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:
Jun. 19, 2012
Filed:
May. 23, 2008
Daniel Mahgerefteh, Palo Alto, CA (US);
Kevin J. Mccallion, Charlestown, MA (US);
The'linh Nguyen, San Jose, CA (US);
David Allouche, Belmont, CA (US);
Daniel Mahgerefteh, Palo Alto, CA (US);
Kevin J. McCallion, Charlestown, MA (US);
The'Linh Nguyen, San Jose, CA (US);
David Allouche, Belmont, CA (US);
Finisar Corporation, Sunnyvale, CA (US);
Abstract
Apparatus and methods for driving a transmitter to generate DNPSK signals is disclosed including generating N data streams comprising data symbols and for each of a plurality of sets of N simultaneous data symbols of the N data streams, imposing signals are on L of a plurality of signal lines, with the value of L corresponding to values of the N simultaneous data symbols. Signals on the plurality of signal lines are ANDed with a clock signal synchronized with the N data streams to produce RZ signals. The RZ signals are summed and the summed signal is input to a laser that produces an output having frequency modulation corresponding to the magnitude of the summed signal. The output of the laser is passed through an optical discriminator.