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:
Oct. 31, 2017
Filed:
May. 30, 2014
Telekom Malaysia Berhad, Kuala Lumpur, MY;
Mohd. Shahril Bin Salleh, Seri Kembangan, MY;
Ummi Supya Binti Ismail, Bangi, MY;
Asmahanim Bte Ahmad, Seri Kembangan, MY;
Drees Andriyanto, Jawa Barat, ID;
Muhammad Zamzuri bin, Kajang, MY;
Zulhedry Abdul Manaf, Bangi, MY;
TELEKOM MALAYSIA BERHAD, Bangi, MY;
Abstract
This disclosure describes a wavelength division multiplexing passive optical network system () comprising an optical line terminal () for controlling transmission of data that are carried by optical signals across the optical network system along an upstream or downstream path; a signal modulating loop circuit including a circulator () connected to the optical line terminal () for determining the transmission paths of the optical signals; a splitter () connected to the circulator () for splitting the optical signals into a first portion of optical signals and a second portion of optical signals according to a predetermined ratio; an amplifier () connected to the splitter () for amplifying the second portion of optical signals; and a modulator () connected in between the amplifier () and the splitter () for modulating the amplified second portion of optical signals to be transmitted to the circulator (); a converter () connected to the splitter () for converting the first portion of optical signals into electrical signals; and one or more optical network units () connected in between the converter () and modulator () for receiving the electrical signals from the converter (), and transmitting electrical signals to the modulator () for converting the electrical signals into optical signals to be transmitted together with the amplified second portion of optical signals to the optical line terminal (); wherein the circulator () directs the optical signals received from the modulator () to the splitter () for being transmitted back into the signal modulating loop circuit and/or towards the optical network units along the downstream path, or towards the optical line terminal along the upstream path.