公开(公告)号：US20240061170A1

公开(公告)日：2024-02-22

申请号：US17716954

申请日：2022-04-08

Applicant: Meta Platforms Technologies, LLC

Inventor： Guohua Wei ,  Mohamed Tarek Ahmed El-Haddad ,  Marc Aurèle Gilles ,  Robin Sharma ,  Ruobing Qian

IPC: G02B6/12 ,  G02B6/42 ,  G02B6/122 ,  G02B6/124

CPC classification number: G02B6/12004 ,  G02B6/4214 ,  G02B6/1228 ,  G02B6/1245 ,  G02B2006/12159 ,  G02B2006/12147 ,  G02B2006/12102 ,  G02B2006/12121

Abstract: There is provided a photonic integrated circuit configured for low-coherence interferometry and in-field sensing. The photonic integrated circuit can include an opto-coupler that has a substrate substantially transparent to a specified wavelength of light and a waveguide configured to route a light beam having a center wavelength at the specified wavelength. The opto-coupler further includes a mirror disposed at an angle, and the mirror is disposed on an angled surface of the substrate, the angled surface being proximate to an output end of the waveguide. The opto-coupler further includes a beam forming element configured to collect light reflected from the mirror, and the waveguide and the mirror are integrated within the substrate.