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. 23, 2004
Filed:
Apr. 02, 2001
Kok Wai Chang, Los Altos, CA (US);
Qingdong Guo, Sunnyvale, CA (US);
JDS Uniphase Corporation, San Jose, CA (US);
Abstract
The invention provides an optical isolator including a light collector for redirecting and/or absorbing backward propagating radiation. In the preferred embodiment, the light collector includes at least one of a light absorbing material and a light redirector that does not interfere with forward propagating radiation, but collects the unwanted backward propagating light. Accordingly, the light collecting means are suitable for high power applications for protecting the input optics, including epoxy used to secure the input optical fiber, from unwanted reflected light. Some examples of appropriate light collecting means include neutral density filters, polarizers, mirrors, and right angle prisms.