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:
Dec. 23, 2003
Filed:
Dec. 22, 2000
Christopher Lin, Berkeley, CA (US);
Simon Cao, Fremont, CA (US);
Avanex Corporation, Fremont, CA (US);
Abstract
The present invention provides an improved gain slope equalizer which provides variable optical attenuation. The gain slope equalizer includes a transmission diffraction grating with a first side and a second side; a first lens optically coupled to the second side of the transmission diffraction grating; and at least one reflective surface optically coupled to the first lens at a side opposite to the transmission diffraction grating. The gain slope equalizer in accordance with the present invention can also be used with a Virtually Imaged Phased Array (VIPA) to provide a chromatic dispersion slope and chromatic dispersion compensation as well as variable optical attenuation. The present invention provides the heretofore unavailable capability of simultaneous tunable gain slope equalization and chromatic dispersion compensation utilizing a single apparatus.