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:
Mar. 18, 2025
Filed:
Dec. 29, 2018
Ii-vi Delaware, Inc., Wilmington, DE (US);
Xi Zheng, Fujian, CN;
Guanglong Yu, Fujian, CN;
Xu Jia, Fujian, CN;
Haifeng Chen, Fujian, CN;
Ce Ren, Fujian, CN;
II-VI DELAWARE, INC., Wilmington, DE (US);
Abstract
A small integrated free space circulator, comprising a first polarizing beam splitter (), a half-wave plate (), a Faraday rotating plate (), a beam splitter (), a quarter-wave plate (), and a pair of reflective plates (), wherein the first polarizing beam splitter (), the half-wave plate (), the Faraday rotating plate (), and the beam splitter () are sequentially arranged, the quarter-wave plate () and the reflective plate () are sequentially attached to a side surface of the first polarizing beam splitter () adjacent to the half-wave plate (), and the reflective plate () is arranged on a side surface of the beam splitter () adjacent to or opposite to the Faraday rotating plate (); when the reflective plate () is arranged on the side surface of the beam splitter () opposite to the Faraday rotating plate (), the reflective plate () partially covers the side surface of the beam splitter () opposite to the Faraday rotating plate (). By means of an organic combination of optical elements such as the polarizing beam splitters (), the wave plates (), the Faraday rotating plate (), the reflectors (), and the birefringent crystal (), the device has advantages such as small volume, high integration, easy production, and low cost, and has a good market prospect.