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US Patent 10209442 Photonic chip with reflecting structure for folded optical path

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Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
10209442
Patent Inventor Names
Stéphane Bernabe3
Philippe Grosse3
Sylvie Menezo3
Date of Patent
February 19, 2019
Patent Application Number
15978418
Date Filed
May 14, 2018
Patent Citations Received
‌
US Patent 11022757 Using an anti-reflection coating with a grating coupler
‌
US Patent 10705302 Photonic integrated circuit packages
Patent Primary Examiner
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Patent abstract

Optical coupling of a photonic chip to an external device by use of a system with two lenses. The photonic chip comprises a light guide layer supported by a substrate and covered by an encapsulation layer, and a lens integrated into either the front face or the back face. The light guide layer includes a wave guide coupled to a surface grating coupler. An arrangement of one or several reflecting structures each on either the front face or the back face, is provided. This arrangement comprises a reflecting structure on the back face and is made so as to assure propagation of light between the surface grating coupler, and the lens along an optical path having at least one fold. The invention also covers the fabrication method of such a photonic chip.

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