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:
Apr. 11, 2000
Filed:
Jun. 27, 1997
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
The present multiple-stage optical isolator has low polarization-dependency and low polarization-mode dispersion but does not require a long time for the assembly. It is constructed of a first unit having a first Faraday rotator placed within a magnetic field and at least one birefringent crystal sandwiching the Faraday rotator, these components being arranged in order from the light incident side; and a second unit having a second Faraday rotator placed within a magnetic field and at least one birefringent crystal sandwiching the Faraday rotator, these components being arranged in order from the light incident side, wherein the first and second units are arranged in order along the direction of the light transmission.