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. 07, 2013
Filed:
Dec. 06, 2007
Pierpaolo Boffi, Voghera, IT;
Lucia Marazzi, Borgarello, IT;
Paolo Martelli, Milan, IT;
Paola Parolari, Monza, IT;
Aldo Righetti, Milan, IT;
Pierpaolo Boffi, Voghera, IT;
Lucia Marazzi, Borgarello, IT;
Paolo Martelli, Milan, IT;
Paola Parolari, Monza, IT;
Aldo Righetti, Milan, IT;
Google Inc., Mountain View, CA (US);
Abstract
An optical communication system () comprises at least a transmitter () apt to emit a differential phase shift keying (DPSK) optical signal having a bit-rate equal to R, at least a receiving system () for receiving the differential phase shift keying optical signal; and an optical link () optically connecting the transmitter and the receiving system for transmitting the DPSK optical signal from the transmitter to the receiving system, wherein the receiving system comprises a coherent optical receiving device () apt to coherently receive the propagated DPSK optical signal and to emit at least one electrical signal (I) related to the received DPSK optical signal, and wherein the receiving system further comprises at least one electrical filter () for filtering the at least one electrical signal and having −3 dB double-side bandwidth greater than or equal to 0.44 R and lower than or equal to 0.68 R, and at least one squarer () for squaring the at least one filtered electrical signal. A related method for optical communication is also disclosed.