Optical signal amplification apparatus and an optical fiber tran

Details Optical signal amplification apparatus and an optical fiber tran Optical signal amplification apparatus and an optical fiber tran

1994-11-18

1996-06-25

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359337, H01S 300

Patent

active

055305830

ABSTRACT:
The optical signal amplification apparatus of this invention includes a plurality of optical fiber amplifiers connected in series, each optical fiber amplifier including: an optical fiber doped with rare earth ions; and a pumping light source for emitting pumping light for exciting the optical fiber, wherein the power of signal light input into each optical fiber amplifier is set so that the value of a distortion component of the signal light output from the optical fiber amplifier is equal to the value of a distortion component of the signal light input into the optical fiber amplifier and that the distortion component of the signal light output from the optical fiber amplifier increases when the power of the signal light input into the optical fiber amplifier increases. An optical fiber transmission system including the optical signal amplification device is also provided.

REFERENCES:
patent: 5050949 (1991-09-01), DiGiovanni et al.
patent: 5117303 (1992-05-01), Desurvire et al.
patent: 5282079 (1994-01-01), Laming et al.
patent: 5400165 (1995-03-01), Gnauck et al.
patent: 5406410 (1995-04-01), Hanna et al.
K. Kikushima and H. Yoshinaga, "Distortion Due to Gain Tilt of Erbium-Doped Fiber Amplifiers", IEEE Photonics Technology Letters, vol. 3, No. 10, Oct. 1991, pp. 945-947.
Jun Ohya, Hisanao Sato, and Toshihiro Fujita, "Cancellation of Second-Order Distortion of Directly Modulated Laser in Erbium-Doped Fiber Amplifier", IEEE Photonics Technology Letters, vol. 4, No. 4, Apr. 1993, pp. 414-416.
Etsugo Yoneda, Ko-ichi Suto; Koji Kikushima and Hisao Yoshinaga, "All-Fiber Video Distribution (AFVD) Systems Using SCM and EDFA Techniques", Journal of Lightwave Technology, vol. II, No. 1, Jan. 1993, pp. 128-137.

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