished - 2019
EventAsia Communications and Photonics Conference, ACPC_2019 - Chengdu, Hong Kong
Duration: 2 Nov 20195 Nov 2019

Conference

ConferenceAsia Communications and Photonics Conference, ACPC_2019
CountryHong Kong
CityChengdu
Period2/11/195/11/19

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