The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2026
Filed:
Apr. 26, 2024
Ii-vi Delaware, Inc., Wilmington, DE (US);
Ramesh Sundaram, Fremont, CA (US);
II-VI Delaware, Inc., Wilmington, DE (US);
Abstract
In an optical isolator, a garnet rotates a polarization of an optical signal input into the garnet via a polarizer from an optical signal source in a first direction and outputs it as a first garnet output optical signal to an analyzer which outputs it as a first analyzer output optical signal. A difference (D) between a polarization of the first garnet output optical signal and a polarization axis of the analyzer is 10°≤D<84°. The analyzer outputs a reflection of the first analyzer output optical signal as a second analyzer output optical signal to the garnet which rotates a polarization thereof in the first direction and outputs it to the polarizer as a second garnet output optical signal. The polarizer blocks ≥25 dB of the second garnet output optical signal that is received from the garnet and output to the optical signal source.