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. 05, 2012
Filed:
Nov. 14, 2008
Er'el Granot, Herzliya, IL;
Shalva Ben-ezra, Rehovot, IL;
Gil Blecher, Petach Tikva, IL;
Shai Tzadok, Petach Tikva, IL;
Reuven Zaibel, Gan Yavne, IL;
Roni Dadon, Ashdod, IL;
Motti Caspi, Rishon Lezion, IL;
Haim Chayet, Nes-Ziona, IL;
Yehuda Ganz, D.n. Karkur, IL;
Arieh Sher, Rehovot, IL;
Er'el Granot, Herzliya, IL;
Shalva Ben-Ezra, Rehovot, IL;
Gil Blecher, Petach Tikva, IL;
Shai Tzadok, Petach Tikva, IL;
Reuven Zaibel, Gan Yavne, IL;
Roni Dadon, Ashdod, IL;
Motti Caspi, Rishon Lezion, IL;
Haim Chayet, Nes-Ziona, IL;
Yehuda Ganz, D.n. Karkur, IL;
Arieh Sher, Rehovot, IL;
Kailight Photonics, Inc., Horsham, PA (US);
Abstract
In one exemplary embodiment, a method comprises transmitting an optical signal via the optical line, measuring a relative change in spectral intensity of the optical signal near a clock frequency (or half of that frequency) while varying a polarization of the optical signal between a first state of polarization and a second state of polarization, and using the relative change in spectral intensity of the optical signal to determine and correct the DGD of the optical line. Another method comprises splitting an optical signal traveling through the optical line into a first and second portions having a first and second principal states of polarization of the optical line, converting the first and second portions into a first and second electrical signals, delaying the second electrical signal to create a delayed electrical signal that compensates for a DGD of the optical line, and combining the delayed electrical signal with the first electrical signal to produce a fixed output electrical signal.