Amplitude modulated corrected frequency modulated laser

Details Amplitude modulated corrected frequency modulated laser Amplitude modulated corrected frequency modulated laser

1994-03-14

1995-08-29

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 509, 356 511, 356 28, G01K 308

Patent

active

054465303

ABSTRACT:
A system is provided that corrects the undesirable fast power modulation observed at an output of a wideband frequency modulated (FM) laser. The correction is accomplished by applying a corrective voltage to an amplitude modulated (AM) modulator. The response of the laser is first measured to characterize the laser. Iterative predictions of appropriate voltage correction waveform, based upon the observed power modulation and the laser's response are then applied to the AM modulator to reduce the unwanted laser power modulation.

REFERENCES:
patent: 4666295 (1987-05-01), Duvall, III et al.
patent: 5020062 (1991-05-01), Cusack, Jr. et al.
patent: 5347359 (1994-09-01), Nourrcier, Jr.

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