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. 04, 2024
Filed:
Dec. 07, 2020
Lumentum Operations Llc, San Jose, CA (US);
George BuAbbud, Shrewsbury, MA (US);
Lumentum Operations LLC, San Jose, CA (US);
Abstract
The Bi-Di coherent transmission system is configured with at least one pair of modules coupled to one another via a single fiber. The modules each are configured with a pair of laser outputting two reference signals at respective different wavelengths λand λ, photonic transceiver and a wavelength division multiplexer (WDM) coupler. The photonic transceivers each have transmitter and receiver branches integrated in a photonic circuit and receiving the reference signals. The transmitter is configured to modulate the received reference signals λT and λT which are further coupled into the WDM coupler. The WDM couplers each sort out one of the modulated signals and transmit the other modulated signal such that the transmitted modulated signal at different wavelengths λT and λT are coupled into respective opposite ends of the fiber and propagate towards one another in opposite directions. The transmitted modulated signals are coupled into respective branches through the WDM couplers with each transmitted modulated signal interfering with the reference signals at wavelengths λand λ. The photodiodes of respective receiving branches are configured to detect a beat frequency of the interfering signals at the same wavelength.