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. 29, 2007
Filed:
Apr. 28, 2003
Henning Bülow, Kornwestheim, DE;
Henning Bülow, Kornwestheim, DE;
Alcatel, Paris, FR;
Abstract
An optical time multiplexer for generating an N Gbits/s output signal () from n data modulated input pulse streams () with a pulse frequency of N/n GHz, where nεIN and n≧2, with a combiner device for passively interleaving the n input pulse streams () is characterized by at least n−1 first phase shifting elements () tuning the optical phases of at least n−1 input pulse streams () and being connected to a controller device (), which derives at least n−1 control signals from a comparison of the optical phases of the n input pulse streams () and controls the at least n−1 first phase shifting elements () such that the optical phases of all n input pulse streams () are locked with respect to each other. This optical time multuplexer reduces the drifting penalty of ODTM signals due to multiplexer instability, it prohibits the broadening of RZ pulses, and it grants the possibility to easily generate carrier-suppressed RZ signals or similar modulation formats.