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:
Aug. 17, 2021
Filed:
Mar. 05, 2020
Huawei Technologies Co., Ltd., Shenzhen, CN;
Djalal Falih Bendimerad, Boulogne Billancourt, FR;
Hartmut Hafermann, Boulogne Billancourt, FR;
Huijian Zhang, Boulogne Billancourt, FR;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
An optical transmitter transmits a data signal. The optical transmitter includes an encoder configured to encode the data signal by selecting based on a bit sequence, a first symbol and a second symbol from a set of four symbols for each one of at least two transmission time slots. The optical transmitter further includes a modulator configured to use in each transmission time slot the first symbol to modulate a first carrier wave and the second symbol to modulate a second carrier wave, and to transmit the two carrier waves over orthogonal polarizations of an optical carrier. Symbols in consecutive transmission time slots have non-identical polarization states.