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. 18, 2015
Filed:
Feb. 06, 2015
Richard J. Black, Menlo Park, CA (US);
Joannes M. Costa, Rancho La Costa, CA (US);
Behzad Moslehi, Los Altos, CA (US);
Vahid Sotoudeh, Los Altos, CA (US);
Jay A. Chesavage, Palo Alto, CA (US);
Richard J. Black, Menlo Park, CA (US);
Joannes M. Costa, Rancho La Costa, CA (US);
Behzad Moslehi, Los Altos, CA (US);
Vahid Sotoudeh, Los Altos, CA (US);
Jay A. Chesavage, Palo Alto, CA (US);
Intelligent Fiber Optic Systems, Inc., Santa Clara, CA (US);
Abstract
A plurality of AWG filters with aliasing responses are selected such that the wavelength range of a fundamental response of the AWG filters results in the aliased range of AWG filters to be adjacent to a fundamental range of the AWG filters. A plurality of optical sources is provided sufficient to cover each fundamental wavelength range and each alias wavelength range of the AWG filters. When a single one of the optical sources is enabled, reflected optical energy from a series string of FBGs coupled to the optical source is applied to the plurality of AWG filters, and the AWG output in combination with the wavelength range of the optical source is used to discriminate reflected wavelength from the FBG sensors.