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:
Dec. 31, 2019
Filed:
Jan. 07, 2016
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Marzio Puleri, Pisa, IT;
Antonella Bogoni, Pisa, IT;
Claudio Porzi, Pisa, IT;
Antonio D'Errico, Pisa, IT;
Paolo Ghelfi, Pisa, IT;
Giovanni Serafino, Pisa, IT;
Vito Sorianello, Pisa, IT;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
An opto-electronic oscillator () comprising: an optical source () to generate an optical carrier signal having a carrier wavelength; an optical phase modulator () to apply a sinusoidal phase modulation to the optical carrier signal to generate two first order sidebands having a π phase difference between them; an optical phase shifter () comprising an optical resonator configured to apply a substantially π phase-shift to one of the first order sidebands at a preselected wavelength within an optical spectrum of said first order sideband; and a photodetector () configured to perform optical heterodyne detection of the optical carrier signal with both: said one of the first order sidebands substantially it phase shifted by the optical resonator; and the other of the first order sidebands, to generate an electrical carrier signal (), and wherein a first part of the electrical carrier signal () is delivered to an electrical output () and a second part of the electrical carrier signal () is delivered to the optical phase modulator as a drive signal.