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:
Aug. 15, 2006
Filed:
Aug. 09, 2005
Yung-chieh Hsieh, San Jose, CA (US);
Chiayu Ai, Newark, CA (US);
Yung-Chieh Hsieh, San Jose, CA (US);
Chiayu Ai, Newark, CA (US);
Other;
Abstract
An optical cavity is combined with a MUX or a de-MUX device having substantially the same free-spectral range in order to enhance the bandwidth of the device. The optical cavity can be tuned to shift the frequencies of maximum insertion loss to match the center frequency of each channel. The reflectivities of the reflective surfaces of the cavity are judiciously selected to produce the insertion-loss spectrum needed to optimize the desired result. Multiple cavities can be used in series to refine the shape of the pass-band spectrum. A frequency window is used to fine tune the free-spectral range of the cavity and to shift the peaks of its insertion-loss spectrum to the desired frequencies. Inner and outer cavity surfaces are oriented to eliminate interference from secondary reflections.