Invention Grant
- Patent Title: Integrated optical circulator enabling polarization diversity
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Application No.: US15975268Application Date: 2018-05-09
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Publication No.: US10775637B2Publication Date: 2020-09-15
- Inventor: Ryohei Urata , Lieven Verslegers , Hong Liu , Daoyi Wang
- Applicant: Google LLC
- Applicant Address: US CA Mountain View
- Assignee: Google LLC
- Current Assignee: Google LLC
- Current Assignee Address: US CA Mountain View
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Main IPC: G02B27/28
- IPC: G02B27/28 ; G02B27/09 ; G02B6/126 ; G02B6/10 ; G02B6/27 ; G02F1/09 ; G02B5/30 ; G02B6/42

Abstract:
A photonic integrated circulator can be fabricated by including a plurality of polarizing beam splitters and optical polarization rotators such that two copies of the optical signal are output at a receiver in substantially aligned polarization states. The circulator can be used for facilitating bi-directional communications between photonic integrated circuit devices, which are inherently polarization sensitive, while reducing signal loss.
Public/Granted literature
- US20190171029A1 INTEGRATED OPTICAL CIRCULATOR ENABLING POLARIZATION DIVERSITY Public/Granted day:2019-06-06
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