Tracking of a tunable laser over output discontinuities

Details Tracking of a tunable laser over output discontinuities Tracking of a tunable laser over output discontinuities

2006-07-18

2006-07-18

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By light interference

Spectroscopy

Reexamination Certificate

active

07079253

ABSTRACT:
A tracking stage has an optical filter with a free spectral range greater than the maximum mode hop of a tunable laser. The free spectral range is sufficient to determine the wavelength of the laser output after the mode hop. The output is dithered or a quadrature signal is used to determine whether the mode hop is forwards or backwards. In a further embodiment, a second tracking stage with a shorter free spectral range is coupled to the tunable laser to provide enhanced wavelength resolution. Alternatively, the second tracking stage is omitted and the signal of the tracking stage is amplified to enhance wavelength resolution.

REFERENCES:
patent: 4172663 (1979-10-01), Byer et al.
patent: 4272734 (1981-06-01), Jarrett et al.
patent: 5568255 (1996-10-01), Johnson
patent: 6870629 (2005-03-01), Vogel et al.
patent: 6885462 (2005-04-01), Lee et al.

Affiliated with

Also associated with

Rating

Tracking of a tunable laser over output discontinuities does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tracking of a tunable laser over output discontinuities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tracking of a tunable laser over output discontinuities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3535839