Device for and method of modifying the spectral characteristics

Details Device for and method of modifying the spectral characteristics Device for and method of modifying the spectral characteristics

1996-07-31

1998-05-19

Lee, John D.

Optical: systems and elements

Optical frequency converter

Dielectric optical waveguide type

359326, 359341, 372 6, 385 5, 385 15, G02F 139

Patent

active

057543348

ABSTRACT:
The modification is accomplished on the basis of the solution known as spectral inversion (or optical phase conjugation). The device (1) comprises a medium, such as typically a dispersion shifted optical fiber (4), into which the signal to be modified is injected together with a pump signal at such a level as to induce modulation instability in the fiber (4). At the output of fiber (4) a spectrally inverted optical signal is available, which signal is translated in wavelength and is obtained with high conversion efficiency. Preferably, in order to avoid stimulated Brillouin scattering, the pump signal is subjected to spectrum broadening, for instance by means of a modulator (5).

REFERENCES:
patent: 5386314 (1995-01-01), Jopson
patent: 5400164 (1995-03-01), Kurtzke et al.
patent: 5532868 (1996-07-01), Gnauck et al.
patent: 5550671 (1996-08-01), Simpson et al.
patent: 5604618 (1997-02-01), Mori et al.
"Using Modulation Instability to Determine Kerr Corfficient in Optical Fibres", M.Artiglia et al, Electronics letters 8th Jun. 1995, vol.31, No. 12, 2 pages.
"Compensation of Chromatic Dispersion in a Single-Mode Fiber by Optical Phase Conjugation", Shigeki Watanabe et al, IEEE Photonics Technology letters, vol.5, No. 1, Jan. 1993, 4 pages.
"Compensation for Channel Dispersion by Nonlinear Optical Phase Conjugation", Amnon Yariv et al, Optics letters, vol. 4, No. 2, Feb. 1979, 3 pages.

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