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:
May. 06, 2003
Filed:
Jun. 29, 2000
Mei Yan, Cupertino, CA (US);
Hongchuan Wang, Fremont, CA (US);
Nexfon Corporation, Fremont, CA (US);
Abstract
This invention is related to method for assembling an optical attenuator to attenuate an optical beam. The method includes a step of a) collimating the optical beam from an input optical waveguide into a substantially collimated beam comprising an upper segmented-portion and a lower segmented-portion. The method further includes steps of b) transmitting the collimated onto a phase shifting means comprising at least an upper phase shifting means for generating a phase difference between the upper segmented-portion and the lower segmented-portion and c) generating a self-interference between the upper segmented-portion and the lower segmented-portion of the collimated beam and focusing the collimated beam into an output optical waveguide with an attenuation resulting from the self-interference.