Coherent light generators – Optical fiber laser
Patent
1993-11-02
1994-06-21
Healy, Brian
Coherent light generators
Optical fiber laser
372 3, 372 70, 372 72, 372 99, 372102, 359334, 359341, 359345, 359346, 385 37, H01S 330, G02B 634
Patent
active
053234049
ABSTRACT:
Novel optical fiber devices (amplifiers and lasers) are disclosed. The devices comprise one or more optical "cavities", depending on the type of device. The cavities typically are formed by means of in-line refractive index gratings in a length of silica-based optical fiber. The gratings typically have peak reflectivity of at least 98%. Use of such cavities enables CW pumping of the devices, making the devices suitable for use in optical fiber communication systems. In an exemplary embodiment the device is a Raman amplifier for 1.3 .mu.m signal radiation, and in another exemplary embodiment the device is a Raman laser having an output suitable for pumping an Er-doped fiber amplifier. An exemplary pump radiation source is a laser diode-pumped CW Nd:YAG laser.
REFERENCES:
patent: 4778238 (1988-10-01), Hicks
patent: 5058974 (1991-10-01), Mollenauer
patent: 5134620 (1992-07-01), Huber
patent: 5151908 (1992-09-01), Huber
patent: 5157747 (1992-10-01), Atkins et al.
patent: 5159601 (1992-10-01), Huber
patent: 5177562 (1993-01-01), Wysocki et al.
patent: 5191586 (1993-03-01), Huber
patent: 5195161 (1993-03-01), Adar et al.
patent: 5218655 (1993-06-01), Mizrahi
patent: 5235659 (1993-08-01), Atins et al.
patent: 5237576 (1993-08-01), DiGiovanni et al.
patent: 5243609 (1993-09-01), Huber
patent: 5268910 (1993-12-01), Huber
S. E. Miller, "Optical Fiber Telecommunications", Academic Press 1979, pp. 127-133, 133, 135 and 140-144 (1979).
S. G. Grubb, et al. "+24.6 dBm Output Power Er/Yb Codoped Optical Amplifier Pumped By Diode-{umped Nd:YLF Laser" Electronics Letters, vol. 28, No. 13, pp. 1275-1276 (1992).
M. Nakazawa, et al. "Active transmission line: light amplification by backward-stimulated Raman scattering in polarization-maintaining optical fiber" Journal of the Optical Society of America, vol. 1, No. 1, pp. 80-85, (1984).
V. I. Belotitskii, et al. "Amplification of semiconductor laser radiation in the wavelentth range 1.24-1.3 .mu.m by stimulated Raman scattering in an optical fiber" Sov. J. Quantum Electron, vol. 20, No. 7, pp. 753-755 (1990).
P. N. Kean, et al. "Experimental evaluation of a fibre Raman oscillator having fibre grating reflectors" J. of Modern Optics, vol. 35, No. 3, pp. 397-406 (1988).
C. Lin, et al. "A cw tunable near-infrared (1.085-1.175-.mu.m Raman oscillator" Optics Letters, vol. 1, No. 3, pp. 96-97 (Sep. 1977).
F. Irrera, et al. "Generation of high intensity cw stimulated Raman scattering in a single-mode fiber" J. Appl. Phys., vol. 63, No. 8, pp. 2882-2883 (Apr. 1988).
C. Lin, et al. "Phase matching in the minimum-chromatic-dispersion region of single-mode fibers for stimulated four-photon mixing" Optics Letters, vol. 6, No. 10, pp. 493-495 (Oct. 1981).
J. L. Zyskind, et al. "Erbium-Doped Fiber amplifiers and the Next Generation of Lightwave Systems" AT&T Technical Journal (Jan/Feb. 1992).
AT&T Bell Laboratories
Healy Brian
Pacher Eugen E.
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