Optical wavelength tunable filter

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8687267
SERIAL NO

12391997

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An acousto-optical tunable filter is disclosed. The filter includes a medium having one or more indices of refractions alterable by the application of acoustic waves to the medium. The filter also includes an acoustic transducer coupled to the medium to generate the acoustic waves Altering the frequency of the acoustic wave selects among the different wavelengths in the incident light ray. The device also includes an optical mirror for reflecting a wave diffracted by the medium back to the medium so that it can again be diffracted. The first diffracted wave has its frequency shifted in one direction by the frequency of the acoustic wave while the second diffracted wave has its frequency shifted in the opposite direction, thereby compensating for the first shift. The result is an output ray with little or no frequency shift.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
GAO PEILIANGNot Provided

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gao, Peiliang Alviso, US 17 105

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 1, 2025
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00