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. 01, 2007
Filed:
Oct. 22, 2003
Hsing Cheng, San Jose, CA (US);
Hamid R. Khazaei, Westford, MA (US);
Harmeet Singh, Acton, MA (US);
Emily M. Squires, Littleton, MA (US);
Hsing Cheng, San Jose, CA (US);
Hamid R. Khazaei, Westford, MA (US);
Harmeet Singh, Acton, MA (US);
Emily M. Squires, Littleton, MA (US);
JDS Uniphase Corporation, Milpitas, CA (US);
Abstract
In an optical grating device, a grating arrangement receives different wavelength output signals from a plurality of radiation sources at input ports thereof, and generates therefrom a multiplexed wavelength output signal at a zero diffraction order output port of the grating arrangement. Additionally, the gating arrangement generates at least one predetermined wavelength output signal at one of a group consisting of a separate predetermined location in an at least one of a symmetric non-zero diffraction order of the grating arrangement, within the grating arrangement itself, and a combination thereof. A separate power tap is coupled to detect the power of a separate one of the at least one predetermined wavelength output signal from the grating arrangement.