Two-line phase-matched Raman amplifier

Details Two-line phase-matched Raman amplifier Two-line phase-matched Raman amplifier

1988-12-14

1990-02-06

Tarcza, Thomas H.

Amplifiers

Parametric amplifiers

Semiconductor type

307426, 372 3, H01S 300, H03F 700

Patent

active

H00007420

ABSTRACT:
To provide a solution of the problem of medium dispersion in a two-line Raman amplifier which may increase the intensity-length product requirement and limit the conversion efficiency. By adjusting the angles between the input beams, the four-wave mixing phase mismatch due to medium dispersion may be eliminated. This couples together the Raman gains of the two lines so that the effective pump intensity for each is the total pump intensity. Since both lines convert in about the same amplifier length, independent of the relative power in each, the conversion efficiency is not limited by the inability to optimize the length for both lines simultaneously.

REFERENCES:
patent: 3483486 (1969-12-01), Sorokin
patent: 3881115 (1975-04-01), Hodgson et al.
patent: 4048516 (1977-09-01), Ammann
patent: 4165469 (1979-08-01), Ammann
patent: 4245171 (1981-01-01), Rabinowitz et al.
patent: 4277760 (1981-07-01), Eckbreth
patent: 4361770 (1982-11-01), Rabinowitz et al.
patent: 4498051 (1985-02-01), Hunter et al.
"Angle-Tuned Phase Matching in a Raman Amplifier," Bobbs et al, 1987.
"Angular Compensation for Two-Line Dispersion in a Raman Amplifier", Goldstone et al, 1987.

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