Coherent light generators – Particular beam control device – Optical output stabilization
Patent
1992-07-27
1993-11-23
Bovernick, Rodney B.
Coherent light generators
Particular beam control device
Optical output stabilization
385 24, H01S 313
Patent
active
052651126
ABSTRACT:
For reducing power fluctuations of spectral lines of a comb generator having an annularly closed waveguide, a coupler for coupling light from a separate light source into the waveguide and out of the waveguide and also a sideband modulator, the light circulating in the waveguide can be either separately modulated or the sideband modulator can be operated to have only sidebands of the same operational sign of a frequency shift or with an amount being selected according to a particular arrangement, or can have both positive and negative frequency shifts with the amount being selected by a different formula or the length of the annularly closed waveguide can be dimensioned so that the size of the round-trip time of the light circulating in the waveguide is longer than the defined coherent time of the reference laser light. It is also possible to incorporate various combinations of these alternative ways of reducing the power fluctation.
REFERENCES:
patent: 4702550 (1987-10-01), Sano
patent: 4890893 (1990-01-01), Smoot
patent: 5111322 (1992-05-01), Bergano et al.
patent: 5153933 (1992-10-01), Smith et al.
Coppin et al, "Novel Optical Frequency Comb Synthesis Using Optical Feedback", Electronics Letters, vol. 26, No. 1, Jan. 4, 1990, pp. 28-30.
Coppin et al, "Wavelength Switching and Processing Using an All-Optical Frequency Synthesiser", EFOC/LAN 90, Jun. 27-29, 1990, pp. 314-319.
Arai et al, "New Sensitivity-Enhancing Scheme for a Fiber-Optic Interferometer Utilising Two Optical Loops", Electronics Letters, Aug. 4, 1988, vol. 24, No. 16, pp. 1000-1001.
Auracher Franz
Ebberg Alfred
Noll Bernd
Bovernick Rodney B.
Siemens Aktiengesellschaft
Wise Robert E.
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