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. 12, 2009
Filed:
Sep. 02, 2005
Lijun Zhu, Dublin, CA (US);
Grigore Suruceanu, Chavannes-Pres-Renens, CH;
Robert P. Lombaerde, Belmont, CA (US);
Jignesh H. Shah, Sunnyvale, CA (US);
Joseph I. Vanniasinkam, San Ramon, CA (US);
Lijun Zhu, Dublin, CA (US);
Grigore Suruceanu, Chavannes-Pres-Renens, CH;
Robert P. Lombaerde, Belmont, CA (US);
Jignesh H. Shah, Sunnyvale, CA (US);
Joseph I. Vanniasinkam, San Ramon, CA (US);
Beam Express, Inc, Sunnyvale, CA (US);
Abstract
Apparatus for demultiplexing a wavelength division multiplexed optical signal comprising a plurality of signals each having a different wavelength. The apparatus comprises a demultiplexer sub-assembly and a multi-channel receiver optical sub-assembly. The demultiplexer sub-assembly comprises a filter block sub-assembly for splitting the input optical signal. The receiver optical sub-assembly comprises an array of photo detectors for converting the optical signals from the filter block sub-assembly into electrical signals. The electrical signals are amplified by amplifier ICs and transmitted through electrical leads. The demultiplexer sub-assembly and the multi-channel receiver optical sub-assembly are actively aligned and fixed together.