Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1986-09-19
1990-09-25
Moskowitz, Nelson
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
35016211, 350484, 455611, G02B 5172, G02B 636
Patent
active
049589210
ABSTRACT:
A light-driven phase shifter is provided for modulating a transmission light beam. A gaseous medium such as argon is provided with electron energy states excited to populate a metastable state. A tunable dye laser is selected with a wavelength effective to deplete the metastable electron state and may be intensity modulated. The dye laser is directed through the gaseous medium to define a first optical path having an index of refraction determined by the gaseous medium having a depleted metastable electron state. A transmission laser beam is also directed through the gaseous medium to define a second optical path at least partially coincident with the first optical path. The intensity of the dye laser beam may then be varied to phase modulate the transmission laser beam.
REFERENCES:
patent: 3790252 (1974-02-01), Pao
patent: 4209690 (1980-06-01), Rentzepis
patent: 4508431 (1985-04-01), Henshaw
patent: 4540244 (1985-09-01), Sincerbox
patent: 4544898 (1985-10-01), Pernich
patent: 4585301 (1986-04-01), Bialkowski
patent: 4597638 (1986-07-01), Chemla
patent: 4626075 (1986-12-01), Chemla
patent: 4630898 (1986-12-01), Jewell
patent: 4632518 (1986-12-01), Jensen
Gagne et al., "Photorefractive Deflection . . . Beams", 9/86, Can. J. Phys., vol. 64, #9, pp. 1116-1120, Abst. Only.
Gaetjens Paul D.
Moser William R.
Moskowitz Nelson
The United States of America as represented by the United States
Wilson Ray G.
LandOfFree
Light-driven phase shifter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light-driven phase shifter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light-driven phase shifter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-326193