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:
Apr. 06, 2010
Filed:
Jun. 20, 2008
Kerry Litvin, Huntingdon Valley, PA (US);
Kerry Litvin, Huntingdon Valley, PA (US);
General Instrument Corporation, Horsham, PA (US);
Abstract
A cascaded pair of broad bandwidth optical filters provides an overlap in pass-bands that forms a flat, narrow band optical filter. A first band-pass filter is operable to receive the optical signal and to transmit a first portion of the optical signal. The second band-pass filter receives the first portion of the optical signal transmits a second portion of the optical signal. The first band-pass filter has a first corner-pass wavelength of λ, a first corner-stop wavelength of λ, and a first pass-band center wavelength λsuch that λ≦λ≦λ. The second band-pass filter has a second corner-pass wavelength of λ, a second corner-stop wavelength of λ, and a second pass-band center wavelength λsuch that λ≦λ≦λ, wherein λ<λ<λ<λ. As such, the combined pass-band is λ≦λ≦λ.