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:
Jan. 13, 2015
Filed:
Sep. 29, 2011
Xiao A. Shen, San Bruno, CA (US);
Tongqing Wang, Palo Alto, CA (US);
Hongbing Lie, Sunnyvale, CA (US);
Yu Sheng Bai, Los Altos Hills, CA (US);
Xiao A. Shen, San Bruno, CA (US);
Tongqing Wang, Palo Alto, CA (US);
Hongbing Lie, Sunnyvale, CA (US);
Yu Sheng Bai, Los Altos Hills, CA (US);
Futurewei Technologies, Inc., Plano, TX (US);
Abstract
An apparatus comprising a plurality of optical transmitters and a wavelength locker shared by the plurality of optical transmitters. A periodic transmission filter used for wavelength locker operations is in a network communication path and shapes optical transmissions from the plurality of optical transmitters to a network. An apparatus comprising at least one processor configured to receive a pre-filter signal corresponding to part of an optical signal comprising a pilot tone and to receive a post-filter signal corresponding to a part of the optical signal that passes through a period transmission filter, wherein a filtered part of the optical signal is directed into a network. The processor is also configured to perform wavelength locking based on a quadrature detection technique that aligns an adiabatic logical one position of a modulated transmission signal with a spectral transmission peak of the period transmission filter.