Wavelength reference system for optical measurements

Details Wavelength reference system for optical measurements Wavelength reference system for optical measurements

2007-09-11

2007-09-11

Lee, Hwa (Andrew) (Department: 2886)

Optics: measuring and testing

By light interference

Using fiber or waveguide interferometer

Reexamination Certificate

active

10745291

ABSTRACT:
Devices and methods of accurately determining optical wavelengths, such as the Bragg wavelengths of an FBG sensor array. Wavelength-swept light having a characteristic spectrum is swept over a bandwidth and is applied to an interference filter. The interference filter produces an optical spectrum having one or more reference peaks that are identifiable because of the characteristic spectrum. The optical spectrum is converted into electrical signals having at least one electrical signal that is identifiable because of the characteristic spectrum. The identifiable electrical signal is used by a signal processor as an absolute, high accuracy wavelength reference. Temperature compensation or temperature stabilization can compensate the characteristic wavelength. Fiber Bragg sensor systems can use the wavelength reference to determine the Bragg wavelength of FBG elements. The characteristic spectrum can be imparted by the light source or an optical element such as a transmission line filter.

REFERENCES:
patent: 5508804 (1996-04-01), Furstenau
patent: 5838437 (1998-11-01), Miller et al.
patent: 6097487 (2000-08-01), Kringlebotn et al.
patent: 6421120 (2002-07-01), Wildnauer
patent: 6449047 (2002-09-01), Bao et al.
patent: 2002/0131054 (2002-09-01), Korn
U.K. Search Report, Application No. GB0427298.5, dated Feb. 18, 2005.
GB Examination Report, GB0427298.5, dated Jan. 24, 2006.

Affiliated with

Also associated with

Rating

Wavelength reference system for optical measurements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wavelength reference system for optical measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wavelength reference system for optical measurements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3789500