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:
Jul. 09, 2013
Filed:
Oct. 15, 2010
Hongbin Zhang, Marlboro, NJ (US);
Yu Sun, Lausdale, PA (US);
Carl Davidson, Warren, NJ (US);
Yi Cai, Jackson, NJ (US);
Hongbin Zhang, Marlboro, NJ (US);
Yu Sun, Lausdale, PA (US);
Carl Davidson, Warren, NJ (US);
Yi Cai, Jackson, NJ (US);
Tyco Electronics Subsea Communications, LLC, Eatontown, NJ (US);
Abstract
An optical transmitter utilizing a multi-level data modulator to produce a PDM-QPSK signal, a one-bit delay interferometer configured to correlate the multi-level data modulated signal and an optical filter configured to combine the correlated multi-level data modulated signal with one or more neighboring signals prior to transmitting over one of a plurality of optical channels. The PDM-QPSK correlated signal is configured to reduce the signal spectrum thereby increasing spectral efficiency of the transmitted signal.